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Santos AB, Carona A, Ettcheto M, Camins A, Falcão A, Fortuna A, Bicker J. Krüppel-like factors: potential roles in blood-brain barrier dysfunction and epileptogenesis. Acta Pharmacol Sin 2024; 45:1765-1776. [PMID: 38684799 PMCID: PMC11335766 DOI: 10.1038/s41401-024-01285-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 04/07/2024] [Indexed: 05/02/2024] Open
Abstract
Epilepsy is a chronic and debilitating neurological disorder, known for the occurrence of spontaneous and recurrent seizures. Despite the availability of antiseizure drugs, 30% of people with epilepsy experience uncontrolled seizures and drug resistance, evidencing that new therapeutic options are required. The process of epileptogenesis involves the development and expansion of tissue capable of generating spontaneous recurrent seizures, during which numerous events take place, namely blood-brain barrier (BBB) dysfunction, and neuroinflammation. The consequent cerebrovascular dysfunction results in a lower seizure threshold, seizure recurrence, and chronic epilepsy. This suggests that improving cerebrovascular health may interrupt the pathological cycle responsible for disease development and progression. Krüppel-like factors (KLFs) are a family of zinc-finger transcription factors, encountered in brain endothelial cells, glial cells, and neurons. KLFs are known to regulate vascular function and changes in their expression are associated with neuroinflammation and human diseases, including epilepsy. Hence, KLFs have demonstrated various roles in cerebrovascular dysfunction and epileptogenesis. This review critically discusses the purpose of KLFs in epileptogenic mechanisms and BBB dysfunction, as well as the potential of their pharmacological modulation as therapeutic approach for epilepsy treatment.
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Affiliation(s)
| | - Andreia Carona
- University of Coimbra, Faculty of Pharmacy, Coimbra, Portugal
- University of Coimbra, Coimbra Institute for Biomedical Imaging and Translational Research, Coimbra, Portugal
| | - Miren Ettcheto
- Biomedical Research Networking Center in Neurodegenerative Diseases (CIBERNED), Madrid, Spain
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, Faculty of Pharmacy and Food Science, Universitat de Barcelona, Barcelona, Spain
- Institute of Neuroscience, Universitat de Barcelona, Barcelona, Spain
- Institut d'Investigació Sanitària Pere Virgili (IISPV), Reus, Spain
| | - Antoni Camins
- Biomedical Research Networking Center in Neurodegenerative Diseases (CIBERNED), Madrid, Spain
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, Faculty of Pharmacy and Food Science, Universitat de Barcelona, Barcelona, Spain
- Institute of Neuroscience, Universitat de Barcelona, Barcelona, Spain
- Institut d'Investigació Sanitària Pere Virgili (IISPV), Reus, Spain
| | - Amílcar Falcão
- University of Coimbra, Faculty of Pharmacy, Coimbra, Portugal
- University of Coimbra, Coimbra Institute for Biomedical Imaging and Translational Research, Coimbra, Portugal
| | - Ana Fortuna
- University of Coimbra, Faculty of Pharmacy, Coimbra, Portugal
- University of Coimbra, Coimbra Institute for Biomedical Imaging and Translational Research, Coimbra, Portugal
| | - Joana Bicker
- University of Coimbra, Faculty of Pharmacy, Coimbra, Portugal.
- University of Coimbra, Coimbra Institute for Biomedical Imaging and Translational Research, Coimbra, Portugal.
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2
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Sun X, Gu R, Bai J. Differentiation and regulation of CD4 + T cell subsets in Parkinson's disease. Cell Mol Life Sci 2024; 81:352. [PMID: 39153043 PMCID: PMC11335276 DOI: 10.1007/s00018-024-05402-0] [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: 03/09/2024] [Revised: 08/06/2024] [Accepted: 08/07/2024] [Indexed: 08/19/2024]
Abstract
Parkinson's disease (PD) is the second most common neurodegenerative disease, and its hallmark pathological features are the loss of dopaminergic (DA) neurons in the midbrain substantia nigra pars compacta (SNpc) and the accumulation of alpha-synuclein (α-syn). It has been shown that the integrity of the blood-brain barrier (BBB) is damaged in PD patients, and a large number of infiltrating T cells and inflammatory cytokines have been detected in the cerebrospinal fluid (CSF) and brain parenchyma of PD patients and PD animal models, including significant change in the number and proportion of different CD4+ T cell subsets. This suggests that the neuroinflammatory response caused by CD4+ T cells is an important risk factor for the development of PD. Here, we systematically review the differentiation of CD4+ T cell subsets, and focus on describing the functions and mechanisms of different CD4+ T cell subsets and their secreted cytokines in PD. We also summarize the current immunotherapy targeting CD4+ T cells with a view to providing assistance in the diagnosis and treatment of PD.
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Affiliation(s)
- Xiaowei Sun
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China
- Medical School, Kunming University of Science and Technology, Kunming, 650500, China
- Southwest United Graduate School, Kunming, 650500, China
| | - Rou Gu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China
- Medical School, Kunming University of Science and Technology, Kunming, 650500, China
| | - Jie Bai
- Medical School, Kunming University of Science and Technology, Kunming, 650500, China.
- Southwest United Graduate School, Kunming, 650500, China.
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3
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Cunha S, Bicker J, Sereno J, Falcão A, Fortuna A. Blood brain barrier dysfunction in healthy aging and dementia: Why, how, what for? Ageing Res Rev 2024; 99:102395. [PMID: 38950867 DOI: 10.1016/j.arr.2024.102395] [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: 11/14/2023] [Revised: 06/03/2024] [Accepted: 06/23/2024] [Indexed: 07/03/2024]
Abstract
The blood brain barrier (BBB) is an indispensable structure that maintains the central nervous system (CNS) microenvironment for a correct neuronal function. It is composed by highly specialized microvessels, surrounded by astrocytes, pericytes, neurons and microglia cells, which tightly control the influx and efflux of substances to the brain parenchyma. During aging, the BBB becomes impaired, and it may contribute to the development of neurodegenerative and neurological disorders including Alzheimer's disease and other dementias. Restoring the BBB can be a strategy to prevent disease onset and development, reducing the symptoms of these conditions. This work critically reviews the major mechanisms underlying BBB breakdown in healthy and unhealthy aging, as well as biomarkers and methodologies that accurately assess its impairment. Complementarily, potential therapeutic targets are discussed as new strategies to restore the normal function of the BBB in aging.
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Affiliation(s)
- Susana Cunha
- Faculty of Pharmacy, FFUC, University of Coimbra, Coimbra 3000-548, Portugal
| | - Joana Bicker
- Faculty of Pharmacy, FFUC, University of Coimbra, Coimbra 3000-548, Portugal; CIBIT - Coimbra Institute for Biomedical Imaging and Translational Research, University of Coimbra, Coimbra, Portugal
| | - José Sereno
- CIBIT - Coimbra Institute for Biomedical Imaging and Translational Research, University of Coimbra, Coimbra, Portugal
| | - Amílcar Falcão
- Faculty of Pharmacy, FFUC, University of Coimbra, Coimbra 3000-548, Portugal; CIBIT - Coimbra Institute for Biomedical Imaging and Translational Research, University of Coimbra, Coimbra, Portugal
| | - Ana Fortuna
- Faculty of Pharmacy, FFUC, University of Coimbra, Coimbra 3000-548, Portugal; CIBIT - Coimbra Institute for Biomedical Imaging and Translational Research, University of Coimbra, Coimbra, Portugal.
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4
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Funnell JL, Fougere J, Zahn D, Dutz S, Gilbert RJ. Delivery of TGFβ3 from Magnetically Responsive Coaxial Fibers Reduces Spinal Cord Astrocyte Reactivity In Vitro. Adv Biol (Weinh) 2024:e2300531. [PMID: 38935534 DOI: 10.1002/adbi.202300531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 03/29/2024] [Indexed: 06/29/2024]
Abstract
A spinal cord injury (SCI) compresses the spinal cord, killing neurons and glia at the injury site and resulting in prolonged inflammation and scarring that prevents regeneration. Astrocytes, the main glia in the spinal cord, become reactive following SCI and contribute to adverse outcomes. The anti-inflammatory cytokine transforming growth factor beta 3 (TGFβ3) has been shown to mitigate astrocyte reactivity; however, the effects of prolonged TGFβ3 exposure on reactive astrocyte phenotype have not yet been explored. This study investigates whether magnetic core-shell electrospun fibers can be used to alter the release rate of TGFβ3 using externally applied magnetic fields, with the eventual application of tailored drug delivery based on SCI severity. Magnetic core-shell fibers are fabricated by incorporating superparamagnetic iron oxide nanoparticles (SPIONs) into the shell and TGFβ3 into the core solution for coaxial electrospinning. Magnetic field stimulation increased the release rate of TGFβ3 from the fibers by 25% over 7 days and released TGFβ3 reduced gene expression of key astrocyte reactivity markers by at least twofold. This is the first study to magnetically deliver bioactive proteins from magnetic fibers and to assess the effect of sustained release of TGFβ3 on reactive astrocyte phenotype.
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Affiliation(s)
- Jessica L Funnell
- Department of Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th St, Troy, NY, 12180, USA
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 1623 15th St., Troy, NY, 12180, USA
| | - Jasper Fougere
- Department of Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th St, Troy, NY, 12180, USA
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 1623 15th St., Troy, NY, 12180, USA
| | - Diana Zahn
- Institut für Biomedizinische Technik und Informatik, Technische Universität Ilmenau, Gustav-Kirchhoff-Str. 2, 98693, Ilmenau, Germany
| | - Silvio Dutz
- Institut für Biomedizinische Technik und Informatik, Technische Universität Ilmenau, Gustav-Kirchhoff-Str. 2, 98693, Ilmenau, Germany
- Westsächsische Hochschule Zwickau, Kornmarkt 1, 08056, Zwickau, Germany
| | - Ryan J Gilbert
- Department of Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th St, Troy, NY, 12180, USA
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 1623 15th St., Troy, NY, 12180, USA
- Albany Stratton Veteran Affairs Medical Center, 113 Holland Ave., Albany, NY, 12208, USA
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5
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Bedolla A, Wegman E, Weed M, Stevens MK, Ware K, Paranjpe A, Alkhimovitch A, Ifergan I, Taranov A, Peter JD, Gonzalez RMS, Robinson JE, McClain L, Roskin KM, Greig NH, Luo Y. Adult microglial TGFβ1 is required for microglia homeostasis via an autocrine mechanism to maintain cognitive function in mice. Nat Commun 2024; 15:5306. [PMID: 38906887 PMCID: PMC11192737 DOI: 10.1038/s41467-024-49596-0] [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: 12/20/2023] [Accepted: 06/11/2024] [Indexed: 06/23/2024] Open
Abstract
While TGF-β signaling is essential for microglial function, the cellular source of TGF-β1 ligand and its spatial regulation remains unclear in the adult CNS. Our data supports that microglia but not astrocytes or neurons are the primary producers of TGF-β1 ligands needed for microglial homeostasis. Microglia-Tgfb1 KO leads to the activation of microglia featuring a dyshomeostatic transcriptome that resembles disease-associated, injury-associated, and aged microglia, suggesting microglial self-produced TGF-β1 ligands are important in the adult CNS. Astrocytes in MG-Tgfb1 inducible (i)KO mice show a transcriptome profile that is closely aligned with an LPS-associated astrocyte profile. Additionally, using sparse mosaic single-cell microglia KO of TGF-β1 ligand we established an autocrine mechanism for signaling. Here we show that MG-Tgfb1 iKO mice present cognitive deficits, supporting that precise spatial regulation of TGF-β1 ligand derived from microglia is required for the maintenance of brain homeostasis and normal cognitive function in the adult brain.
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Affiliation(s)
- Alicia Bedolla
- Department of Molecular and Cellular Biosciences, University of Cincinnati, Cincinnati, OH, USA
- Neuroscience Graduate Program, University of Cincinnati, Cincinnati, OH, USA
| | - Elliot Wegman
- Department of Molecular and Cellular Biosciences, University of Cincinnati, Cincinnati, OH, USA
| | - Max Weed
- Department of Molecular and Cellular Biosciences, University of Cincinnati, Cincinnati, OH, USA
| | | | - Kierra Ware
- Department of Molecular and Cellular Biosciences, University of Cincinnati, Cincinnati, OH, USA
| | - Aditi Paranjpe
- Information Services for Research, Cincinnati Children's Hospital Medical Center, Cincinnati, USA
| | - Anastasia Alkhimovitch
- Department of Molecular and Cellular Biosciences, University of Cincinnati, Cincinnati, OH, USA
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Igal Ifergan
- Department of Molecular and Cellular Biosciences, University of Cincinnati, Cincinnati, OH, USA
- Neuroscience Graduate Program, University of Cincinnati, Cincinnati, OH, USA
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Aleksandr Taranov
- Department of Molecular and Cellular Biosciences, University of Cincinnati, Cincinnati, OH, USA
- Neuroscience Graduate Program, University of Cincinnati, Cincinnati, OH, USA
| | - Joshua D Peter
- Department of Molecular and Cellular Biosciences, University of Cincinnati, Cincinnati, OH, USA
| | - Rosa Maria Salazar Gonzalez
- Division of Experimental Hematology and Cancer Biology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, US
| | - J Elliott Robinson
- Division of Experimental Hematology and Cancer Biology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, US
| | - Lucas McClain
- Department of Molecular and Cellular Biosciences, University of Cincinnati, Cincinnati, OH, USA
| | - Krishna M Roskin
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, US
- Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, USA
| | - Nigel H Greig
- Translational Gerontology Branch, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Yu Luo
- Department of Molecular and Cellular Biosciences, University of Cincinnati, Cincinnati, OH, USA.
- Neuroscience Graduate Program, University of Cincinnati, Cincinnati, OH, USA.
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
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Milne SM, Lahiri A, Sanchez CL, Marshall MJ, Jahan I, Meares GP. Myelin oligodendrocyte glycoprotein reactive Th17 cells drive Janus Kinase 1 dependent transcriptional reprogramming in astrocytes and alter cell surface cytokine receptor profiles during experimental autoimmune encephalomyelitis. Sci Rep 2024; 14:13146. [PMID: 38849434 PMCID: PMC11161502 DOI: 10.1038/s41598-024-63877-0] [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: 02/05/2024] [Accepted: 06/03/2024] [Indexed: 06/09/2024] Open
Abstract
Multiple sclerosis (MS) is an autoimmune demyelinating disease affecting the central nervous system (CNS). T helper (Th) 17 cells are involved in the pathogenesis of MS and its animal model of experimental autoimmune encephalomyelitis (EAE) by infiltrating the CNS and producing effector molecules that engage resident glial cells. Among these glial cells, astrocytes have a central role in coordinating inflammatory processes by responding to cytokines and chemokines released by Th17 cells. In this study, we examined the impact of pathogenic Th17 cells on astrocytes in vitro and in vivo. We identified that Th17 cells reprogram astrocytes by driving transcriptomic changes partly through a Janus Kinase (JAK)1-dependent mechanism, which included increased chemokines, interferon-inducible genes, and cytokine receptors. In vivo, we observed a region-specific heterogeneity in the expression of cell surface cytokine receptors on astrocytes, including those for IFN-γ, IL-1, TNF-α, IL-17, TGFβ, and IL-10. Additionally, these receptors were dynamically regulated during EAE induced by adoptive transfer of myelin-reactive Th17 cells. This study overall provides evidence of Th17 cell reprogramming of astrocytes, which may drive changes in the astrocytic responsiveness to cytokines during autoimmune neuroinflammation.
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MESH Headings
- Encephalomyelitis, Autoimmune, Experimental/metabolism
- Encephalomyelitis, Autoimmune, Experimental/immunology
- Encephalomyelitis, Autoimmune, Experimental/pathology
- Animals
- Astrocytes/metabolism
- Th17 Cells/immunology
- Th17 Cells/metabolism
- Mice
- Myelin-Oligodendrocyte Glycoprotein
- Receptors, Cytokine/metabolism
- Receptors, Cytokine/genetics
- Janus Kinase 1/metabolism
- Mice, Inbred C57BL
- Cytokines/metabolism
- Cellular Reprogramming
- Female
- Cells, Cultured
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Affiliation(s)
- Sarah M Milne
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, WV, 26506, USA
| | - Anirudhya Lahiri
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, WV, 26506, USA
| | - Cristina L Sanchez
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, WV, 26506, USA
| | - Micah J Marshall
- Department of Neurology, The Ohio State University College of Medicine, IBMR 415D, 460 Medical Center Drive, Columbus, OH, 43210, USA
| | - Ishrat Jahan
- Department of Neurology, The Ohio State University College of Medicine, IBMR 415D, 460 Medical Center Drive, Columbus, OH, 43210, USA
| | - Gordon P Meares
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, WV, 26506, USA.
- Department of Neurology, The Ohio State University College of Medicine, IBMR 415D, 460 Medical Center Drive, Columbus, OH, 43210, USA.
- Department of Neuroscience, West Virginia University, Morgantown, WV, 26506, USA.
- Rockefeller Neuroscience Institute, Morgantown, WV, 26506, USA.
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7
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Wamsley B, Bicks L, Cheng Y, Kawaguchi R, Quintero D, Margolis M, Grundman J, Liu J, Xiao S, Hawken N, Mazariegos S, Geschwind DH. Molecular cascades and cell type-specific signatures in ASD revealed by single-cell genomics. Science 2024; 384:eadh2602. [PMID: 38781372 DOI: 10.1126/science.adh2602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 02/28/2024] [Indexed: 05/25/2024]
Abstract
Genomic profiling in postmortem brain from autistic individuals has consistently revealed convergent molecular changes. What drives these changes and how they relate to genetic susceptibility in this complex condition are not well understood. We performed deep single-nucleus RNA sequencing (snRNA-seq) to examine cell composition and transcriptomics, identifying dysregulation of cell type-specific gene regulatory networks (GRNs) in autism spectrum disorder (ASD), which we corroborated using single-nucleus assay for transposase-accessible chromatin with sequencing (snATAC-seq) and spatial transcriptomics. Transcriptomic changes were primarily cell type specific, involving multiple cell types, most prominently interhemispheric and callosal-projecting neurons, interneurons within superficial laminae, and distinct glial reactive states involving oligodendrocytes, microglia, and astrocytes. Autism-associated GRN drivers and their targets were enriched in rare and common genetic risk variants, connecting autism genetic susceptibility and cellular and circuit alterations in the human brain.
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Affiliation(s)
- Brie Wamsley
- Program in Neurobehavioral Genetics and Center for Autism Research and Treatment, Semel Institute, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Program in Neurogenetics, Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Lucy Bicks
- Program in Neurogenetics, Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Department of Psychiatry, Semel Institute, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Yuyan Cheng
- Program in Neurogenetics, Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Riki Kawaguchi
- Program in Neurogenetics, Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Diana Quintero
- Program in Neurogenetics, Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Michael Margolis
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Jennifer Grundman
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Jianyin Liu
- Program in Neurogenetics, Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Shaohua Xiao
- Program in Neurogenetics, Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Natalie Hawken
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Samantha Mazariegos
- Program in Neurogenetics, Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Daniel H Geschwind
- Program in Neurobehavioral Genetics and Center for Autism Research and Treatment, Semel Institute, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Program in Neurogenetics, Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Department of Psychiatry, Semel Institute, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
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8
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Sawant N, Watanabe A, Ueda H, Okano H, Morita M. Incomplete accumulation of perilesional reactive astrocytes exacerbates wound healing after closed-head injury by increasing inflammation and BBB disruption. Exp Neurol 2024; 374:114700. [PMID: 38272160 DOI: 10.1016/j.expneurol.2024.114700] [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: 10/15/2023] [Revised: 01/17/2024] [Accepted: 01/22/2024] [Indexed: 01/27/2024]
Abstract
Wound healing after closed-head injury is a significant medical issue. However, conventional models of focal traumatic brain injury, such as fluid percussion injury and controlled cortical impact, employ mechanical impacts on the exposed cerebral cortex after craniotomy. These animal models are inappropriate for studying gliosis, as craniotomy itself induces gliosis. To address this, we developed a closed-head injury model and named "photo injury", which employs intense light illumination through a thinned-skull cranial window. Our prior work demonstrated that the gliosis of focal cerebral lesion after the photo injury does not encompass artificial gliosis and comprises two distinct reactive astrocyte subpopulations. The reactive astrocytes accumulated in the perilesional recovery area actively proliferate and express Nestin, a neural stem cell marker, while those in distal regions do not exhibit these traits. The present study investigated the role of perilesional reactive astrocytes (PRAs) in wound healing using the ablation of reactive astrocytes by the conditional knockout of Stat3. The extensive and non-selective ablation of reactive astrocytes in Nestin-Cre:Stat3f/f mice resulted in an exacerbation of injury, marked by increased inflammation and BBB disruption. On the other hand, GFAP-CreERT2:Stat3f/f mice exhibited the partial and selective ablation of the PRAs, while their exacerbation of injury was at the same extent as in Nestin-Cre:Stat3f/f mice. The comparison of these two mouse strains indicates that the PRAs are an essential astrocyte component for wound healing after closed-head injury, and their anti-inflammatory and regenerative functions are significantly affected even by incomplete accumulation. In addition, the reporter gene expression in the PRAs by GFAP-CreERT2 indicated a substantial elimination of these cells and an absence of differentiation into other cell types, despite Nestin expression, after wound healing. Thus, the accumulation and subsequent elimination of PRA are proposed as promising diagnostic and therapeutic avenues to bolster wound healing after closed-head injury.
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Affiliation(s)
- Nitin Sawant
- Biomolecular Organization, Department of Biology, Kobe University, Kobe, Hyogo 657-8501, Japan
| | - Airi Watanabe
- Biomolecular Organization, Department of Biology, Kobe University, Kobe, Hyogo 657-8501, Japan
| | - Haruna Ueda
- Biomolecular Organization, Department of Biology, Kobe University, Kobe, Hyogo 657-8501, Japan
| | - Hideyuki Okano
- Department of Physiology, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Mitsuhiro Morita
- Biomolecular Organization, Department of Biology, Kobe University, Kobe, Hyogo 657-8501, Japan; Application Division, Center of Optical Scattering Image Science, Kobe University, Kobe, Hyogo 657-8501, Japan.
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9
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Haroon H, Ho AMC, Gupta VK, Dasari S, Sellgren CM, Cervenka S, Engberg G, Eren F, Erhardt S, Sung J, Choi DS. Cerebrospinal fluid proteomic signatures are associated with symptom severity of first-episode psychosis. J Psychiatr Res 2024; 171:306-315. [PMID: 38340697 PMCID: PMC10995989 DOI: 10.1016/j.jpsychires.2024.02.002] [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: 09/18/2023] [Revised: 01/04/2024] [Accepted: 02/01/2024] [Indexed: 02/12/2024]
Abstract
Apart from their diagnostic, monitoring, or prognostic utility in clinical settings, molecular biomarkers may be instrumental in understanding the pathophysiology of psychiatric disorders, including schizophrenia. Using untargeted metabolomics, we recently identified eight cerebrospinal fluid (CSF) metabolites unique to first-episode psychosis (FEP) subjects compared to healthy controls (HC). In this study, we sought to investigate the CSF proteomic signatures associated with FEP. We employed 16-plex tandem mass tag (TMT) mass spectrometry (MS) to examine the relative protein abundance in CSF samples of 15 individuals diagnosed with FEP and 15 age-and-sex-matched healthy controls (HC). Multiple linear regression model (MLRM) identified 16 differentially abundant CSF proteins between FEP and HC at p < 0.01. Among them, the two most significant CSF proteins were collagen alpha-2 (IV) chain (COL4A2: standard mean difference [SMD] = -1.12, p = 1.64 × 10-4) and neuron-derived neurotrophic factor (NDNF: SMD = -1.03, p = 4.52 × 10-4) both of which were down-regulated in FEP subjects compared to HC. We also identified several potential CSF proteins associated with the pathophysiology and the symptom profile and severity in FEP subjects, including COL4A2, NDNF, hornerin (HRNR), contactin-6 (CNTN6), voltage-dependent calcium channel subunit alpha-2/delta-3 (CACNA2D3), tropomyosin alpha-3 chain (TPM3 and TPM4). Moreover, several protein signatures were associated with cognitive performance. Although the results need replication, our exploratory study suggests that CSF protein signatures can be used to increase the understanding of the pathophysiology of psychosis.
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Affiliation(s)
- Humza Haroon
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
| | - Ada Man-Choi Ho
- Department of Psychiatry and Psychology, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
| | - Vinod K Gupta
- Division of Surgery Research, Department of Surgery, Rochester, MN, USA; Microbiome Program, Center for Individualized Medicine, Rochester, MN, USA
| | - Surendra Dasari
- Division of Biomedical Statistics and Informatics, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
| | - Carl M Sellgren
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden; Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet & Stockholm Health Care Services, Region Stockholm, Stockholm, Sweden
| | - Simon Cervenka
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet & Stockholm Health Care Services, Region Stockholm, Stockholm, Sweden; Department of Medical Sciences, Psychiatry, Uppsala University, Uppsala, Sweden
| | - Göran Engberg
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Feride Eren
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Sophie Erhardt
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Jaeyun Sung
- Division of Surgery Research, Department of Surgery, Rochester, MN, USA; Microbiome Program, Center for Individualized Medicine, Rochester, MN, USA; Division of Rheumatology, Department of Internal Medicine, Rochester, MN, USA
| | - Doo-Sup Choi
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic College of Medicine and Science, Rochester, MN, USA; Department of Psychiatry and Psychology, Mayo Clinic College of Medicine and Science, Rochester, MN, USA; Neuroscience Program, Mayo Clinic College of Medicine and Science, Rochester, MN, USA.
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10
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Bettinetti-Luque M, Trujillo-Estrada L, Garcia-Fuentes E, Andreo-Lopez J, Sanchez-Varo R, Garrido-Sánchez L, Gómez-Mediavilla Á, López MG, Garcia-Caballero M, Gutierrez A, Baglietto-Vargas D. Adipose tissue as a therapeutic target for vascular damage in Alzheimer's disease. Br J Pharmacol 2024; 181:840-878. [PMID: 37706346 DOI: 10.1111/bph.16243] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 08/11/2023] [Accepted: 09/01/2023] [Indexed: 09/15/2023] Open
Abstract
Adipose tissue has recently been recognized as an important endocrine organ that plays a crucial role in energy metabolism and in the immune response in many metabolic tissues. With this regard, emerging evidence indicates that an important crosstalk exists between the adipose tissue and the brain. However, the contribution of adipose tissue to the development of age-related diseases, including Alzheimer's disease, remains poorly defined. New studies suggest that the adipose tissue modulates brain function through a range of endogenous biologically active factors known as adipokines, which can cross the blood-brain barrier to reach the target areas in the brain or to regulate the function of the blood-brain barrier. In this review, we discuss the effects of several adipokines on the physiology of the blood-brain barrier, their contribution to the development of Alzheimer's disease and their therapeutic potential. LINKED ARTICLES: This article is part of a themed issue From Alzheimer's Disease to Vascular Dementia: Different Roads Leading to Cognitive Decline. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v181.6/issuetoc.
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Affiliation(s)
- Miriam Bettinetti-Luque
- Departamento de Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga (IBIMA)-Plataforma BIONAND, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain
| | - Laura Trujillo-Estrada
- Departamento de Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga (IBIMA)-Plataforma BIONAND, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain
- CIBER de Enfermedades Neurodegenerativas (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain
| | - Eduardo Garcia-Fuentes
- Unidad de Gestión Clínica Aparato Digestivo, Hospital Universitario Virgen de la Victoria, Instituto de Investigación Biomédica de Málaga (IBIMA)-Plataforma BIONAND, Málaga, Spain
- CIBER de Enfermedades Hepáticas y Digestivas (CIBEREHD), Instituto de Salud Carlos III, Madrid, Spain
| | - Juana Andreo-Lopez
- Departamento de Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga (IBIMA)-Plataforma BIONAND, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain
| | - Raquel Sanchez-Varo
- Departamento de Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga (IBIMA)-Plataforma BIONAND, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain
- CIBER de Enfermedades Neurodegenerativas (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain
- Departamento de Fisiología Humana, Histología Humana, Anatomía Patológica y Educación Física y Deportiva, Facultad de Medicina, Universidad de Málaga, Málaga, Spain
| | - Lourdes Garrido-Sánchez
- CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
- Unidad de Gestión Clínica de Endocrinología y Nutrición, Hospital Universitario Virgen de la Victoria, Instituto de Investigación Biomédica de Málaga (IBIMA)-Plataforma BIONAND, Málaga, Spain
| | - Ángela Gómez-Mediavilla
- Departamento de Farmacología, Facultad de Medicina. Instituto Teófilo Hernando para la I+D de Fármacos, Universidad Autónoma de Madrid, Madrid, Spain
| | - Manuela G López
- Departamento de Farmacología, Facultad de Medicina. Instituto Teófilo Hernando para la I+D de Fármacos, Universidad Autónoma de Madrid, Madrid, Spain
- Instituto de Investigaciones Sanitarias (IIS-IP), Hospital Universitario de la Princesa, Madrid, Spain
| | - Melissa Garcia-Caballero
- Departamento de Biología Molecular y Bioquímica, Instituto de Investigación Biomédica de Málaga (IBIMA)-Plataforma BIONAND, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain
| | - Antonia Gutierrez
- Departamento de Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga (IBIMA)-Plataforma BIONAND, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain
- CIBER de Enfermedades Neurodegenerativas (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain
| | - David Baglietto-Vargas
- Departamento de Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga (IBIMA)-Plataforma BIONAND, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain
- CIBER de Enfermedades Neurodegenerativas (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain
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11
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Stahlke S, Frai J, Busse JF, Matschke V, Theiss C, Weber T, Herzog-Niescery J. Innovative in vivo rat model for global cerebral hypoxia: a new approach to investigate therapeutic and preventive drugs. Front Physiol 2024; 15:1293247. [PMID: 38405120 PMCID: PMC10885152 DOI: 10.3389/fphys.2024.1293247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 01/09/2024] [Indexed: 02/27/2024] Open
Abstract
Introduction: Severe acute global cerebral hypoxia can lead to significant disability in humans. Although different animal models have been described to study hypoxia, there is no endogenous model that considers hypoxia and its effect on the brain as an independent factor. Thus, we developed a minimally invasive rat model, which is based on the non-depolarizing muscle blocking agent rocuronium in anesthetized animals. This drug causes respiratory insufficiency by paralysis of the striated muscles. Methods: In this study, 14 rats underwent 12 min of hypoxemia with an oxygen saturation of approximately 60% measured by pulse oximetry; thereafter, animals obtained sugammadex to antagonize rocuronium immediately. Results: Compared to controls (14 rats, anesthesia only), hypoxic animals demonstrated significant morphological alterations in the hippocampus (cell decrease in the CA 1 region) and the cerebellum (Purkinje cell decrease), as well as significant changes in hypoxia markers in blood (Hif2α, Il1β, Tgf1β, Tnfα, S100b, cspg2, neuron-specific enolase), hippocampus (Il1β, Tnfα, S100b, cspg2, NSE), and cerebellum (Hif1α, Tnfα, S100b, cspg2, NSE). Effects were more pronounced in females than in males. Discussion: Consequently, this model is suitable to induce hypoxemia with consecutive global cerebral hypoxia. As significant morphological and biochemical changes were proven, it can be used to investigate therapeutic and preventive drugs for global cerebral hypoxia.
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Affiliation(s)
- Sarah Stahlke
- Institute of Anatomy, Department of Cytology, Ruhr-University Bochum, Bochum, Germany
| | - Jonas Frai
- Institute of Anatomy, Department of Cytology, Ruhr-University Bochum, Bochum, Germany
| | | | - Veronika Matschke
- Institute of Anatomy, Department of Cytology, Ruhr-University Bochum, Bochum, Germany
| | - Carsten Theiss
- Institute of Anatomy, Department of Cytology, Ruhr-University Bochum, Bochum, Germany
| | - Thomas Weber
- Department of Anesthesiology and Intensive Care Medicine, St.Josef-Hospital Bochum, Bochum, Germany
| | - Jennifer Herzog-Niescery
- Department of Anesthesiology and Intensive Care Medicine, St.Josef-Hospital Bochum, Bochum, Germany
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12
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Czyżewski W, Mazurek M, Sakwa L, Szymoniuk M, Pham J, Pasierb B, Litak J, Czyżewska E, Turek M, Piotrowski B, Torres K, Rola R. Astroglial Cells: Emerging Therapeutic Targets in the Management of Traumatic Brain Injury. Cells 2024; 13:148. [PMID: 38247839 PMCID: PMC10813911 DOI: 10.3390/cells13020148] [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: 11/29/2023] [Revised: 12/20/2023] [Accepted: 12/20/2023] [Indexed: 01/23/2024] Open
Abstract
Traumatic Brain Injury (TBI) represents a significant health concern, necessitating advanced therapeutic interventions. This detailed review explores the critical roles of astrocytes, key cellular constituents of the central nervous system (CNS), in both the pathophysiology and possible rehabilitation of TBI. Following injury, astrocytes exhibit reactive transformations, differentiating into pro-inflammatory (A1) and neuroprotective (A2) phenotypes. This paper elucidates the interactions of astrocytes with neurons, their role in neuroinflammation, and the potential for their therapeutic exploitation. Emphasized strategies encompass the utilization of endocannabinoid and calcium signaling pathways, hormone-based treatments like 17β-estradiol, biological therapies employing anti-HBGB1 monoclonal antibodies, gene therapy targeting Connexin 43, and the innovative technique of astrocyte transplantation as a means to repair damaged neural tissues.
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Affiliation(s)
- Wojciech Czyżewski
- Department of Didactics and Medical Simulation, Medical University of Lublin, 20-954 Lublin, Poland;
- Department of Neurosurgery and Pediatric Neurosurgery, Medical University of Lublin, 20-954 Lublin, Poland; (M.M.); (R.R.)
| | - Marek Mazurek
- Department of Neurosurgery and Pediatric Neurosurgery, Medical University of Lublin, 20-954 Lublin, Poland; (M.M.); (R.R.)
| | - Leon Sakwa
- Student Scientific Society, Kazimierz Pulaski University of Radom, 26-600 Radom, Poland;
| | - Michał Szymoniuk
- Student Scientific Association, Department of Neurosurgery and Pediatric Neurosurgery, Medical University of Lublin, 20-954 Lublin, Poland;
| | - Jennifer Pham
- Student Scientific Society, Medical University of Lublin, 20-954 Lublin, Poland; (J.P.); (M.T.)
| | - Barbara Pasierb
- Department of Dermatology, Radom Specialist Hospital, 26-600 Radom, Poland;
| | - Jakub Litak
- Department of Clinical Immunology, Medical University of Lublin, 20-954 Lublin, Poland;
| | - Ewa Czyżewska
- Department of Otolaryngology, Mazovian Specialist Hospital, 26-617 Radom, Poland;
| | - Michał Turek
- Student Scientific Society, Medical University of Lublin, 20-954 Lublin, Poland; (J.P.); (M.T.)
| | - Bartłomiej Piotrowski
- Institute of Automatic Control and Robotics, Warsaw University of Technology, 00-661 Warsaw, Poland;
| | - Kamil Torres
- Department of Didactics and Medical Simulation, Medical University of Lublin, 20-954 Lublin, Poland;
| | - Radosław Rola
- Department of Neurosurgery and Pediatric Neurosurgery, Medical University of Lublin, 20-954 Lublin, Poland; (M.M.); (R.R.)
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13
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Bou Sader Nehme S, Sanchez-Sarasua S, Adel R, Tuifua M, Ali A, Essawy AE, Abdel Salam S, Hleihel W, Boué-Grabot E, Landry M. P2X4 signalling contributes to hyperactivity but not pain sensitization comorbidity in a mouse model of attention deficit/hyperactivity disorder. Front Pharmacol 2024; 14:1288994. [PMID: 38239187 PMCID: PMC10794506 DOI: 10.3389/fphar.2023.1288994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 12/12/2023] [Indexed: 01/22/2024] Open
Abstract
Introduction: Attention deficit/hyperactivity disorder (ADHD) is a common neurodevelopmental disorder characterized by hyperactivity, inattention, and impulsivity that often persist until adulthood. Frequent comorbid disorders accompany ADHD and two thirds of children diagnosed with ADHD also suffer from behavioural disorders and from alteration of sensory processing. We recently characterized the comorbidity between ADHD-like symptoms and pain sensitisation in a pharmacological mouse model of ADHD, and we demonstrated the implication of the anterior cingulate cortex and posterior insula. However, few studies have explored the causal mechanisms underlying the interactions between ADHD and pain. The implication of inflammatory mechanisms has been suggested but the signalling pathways involved have not been explored. Methods: We investigated the roles of purinergic signalling, at the crossroad of pain and neuroinflammatory pathways, by using a transgenic mouse line that carries a total deletion of the P2X4 receptor. Results: We demonstrated that P2X4 deletion prevents hyperactivity in the mouse model of ADHD. In contrast, the absence of P2X4 lowered thermal pain thresholds in sham conditions and did not affect pain sensitization in ADHD-like conditions. We further analysed microglia reactivity and the expression of inflammatory markers in wild type and P2X4KO mice. Our results revealed that P2X4 deletion limits microglia reactivity but at the same time exerts proinflammatory effects in the anterior cingulate cortex and posterior insula. Conclusion: This dual role of P2X4 could be responsible for the differential effects noted on ADHD-like symptoms and pain sensitization and calls for further studies to investigate the therapeutic benefit of targeting the P2X4 receptor in ADHD patients.
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Affiliation(s)
- Sarah Bou Sader Nehme
- University of Bordeaux, CNRS, Institute of Neurodegenerative Diseases, IMN, UMR 5293, Bordeaux, France
- Department of Biology, Faculty of Arts and Sciences, Holy Spirit University of Kaslik, Jounieh, Lebanon
| | - Sandra Sanchez-Sarasua
- University of Bordeaux, CNRS, Institute of Neurodegenerative Diseases, IMN, UMR 5293, Bordeaux, France
- Faculty of Health Sciences, University of Jaume I, Castellon, Spain
| | - Ramy Adel
- Zoology Department, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Marie Tuifua
- University of Bordeaux, CNRS, Institute of Neurodegenerative Diseases, IMN, UMR 5293, Bordeaux, France
| | - Awatef Ali
- Zoology Department, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Amina E. Essawy
- Zoology Department, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Sherine Abdel Salam
- Zoology Department, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Walid Hleihel
- Department of Biology, Faculty of Arts and Sciences, Holy Spirit University of Kaslik, Jounieh, Lebanon
| | - Eric Boué-Grabot
- University of Bordeaux, CNRS, Institute of Neurodegenerative Diseases, IMN, UMR 5293, Bordeaux, France
| | - Marc Landry
- University of Bordeaux, CNRS, Institute of Neurodegenerative Diseases, IMN, UMR 5293, Bordeaux, France
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14
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Bernardino PN, Hobson BA, Huddleston SL, Andrew PM, MacMahon JA, Saito NH, Porter VA, Bruun DA, Harvey DJ, Garbow JR, Gelli A, Chaudhari AJ, Lein PJ. Time- and region-dependent blood-brain barrier impairment in a rat model of organophosphate-induced status epilepticus. Neurobiol Dis 2023; 187:106316. [PMID: 37797902 PMCID: PMC11000668 DOI: 10.1016/j.nbd.2023.106316] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 09/26/2023] [Accepted: 10/02/2023] [Indexed: 10/07/2023] Open
Abstract
Acute organophosphate (OP) intoxication can trigger seizures that progress to status epilepticus (SE), and survivors often develop chronic morbidities, including spontaneous recurrent seizures (SRS). The pathogenic mechanisms underlying OP-induced SRS are unknown, but increased BBB permeability is hypothesized to be involved. Previous studies reported BBB leakage following OP-induced SE, but key information regarding time and regional distribution of BBB impairment during the epileptogenic period is missing. To address this data gap, we characterized the spatiotemporal progression of BBB impairment during the first week post-exposure in a rat model of diisopropylfluorophosphate-induced SE, using MRI and albumin immunohistochemistry. Increased BBB permeability, which was detected at 6 h and persisted up to 7 d post-exposure, was most severe and persistent in the piriform cortex and amygdala, moderate but persistent in the thalamus, and less severe and transient in the hippocampus and somatosensory cortex. The extent of BBB leakage was positively correlated with behavioral seizure severity, with the strongest association identified in the piriform cortex and amygdala. These findings provide evidence of the duration, magnitude and spatial breakdown of the BBB during the epileptogenic period following OP-induced SE and support BBB regulation as a viable therapeutic target for preventing SRS following acute OP intoxication.
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Affiliation(s)
- Pedro N Bernardino
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, CA 95616, USA.
| | - Brad A Hobson
- Center for Molecular and Genomic Imaging, University of California, Davis, Davis, CA 95616, USA.
| | - Sydney L Huddleston
- Center for Molecular and Genomic Imaging, University of California, Davis, Davis, CA 95616, USA.
| | - Peter M Andrew
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, CA 95616, USA.
| | - Jeremy A MacMahon
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, CA 95616, USA.
| | - Naomi H Saito
- Department of Public Health Sciences, University of California, Davis, School of Medicine, Davis, CA 95616, USA.
| | - Valerie A Porter
- Department of Biomedical Engineering, University of California, Davis, College of Engineering, Davis, CA 95616, USA.
| | - Donald A Bruun
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, CA 95616, USA.
| | - Danielle J Harvey
- Department of Public Health Sciences, University of California, Davis, School of Medicine, Davis, CA 95616, USA.
| | - Joel R Garbow
- Biomedical Magnetic Resonance Center, Mallinckrodt Institute of Radiology, School of Medicine, Washington University in St. Louis, St. Louis, MO 63110, USA.
| | - Angie Gelli
- Department of Pharmacology, University of California, Davis, School of Medicine, Davis, CA 95616, USA.
| | - Abhijit J Chaudhari
- Center for Molecular and Genomic Imaging, University of California, Davis, Davis, CA 95616, USA; Department of Radiology, University of California, Davis, School of Medicine, Sacramento, CA 95817, USA.
| | - Pamela J Lein
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, CA 95616, USA.
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15
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Collyer E, Blanco-Suarez E. Astrocytes in stroke-induced neurodegeneration: a timeline. FRONTIERS IN MOLECULAR MEDICINE 2023; 3:1240862. [PMID: 39086680 PMCID: PMC11285566 DOI: 10.3389/fmmed.2023.1240862] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 08/22/2023] [Indexed: 08/02/2024]
Abstract
Stroke is a condition characterized by sudden deprivation of blood flow to a brain region and defined by different post-injury phases, which involve various molecular and cellular cascades. At an early stage during the acute phase, fast initial cell death occurs, followed by inflammation and scarring. This is followed by a sub-acute or recovery phase when endogenous plasticity mechanisms may promote spontaneous recovery, depending on various factors that are yet to be completely understood. At later time points, stroke leads to greater neurodegeneration compared to healthy controls in both clinical and preclinical studies, this is evident during the chronic phase when recovery slows down and neurodegenerative signatures appear. Astrocytes have been studied in the context of ischemic stroke due to their role in glutamate re-uptake, as components of the neurovascular unit, as building blocks of the glial scar, and synaptic plasticity regulators. All these roles render astrocytes interesting, yet understudied players in the context of stroke-induced neurodegeneration. With this review, we provide a summary of previous research, highlight astrocytes as potential therapeutic targets, and formulate questions about the role of astrocytes in the mechanisms during the acute, sub-acute, and chronic post-stroke phases that may lead to neurorestoration or neurodegeneration.
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Affiliation(s)
| | - Elena Blanco-Suarez
- Department of Neuroscience, Vickie and Jack Farber Institute for Neuroscience, Thomas Jefferson University, Philadelphia, PA, United States
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16
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Peng W, Xie Y, Liu Y, Xu J, Yuan F, Li C, Qin T, Lu H, Duan C, Hu J. Targeted delivery of CD163 + macrophage-derived small extracellular vesicles via RGD peptides promote vascular regeneration and stabilization after spinal cord injury. J Control Release 2023; 361:750-765. [PMID: 37586563 DOI: 10.1016/j.jconrel.2023.08.025] [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: 01/19/2023] [Revised: 08/08/2023] [Accepted: 08/11/2023] [Indexed: 08/18/2023]
Abstract
Targeted delivery of small extracellular vesicles (sEVs) with low immunogenicity and fewer undesirable side effects are needed for spinal cord injury (SCI) therapy. Here, we show that RGD (Arg-Gly-Asp) peptide-decorated CD163+ macrophage-derived sEVs can deliver TGF-β to the neovascular endothelial cells of the injured site and improve neurological function after SCI. CD163+ macrophages are M2 macrophages that express TGF-β and are reported to promote angiogenesis and vascular stabilization in various diseases. Enriched TGF-β EVs were crucial in angiogenesis and tissue repair. However, TGF-β also boosts the formation of fibrous or glial scars, detrimental to neurological recovery. Our results found RGD-modified CD163+ sEVs accumulated in the injured region and were taken up by neovascular endothelial cells. Furthermore, RGD-CD163+ sEVs promoted vascular regeneration and stabilization in vitro and in vivo, resulting in substantial functional recovery post-SCI. These data suggest that RGD-CD163+ sEVs may be a potential strategy for treating SCI.
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Affiliation(s)
- Wei Peng
- Department of Spine Surgery and Orthopaedics, Xiangya Hospital, Central South University, Changsha, China; Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, China; Hunan Engineering Research Center of Sports and Health, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China; Department of Spine Surgery, Wuxi 9th Affiliated Hospital of Soochow University, Wuxi, China
| | - Yong Xie
- Department of Spine Surgery and Orthopaedics, Xiangya Hospital, Central South University, Changsha, China; Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, China; Hunan Engineering Research Center of Sports and Health, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Yudong Liu
- Department of Spine Surgery and Orthopaedics, Xiangya Hospital, Central South University, Changsha, China; Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, China; Hunan Engineering Research Center of Sports and Health, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Jiaqi Xu
- Department of Spine Surgery and Orthopaedics, Xiangya Hospital, Central South University, Changsha, China; Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, China; Hunan Engineering Research Center of Sports and Health, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Feifei Yuan
- Department of Spine Surgery and Orthopaedics, Xiangya Hospital, Central South University, Changsha, China; Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, China; Hunan Engineering Research Center of Sports and Health, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Chengjun Li
- Department of Spine Surgery and Orthopaedics, Xiangya Hospital, Central South University, Changsha, China; Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, China; Hunan Engineering Research Center of Sports and Health, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Tian Qin
- Department of Spine Surgery and Orthopaedics, Xiangya Hospital, Central South University, Changsha, China; Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, China; Hunan Engineering Research Center of Sports and Health, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Hongbin Lu
- Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, China; Hunan Engineering Research Center of Sports and Health, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China; Department of Sports Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Chunyue Duan
- Department of Spine Surgery and Orthopaedics, Xiangya Hospital, Central South University, Changsha, China; Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, China; Hunan Engineering Research Center of Sports and Health, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China.
| | - Jianzhong Hu
- Department of Spine Surgery and Orthopaedics, Xiangya Hospital, Central South University, Changsha, China; Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, China; Hunan Engineering Research Center of Sports and Health, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China.
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17
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Atef MM, Mostafa YM, Ahmed AAM, El-Sayed NM. Simvastatin attenuates aluminium chloride-induced neurobehavioral impairments through activation of TGF-β1/ SMAD2 and GSK3β/β-catenin signalling pathways. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2023; 102:104220. [PMID: 37454825 DOI: 10.1016/j.etap.2023.104220] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 06/19/2023] [Accepted: 07/10/2023] [Indexed: 07/18/2023]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disease characterised by the presence of β-amyloid plaques and acetylcholine depletion leading to neurobehavioral defects. AD was contributed also with downregulation of TGF-β1/SMAD2 and GSK3β/β-catenin pathways. Simvastatin (SMV) improved memory function experimentally and clinically. Hence, this study aimed to investigate the mechanistic role of SMV against aluminium chloride (AlCl3) induced neurobehavioral impairments. AD was induced by AlCl3 (50 mg/kg) for 6 weeks. Mice received Simvastatin (10 or 20 mg/kg) or Donepezil (3 mg/kg) for 6 weeks after that the histopathological, immunohistochemical and biochemical test were examined. Treatment with SMV improved the memory deterioration induced by AlCl3 with significant recovery of the histopathological changes. This was concomitant with the decrease of AChE and Aβ (1-42). SMV provides its neuroprotective effect through upregulating the protein expression of β-catenin, TGF-β1 and downregulating the expression of GSK3β, TLR4 and p-SMAD2.
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Affiliation(s)
| | - Yasser M Mostafa
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt; Department of Pharmacology & Toxicology, Faculty of Pharmacy, Badr University in Cairo, Egypt
| | - Amal A M Ahmed
- Department of Cytology & Histology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
| | - Norhan M El-Sayed
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt.
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Bedolla A, Wegman E, Weed M, Paranjpe A, Alkhimovitch A, Ifergan I, McClain L, Luo Y. Microglia-derived TGF-β1 ligand maintains microglia homeostasis via autocrine mechanism and is critical for normal cognitive function in adult mouse brain. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.07.05.547814. [PMID: 37461569 PMCID: PMC10349967 DOI: 10.1101/2023.07.05.547814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 07/23/2023]
Abstract
While TGF-β signaling is essential for microglial function, the cellular source of TGF-β ligand and its spatial regulation remains unclear in the adult CNS. Our data support that microglia, not astrocytes or neurons, are the primary producers of TGF-β1 ligands needed for microglial homeostasis. Microglia (MG)-Tgfb1 inducible knockout (iKO) leads to the activation of microglia featuring a dyshomeostatic transcriptomic profile that resembles disease-associated microglia (DAMs), injury-associated microglia, and aged microglia, suggesting that microglial self-produced TGF-β1 ligands are important in the adult CNS. Interestingly, astrocytes in MG-Tgfb1 iKO mice show a transcriptome profile that closely aligns with A1-like astrocytes. Additionally, using sparse mosaic single-cell microglia iKO of TGF-β1 ligand, we established an autocrine mechanism for TGF-β signaling. Importantly MG-Tgfb1 iKO mice show cognitive deficits, supporting that precise spatial regulation of TGF-β1 ligand derived from microglia is critical for the maintenance of brain homeostasis and normal cognitive function in the adult brain.
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Affiliation(s)
- Alicia Bedolla
- Department of Molecular and Cellular Biosciences, University of Cincinnati, Cincinnati, OH 45229, USA
- Neuroscience Graduate Program, University of Cincinnati, Cincinnati, OH 45229, USA
| | - Elliot Wegman
- Department of Molecular and Cellular Biosciences, University of Cincinnati, Cincinnati, OH 45229, USA
| | - Max Weed
- Department of Molecular and Cellular Biosciences, University of Cincinnati, Cincinnati, OH 45229, USA
| | - Aditi Paranjpe
- Information Services, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Anastasia Alkhimovitch
- Department of Molecular and Cellular Biosciences, University of Cincinnati, Cincinnati, OH 45229, USA
- Division of Immunobiology, Cincinnati Children’s Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Igal Ifergan
- Department of Molecular and Cellular Biosciences, University of Cincinnati, Cincinnati, OH 45229, USA
- Neuroscience Graduate Program, University of Cincinnati, Cincinnati, OH 45229, USA
- Division of Immunobiology, Cincinnati Children’s Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Lucas McClain
- Department of Molecular and Cellular Biosciences, University of Cincinnati, Cincinnati, OH 45229, USA
| | - Yu Luo
- Department of Molecular and Cellular Biosciences, University of Cincinnati, Cincinnati, OH 45229, USA
- Neuroscience Graduate Program, University of Cincinnati, Cincinnati, OH 45229, USA
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19
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Kapoor M, Chinnathambi S. TGF-β1 signalling in Alzheimer's pathology and cytoskeletal reorganization: a specialized Tau perspective. J Neuroinflammation 2023; 20:72. [PMID: 36915196 PMCID: PMC10012507 DOI: 10.1186/s12974-023-02751-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Accepted: 02/23/2023] [Indexed: 03/16/2023] Open
Abstract
Microtubule-associated protein, Tau has been implicated in Alzheimer's disease for its detachment from microtubules and formation of insoluble intracellular aggregates within the neurons. Recent findings have suggested the expulsion of Tau seeds in the extracellular domain and their prion-like propagation between neurons. Transforming Growth Factor-β1 (TGF-β1) is a ubiquitously occurring cytokine reported to carry out immunomodulation and neuroprotection in the brain. TGF-β-mediated regulation occurs at the level of neuronal survival and differentiation, glial activation (astrocyte and microglia), amyloid production-distribution-clearance and neurofibrillary tangle formation, all of which contributes to Alzheimer's pathophysiology. Its role in the reorganization of cytoskeletal architecture and remodelling of extracellular matrix to facilitate cellular migration has been well-documented. Microglia are the resident immune sentinels of the brain responsible for surveying the local microenvironment, migrating towards the beacon of pertinent damage and phagocytosing the cellular debris or patho-protein deposits at the site of insult. Channelizing microglia to target extracellular Tau could be a good strategy to combat the prion-like transmission and seeding problem in Alzheimer's disease. The current review focuses on reaffirming the role of TGF-β1 signalling in Alzheimer's pathology and cytoskeletal reorganization and considers utilizing the approach of TGF-β-triggered microglia-mediated targeting of extracellular patho-protein, Tau, as a possible potential strategy to combat Alzheimer's disease.
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Affiliation(s)
- Mahima Kapoor
- Neurobiology Group, Division of Biochemical Sciences, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, 411008, Pune, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Subashchandrabose Chinnathambi
- Neurobiology Group, Division of Biochemical Sciences, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, 411008, Pune, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India. .,Department of Neurochemistry, National Institute of Mental Health and Neuro Sciences (NIMHANS), Institute of National Importance, Hosur Road, Bangalore, 560029, Karnataka, India.
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20
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Li C, Meng X, Wang L, Dai X. Mechanism of action of non-coding RNAs and traditional Chinese medicine in myocardial fibrosis: Focus on the TGF-β/Smad signaling pathway. Front Pharmacol 2023; 14:1092148. [PMID: 36843918 PMCID: PMC9947662 DOI: 10.3389/fphar.2023.1092148] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 01/30/2023] [Indexed: 02/11/2023] Open
Abstract
Cardiac fibrosis is a serious public health problem worldwide that is closely linked to progression of many cardiovascular diseases (CVDs) and adversely affects both the disease process and clinical prognosis. Numerous studies have shown that the TGF-β/Smad signaling pathway plays a key role in the progression of cardiac fibrosis. Therefore, targeted inhibition of the TGF-β/Smad signaling pathway may be a therapeutic measure for cardiac fibrosis. Currently, as the investigation on non-coding RNAs (ncRNAs) move forward, a variety of ncRNAs targeting TGF-β and its downstream Smad proteins have attracted high attention. Besides, Traditional Chinese Medicine (TCM) has been widely used in treating the cardiac fibrosis. As more and more molecular mechanisms of natural products, herbal formulas, and proprietary Chinese medicines are revealed, TCM has been proven to act on cardiac fibrosis by modulating multiple targets and signaling pathways, especially the TGF-β/Smad. Therefore, this work summarizes the roles of TGF-β/Smad classical and non-classical signaling pathways in the cardiac fibrosis, and discusses the recent research advances in ncRNAs targeting the TGF-β/Smad signaling pathway and TCM against cardiac fibrosis. It is hoped, in this way, to give new insights into the prevention and treatment of cardiac fibrosis.
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Affiliation(s)
- Chunjun Li
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Xiangxiang Meng
- College of Marxism, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Lina Wang
- First College of Clinical Medical, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Xia Dai
- College of Health, Shandong University of Traditional Chinese Medicine, Jinan, China,*Correspondence: Xia Dai,
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21
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Zhang Y, Zhao X, Zhang Y, Zeng F, Yan S, Chen Y, Li Z, Zhou D, Liu L. The role of circadian clock in astrocytes: From cellular functions to ischemic stroke therapeutic targets. Front Neurosci 2022; 16:1013027. [PMID: 36570843 PMCID: PMC9772621 DOI: 10.3389/fnins.2022.1013027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Accepted: 11/10/2022] [Indexed: 12/14/2022] Open
Abstract
Accumulating evidence suggests that astrocytes, the abundant cell type in the central nervous system (CNS), play a critical role in maintaining the immune response after cerebral infarction, regulating the blood-brain barrier (BBB), providing nutrients to the neurons, and reuptake of glutamate. The circadian clock is an endogenous timing system that controls and optimizes biological processes. The central circadian clock and the peripheral clock are consistent, controlled by various circadian components, and participate in the pathophysiological process of astrocytes. Existing evidence shows that circadian rhythm controls the regulation of inflammatory responses by astrocytes in ischemic stroke (IS), regulates the repair of the BBB, and plays an essential role in a series of pathological processes such as neurotoxicity and neuroprotection. In this review, we highlight the importance of astrocytes in IS and discuss the potential role of the circadian clock in influencing astrocyte pathophysiology. A comprehensive understanding of the ability of the circadian clock to regulate astrocytes after stroke will improve our ability to predict the targets and biological functions of the circadian clock and gain insight into the basis of its intervention mechanism.
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Affiliation(s)
- Yuxing Zhang
- Department of Neurology, The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China,The Graduate School, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Xin Zhao
- The Medical School, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Ying Zhang
- Department of Neurology, The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China,The Graduate School, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Fukang Zeng
- Department of Neurology, The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China,The Graduate School, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Siyang Yan
- Department of Neurology, The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Yao Chen
- Department of Neurology, The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Zhong Li
- Department of Neurology, The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Desheng Zhou
- Department of Neurology, The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China,Desheng Zhou,
| | - Lijuan Liu
- Department of Neurology, The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China,*Correspondence: Lijuan Liu,
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22
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Need for a Paradigm Shift in the Treatment of Ischemic Stroke: The Blood-Brain Barrier. Int J Mol Sci 2022; 23:ijms23169486. [PMID: 36012745 PMCID: PMC9409167 DOI: 10.3390/ijms23169486] [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: 07/12/2022] [Revised: 08/04/2022] [Accepted: 08/18/2022] [Indexed: 11/17/2022] Open
Abstract
Blood-brain barrier (BBB) integrity is essential to maintaining brain health. Aging-related alterations could lead to chronic progressive leakiness of the BBB, which is directly correlated with cerebrovascular diseases. Indeed, the BBB breakdown during acute ischemic stroke is critical. It remains unclear, however, whether BBB dysfunction is one of the first events that leads to brain disease or a down-stream consequence. This review will focus on the BBB dysfunction associated with cerebrovascular disease. An added difficulty is its association with the deleterious or reparative effect, which depends on the stroke phase. We will first outline the BBB structure and function. Then, we will focus on the spatiotemporal chronic, slow, and progressive BBB alteration related to ischemic stroke. Finally, we will propose a new perspective on preventive therapeutic strategies associated with brain aging based on targeting specific components of the BBB. Understanding BBB age-evolutions will be beneficial for new drug development and the identification of the best performance window times. This could have a direct impact on clinical translation and personalised medicine.
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23
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The promise of the TGF-β superfamily as a therapeutic target for Parkinson's disease. Neurobiol Dis 2022; 171:105805. [PMID: 35764291 DOI: 10.1016/j.nbd.2022.105805] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 06/21/2022] [Accepted: 06/22/2022] [Indexed: 11/20/2022] Open
Abstract
A large body of evidence underscore the regulatory role of TGF-β superfamily in the central nervous system. Components of the TGF-β superfamily modulate key events during embryonic brain development and adult brain tissue injury repair. With respect to Parkinson's disease (PD), TGF-ß signaling pathways are implicated in the differentiation, maintenance and synaptic function of the dopaminergic neurons, as well as in processes related to the activation state of astrocytes and microglia. In vitro and in vivo studies using toxin models, have interrogated on the dopaminotrophic and protective role of the TGF-β superfamily members. The evolution of genetic and animal models of PD that more closely recapitulate the disease condition has made possible the dissection of intracellular pathways in response to TGF-ß treatment. Although the first clinical trials using GDNF did not meet their primary endpoints, substantial work has been carried out to reappraise the TGF-β superfamily's clinical benefit.
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