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Zhang L, Wei J, Liu X, Li D, Pang X, Chen F, Cao H, Lei P. Gut microbiota-astrocyte axis: new insights into age-related cognitive decline. Neural Regen Res 2025; 20:990-1008. [PMID: 38989933 PMCID: PMC11438350 DOI: 10.4103/nrr.nrr-d-23-01776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 03/04/2024] [Indexed: 07/12/2024] Open
Abstract
With the rapidly aging human population, age-related cognitive decline and dementia are becoming increasingly prevalent worldwide. Aging is considered the main risk factor for cognitive decline and acts through alterations in the composition of the gut microbiota, microbial metabolites, and the functions of astrocytes. The microbiota-gut-brain axis has been the focus of multiple studies and is closely associated with cognitive function. This article provides a comprehensive review of the specific changes that occur in the composition of the gut microbiota and microbial metabolites in older individuals and discusses how the aging of astrocytes and reactive astrocytosis are closely related to age-related cognitive decline and neurodegenerative diseases. This article also summarizes the gut microbiota components that affect astrocyte function, mainly through the vagus nerve, immune responses, circadian rhythms, and microbial metabolites. Finally, this article summarizes the mechanism by which the gut microbiota-astrocyte axis plays a role in Alzheimer's and Parkinson's diseases. Our findings have revealed the critical role of the microbiota-astrocyte axis in age-related cognitive decline, aiding in a deeper understanding of potential gut microbiome-based adjuvant therapy strategies for this condition.
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Affiliation(s)
- Lan Zhang
- Haihe Laboratory of Cell Ecosystem, Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Jingge Wei
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Xilei Liu
- Department of Urology, Tianjin Medical University General Hospital, Tianjin, China
| | - Dai Li
- Haihe Laboratory of Cell Ecosystem, Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Xiaoqi Pang
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Fanglian Chen
- Tianjin Neurological Institution, Tianjin Medical University General Hospital, Tianjin, China
| | - Hailong Cao
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Ping Lei
- Haihe Laboratory of Cell Ecosystem, Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Tianjin, China
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2
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Li Y, Xu X, Wu X, Li J, Chen S, Chen D, Li G, Tang Z. Cell polarization in ischemic stroke: molecular mechanisms and advances. Neural Regen Res 2025; 20:632-645. [PMID: 38886930 PMCID: PMC11433909 DOI: 10.4103/nrr.nrr-d-23-01336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 10/23/2023] [Accepted: 12/18/2023] [Indexed: 06/20/2024] Open
Abstract
Ischemic stroke is a cerebrovascular disease associated with high mortality and disability rates. Since the inflammation and immune response play a central role in driving ischemic damage, it becomes essential to modulate excessive inflammatory reactions to promote cell survival and facilitate tissue repair around the injury site. Various cell types are involved in the inflammatory response, including microglia, astrocytes, and neutrophils, each exhibiting distinct phenotypic profiles upon stimulation. They display either proinflammatory or anti-inflammatory states, a phenomenon known as 'cell polarization.' There are two cell polarization therapy strategies. The first involves inducing cells into a neuroprotective phenotype in vitro, then reintroducing them autologously. The second approach utilizes small molecular substances to directly affect cells in vivo. In this review, we elucidate the polarization dynamics of the three reactive cell populations (microglia, astrocytes, and neutrophils) in the context of ischemic stroke, and provide a comprehensive summary of the molecular mechanisms involved in their phenotypic switching. By unraveling the complexity of cell polarization, we hope to offer insights for future research on neuroinflammation and novel therapeutic strategies for ischemic stroke.
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Affiliation(s)
- Yuanwei Li
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Xiaoxiao Xu
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Xuan Wu
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Jiarui Li
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Shiling Chen
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Danyang Chen
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Gaigai Li
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Zhouping Tang
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
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3
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Liu Y, Wei C, Yang Y, Zhu Z, Ren Y, Pi R. In situ chemical reprogramming of astrocytes into neurons: A new hope for the treatment of central neurodegenerative diseases? Eur J Pharmacol 2024; 982:176930. [PMID: 39179093 DOI: 10.1016/j.ejphar.2024.176930] [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: 05/16/2024] [Revised: 07/18/2024] [Accepted: 08/21/2024] [Indexed: 08/26/2024]
Abstract
Central neurodegenerative disorders (e.g. Alzheimer's disease (AD) and Parkinson's disease (PD)) are tightly associated with extensive neuron loss. Current therapeutic interventions merely mitigate the symptoms of these diseases, falling short of addressing the fundamental issue of neuron loss. Cell reprogramming, involving the transition of a cell from one gene expression profile to another, has made significant strides in the conversion between diverse somatic cell types. This advancement has been facilitated by gene editing techniques or the synergistic application of small molecules, enabling the conversion of glial cells into functional neurons. Despite this progress, the potential for in situ reprogramming of astrocytes in treating neurodegenerative disorders faces challenges such as immune rejection and genotoxicity. A novel avenue emerges through chemical reprogramming of astrocytes utilizing small molecules, circumventing genotoxic effects and unlocking substantial clinical utility. Recent studies have successfully demonstrated the in situ conversion of astrocytes into neurons using small molecules. Nonetheless, these findings have sparked debates, encompassing queries regarding the origin of newborn neurons, pivotal molecular targets, and alterations in metabolic pathways. This review succinctly delineates the background of astrocytes reprogramming, meticulously surveys the principal classes of small molecule combinations employed thus far, and examines the complex signaling pathways they activate. Finally, this article delves into the potential vistas awaiting exploration in the realm of astrocytes chemical reprogramming, heralding a promising future for advancing our understanding and treatment of neurodegenerative diseases.
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Affiliation(s)
- Yuan Liu
- School of Medicine, Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, China
| | - Cailv Wei
- School of Medicine, Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, China
| | - Yang Yang
- School of Medicine, Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, China
| | - Zeyu Zhu
- School of Medicine, Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, China
| | - Yu Ren
- School of Medicine, Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, China
| | - Rongbiao Pi
- School of Medicine, Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, China; International Joint Laboratory (SYSU-PolyU HK) of Novel Anti-Dementia Drugs of Guangdong, Shenzhen, 518107, China; Guangdong Province Key Laboratory of Brain Function and Disease, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China.
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4
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Dong W, Liu S, Li S, Wang Z. Cell reprogramming therapy for Parkinson's disease. Neural Regen Res 2024; 19:2444-2455. [PMID: 38526281 PMCID: PMC11090434 DOI: 10.4103/1673-5374.390965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/23/2023] [Accepted: 10/08/2023] [Indexed: 03/26/2024] Open
Abstract
Parkinson's disease is typically characterized by the progressive loss of dopaminergic neurons in the substantia nigra pars compacta. Many studies have been performed based on the supplementation of lost dopaminergic neurons to treat Parkinson's disease. The initial strategy for cell replacement therapy used human fetal ventral midbrain and human embryonic stem cells to treat Parkinson's disease, which could substantially alleviate the symptoms of Parkinson's disease in clinical practice. However, ethical issues and tumor formation were limitations of its clinical application. Induced pluripotent stem cells can be acquired without sacrificing human embryos, which eliminates the huge ethical barriers of human stem cell therapy. Another widely considered neuronal regeneration strategy is to directly reprogram fibroblasts and astrocytes into neurons, without the need for intermediate proliferation states, thus avoiding issues of immune rejection and tumor formation. Both induced pluripotent stem cells and direct reprogramming of lineage cells have shown promising results in the treatment of Parkinson's disease. However, there are also ethical concerns and the risk of tumor formation that need to be addressed. This review highlights the current application status of cell reprogramming in the treatment of Parkinson's disease, focusing on the use of induced pluripotent stem cells in cell replacement therapy, including preclinical animal models and progress in clinical research. The review also discusses the advancements in direct reprogramming of lineage cells in the treatment of Parkinson's disease, as well as the controversy surrounding in vivo reprogramming. These findings suggest that cell reprogramming may hold great promise as a potential strategy for treating Parkinson's disease.
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Affiliation(s)
- Wenjing Dong
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, Yunnan Province, China
- Yunnan Key Laboratory of Primate Biomedical Research, Kunming, Yunnan Province, China
| | - Shuyi Liu
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, Yunnan Province, China
- Yunnan Key Laboratory of Primate Biomedical Research, Kunming, Yunnan Province, China
| | - Shangang Li
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, Yunnan Province, China
- Yunnan Key Laboratory of Primate Biomedical Research, Kunming, Yunnan Province, China
| | - Zhengbo Wang
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, Yunnan Province, China
- Yunnan Key Laboratory of Primate Biomedical Research, Kunming, Yunnan Province, China
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5
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Wu J, Ren R, Chen T, Su LD, Tang T. Neuroimmune and neuroinflammation response for traumatic brain injury. Brain Res Bull 2024; 217:111066. [PMID: 39241894 DOI: 10.1016/j.brainresbull.2024.111066] [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: 06/15/2024] [Revised: 08/18/2024] [Accepted: 09/02/2024] [Indexed: 09/09/2024]
Abstract
Traumatic brain injury (TBI) is one of the major diseases leading to mortality and disability, causing a serious disease burden on individuals' ordinary lives as well as socioeconomics. In primary injury, neuroimmune and neuroinflammation are both responsible for the TBI. Besides, extensive and sustained injury induced by neuroimmune and neuroinflammation also prolongs the course and worsens prognosis of TBI. Therefore, this review aims to explore the role of neuroimmune, neuroinflammation and factors associated them in TBI as well as the therapies for TBI. Thus, we conducted by searching PubMed, Scopus, and Web of Science databases for articles published between 2010 and 2023. Keywords included "traumatic brain injury," "neuroimmune response," "neuroinflammation," "astrocytes," "microglia," and "NLRP3." Articles were selected based on relevance and quality of evidence. On this basis, we provide the cellular and molecular mechanisms of TBI-induced both neuroimmune and neuroinflammation response, as well as the different factors affecting them, are introduced based on physiology of TBI, which supply a clear overview in TBI-induced chain-reacting, for a better understanding of TBI and to offer more thoughts on the future therapies for TBI.
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Affiliation(s)
- Junyun Wu
- Neuroscience Care Unit, Second Affiliated Hospital of Zhejiang University School of Medicine, 88 Jiefang Road, Hangzhou, Zhejiang 310009, China
| | - Reng Ren
- Neuroscience Care Unit, Second Affiliated Hospital of Zhejiang University School of Medicine, 88 Jiefang Road, Hangzhou, Zhejiang 310009, China
| | - Tao Chen
- Neuroscience Care Unit, Second Affiliated Hospital of Zhejiang University School of Medicine, 88 Jiefang Road, Hangzhou, Zhejiang 310009, China
| | - Li-Da Su
- Neuroscience Care Unit, Second Affiliated Hospital of Zhejiang University School of Medicine, 88 Jiefang Road, Hangzhou, Zhejiang 310009, China.
| | - Tianchi Tang
- Department of Neurosurgery, Second Affiliated Hospital of Zhejiang University School of Medicine, 88 Jiefang Road, Hangzhou, Zhejiang 310009, China.
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6
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Yuan X, Xia Y, Jiang P, Chen J, Wang C. Neuroinflammation Targeting Pyroptosis: Molecular Mechanisms and Therapeutic Perspectives in Stroke. Mol Neurobiol 2024; 61:7448-7465. [PMID: 38383921 DOI: 10.1007/s12035-024-04050-6] [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: 11/16/2023] [Accepted: 02/06/2024] [Indexed: 02/23/2024]
Abstract
Pyroptosis is a recently identified type of pro-inflammatory programmed cell death (PCD) mediated by inflammasomes and nucleotide oligomerization domain-like receptors (NLs) and dependent on members of the caspase family. Pyroptosis has been widely reported to participate in the occurrence and progression of various inflammatory diseases, including stroke, a frequently lethal disease with high prevalence and many complications. To date, there have been no effectively therapeutic strategies and methods for treating stroke. Pyroptosis is thought to be closely related to the occurrence and development of stroke. Understanding inflammatory responses induced by the activation of pyroptosis would be hopeful to provide feasible approaches and strategies. Targeting on molecules in the upstream or downstream of pyroptosis pathway has shown promise in the treatment of stroke. The present review summarizes current research on the characteristics of pyroptosis, the function and pathological phenomena of pyroptosis in stroke, the molecule mechanisms related to inflammatory pathways, and the drugs and other molecules that can affect outcomes after stroke. These findings may help identify possible targets or new strategies for the diagnosis and treatment of stroke.
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Affiliation(s)
- Xiwen Yuan
- Neurobiology Key Laboratory of Jining Medical University, Jining, 272067, China
| | - Yiwen Xia
- Neurobiology Key Laboratory of Jining Medical University, Jining, 272067, China
| | - Pei Jiang
- Institute of Clinical Pharmacy & Pharmacology, Jining First People's Hospital, Jining Medical University, Jining, 272011, China
| | - Jing Chen
- Neurobiology Key Laboratory of Jining Medical University, Jining, 272067, China.
- Division of Biomedical Sciences, Warwick Medical School, University of Warwick, Coventry, CV4 7AL, UK.
| | - Chunmei Wang
- Neurobiology Key Laboratory of Jining Medical University, Jining, 272067, China.
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7
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Allende LG, Natalí L, Cragnolini AB, Bollo M, Musri MM, de Mendoza D, Martín MG. Lysosomal cholesterol accumulation in aged astrocytes impairs cholesterol delivery to neurons and can be rescued by cannabinoids. Glia 2024; 72:1746-1765. [PMID: 38856177 DOI: 10.1002/glia.24580] [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: 11/29/2023] [Revised: 05/25/2024] [Accepted: 06/02/2024] [Indexed: 06/11/2024]
Abstract
Cholesterol is crucial for the proper functioning of eukaryotic cells, especially neurons, which rely on cholesterol to maintain their complex structure and facilitate synaptic transmission. However, brain cells are isolated from peripheral cholesterol by the blood-brain barrier and mature neurons primarily uptake the cholesterol synthesized by astrocytes for proper function. This study aimed to investigate the effect of aging on cholesterol trafficking in astrocytes and its delivery to neurons. We found that aged astrocytes accumulated high levels of cholesterol in the lysosomal compartment, and this cholesterol buildup can be attributed to the simultaneous occurrence of two events: decreased levels of the ABCA1 transporter, which impairs ApoE-cholesterol export from astrocytes, and reduced expression of NPC1, which hinders cholesterol release from lysosomes. We show that these two events are accompanied by increased microR-33 in aged astrocytes, which targets ABCA1 and NPC1. In addition, we demonstrate that the microR-33 increase is triggered by oxidative stress, one of the hallmarks of aging. By coculture experiments, we show that cholesterol accumulation in astrocytes impairs the cholesterol delivery from astrocytes to neurons. Remarkably, we found that this altered transport of cholesterol could be alleviated through treatment with endocannabinoids as well as cannabidiol or CBD. Finally, according to data demonstrating that aged astrocytes develop an A1 phenotype, we found that cholesterol buildup is also observed in reactive C3+ astrocytes. Given that reduced neuronal cholesterol affects synaptic plasticity, the ability of cannabinoids to restore cholesterol transport from aged astrocytes to neurons holds significant implications in aging and inflammation.
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Affiliation(s)
- Leandro G Allende
- Departamento de Neurobiología Molecular y celular, Instituto Ferreyra, INIMEC-CONICET-UNC, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Lautaro Natalí
- Departamento de Bioquímica y Biofísica, Instituto Ferreyra, INIMEC-CONICET-UNC, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Andrea B Cragnolini
- Instituto de Investigaciones Biológicas y Tecnológicas, CONICET-UNC, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Mariana Bollo
- Departamento de Bioquímica y Biofísica, Instituto Ferreyra, INIMEC-CONICET-UNC, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Melina M Musri
- Departamento de Bioquímica y Biofísica, Instituto Ferreyra, INIMEC-CONICET-UNC, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Diego de Mendoza
- Laboratorio de Fisiología Microbiana, Instituto de Biología Molecular y Celular de Rosario (IBR), CONICET, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina
| | - Mauricio G Martín
- Departamento de Neurobiología Molecular y celular, Instituto Ferreyra, INIMEC-CONICET-UNC, Universidad Nacional de Córdoba, Córdoba, Argentina
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Diniz LP, Morgado J, Bergamo Araujo AP, da Silva Antônio LM, Mota-Araujo HP, de Sena Murteira Pinheiro P, Sagrillo FS, Cesar GV, Ferreira ST, Figueiredo CP, Manssour Fraga CA, Gomes FCA. Histone deacetylase inhibition mitigates cognitive deficits and astrocyte dysfunction induced by amyloid-β (Aβ) oligomers. Br J Pharmacol 2024; 181:4028-4049. [PMID: 38936407 DOI: 10.1111/bph.16439] [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: 11/21/2023] [Revised: 04/25/2024] [Accepted: 04/29/2024] [Indexed: 06/29/2024] Open
Abstract
BACKGROUND AND PURPOSE Inhibitors of histone deacetylases (iHDACs) are promising drugs for neurodegenerative diseases. We have evaluated the therapeutic potential of the new iHDAC LASSBio-1911 in Aβ oligomer (AβO) toxicity models and astrocytes, key players in neuroinflammation and Alzheimer's disease (AD). EXPERIMENTAL APPROACH Astrocyte phenotype and synapse density were evaluated by flow cytometry, Western blotting, immunofluorescence and qPCR, in vitro and in mice. Cognitive function was evaluated by behavioural assays using a mouse model of intracerebroventricular infusion of AβO. KEY RESULTS LASSBio-1911 modulates reactivity and synaptogenic potential of cultured astrocytes and improves synaptic markers in cultured neurons and in mice. It prevents AβO-triggered astrocytic reactivity in mice and enhances the neuroprotective potential of astrocytes. LASSBio-1911 improves behavioural performance and rescues synaptic and memory function in AβO-infused mice. CONCLUSION AND IMPLICATIONS These results contribute to unveiling the mechanisms underlying astrocyte role in AD and provide the rationale for using astrocytes as targets to new drugs for AD.
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Affiliation(s)
- Luan Pereira Diniz
- Laboratório de Neurobiologia Celular, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Juliana Morgado
- Laboratório de Neurobiologia Celular, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ana Paula Bergamo Araujo
- Laboratório de Neurobiologia Celular, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | - Pedro de Sena Murteira Pinheiro
- Laboratório de Avaliação e Síntese de Substâncias Bioativas (LASSBio), Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Fernanda Savacini Sagrillo
- Laboratório de Avaliação e Síntese de Substâncias Bioativas (LASSBio), Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Gabriele Vargas Cesar
- Laboratório de Neurobiologia Celular, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Sérgio T Ferreira
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Carlos Alberto Manssour Fraga
- Laboratório de Avaliação e Síntese de Substâncias Bioativas (LASSBio), Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Flávia Carvalho Alcantara Gomes
- Laboratório de Neurobiologia Celular, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Xie L, Wu Q, Li K, Khan MAS, Zhang A, Sinha B, Li S, Chang SL, Brody DL, Grinstaff MW, Zhou S, Alterovitz G, Liu P, Wang X. Tryptophan Metabolism in Alzheimer's Disease with the Involvement of Microglia and Astrocyte Crosstalk and Gut-Brain Axis. Aging Dis 2024; 15:2168-2190. [PMID: 38916729 PMCID: PMC11346405 DOI: 10.14336/ad.2024.0134] [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: 02/02/2024] [Accepted: 05/03/2024] [Indexed: 06/26/2024] Open
Abstract
Alzheimer's disease (AD) is an age-dependent neurodegenerative disease characterized by extracellular Amyloid Aβ peptide (Aβ) deposition and intracellular Tau protein aggregation. Glia, especially microglia and astrocytes are core participants during the progression of AD and these cells are the mediators of Aβ clearance and degradation. The microbiota-gut-brain axis (MGBA) is a complex interactive network between the gut and brain involved in neurodegeneration. MGBA affects the function of glia in the central nervous system (CNS), and microbial metabolites regulate the communication between astrocytes and microglia; however, whether such communication is part of AD pathophysiology remains unknown. One of the potential links in bilateral gut-brain communication is tryptophan (Trp) metabolism. The microbiota-originated Trp and its metabolites enter the CNS to control microglial activation, and the activated microglia subsequently affect astrocyte functions. The present review highlights the role of MGBA in AD pathology, especially the roles of Trp per se and its metabolism as a part of the gut microbiota and brain communications. We (i) discuss the roles of Trp derivatives in microglia-astrocyte crosstalk from a bioinformatics perspective, (ii) describe the role of glia polarization in the microglia-astrocyte crosstalk and AD pathology, and (iii) summarize the potential of Trp metabolism as a therapeutic target. Finally, we review the role of Trp in AD from the perspective of the gut-brain axis and microglia, as well as astrocyte crosstalk, to inspire the discovery of novel AD therapeutics.
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Affiliation(s)
- Lushuang Xie
- Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA.
- Acupuncture and Moxibustion College, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 610075, China.
| | - Qiaofeng Wu
- Acupuncture and Moxibustion College, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 610075, China.
| | - Kelin Li
- Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA.
- Department of Chemistry, Boston University, Boston, MA 02215, USA.
| | - Mohammed A. S. Khan
- Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA.
| | - Andrew Zhang
- Biomedical Cybernetics Laboratory, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA.
| | - Bharati Sinha
- Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA.
| | - Sihui Li
- Acupuncture and Moxibustion College, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 610075, China.
| | - Sulie L. Chang
- Department of Biological Sciences, Institute of NeuroImmune Pharmacology, Seton Hall University, South Orange, NJ 07079, USA.
| | - David L. Brody
- Department of Neurology, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA.
| | | | - Shuanhu Zhou
- Harvard Medical School, Harvard Stem Cell Institute, Boston, MA 02115, USA.
| | - Gil Alterovitz
- Biomedical Cybernetics Laboratory, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA.
| | - Pinghua Liu
- Department of Chemistry, Boston University, Boston, MA 02215, USA.
| | - Xin Wang
- Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA.
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10
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Groh AMR, Caporicci-Dinucci N, Afanasiev E, Bigotte M, Lu B, Gertsvolf J, Smith MD, Garton T, Callahan-Martin L, Allot A, Hatrock DJ, Mamane V, Drake S, Tai H, Ding J, Fournier AE, Larochelle C, Calabresi PA, Stratton JA. Ependymal cells undergo astrocyte-like reactivity in response to neuroinflammation. J Neurochem 2024; 168:3449-3466. [PMID: 38702968 DOI: 10.1111/jnc.16120] [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: 08/31/2023] [Revised: 04/08/2024] [Accepted: 04/15/2024] [Indexed: 05/06/2024]
Abstract
Ependymal cells form a specialized brain-cerebrospinal fluid (CSF) interface and regulate local CSF microcirculation. It is becoming increasingly recognized that ependymal cells assume a reactive state in response to aging and disease, including conditions involving hypoxia, hydrocephalus, neurodegeneration, and neuroinflammation. Yet what transcriptional signatures govern these reactive states and whether this reactivity shares any similarities with classical descriptions of glial reactivity (i.e., in astrocytes) remain largely unexplored. Using single-cell transcriptomics, we interrogated this phenomenon by directly comparing the reactive ependymal cell transcriptome to the reactive astrocyte transcriptome using a well-established model of autoimmune-mediated neuroinflammation (MOG35-55 EAE). In doing so, we unveiled core glial reactivity-associated genes that defined the reactive ependymal cell and astrocyte response to MOG35-55 EAE. Interestingly, known reactive astrocyte genes from other CNS injury/disease contexts were also up-regulated by MOG35-55 EAE ependymal cells, suggesting that this state may be conserved in response to a variety of pathologies. We were also able to recapitulate features of the reactive ependymal cell state acutely using a classic neuroinflammatory cocktail (IFNγ/LPS) both in vitro and in vivo. Taken together, by comparing reactive ependymal cells and astrocytes, we identified a conserved signature underlying glial reactivity that was present in several neuroinflammatory contexts. Future work will explore the mechanisms driving ependymal reactivity and assess downstream functional consequences.
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Affiliation(s)
- Adam M R Groh
- Department of Neurology and Neurosurgery, Montreal Neurological Institute-Hospital, McGill University, Montréal, Quebec, Canada
| | - Nina Caporicci-Dinucci
- Department of Neurology and Neurosurgery, Montreal Neurological Institute-Hospital, McGill University, Montréal, Quebec, Canada
| | - Elia Afanasiev
- Department of Neurology and Neurosurgery, Montreal Neurological Institute-Hospital, McGill University, Montréal, Quebec, Canada
| | - Maxime Bigotte
- Department of Neurology and Neurosurgery, Montreal Neurological Institute-Hospital, McGill University, Montréal, Quebec, Canada
| | - Brianna Lu
- Department of Neurology and Neurosurgery, Montreal Neurological Institute-Hospital, McGill University, Montréal, Quebec, Canada
| | - Joshua Gertsvolf
- Department of Neurology and Neurosurgery, Montreal Neurological Institute-Hospital, McGill University, Montréal, Quebec, Canada
| | - Matthew D Smith
- Division of Neuroimmunology and Neurological Infections, Department of Neurology, Johns Hopkins Hospital, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Thomas Garton
- Division of Neuroimmunology and Neurological Infections, Department of Neurology, Johns Hopkins Hospital, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Liam Callahan-Martin
- Department of Neurology and Neurosurgery, Montreal Neurological Institute-Hospital, McGill University, Montréal, Quebec, Canada
| | - Alexis Allot
- Department of Neurology and Neurosurgery, Montreal Neurological Institute-Hospital, McGill University, Montréal, Quebec, Canada
| | - Dale J Hatrock
- Department of Neurology and Neurosurgery, Montreal Neurological Institute-Hospital, McGill University, Montréal, Quebec, Canada
| | - Victoria Mamane
- Department of Neuroscience, Faculty of Medicine, Université de Montréal, Montréal, Quebec, Canada
| | - Sienna Drake
- Department of Neurology and Neurosurgery, Montreal Neurological Institute-Hospital, McGill University, Montréal, Quebec, Canada
| | - Huilin Tai
- Meakins-Christie Laboratories, Translational Research in Respiratory Diseases Program, Research Institute of the McGill University Health Centre, Montréal, Quebec, Canada
- Department of Medicine, McGill University Health Centre, Montréal, Quebec, Canada
| | - Jun Ding
- Meakins-Christie Laboratories, Translational Research in Respiratory Diseases Program, Research Institute of the McGill University Health Centre, Montréal, Quebec, Canada
- Department of Medicine, McGill University Health Centre, Montréal, Quebec, Canada
| | - Alyson E Fournier
- Department of Neurology and Neurosurgery, Montreal Neurological Institute-Hospital, McGill University, Montréal, Quebec, Canada
| | - Catherine Larochelle
- Department of Neuroscience, Faculty of Medicine, Université de Montréal, Montréal, Quebec, Canada
| | - Peter A Calabresi
- Division of Neuroimmunology and Neurological Infections, Department of Neurology, Johns Hopkins Hospital, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Jo Anne Stratton
- Department of Neurology and Neurosurgery, Montreal Neurological Institute-Hospital, McGill University, Montréal, Quebec, Canada
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11
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Shaw BC, Anders VR, Tinkey RA, Habean ML, Brock OD, Frostino BJ, Williams JL. Immunity impacts cognitive deficits across neurological disorders. J Neurochem 2024; 168:3512-3535. [PMID: 37899543 PMCID: PMC11056485 DOI: 10.1111/jnc.15999] [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: 08/01/2023] [Revised: 10/06/2023] [Accepted: 10/10/2023] [Indexed: 10/31/2023]
Abstract
Cognitive deficits are a common comorbidity with neurological disorders and normal aging. Inflammation is associated with multiple diseases including classical neurodegenerative dementias such as Alzheimer's disease (AD) and autoimmune disorders such as multiple sclerosis (MS), in which over half of all patients experience some form of cognitive deficits. Other degenerative diseases of the central nervous system (CNS) including frontotemporal lobe dementia (FTLD), and Parkinson's disease (PD) as well as traumatic brain injury (TBI) and psychological disorders like major depressive disorder (MDD), and even normal aging all have cytokine-associated reductions in cognitive function. Thus, there is likely commonality between these secondary cognitive deficits and inflammation. Neurological disorders are increasingly associated with substantial neuroinflammation, in which CNS-resident cells secrete cytokines and chemokines such as tumor necrosis factor (TNF)α and interleukins (ILs) including IL-1β and IL-6. CNS-resident cells also respond to a wide variety of cytokines and chemokines, which can have both direct effects on neurons by changing the expression of ion channels and perturbing electrical properties, as well as indirect effects through glia-glia and immune-glia cross-talk. There is significant overlap in these cytokine and chemokine expression profiles across diseases, with TNFα and IL-6 strongly associated with cognitive deficits in multiple disorders. Here, we review the involvement of various cytokines and chemokines in AD, MS, FTLD, PD, TBI, MDD, and normal aging in the absence of dementia. We propose that the neuropsychiatric phenotypes observed in these disorders may be at least partially attributable to a dysregulation of immunity resulting in pathological cytokine and chemokine expression from both CNS-resident and non-resident cells.
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Affiliation(s)
- Benjamin C. Shaw
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Victoria R. Anders
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Rachel A. Tinkey
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
- School of Biomedical Sciences, Kent State University, Kent, OH, USA
- Brain Health Research Institute, Kent State University, Kent, OH, USA
| | - Maria L. Habean
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
- Department of Neuroscience, Case Western Reserve University, Cleveland, OH, USA
| | - Orion D. Brock
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
- Molecular Medicine, Lerner Research Institute, Cleveland Clinic and Case Western Reserve University, Cleveland, OH, USA
| | - Benjamin J. Frostino
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
- College of Science, University of Notre Dame, South Bend, IN, USA
| | - Jessica L. Williams
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
- School of Biomedical Sciences, Kent State University, Kent, OH, USA
- Brain Health Research Institute, Kent State University, Kent, OH, USA
- Department of Neuroscience, Case Western Reserve University, Cleveland, OH, USA
- Molecular Medicine, Lerner Research Institute, Cleveland Clinic and Case Western Reserve University, Cleveland, OH, USA
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12
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Fisher TM, Liddelow SA. Emerging roles of astrocytes as immune effectors in the central nervous system. Trends Immunol 2024; 45:824-836. [PMID: 39332912 DOI: 10.1016/j.it.2024.08.008] [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: 07/31/2024] [Revised: 08/25/2024] [Accepted: 08/27/2024] [Indexed: 09/29/2024]
Abstract
The astrocyte, a major glial cell type in the central nervous system (CNS), is widely regarded as a functionally diverse mediator of homeostasis. During development and throughout adulthood, astrocytes have essential roles, such as providing neuron metabolic support, modulating synaptic function, and maintaining the blood-brain barrier (BBB). Recent evidence continues to underscore their functional heterogeneity and importance for CNS maintenance, as well as how these cells ensure optimal CNS and immune responses to disease, acute trauma, and infection. Advances in our understanding of neuroimmune interactions complement our knowledge of astrocyte functional heterogeneity, where astrocytes are now regarded as key effectors and propagators of immune signaling. This shift in perspective highlights the role of astrocytes not merely as support cells, but as active participants in CNS immune responses.
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Affiliation(s)
- Theodore M Fisher
- Neuroscience Institute, NYU Grossman School of Medicine, New York, NY, USA.
| | - Shane A Liddelow
- Neuroscience Institute, NYU Grossman School of Medicine, New York, NY, USA; Department of Neuroscience and Physiology, NYU Grossman School of Medicine, New York, NY, USA; Department of Ophthalmology, NYU Grossman School of Medicine, New York, NY, USA; Parekh Center for Interdisciplinary Neurology, NYU Grossman School of Medicine, New York, NY, USA.
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13
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Lei SY, Qu Y, Yang YQ, Liu JC, Zhang YF, Zhou SY, He QY, Jin H, Yang Y, Guo ZN. Cellular senescence: A novel therapeutic target for central nervous system diseases. Biomed Pharmacother 2024; 179:117311. [PMID: 39182322 DOI: 10.1016/j.biopha.2024.117311] [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: 05/27/2024] [Revised: 08/05/2024] [Accepted: 08/13/2024] [Indexed: 08/27/2024] Open
Abstract
The underlying mechanisms of diseases affecting the central nervous system (CNS) remain unclear, limiting the development of effective therapeutic strategies. Remarkably, cellular senescence, a biological phenomenon observed in cultured fibroblasts in vitro, is a crucial intrinsic mechanism that influences homeostasis of the brain microenvironment and contributes to the onset and progression of CNS diseases. Cellular senescence has been observed in disease models established in vitro and in vivo and in bodily fluids or tissue components from patients with CNS diseases. These findings highlight cellular senescence as a promising target for preventing and treating CNS diseases. Consequently, emerging novel therapies targeting senescent cells have exhibited promising therapeutic effects in preclinical and clinical studies on aging-related diseases. These innovative therapies can potentially delay brain cell loss and functional changes, improve the prognosis of CNS diseases, and provide alternative treatments for patients. In this study, we examined the relevant advancements in this field, particularly focusing on the targeting of senescent cells in the brain for the treatment of chronic neurodegenerative diseases (e.g., Alzheimer's disease, Parkinson's disease, and multiple sclerosis) and acute neurotraumatic insults (e.g., ischemic stroke, spinal cord injury, and traumatic brain injury).
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Affiliation(s)
- Shuang-Yin Lei
- Stroke Center, Department of Neurology, the First Hospital of Jilin University, Changchun 130021, China
| | - Yang Qu
- Stroke Center, Department of Neurology, the First Hospital of Jilin University, Changchun 130021, China
| | - Yu-Qian Yang
- Stroke Center, Department of Neurology, the First Hospital of Jilin University, Changchun 130021, China
| | - Jia-Cheng Liu
- Stroke Center, Department of Neurology, the First Hospital of Jilin University, Changchun 130021, China
| | - Yi-Fei Zhang
- Stroke Center, Department of Neurology, the First Hospital of Jilin University, Changchun 130021, China
| | - Sheng-Yu Zhou
- Stroke Center, Department of Neurology, the First Hospital of Jilin University, Changchun 130021, China
| | - Qian-Yan He
- Stroke Center, Department of Neurology, the First Hospital of Jilin University, Changchun 130021, China
| | - Hang Jin
- Stroke Center, Department of Neurology, the First Hospital of Jilin University, Changchun 130021, China.
| | - Yi Yang
- Stroke Center, Department of Neurology, the First Hospital of Jilin University, Changchun 130021, China.
| | - Zhen-Ni Guo
- Stroke Center, Department of Neurology, the First Hospital of Jilin University, Changchun 130021, China; Neuroscience Research Center, Department of Neurology, the First Hospital of Jilin University, Changchun 130021, China.
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14
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Baraibar AM, Colomer T, Moreno-García A, Bernal-Chico A, Sánchez-Martín E, Utrilla C, Serrat R, Soria-Gómez E, Rodríguez-Antigüedad A, Araque A, Matute C, Marsicano G, Mato S. Autoimmune inflammation triggers aberrant astrocytic calcium signaling to impair synaptic plasticity. Brain Behav Immun 2024; 121:192-210. [PMID: 39032542 PMCID: PMC11415231 DOI: 10.1016/j.bbi.2024.07.010] [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: 02/20/2024] [Revised: 07/12/2024] [Accepted: 07/15/2024] [Indexed: 07/23/2024] Open
Abstract
Cortical pathology involving inflammatory and neurodegenerative mechanisms is a hallmark of multiple sclerosis and a correlate of disease progression and cognitive decline. Astrocytes play a pivotal role in multiple sclerosis initiation and progression but astrocyte-neuronal network alterations contributing to gray matter pathology remain undefined. Here we unveil deregulation of astrocytic calcium signaling and astrocyte-to-neuron communication as key pathophysiological mechanisms of cortical dysfunction in the experimental autoimmune encephalomyelitis (EAE) model of multiple sclerosis. Using two-photon imaging ex vivo and fiber photometry in freely behaving mice, we found that acute EAE was associated with the emergence of spontaneously hyperactive cortical astrocytes exhibiting dysfunctional responses to cannabinoid, glutamate and purinoreceptor agonists. Abnormal astrocyte signaling by Gi and Gq protein coupled receptors was observed in the inflamed cortex. This was mirrored by treatments with pro-inflammatory factors both in vitro and ex vivo, suggesting cell-autonomous effects of the cortical neuroinflammatory environment. Finally, deregulated astrocyte calcium activity was associated with an enhancement of glutamatergic gliotransmission and a shift of astrocyte-mediated short-term and long-term plasticity mechanisms towards synaptic potentiation. Overall, our data identify astrocyte-neuronal network dysfunctions as key pathological features of gray matter inflammation in multiple sclerosis and potentially additional neuroimmunological disorders.
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Affiliation(s)
- A M Baraibar
- Department of Neurosciences, University of the Basque Country UPV/EHU, 48940 Leioa, Spain; Achucarro Basque Center for Neuroscience, 48940 Leioa, Spain; Neuroinmunology Group, Biobizkaia Health Research Institute, 48903 Barakaldo, Spain; Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28029 Madrid, Spain
| | - T Colomer
- Department of Neurosciences, University of the Basque Country UPV/EHU, 48940 Leioa, Spain; Achucarro Basque Center for Neuroscience, 48940 Leioa, Spain; Neuroinmunology Group, Biobizkaia Health Research Institute, 48903 Barakaldo, Spain
| | - A Moreno-García
- Department of Neurosciences, University of the Basque Country UPV/EHU, 48940 Leioa, Spain; Achucarro Basque Center for Neuroscience, 48940 Leioa, Spain; Neuroinmunology Group, Biobizkaia Health Research Institute, 48903 Barakaldo, Spain
| | - A Bernal-Chico
- Department of Neurosciences, University of the Basque Country UPV/EHU, 48940 Leioa, Spain; Achucarro Basque Center for Neuroscience, 48940 Leioa, Spain; Neuroinmunology Group, Biobizkaia Health Research Institute, 48903 Barakaldo, Spain
| | - E Sánchez-Martín
- Department of Neurosciences, University of the Basque Country UPV/EHU, 48940 Leioa, Spain; Achucarro Basque Center for Neuroscience, 48940 Leioa, Spain; Neuroinmunology Group, Biobizkaia Health Research Institute, 48903 Barakaldo, Spain
| | - C Utrilla
- Department of Neurosciences, University of the Basque Country UPV/EHU, 48940 Leioa, Spain; Achucarro Basque Center for Neuroscience, 48940 Leioa, Spain; Neuroinmunology Group, Biobizkaia Health Research Institute, 48903 Barakaldo, Spain
| | - R Serrat
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1215 NeuroCentre Magendie, 33077 Bordeaux, France; University of Bordeaux, 33077 Bordeaux, France
| | - E Soria-Gómez
- Department of Neurosciences, University of the Basque Country UPV/EHU, 48940 Leioa, Spain; Achucarro Basque Center for Neuroscience, 48940 Leioa, Spain
| | - A Rodríguez-Antigüedad
- Department of Neurosciences, University of the Basque Country UPV/EHU, 48940 Leioa, Spain; Neuroinmunology Group, Biobizkaia Health Research Institute, 48903 Barakaldo, Spain
| | - A Araque
- Department of Neuroscience, University of Minnesota, Minneapolis, 55455 MN, USA
| | - C Matute
- Department of Neurosciences, University of the Basque Country UPV/EHU, 48940 Leioa, Spain; Achucarro Basque Center for Neuroscience, 48940 Leioa, Spain; Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28029 Madrid, Spain
| | - G Marsicano
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1215 NeuroCentre Magendie, 33077 Bordeaux, France; University of Bordeaux, 33077 Bordeaux, France.
| | - S Mato
- Department of Neurosciences, University of the Basque Country UPV/EHU, 48940 Leioa, Spain; Achucarro Basque Center for Neuroscience, 48940 Leioa, Spain; Neuroinmunology Group, Biobizkaia Health Research Institute, 48903 Barakaldo, Spain.
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15
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DeVries SA, Dimovasili C, Medalla M, Moore TL, Rosene DL. Dysregulated C1q and CD47 in the aging monkey brain: association with myelin damage, microglia reactivity, and cognitive decline. Front Immunol 2024; 15:1426975. [PMID: 39399501 PMCID: PMC11466761 DOI: 10.3389/fimmu.2024.1426975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Accepted: 08/28/2024] [Indexed: 10/15/2024] Open
Abstract
Normal aging, though lacking widespread neurodegeneration, is nevertheless characterized by cognitive impairment in learning, memory, and executive function. The aged brain is spared from neuron loss, but white matter is lost and damage to myelin sheaths accumulates. This myelin damage is strongly associated with cognitive impairment. Although the cause of the myelin damage is not known, microglia dysregulation is a likely contributor. Immunologic proteins interact with microglial receptors to modulate microglia-mediated phagocytosis, which mediates myelin damage clearance and turn-over. Two such proteins, "eat me" signal C1q and "don't eat me" signal CD47, act in opposition with microglia. Both C1q and CD47 have been implicated in Multiple Sclerosis, a demyelinating disease, but whether they play a role in age-related myelin pathology is currently unknown. The present study investigates C1q and CD47 in relation to age-related myelin degeneration using multilabel immunofluorescence, RNAscope, and confocal microscopy in the cingulum bundle of male and female rhesus monkeys across the lifespan. Our findings showed significant age-related elevation in C1q localized to myelin basic protein, and this increase is associated with more severe cognitive impairment. In contrast, CD47 localization to myelin decreased in middle age and oligodendrocyte expression of CD47 RNA decreased with age. Lastly, microglia reactivity increased with age in association with the changes in C1q and CD47. Together, these results suggest disruption in the balance of "eat me" and "don't eat me" signals during normal aging, biasing microglia toward increased reactivity and phagocytosis of myelin, resulting in cognitive deficits.
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Affiliation(s)
- Sarah A. DeVries
- Laboratory for Cognitive Neurobiology, Dept of Anatomy & Neurobiology, Chobanian and Avedisian School of Medicine, Boston University, Boston, MA, United States
| | - Christina Dimovasili
- Laboratory for Cognitive Neurobiology, Dept of Anatomy & Neurobiology, Chobanian and Avedisian School of Medicine, Boston University, Boston, MA, United States
| | - Maria Medalla
- Laboratory of Neural Circuits and Ultrastructure, Dept of Anatomy & Neurobiology, Chobanian and Avedisian School of Medicine, Boston University, Boston, MA, United States
- Center for Systems Neuroscience, Boston University, Boston, MA, United States
| | - Tara L. Moore
- Center for Systems Neuroscience, Boston University, Boston, MA, United States
- Laboratory of Interventions for Cortical Injury and Cognitive Decline, Dept of Anatomy & Neurobiology, Chobanian and Avedisian School of Medicine, Boston University, Boston, MA, United States
| | - Douglas L. Rosene
- Laboratory for Cognitive Neurobiology, Dept of Anatomy & Neurobiology, Chobanian and Avedisian School of Medicine, Boston University, Boston, MA, United States
- Center for Systems Neuroscience, Boston University, Boston, MA, United States
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16
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Malovic E, Ealy A, Miller C, Jang A, Hsu PJ, Sarkar S, Rokad D, Goeser C, Hartman AK, Zhu A, Palanisamy B, Zenitsky G, Jin H, Anantharam V, Kanthasamy A, He C, Kanthasamy AG. Epitranscriptomic reader YTHDF2 regulates SEK1( MAP2K4)-JNK-cJUN inflammatory signaling in astrocytes during neurotoxic stress. iScience 2024; 27:110619. [PMID: 39252959 PMCID: PMC11382029 DOI: 10.1016/j.isci.2024.110619] [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: 02/12/2024] [Revised: 06/13/2024] [Accepted: 07/26/2024] [Indexed: 09/11/2024] Open
Abstract
As the most abundant glial cells in the central nervous system (CNS), astrocytes dynamically respond to neurotoxic stress, however, the key molecular regulators controlling the inflammatory status of these sentinels during neurotoxic stress are many and complex. Herein, we demonstrate that the m6A epitranscriptomic mRNA modification tightly regulates the pro-inflammatory functions of astrocytes. Specifically, the astrocytic neurotoxic stressor, manganese (Mn), downregulated the m6A reader YTHDF2 in human and mouse astrocyte cultures and in the mouse brain. Functionally, YTHDF2 knockdown augmented, while its overexpression dampened, the neurotoxic stress-induced proinflammatory response, suggesting YTHDF2 serves as a key upstream regulator of inflammatory responses in astrocytes. Mechanistically, YTHDF2 RIP-sequencing identified MAP2K4 (MKK4; SEK1) mRNA as a YTHDF2 target influencing inflammatory signaling. Our target validation revealed that Mn-exposed astrocytes mediate proinflammatory responses by activating the phosphorylation of SEK1, JNK, and cJUN signaling. Collectively, YTHDF2 serves as a key upstream 'molecular switch' controlling SEK1(MAP2K4)-JNK-cJUN proinflammatory signaling in astrocytes.
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Affiliation(s)
- Emir Malovic
- Parkinson's Disorder Research Laboratory, Department of Biomedical Sciences, Iowa State University, Ames, IA, USA
| | - Alyssa Ealy
- Isakson Center for Neurological Disease Research, University of Georgia, Athens, GA, USA
- Department of Physiology and Pharmacology, University of Georgia, Athens, GA, USA
| | - Cameron Miller
- Isakson Center for Neurological Disease Research, University of Georgia, Athens, GA, USA
- Department of Physiology and Pharmacology, University of Georgia, Athens, GA, USA
| | - Ahyoung Jang
- Isakson Center for Neurological Disease Research, University of Georgia, Athens, GA, USA
- Department of Physiology and Pharmacology, University of Georgia, Athens, GA, USA
| | - Phillip J Hsu
- Department of Chemistry, University of Chicago, Chicago, IL, USA
| | - Souvarish Sarkar
- Parkinson's Disorder Research Laboratory, Department of Biomedical Sciences, Iowa State University, Ames, IA, USA
| | - Dharmin Rokad
- Parkinson's Disorder Research Laboratory, Department of Biomedical Sciences, Iowa State University, Ames, IA, USA
| | - Cody Goeser
- Parkinson's Disorder Research Laboratory, Department of Biomedical Sciences, Iowa State University, Ames, IA, USA
| | - Aleah Kristen Hartman
- Parkinson's Disorder Research Laboratory, Department of Biomedical Sciences, Iowa State University, Ames, IA, USA
| | - Allen Zhu
- Department of Chemistry, University of Chicago, Chicago, IL, USA
| | - Bharathi Palanisamy
- Parkinson's Disorder Research Laboratory, Department of Biomedical Sciences, Iowa State University, Ames, IA, USA
| | - Gary Zenitsky
- Isakson Center for Neurological Disease Research, University of Georgia, Athens, GA, USA
- Department of Physiology and Pharmacology, University of Georgia, Athens, GA, USA
| | - Huajun Jin
- Isakson Center for Neurological Disease Research, University of Georgia, Athens, GA, USA
- Department of Physiology and Pharmacology, University of Georgia, Athens, GA, USA
| | - Vellareddy Anantharam
- Isakson Center for Neurological Disease Research, University of Georgia, Athens, GA, USA
- Department of Physiology and Pharmacology, University of Georgia, Athens, GA, USA
| | - Arthi Kanthasamy
- Parkinson's Disorder Research Laboratory, Department of Biomedical Sciences, Iowa State University, Ames, IA, USA
- Isakson Center for Neurological Disease Research, University of Georgia, Athens, GA, USA
- Department of Physiology and Pharmacology, University of Georgia, Athens, GA, USA
| | - Chuan He
- Department of Chemistry, University of Chicago, Chicago, IL, USA
| | - Anumantha G Kanthasamy
- Parkinson's Disorder Research Laboratory, Department of Biomedical Sciences, Iowa State University, Ames, IA, USA
- Isakson Center for Neurological Disease Research, University of Georgia, Athens, GA, USA
- Department of Physiology and Pharmacology, University of Georgia, Athens, GA, USA
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA, USA
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17
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McCray TJ, Bedford LM, Bissel SJ, Lamb BT. Trem2-deficiency aggravates and accelerates age-related myelin degeneration. Acta Neuropathol Commun 2024; 12:154. [PMID: 39300502 PMCID: PMC11411802 DOI: 10.1186/s40478-024-01855-3] [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: 07/11/2024] [Accepted: 08/02/2024] [Indexed: 09/22/2024] Open
Abstract
Aging is the greatest known risk factor for most neurodegenerative diseases. Myelin degeneration is an early pathological indicator of these diseases and a normal part of aging; albeit, to a lesser extent. Despite this, little is known about the contribution of age-related myelin degeneration on neurodegenerative disease. Microglia participate in modulating white matter events from demyelination to remyelination, including regulation of (de)myelination by the microglial innate immune receptor triggering receptor expressed on myeloid cells 2 (TREM2). Here, we demonstrate Trem2-deficiency aggravates and accelerates age-related myelin degeneration in the striatum. We show TREM2 is necessary for remyelination by recruiting reparative glia and mediating signaling that promotes OPC differentiation/maturation. In response to demyelination, TREM2 is required for phagocytosis of large volumes of myelin debris. In addition to lysosomal regulation, we show TREM2 can modify the ER stress response, even prior to overt myelin debris, that prevents lipid accumulation and microglial dysfunction. These data support a role for Trem2-dependent interactions in age-related myelin degeneration and suggest a basis for how early dysfunctional microglia could contribute to disease pathology through insufficent repair, defective phagocytosis, and the ER stress response.
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Affiliation(s)
- Tyler J McCray
- Stark Neurosciences Research Institute, Indiana University, School of Medicine, Indianapolis, IN 46202, USA
| | - Logan M Bedford
- Stark Neurosciences Research Institute, Indiana University, School of Medicine, Indianapolis, IN 46202, USA
| | - Stephanie J Bissel
- Stark Neurosciences Research Institute, Indiana University, School of Medicine, Indianapolis, IN 46202, USA
- Department of Medical and Molecular Genetics, Indiana University, School of Medicine, Indianapolis, IN 46202, USA
| | - Bruce T Lamb
- Stark Neurosciences Research Institute, Indiana University, School of Medicine, Indianapolis, IN 46202, USA.
- Department of Medical and Molecular Genetics, Indiana University, School of Medicine, Indianapolis, IN 46202, USA.
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18
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Xu W, Guo Y, Zhao L, Fu R, Qin X, Zhang Y, Cheng X, Xu S. The Aging Immune System: A Critical Attack on Ischemic Stroke. Mol Neurobiol 2024:10.1007/s12035-024-04464-2. [PMID: 39271626 DOI: 10.1007/s12035-024-04464-2] [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: 11/03/2023] [Accepted: 08/29/2024] [Indexed: 09/15/2024]
Abstract
Ischemic stroke caused by cerebrovascular embolism is an age-related disease with high rates of disability and mortality. Although the mechanisms of immune and inflammatory development after stroke have been of great interest, most studies have neglected the critical and unavoidable factor of age. As the global aging trend intensifies, the number of stroke patients is constantly increasing, emphasizing the urgency of finding effective measures to address the needs of elderly stroke patients. The concept of "immunosenescence" appears to explain the worse stroke outcomes in older individuals. Immune remodeling due to aging involves dynamic changes at all levels of the immune system, and the overall consequences of central (brain-resident) and peripheral (non-brain-resident) immune cells in stroke vary according to the age of the individual. Lastly, the review outlines recent strategies aimed at immunosenescence to improve stroke prognosis.
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Affiliation(s)
- Wenzhe Xu
- Medical Experiment Center, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin, China
- Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yuying Guo
- Medical Experiment Center, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin, China
| | - Linna Zhao
- Medical Experiment Center, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin, China
| | - Rong Fu
- Medical Experiment Center, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin, China
- Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xiaoli Qin
- Medical Experiment Center, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin, China
- Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yunsha Zhang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xueqi Cheng
- Medical Experiment Center, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin, China
- Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Shixin Xu
- Medical Experiment Center, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.
- Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin, China.
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19
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Talley S, Nguyen T, Van Ye L, Valiauga R, DeCarlo J, Mustafa J, Cook B, White FA, Campbell EM. Characterization of age-associated inflammasome activation reveals tissue specific differences in transcriptional and post-translational inflammatory responses. Immun Ageing 2024; 21:60. [PMID: 39256821 PMCID: PMC11384696 DOI: 10.1186/s12979-024-00462-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Accepted: 08/15/2024] [Indexed: 09/12/2024]
Abstract
Aging is associated with systemic chronic, low-grade inflammation, termed 'inflammaging'. This pattern of inflammation is multifactorial and is driven by numerous inflammatory pathways, including the inflammasome. However, most studies to date have examined changes in the transcriptomes that are associated with aging and inflammaging, despite the fact that inflammasome activation is driven by a series of post-translational activation steps, culminating in the cleavage and activation of caspase-1. Here, we utilized transgenic mice expressing a caspase-1 biosensor to examine age-associated inflammasome activation in various organs and tissues to define these post-translational manifestations of inflammaging. Consistent with other studies, we observe increased inflammation, including inflammasome activation, in aged mice and specific tissues. However, we note that the degree of inflammasome activation is not uniformly associated with transcriptional changes commonly used as a surrogate for inflammasome activation in tissues. Furthermore, we used a skull thinning technique to monitor central nervous system inflammasome activation in vivo in aged mice and found that neuroinflammation is significantly amplified in aged mice in response to endotoxin challenge. Together, these data reveal that inflammaging is associated with both transcriptional and post-translational inflammatory pathways that are not uniform between tissues and establish new methodologies for measuring age-associated inflammasome activation in vivo and ex vivo.
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Affiliation(s)
- Sarah Talley
- Department of Microbiology and Immunology, Loyola University Chicago, Maywood, IL, USA
| | - Tyler Nguyen
- Department of Anesthesia, Indiana University School of Medicine, Indianapolis, IN, USA
- Richard L. Roudebush VA Medical Center, Indianapolis, IN, USA
| | - Lily Van Ye
- Department of Microbiology and Immunology, Loyola University Chicago, Maywood, IL, USA
| | - Rasa Valiauga
- Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
| | - Jake DeCarlo
- Department of Microbiology and Immunology, Loyola University Chicago, Maywood, IL, USA
| | - Jabra Mustafa
- Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
| | - Benjamin Cook
- Department of Microbiology and Immunology, Loyola University Chicago, Maywood, IL, USA
| | - Fletcher A White
- Department of Anesthesia, Indiana University School of Medicine, Indianapolis, IN, USA
- Richard L. Roudebush VA Medical Center, Indianapolis, IN, USA
| | - Edward M Campbell
- Department of Microbiology and Immunology, Loyola University Chicago, Maywood, IL, USA.
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20
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D'Egidio F, Castelli V, d'Angelo M, Ammannito F, Quintiliani M, Cimini A. Brain incoming call from glia during neuroinflammation: Roles of extracellular vesicles. Neurobiol Dis 2024; 201:106663. [PMID: 39251030 DOI: 10.1016/j.nbd.2024.106663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2024] [Revised: 09/04/2024] [Accepted: 09/06/2024] [Indexed: 09/11/2024] Open
Abstract
The functionality of the central nervous system (CNS) relies on the connection, integration, and the exchange of information among neural cells. The crosstalk among glial cells and neurons is pivotal for a series of neural functions, such as development of the nervous system, electric conduction, synaptic transmission, neural circuit establishment, and brain homeostasis. Glial cells are crucial players in the maintenance of brain functionality in physiological and disease conditions. Neuroinflammation is a common pathological process in various brain disorders, such as neurodegenerative diseases, and infections. Glial cells, including astrocytes, microglia, and oligodendrocytes, are the main mediators of neuroinflammation, as they can sense and respond to brain insults by releasing pro-inflammatory or anti-inflammatory factors. Recent evidence indicates that extracellular vesicles (EVs) are pivotal players in the intercellular communication that underlies physiological and pathological processes. In particular, glia-derived EVs play relevant roles in modulating neuroinflammation, either by promoting or inhibiting the activation of glial cells and neurons, or by facilitating the clearance or propagation of pathogenic proteins. The involvement of EVs in neurodegenerative diseases such as Alzheimer's Disease (AD), Parkinson's Disease (PD), Huntington's Disease (HD), and Multiple Sclerosis (MS)- which share hallmarks such as neuroinflammation and oxidative stress to DNA damage, alterations in neurotrophin levels, mitochondrial impairment, and altered protein dynamics- will be dissected, showing how EVs act as pivotal cell-cell mediators of toxic stimuli, thereby propagating degeneration and cell death signaling. Thus, this review focuses on the EVs secreted by microglia, astrocytes, oligodendrocytes and in neuroinflammatory conditions, emphasizing on their effects on neurons and on central nervous system functions, considering both their beneficial and detrimental effects.
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Affiliation(s)
- Francesco D'Egidio
- Department of Life, Health and Environmental Sciences, University of L'Aquila, Italy 67100, Via Vetoio - Coppito1, Building "Renato Ricamo"
| | - Vanessa Castelli
- Department of Life, Health and Environmental Sciences, University of L'Aquila, Italy 67100, Via Vetoio - Coppito1, Building "Renato Ricamo"
| | - Michele d'Angelo
- Department of Life, Health and Environmental Sciences, University of L'Aquila, Italy 67100, Via Vetoio - Coppito1, Building "Renato Ricamo".
| | - Fabrizio Ammannito
- Department of Life, Health and Environmental Sciences, University of L'Aquila, Italy 67100, Via Vetoio - Coppito1, Building "Renato Ricamo"
| | - Massimiliano Quintiliani
- Department of Life, Health and Environmental Sciences, University of L'Aquila, Italy 67100, Via Vetoio - Coppito1, Building "Renato Ricamo"
| | - Annamaria Cimini
- Department of Life, Health and Environmental Sciences, University of L'Aquila, Italy 67100, Via Vetoio - Coppito1, Building "Renato Ricamo"
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21
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Krsek A, Ostojic L, Zivalj D, Baticic L. Navigating the Neuroimmunomodulation Frontier: Pioneering Approaches and Promising Horizons-A Comprehensive Review. Int J Mol Sci 2024; 25:9695. [PMID: 39273641 PMCID: PMC11396210 DOI: 10.3390/ijms25179695] [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: 07/31/2024] [Revised: 08/30/2024] [Accepted: 09/03/2024] [Indexed: 09/15/2024] Open
Abstract
The research in neuroimmunomodulation aims to shed light on the complex relationships that exist between the immune and neurological systems and how they affect the human body. This multidisciplinary field focuses on the way immune responses are influenced by brain activity and how neural function is impacted by immunological signaling. This provides important insights into a range of medical disorders. Targeting both brain and immunological pathways, neuroimmunomodulatory approaches are used in clinical pain management to address chronic pain. Pharmacological therapies aim to modulate neuroimmune interactions and reduce inflammation. Furthermore, bioelectronic techniques like vagus nerve stimulation offer non-invasive control of these systems, while neuromodulation techniques like transcranial magnetic stimulation modify immunological and neuronal responses to reduce pain. Within the context of aging, neuroimmunomodulation analyzes the ways in which immunological and neurological alterations brought on by aging contribute to cognitive decline and neurodegenerative illnesses. Restoring neuroimmune homeostasis through strategies shows promise in reducing age-related cognitive decline. Research into mood disorders focuses on how immunological dysregulation relates to illnesses including anxiety and depression. Immune system fluctuations are increasingly recognized for their impact on brain function, leading to novel treatments that target these interactions. This review emphasizes how interdisciplinary cooperation and continuous research are necessary to better understand the complex relationship between the neurological and immune systems.
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Affiliation(s)
- Antea Krsek
- Faculty of Medicine, University of Rijeka, 51000 Rijeka, Croatia
| | - Leona Ostojic
- Faculty of Medicine, University of Rijeka, 51000 Rijeka, Croatia
| | - Dorotea Zivalj
- Faculty of Medicine, University of Rijeka, 51000 Rijeka, Croatia
| | - Lara Baticic
- Department of Medical Chemistry, Biochemistry and Clinical Chemistry, Faculty of Medicine, University of Rijeka, 51000 Rijeka, Croatia
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22
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Vicidomini C, Goode TD, McAvoy KM, Yu R, Beveridge CH, Iyer SN, Victor MB, Leary N, Evans L, Steinbaugh MJ, Lai ZW, Lyon MC, Silvestre MRFS, Bonilla G, Sadreyev RI, Walther TC, Sui SH, Saido T, Yamamoto K, Murakami M, Tsai LH, Chopra G, Sahay A. An aging-sensitive compensatory secretory phospholipase that confers neuroprotection and cognitive resilience. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.07.26.605338. [PMID: 39211220 PMCID: PMC11361190 DOI: 10.1101/2024.07.26.605338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
Breakdown of lipid homeostasis is thought to contribute to pathological aging, the largest risk factor for neurodegenerative disorders such as Alzheimer's Disease (AD). Cognitive reserve theory posits a role for compensatory mechanisms in the aging brain in preserving neuronal circuit functions, staving off cognitive decline, and mitigating risk for AD. However, the identities of such mechanisms have remained elusive. A screen for hippocampal dentate granule cell (DGC) synapse loss-induced factors identified a secreted phospholipase, Pla2g2f, whose expression increases in DGCs during aging. Pla2g2f deletion in DGCs exacerbates aging-associated pathophysiological changes including synapse loss, inflammatory microglia, reactive astrogliosis, impaired neurogenesis, lipid dysregulation and hippocampal-dependent memory loss. Conversely, boosting Pla2g2f in DGCs during aging is sufficient to preserve synapses, reduce inflammatory microglia and reactive gliosis, prevent hippocampal-dependent memory impairment and modify trajectory of cognitive decline. Ex vivo, neuronal-PLA2G2F mediates intercellular signaling to decrease lipid droplet burden in microglia. Boosting Pla2g2f expression in DGCs of an aging-sensitive AD model reduces amyloid load and improves memory. Our findings implicate PLA2G2F as a compensatory neuroprotective factor that maintains lipid homeostasis to counteract aging-associated cognitive decline.
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Affiliation(s)
- Cinzia Vicidomini
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Stem Cell Institute, Cambridge, Massachusetts, USA
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- BROAD Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Travis D Goode
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Stem Cell Institute, Cambridge, Massachusetts, USA
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- BROAD Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Kathleen M McAvoy
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Stem Cell Institute, Cambridge, Massachusetts, USA
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- BROAD Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Ruilin Yu
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
| | - Conor H Beveridge
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
| | - Sanjay N Iyer
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
| | - Matheus B Victor
- Picower Institute for Learning and Memory, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
- Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Noelle Leary
- Picower Institute for Learning and Memory, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
- Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Liam Evans
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Stem Cell Institute, Cambridge, Massachusetts, USA
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- BROAD Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Michael J Steinbaugh
- Harvard Chan Bioinformatics Core, Harvard School of Public Health, Harvard University, Boston, Massachusetts, USA
| | - Zon Weng Lai
- Harvard Chan Advanced Multi-omics Platform, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
- Department of Molecular Metabolism, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
- Department of Cell Biology, Harvard Medical School, Boston, Massachusetts, USA
| | - Marina C Lyon
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Stem Cell Institute, Cambridge, Massachusetts, USA
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- BROAD Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Manuel Rico F S Silvestre
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Stem Cell Institute, Cambridge, Massachusetts, USA
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- BROAD Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Gracia Bonilla
- Department of Molecular Biology. Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Ruslan I Sadreyev
- Department of Molecular Biology. Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Tobias C Walther
- Harvard Chan Advanced Multi-omics Platform, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
- Department of Cell Biology, Harvard Medical School, Boston, Massachusetts, USA
- Howard Hughes Medical Institute, Boston, Massachusetts, USA
| | - Shannan Ho Sui
- Harvard Chan Bioinformatics Core, Harvard School of Public Health, Harvard University, Boston, Massachusetts, USA
| | - Takaomi Saido
- Laboratory for Proteolytic Neuroscience, RIKEN Center for Brain Science, Saitama 351-0198 Japan
| | - Kei Yamamoto
- Graduate School of Technology, Industrial and Social Sciences, Tokushima University, 2-1 Minami-jyosanjima, Tokushima 770-8513, Japan
| | - Makoto Murakami
- Laboratory of Microenvironmental and Metabolic Health Sciences, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Li-Huei Tsai
- BROAD Institute of MIT and Harvard, Cambridge, Massachusetts, USA
- Picower Institute for Learning and Memory, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
- Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Gaurav Chopra
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
- Purdue Institute for Integrative Neuroscience, Purdue University, West Lafayette, IN 47907, USA
- Purdue Institute for Drug Discovery, Purdue University, West Lafayette, IN 47907, USA
- Purdue Center for Cancer Research, Purdue University, West Lafayette, IN 47907, USA
- Regenstrief Center for Healthcare Engineering, Purdue University, West Lafayette, IN 47907, USA
| | - Amar Sahay
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Stem Cell Institute, Cambridge, Massachusetts, USA
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- BROAD Institute of MIT and Harvard, Cambridge, Massachusetts, USA
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23
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Akter KA, Sharma S, Sifat AE, Zhang Y, Patel DK, Cucullo L, Abbruscato TJ. Metformin ameliorates neuroinflammatory environment for neurons and astrocytes during in vitro and in vivo stroke and tobacco smoke chemical exposure: Role of Nrf2 activation. Redox Biol 2024; 75:103266. [PMID: 39094400 PMCID: PMC11345405 DOI: 10.1016/j.redox.2024.103266] [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: 05/22/2024] [Revised: 06/26/2024] [Accepted: 07/06/2024] [Indexed: 08/04/2024] Open
Abstract
Despite the protective nature of the blood-brain barrier (BBB) and brain-protecting tissues, some types of CNS injury or stress can cause cerebral cytokine production and profound alterations in brain function. Neuroinflammation, which can also be accompanied by increased cerebral cytokine production, has a remarkable impact on the pathogenesis of many neurological illnesses, including loss of BBB integrity and ischemic stroke, yet effective treatment choices for these diseases are currently lacking. Although little is known about the brain effects of Metformin (MF), a commonly prescribed first-line antidiabetic drug, prior research suggested that it may be useful in preventing BBB deterioration and the increased risk of stroke caused by tobacco smoking (TS). Therefore, reducing neuroinflammation by escalating anti-inflammatory cytokine production and declining pro-inflammatory cytokine production could prove an effective therapeutic strategy for ischemic stroke. Hence, the current investigation was planned to explore the potential role of MF against stroke and TS-induced neuroinflammation and reactive oxygen species (ROS) production. Our studies revealed that MF suppressed releasing pro-inflammatory mediators like tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) by aiming at the nuclear factor kappa B (NF-κB) signaling pathway in primary neurons and astrocytes. MF also upregulated anti-inflammatory mediators, like interleukin-10 (IL-10), and interleukin-4 (IL-4), by upregulating the Nrf2-ARE signaling pathway. Adolescent mice receiving MF along with TS exposure also showed a notable decrease in NF-κB expression compared to the mice not treated with MF and significantly decreased the level of TNF-α, IL-1β, MCP-1, and MIP-2 and increased the levels of IL-10 and IL-4 through the activation of Nrf2-ARE signaling pathway. These results suggest that MF has anti-neuroinflammatory effects via inhibiting NF-κB signaling by activating Nrf2-ARE. These studies support that MF could be a strong candidate drug for treating and or preventing TS-induced neuroinflammation and ischemic stroke.
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Affiliation(s)
- Khondker Ayesha Akter
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, United States.
| | - Sejal Sharma
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, United States.
| | - Ali Ehsan Sifat
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, United States.
| | - Yong Zhang
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, United States.
| | - Dhaval Kumar Patel
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, United States.
| | - Luca Cucullo
- Department of Foundation Medical Studies, Oakland University William Beaumont School of Medicine, Rochester, MI, United States.
| | - Thomas J Abbruscato
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, United States.
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24
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Vázquez-Lizarraga R, Mendoza-Viveros L, Cid-Castro C, Ruiz-Montoya S, Carreño-Vázquez E, Orozco-Solis R. Hypothalamic circuits and aging: keeping the circadian clock updated. Neural Regen Res 2024; 19:1919-1928. [PMID: 38227516 DOI: 10.4103/1673-5374.389624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 10/20/2023] [Indexed: 01/17/2024] Open
Abstract
Over the past century, age-related diseases, such as cancer, type-2 diabetes, obesity, and mental illness, have shown a significant increase, negatively impacting overall quality of life. Studies on aged animal models have unveiled a progressive discoordination at multiple regulatory levels, including transcriptional, translational, and post-translational processes, resulting from cellular stress and circadian derangements. The circadian clock emerges as a key regulator, sustaining physiological homeostasis and promoting healthy aging through timely molecular coordination of pivotal cellular processes, such as stem-cell function, cellular stress responses, and inter-tissue communication, which become disrupted during aging. Given the crucial role of hypothalamic circuits in regulating organismal physiology, metabolic control, sleep homeostasis, and circadian rhythms, and their dependence on these processes, strategies aimed at enhancing hypothalamic and circadian function, including pharmacological and non-pharmacological approaches, offer systemic benefits for healthy aging. Intranasal brain-directed drug administration represents a promising avenue for effectively targeting specific brain regions, like the hypothalamus, while reducing side effects associated with systemic drug delivery, thereby presenting new therapeutic possibilities for diverse age-related conditions.
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Affiliation(s)
| | - Lucia Mendoza-Viveros
- Instituto Nacional de Medicina Genómica (INMEGEN), México City, México
- Centro de Investigacíon sobre el Envejecimiento, Centro de Investigacíon y de Estudios Avanzados (CIE-CINVESTAV), México City, México
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México UNAM, México City, México
| | - Carolina Cid-Castro
- Instituto Nacional de Medicina Genómica (INMEGEN), México City, México
- Centro de Investigacíon sobre el Envejecimiento, Centro de Investigacíon y de Estudios Avanzados (CIE-CINVESTAV), México City, México
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México UNAM, México City, México
| | | | | | - Ricardo Orozco-Solis
- Instituto Nacional de Medicina Genómica (INMEGEN), México City, México
- Centro de Investigacíon sobre el Envejecimiento, Centro de Investigacíon y de Estudios Avanzados (CIE-CINVESTAV), México City, México
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25
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Zhang L, Zhao G, Luo Z, Yu Z, Liu G, Su G, Tang X, Yuan Z, Huang C, Sun HS, Feng ZP, Huang Z. AD16 attenuates neuroinflammation induced by cerebral ischemia through down-regulating astrocytes A1 polarization. Biomed Pharmacother 2024; 178:117209. [PMID: 39094544 DOI: 10.1016/j.biopha.2024.117209] [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: 02/16/2024] [Revised: 07/23/2024] [Accepted: 07/23/2024] [Indexed: 08/04/2024] Open
Abstract
A1 polarization of astrocytes mediated prolonged inflammation contributing to brain injury in ischemic stroke. We have previously shown that AD16 protects against neonatal hypoxic-ischemic brain damage in vivo and oxygen-glucose deprivation in vitro. More recently, AD16 has demonstrated safety, tolerability, and favorable pharmacokinetics in a randomized controlled phase I trial. In this study, we utilized a rat model of transient middle cerebral artery occlusion (tMCAO) to explore whether the anti-inflammatory compound AD16 protects against ischemic brain injury by regulating A1 polarization and its underlying mechanisms. Our results showed that AD16 treatment significantly reduced the brain infarcted volume and improved neurological function in tMCAO rats. GO analysis results show that differential genes among the Sham, tMCAO and AD16 treatment groups are involved in the regulation of cytokine and inflammatory response. KEGG enrichment pathways analysis mainly enriched in cytokine-cytokine receptor interaction, viral protein interaction with cytokine-cytokine receptor, TNF, chemokine, NF-κB and IL-17 signaling pathway. Furthermore, AD16 treatment decreased the permeability of the blood-brain barrier and suppressed neuroinflammation. AD16 treatment also significantly reduced the polarization of A1 and inhibited NF-κB and JAK2/STAT3 signaling pathways. This study demonstrates that AD16 protects against brain injury in ischemic stroke by reducing A1 polarization to suppress neuroinflammation through downregulating NF-κB and JAK2/STAT3 signaling. Our findings uncover a potential molecular mechanism for AD16 and suggest that AD16 holds promising therapeutic potential against cerebral ischemia.
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Affiliation(s)
- Limei Zhang
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Jiangxi Province Key Laboratory of Pharmacology of Traditional Chinese Medicine, Ganzhou Key Laboratory of Neuroinflammation Research, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou 341000, China; School of Basic Medical Sciences, China Medical University, Shengyang 110122, China
| | - Guojian Zhao
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Jiangxi Province Key Laboratory of Pharmacology of Traditional Chinese Medicine, Ganzhou Key Laboratory of Neuroinflammation Research, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou 341000, China
| | - Zhengwei Luo
- Department of Physiology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada; Department of Surgery, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Zining Yu
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Jiangxi Province Key Laboratory of Pharmacology of Traditional Chinese Medicine, Ganzhou Key Laboratory of Neuroinflammation Research, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou 341000, China
| | - Gaigai Liu
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Jiangxi Province Key Laboratory of Pharmacology of Traditional Chinese Medicine, Ganzhou Key Laboratory of Neuroinflammation Research, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou 341000, China
| | - Guangjun Su
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Jiangxi Province Key Laboratory of Pharmacology of Traditional Chinese Medicine, Ganzhou Key Laboratory of Neuroinflammation Research, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou 341000, China
| | - Xiaolu Tang
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Jiangxi Province Key Laboratory of Pharmacology of Traditional Chinese Medicine, Ganzhou Key Laboratory of Neuroinflammation Research, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou 341000, China
| | - Zhidong Yuan
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Jiangxi Province Key Laboratory of Pharmacology of Traditional Chinese Medicine, Ganzhou Key Laboratory of Neuroinflammation Research, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou 341000, China
| | - Cheng Huang
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Jiangxi Province Key Laboratory of Pharmacology of Traditional Chinese Medicine, Ganzhou Key Laboratory of Neuroinflammation Research, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou 341000, China
| | - Hong-Shuo Sun
- Department of Physiology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada; Department of Surgery, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada.
| | - Zhong-Ping Feng
- Department of Physiology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada.
| | - Zhihua Huang
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Jiangxi Province Key Laboratory of Pharmacology of Traditional Chinese Medicine, Ganzhou Key Laboratory of Neuroinflammation Research, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou 341000, China; School of Basic Medical Sciences, China Medical University, Shengyang 110122, China.
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26
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Sokolova D, Ghansah SA, Puletti F, Georgiades T, De Schepper S, Zheng Y, Crowley G, Wu L, Rueda-Carrasco J, Koutsiouroumpa A, Muckett P, Freeman OJ, Khakh BS, Hong S. Astrocyte-derived MFG-E8 facilitates microglial synapse elimination in Alzheimer's disease mouse models. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.08.31.606944. [PMID: 39257734 PMCID: PMC11383703 DOI: 10.1101/2024.08.31.606944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/12/2024]
Abstract
Region-specific synapse loss is an early pathological hallmark in Alzheimer's disease (AD). Emerging data in mice and humans highlight microglia, the brain-resident macrophages, as cellular mediators of synapse loss; however, the upstream modulators of microglia-synapse engulfment remain elusive. Here, we report a distinct subset of astrocytes, which are glial cells essential for maintaining synapse homeostasis, appearing in a region-specific manner with age and amyloidosis at onset of synapse loss. These astrocytes are distinguished by their peri-synaptic processes which are 'bulbous' in morphology, contain accumulated p62-immunoreactive bodies, and have reduced territorial domains, resulting in a decrease of astrocyte-synapse coverage. Using integrated in vitro and in vivo approaches, we show that astrocytes upregulate and secrete phagocytic modulator, milk fat globule-EGF factor 8 (MFG-E8), which is sufficient and necessary for promoting microglia-synapse engulfment in their local milieu. Finally, we show that knocking down Mfge8 specifically from astrocytes using a viral CRISPR-saCas9 system prevents microglia-synapse engulfment and ameliorates synapse loss in two independent amyloidosis mouse models of AD. Altogether, our findings highlight astrocyte-microglia crosstalk in determining synapse fate in amyloid models and nominate astrocytic MFGE8 as a potential target to ameliorate synapse loss during the earliest stages of AD.
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Affiliation(s)
- Dimitra Sokolova
- UK Dementia Research Institute, Institute of Neurology, University College London, Gower Street, London, WC1E 6BT, United Kingdom
- Neuroscience BioPharmaceuticals R&D, AstraZeneca, Cambridge, United Kingdom
| | - Shari Addington Ghansah
- UK Dementia Research Institute, Institute of Neurology, University College London, Gower Street, London, WC1E 6BT, United Kingdom
| | - Francesca Puletti
- UK Dementia Research Institute, Institute of Neurology, University College London, Gower Street, London, WC1E 6BT, United Kingdom
| | - Tatiana Georgiades
- UK Dementia Research Institute, Institute of Neurology, University College London, Gower Street, London, WC1E 6BT, United Kingdom
| | - Sebastiaan De Schepper
- UK Dementia Research Institute, Institute of Neurology, University College London, Gower Street, London, WC1E 6BT, United Kingdom
| | - Yongjing Zheng
- UK Dementia Research Institute, Institute of Neurology, University College London, Gower Street, London, WC1E 6BT, United Kingdom
| | - Gerard Crowley
- UK Dementia Research Institute, Institute of Neurology, University College London, Gower Street, London, WC1E 6BT, United Kingdom
| | - Ling Wu
- Department of Physiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095-1751, USA; Department of Neurobiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095-1751, USA
| | - Javier Rueda-Carrasco
- UK Dementia Research Institute, Institute of Neurology, University College London, Gower Street, London, WC1E 6BT, United Kingdom
| | - Angeliki Koutsiouroumpa
- UK Dementia Research Institute, Institute of Neurology, University College London, Gower Street, London, WC1E 6BT, United Kingdom
| | - Philip Muckett
- UK Dementia Research Institute, Institute of Neurology, University College London, Gower Street, London, WC1E 6BT, United Kingdom
| | - Oliver J Freeman
- Neuroscience BioPharmaceuticals R&D, AstraZeneca, Cambridge, United Kingdom
| | - Baljit S Khakh
- Department of Physiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095-1751, USA; Department of Neurobiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095-1751, USA
| | - Soyon Hong
- UK Dementia Research Institute, Institute of Neurology, University College London, Gower Street, London, WC1E 6BT, United Kingdom
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Pérez LA, Palacios E, González MF, Leyton-Rivera I, Martínez-Meza S, Pérez-Núñez R, Jeldes E, Avalos AM, Díaz J, Leyton L. A Pro-Inflammatory Stimulus versus Extensive Passaging of DITNC1 Astrocyte Cultures as Models to Study Astrogliosis. Int J Mol Sci 2024; 25:9454. [PMID: 39273404 PMCID: PMC11394751 DOI: 10.3390/ijms25179454] [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: 07/12/2024] [Revised: 08/19/2024] [Accepted: 08/22/2024] [Indexed: 09/15/2024] Open
Abstract
Astrogliosis is a process by which astrocytes, when exposed to inflammation, exhibit hypertrophy, motility, and elevated expression of reactivity markers such as Glial Fibrillar Acidic Protein, Vimentin, and Connexin43. Since 1999, our laboratory in Chile has been studying molecular signaling pathways associated with "gliosis" and has reported that reactive astrocytes upregulate Syndecan 4 and αVβ3 Integrin, which are receptors for the neuronal glycoprotein Thy-1. Thy-1 engagement stimulates adhesion and migration of reactive astrocytes and induces neurons to retract neurites, thus hindering neuronal network repair. Reportedly, we have used DITNC1 astrocytes and neuron-like CAD cells to study signaling mechanisms activated by the Syndecan 4-αVβ3 Integrin/Thy-1 interaction. Importantly, the sole overexpression of β3 Integrin in non-reactive astrocytes turns them into reactive cells. In vitro, extensive passaging is a simile for "aging", and aged fibroblasts have shown β3 Integrin upregulation. However, it is not known if astrocytes upregulate β3 Integrin after successive cell passages. Here, we hypothesized that astrocytes undergoing long-term passaging increase β3 Integrin expression levels and behave as reactive astrocytes without needing pro-inflammatory stimuli. We used DITNC1 cells with different passage numbers to study reactivity markers using immunoblots, immunofluorescence, and astrocyte adhesion/migration assays. We also evaluated β3 Integrin levels by immunoblot and flow cytometry, as well as the neurotoxic effects of reactive astrocytes. Serial cell passaging mimicked the effects of inflammatory stimuli, inducing astrocyte reactivity. Indeed, in response to Thy-1, β3 Integrin levels, as well as cell adhesion and migration, gradually increased with multiple passages. Importantly, these long-lived astrocytes expressed and secreted factors that inhibited neurite outgrowth and caused neuronal death, just like reactive astrocytes in culture. Therefore, we describe two DITNC1 cell types: a non-reactive type that can be activated with Tumor Necrosis Factor (TNF) and another one that exhibits reactive astrocyte features even in the absence of TNF treatment. Our results emphasize the importance of passage numbers in cell behavior. Likewise, we compare the pro-inflammatory stimulus versus long-term in-plate passaging of cell cultures and introduce them as astrocyte models to study the reactivity process.
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Affiliation(s)
- Leonardo A Pérez
- Cellular Communication Laboratory, Center for Studies on Exercise, Metabolism and Cancer (CEMC), Instituto de Ciencias Biomédicas (ICBM), Facultad de Medicina, Universidad de Chile, Santiago 838-0453, Chile
- Advanced Center for Chronic Diseases (ACCDiS), Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago 838-0453, Chile
| | - Esteban Palacios
- Cellular Communication Laboratory, Center for Studies on Exercise, Metabolism and Cancer (CEMC), Instituto de Ciencias Biomédicas (ICBM), Facultad de Medicina, Universidad de Chile, Santiago 838-0453, Chile
- Advanced Center for Chronic Diseases (ACCDiS), Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago 838-0453, Chile
- Laboratorio de Microbiología Celular, Instituto de Investigación y Postgrado, Facultad de Ciencias de la Salud, Universidad Central de Chile, Santiago 833-0546, Chile
| | - María Fernanda González
- Cellular Communication Laboratory, Center for Studies on Exercise, Metabolism and Cancer (CEMC), Instituto de Ciencias Biomédicas (ICBM), Facultad de Medicina, Universidad de Chile, Santiago 838-0453, Chile
- Advanced Center for Chronic Diseases (ACCDiS), Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago 838-0453, Chile
| | - Ignacio Leyton-Rivera
- Cellular Communication Laboratory, Center for Studies on Exercise, Metabolism and Cancer (CEMC), Instituto de Ciencias Biomédicas (ICBM), Facultad de Medicina, Universidad de Chile, Santiago 838-0453, Chile
- Advanced Center for Chronic Diseases (ACCDiS), Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago 838-0453, Chile
| | - Samuel Martínez-Meza
- Cellular Communication Laboratory, Center for Studies on Exercise, Metabolism and Cancer (CEMC), Instituto de Ciencias Biomédicas (ICBM), Facultad de Medicina, Universidad de Chile, Santiago 838-0453, Chile
- Advanced Center for Chronic Diseases (ACCDiS), Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago 838-0453, Chile
| | - Ramón Pérez-Núñez
- Cellular Communication Laboratory, Center for Studies on Exercise, Metabolism and Cancer (CEMC), Instituto de Ciencias Biomédicas (ICBM), Facultad de Medicina, Universidad de Chile, Santiago 838-0453, Chile
- Advanced Center for Chronic Diseases (ACCDiS), Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago 838-0453, Chile
| | - Emanuel Jeldes
- Andes Biotechnologies SpA, Santiago 7750000, Chile
- Centro Científico y Tecnológico de Excelencia Ciencia y Vida, Santiago 7750000, Chile
| | - Ana María Avalos
- Instituto de Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Santiago 7500912, Chile
| | - Jorge Díaz
- Cellular Communication Laboratory, Center for Studies on Exercise, Metabolism and Cancer (CEMC), Instituto de Ciencias Biomédicas (ICBM), Facultad de Medicina, Universidad de Chile, Santiago 838-0453, Chile
- Advanced Center for Chronic Diseases (ACCDiS), Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago 838-0453, Chile
| | - Lisette Leyton
- Cellular Communication Laboratory, Center for Studies on Exercise, Metabolism and Cancer (CEMC), Instituto de Ciencias Biomédicas (ICBM), Facultad de Medicina, Universidad de Chile, Santiago 838-0453, Chile
- Advanced Center for Chronic Diseases (ACCDiS), Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago 838-0453, Chile
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28
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Naveed M, Smedlund K, Zhou QG, Cai W, Hill JW. Astrocyte involvement in metabolic regulation and disease. Trends Endocrinol Metab 2024:S1043-2760(24)00220-0. [PMID: 39214743 DOI: 10.1016/j.tem.2024.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Revised: 07/30/2024] [Accepted: 08/02/2024] [Indexed: 09/04/2024]
Abstract
Astrocytes, the predominant glial cell type in the mammalian brain, influence a wide variety of brain parameters including neuronal energy metabolism. Exciting recent studies have shown that obesity and diabetes can impact on astrocyte function. We review evidence that dysregulation of astrocytic lipid metabolism and glucose sensing contributes to dysregulation of whole-body energy balance, thermoregulation, and insulin sensitivity. In addition, we consider the overlooked topic of the sex-specific roles of astrocytes and their response to hormonal fluctuations that provide insights into sex differences in metabolic regulation. Finally, we provide an update on potential ways to manipulate astrocyte function, including genetic targeting, optogenetic and chemogenetic techniques, transplantation, and tailored exosome-based therapies, which may lead to improved treatments for metabolic disease.
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Affiliation(s)
- Muhammad Naveed
- Department of Physiology and Pharmacology, School of Medicine and Life Sciences, University of Toledo, Toledo, OH, USA
| | - Kathryn Smedlund
- Department of Physiology and Pharmacology, School of Medicine and Life Sciences, University of Toledo, Toledo, OH, USA
| | - Qi-Gang Zhou
- Department of Clinical Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, China
| | - Weikang Cai
- Department of Biomedical Sciences, College of Osteopathic Medicine, New York Institute of Technology, Old Westbury, NY, USA
| | - Jennifer W Hill
- Department of Physiology and Pharmacology, School of Medicine and Life Sciences, University of Toledo, Toledo, OH, USA; Center for Diabetes and Endocrine Research, University of Toledo, Toledo, OH, USA.
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29
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Doroszkiewicz J, Mroczko J, Winkel I, Mroczko B. Metabolic and Immune System Dysregulation: Unraveling the Connections between Alzheimer's Disease, Diabetes, Inflammatory Bowel Diseases, and Rheumatoid Arthritis. J Clin Med 2024; 13:5057. [PMID: 39274269 PMCID: PMC11396443 DOI: 10.3390/jcm13175057] [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: 08/09/2024] [Revised: 08/22/2024] [Accepted: 08/23/2024] [Indexed: 09/16/2024] Open
Abstract
Alzheimer's disease (AD), diabetes mellitus (DM), inflammatory bowel diseases (IBD), and rheumatoid arthritis (RA) are chronic conditions affecting millions globally. Despite differing clinical symptoms, these diseases share pathophysiological mechanisms involving metabolic and immune system dysregulation. This paper examines the intricate connections between these disorders, focusing on shared pathways such as insulin resistance, lipid metabolism dysregulation, oxidative stress, and chronic inflammation. An important aspect is the role of amyloid-beta plaques and tau protein tangles, which are hallmark features of AD. These protein aggregates are influenced by metabolic dysfunction and inflammatory processes similar to those seen in DM, RA, and IBD. This manuscript explores how amyloid and tau pathologies may be exacerbated by shared metabolic and immune dysfunction. Additionally, this work discusses the gut-brain axis and the influence of gut microbiota in mediating disease interactions. Understanding these commonalities opens new avenues for multi-targeted therapeutic approaches that address the root causes rather than merely the symptoms of these conditions. This integrative perspective could lead to more effective interventions and improved patient outcomes, emphasizing the importance of a unified approach in managing these interconnected diseases.
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Affiliation(s)
- Julia Doroszkiewicz
- Department of Neurodegeneration Diagnostics, Medical University of Bialystok, 15-269 Bialystok, Poland
| | - Jan Mroczko
- Department of Neurodegeneration Diagnostics, Medical University of Bialystok, 15-269 Bialystok, Poland
| | - Izabela Winkel
- Dementia Disorders Centre, Medical University of Wroclaw, 50-425 Scinawa, Poland
| | - Barbara Mroczko
- Department of Neurodegeneration Diagnostics, Medical University of Bialystok, 15-269 Bialystok, Poland
- Department of Biochemical Diagnostics, Medical University of Bialystok, 15-269 Bialystok, Poland
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Rosberg R, Smolag KI, Sjölund J, Johansson E, Bergelin C, Wahldén J, Pantazopoulou V, Ceberg C, Pietras K, Blom AM, Pietras A. Hypoxia-induced complement component 3 promotes aggressive tumor growth in the glioblastoma microenvironment. JCI Insight 2024; 9:e179854. [PMID: 39172519 PMCID: PMC11466187 DOI: 10.1172/jci.insight.179854] [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: 01/29/2024] [Accepted: 08/15/2024] [Indexed: 08/24/2024] Open
Abstract
Glioblastoma (GBM) is the most aggressive form of glioma with a high rate of relapse despite intensive treatment. Tumor recurrence is tightly linked to radio-resistance, which in turn is associated with hypoxia. Here, we discovered a strong link between hypoxia and local complement signaling using publicly available bulk, single-cell, and spatially resolved transcriptomic data from patients with GBM. Complement component 3 (C3) and the receptor C3AR1 were both associated with aggressive disease and shorter survival in human glioma. In a genetically engineered mouse model of GBM, we found C3 specifically in hypoxic tumor areas. In vitro, we found an oxygen level-dependent increase in C3 and C3AR1 expression in response to hypoxia in several GBM and stromal cell types. C3a induced M2 polarization of cultured microglia and macrophages in a C3aR-dependent fashion. Targeting C3aR using the antagonist SB290157 prolonged survival of glioma-bearing mice both alone and in combination with radiotherapy while reducing the number of M2-polarized macrophages. Our findings establish a strong link between hypoxia and complement pathways in GBM and support a role of hypoxia-induced C3a/C3aR signaling as a contributor to glioma aggressiveness by regulating macrophage polarization.
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Affiliation(s)
- Rebecca Rosberg
- Division of Translational Cancer Research, Department of Laboratory Medicine, Lund University Cancer Centre, Lund University, Lund, Sweden
| | - Karolina I. Smolag
- Division of Translational Cancer Research, Department of Laboratory Medicine, Lund University Cancer Centre, Lund University, Lund, Sweden
- Section of Medical Protein Chemistry, Department of Translational Medicine, Lund University, Malmö, Sweden
| | - Jonas Sjölund
- Division of Translational Cancer Research, Department of Laboratory Medicine, Lund University Cancer Centre, Lund University, Lund, Sweden
| | - Elinn Johansson
- Division of Translational Cancer Research, Department of Laboratory Medicine, Lund University Cancer Centre, Lund University, Lund, Sweden
| | - Christina Bergelin
- Division of Translational Cancer Research, Department of Laboratory Medicine, Lund University Cancer Centre, Lund University, Lund, Sweden
| | - Julia Wahldén
- Division of Translational Cancer Research, Department of Laboratory Medicine, Lund University Cancer Centre, Lund University, Lund, Sweden
| | - Vasiliki Pantazopoulou
- Division of Translational Cancer Research, Department of Laboratory Medicine, Lund University Cancer Centre, Lund University, Lund, Sweden
| | - Crister Ceberg
- Division of Medical Radiation Physics, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Kristian Pietras
- Division of Translational Cancer Research, Department of Laboratory Medicine, Lund University Cancer Centre, Lund University, Lund, Sweden
| | - Anna M. Blom
- Section of Medical Protein Chemistry, Department of Translational Medicine, Lund University, Malmö, Sweden
| | - Alexander Pietras
- Division of Translational Cancer Research, Department of Laboratory Medicine, Lund University Cancer Centre, Lund University, Lund, Sweden
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Gan YL, Lin WJ, Fang YC, Tang CY, Lee YH, Jeng CJ. FKBP51 is involved in LPS-induced microglial activation via NF-κB signaling to mediate neuroinflammation. Life Sci 2024; 351:122867. [PMID: 38914303 DOI: 10.1016/j.lfs.2024.122867] [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: 04/27/2024] [Revised: 06/03/2024] [Accepted: 06/20/2024] [Indexed: 06/26/2024]
Abstract
AIMS FKBP5 encodes FKBP51, which has been implicated in stress-related psychiatric disorders, and its expression is often increased under chronic stress, contributing to mental dysfunctions. However, the precise role of FKBP51 in brain inflammation remains unclear. This study aimed to investigate the role of FKBP51 in microglia-mediated inflammatory responses in the central nervous system. MAIN METHODS We employed a peripheral lipopolysaccharide (LPS) administration model to compare microglial activation and cytokine gene expression between Fkbp5 knockout (Fkbp5-KO) and wild-type (WT) male mice. Additionally, we used both BV2 and primary microglia in vitro to examine how Fkbp5 deletion influenced inflammation-related pathways and microglial functions. KEY FINDINGS This study revealed that systemic LPS-induced microglial activation was significantly attenuated in Fkbp5-KO mice compared with WT mice. In Fkbp5-KO mice following the LPS challenge, there was a notable decrease in the expression of pro-inflammatory genes, coupled with an increase in the anti-inflammatory gene Arg1. Furthermore, Fkbp5 knockdown in BV2 microglial cells led to reduced expression of LPS-induced inflammatory markers, and targeted inhibition of NF-κB activation, while Akt signaling remained unaffected. Similar results were observed in Fkbp5-KO primary microglia, which exhibited not only decreased microglial activation but also a significant reduction in phagocytic activity in response to LPS stimulation. SIGNIFICANCE This study highlights the critical role of FKBP51 in LPS-induced microglial activation and neuroinflammation. It shows that reducing FKBP51 levels attenuates inflammation through NF-κB signaling in microglia. This suggests that FKBP51 is a potential target for alleviating neuroinflammation-induced stress responses.
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Affiliation(s)
- Yu-Ling Gan
- Institute of Anatomy and Cell Biology, College of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; Department and Institute of Physiology, College of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Wan-Jung Lin
- Institute of Anatomy and Cell Biology, College of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; Department of Physiology, College of Medicine, National Taiwan University, Taipei 100, Taiwan
| | - Ya-Ching Fang
- Institute of Anatomy and Cell Biology, College of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; Department of Physiology, College of Medicine, National Taiwan University, Taipei 100, Taiwan
| | - Chih-Yung Tang
- Department of Physiology, College of Medicine, National Taiwan University, Taipei 100, Taiwan
| | - Yi-Hsuan Lee
- Department and Institute of Physiology, College of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; Brain Research Center, National Yang Ming Chiao Tung University, Taipei 112, Taiwan.
| | - Chung-Jiuan Jeng
- Institute of Anatomy and Cell Biology, College of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; Brain Research Center, National Yang Ming Chiao Tung University, Taipei 112, Taiwan.
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32
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Qie S, Xiong H, Liu Y, Yan C, Wang Y, Tian L, Wang C, Sang N. Stanniocalcin 2 governs cancer cell adaptation to nutrient insufficiency through alleviation of oxidative stress. Cell Death Dis 2024; 15:567. [PMID: 39107307 PMCID: PMC11303387 DOI: 10.1038/s41419-024-06961-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 07/27/2024] [Accepted: 07/29/2024] [Indexed: 08/10/2024]
Abstract
Solid tumours often endure nutrient insufficiency during progression. How tumour cells adapt to temporal and spatial nutrient insufficiency remains unclear. We previously identified STC2 as one of the most upregulated genes in cells exposed to nutrient insufficiency by transcriptome screening, indicating the potential of STC2 in cellular adaptation to nutrient insufficiency. However, the molecular mechanisms underlying STC2 induction by nutrient insufficiency and subsequent adaptation remain elusive. Here, we report that STC2 protein is dramatically increased and secreted into the culture media by Gln-/Glc- deprivation. STC2 promoter contains cis-elements that are activated by ATF4 and p65/RelA, two transcription factors activated by a variety of cellular stress. Biologically, STC2 induction and secretion promote cell survival but attenuate cell proliferation during nutrient insufficiency, thus switching the priority of cancer cells from proliferation to survival. Loss of STC2 impairs tumour growth by inducing both apoptosis and necrosis in mouse xenografts. Mechanistically, under nutrient insufficient conditions, cells have increased levels of reactive oxygen species (ROS), and lack of STC2 further elevates ROS levels that lead to increased apoptosis. RNA-Seq analyses reveal STC2 induction suppresses the expression of monoamine oxidase B (MAOB), a mitochondrial membrane enzyme that produces ROS. Moreover, a negative correlation between STC2 and MAOB levels is also identified in human tumour samples. Importantly, the administration of recombinant STC2 to the culture media effectively suppresses MAOB expression as well as apoptosis, suggesting STC2 functions in an autocrine/paracrine manner. Taken together, our findings indicate that nutrient insufficiency induces STC2 expression, which in turn governs the adaptation of cancer cells to nutrient insufficiency through the maintenance of redox homoeostasis, highlighting the potential of STC2 as a therapeutic target for cancer treatment.
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Affiliation(s)
- Shuo Qie
- Department of Pathology, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China.
- National Clinical Research Center for Cancer, Tianjin, China.
- Key Laboratory of Cancer Prevention and Therapy (Tianjin), Tianjin, China.
- Tianjin's Clinical Research Center for Cancer, Tianjin, China.
| | - Haijuan Xiong
- Department of Pathology, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
- National Clinical Research Center for Cancer, Tianjin, China
- Key Laboratory of Cancer Prevention and Therapy (Tianjin), Tianjin, China
- Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Yaqi Liu
- Department of Pathology, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
- National Clinical Research Center for Cancer, Tianjin, China
- Key Laboratory of Cancer Prevention and Therapy (Tianjin), Tianjin, China
- Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Chenhui Yan
- Department of Pathology, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
- National Clinical Research Center for Cancer, Tianjin, China
- Key Laboratory of Cancer Prevention and Therapy (Tianjin), Tianjin, China
- Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Yalei Wang
- Department of Pathology, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
- National Clinical Research Center for Cancer, Tianjin, China
- Key Laboratory of Cancer Prevention and Therapy (Tianjin), Tianjin, China
- Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Lifeng Tian
- Department of Cancer Biology, Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA
| | - Chenguang Wang
- Department of Cancer Biology, Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA
| | - Nianli Sang
- Department of Biology, Drexel University, Philadelphia, PA, USA.
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33
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Sun Z, Kwon JS, Ren Y, Chen S, Walker CK, Lu X, Cates K, Karahan H, Sviben S, Fitzpatrick JAJ, Valdez C, Houlden H, Karch CM, Bateman RJ, Sato C, Mennerick SJ, Diamond MI, Kim J, Tanzi RE, Holtzman DM, Yoo AS. Modeling late-onset Alzheimer's disease neuropathology via direct neuronal reprogramming. Science 2024; 385:adl2992. [PMID: 39088624 DOI: 10.1126/science.adl2992] [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: 10/11/2023] [Accepted: 05/31/2024] [Indexed: 08/03/2024]
Abstract
Late-onset Alzheimer's disease (LOAD) is the most common form of Alzheimer's disease (AD). However, modeling sporadic LOAD that endogenously captures hallmark neuronal pathologies such as amyloid-β (Aβ) deposition, tau tangles, and neuronal loss remains an unmet need. We demonstrate that neurons generated by microRNA (miRNA)-based direct reprogramming of fibroblasts from individuals affected by autosomal dominant AD (ADAD) and LOAD in a three-dimensional environment effectively recapitulate key neuropathological features of AD. Reprogrammed LOAD neurons exhibit Aβ-dependent neurodegeneration, and treatment with β- or γ-secretase inhibitors before (but not subsequent to) Aβ deposit formation mitigated neuronal death. Moreover inhibiting age-associated retrotransposable elements in LOAD neurons reduced both Aβ deposition and neurodegeneration. Our study underscores the efficacy of modeling late-onset neuropathology of LOAD through high-efficiency miRNA-based neuronal reprogramming.
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Affiliation(s)
- Zhao Sun
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
- Center for Regenerative Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
- Hope Center for Neurological Disorders, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Ji-Sun Kwon
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
- Program in Computational and Systems Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Yudong Ren
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
- Program in Developmental, Regenerative, and Stem Cell Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Shawei Chen
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
- Center for Regenerative Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
- Hope Center for Neurological Disorders, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Courtney K Walker
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
- Center for Regenerative Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
- Hope Center for Neurological Disorders, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Xinguo Lu
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Kitra Cates
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
- Program in Molecular Genetics and Genomics, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Hande Karahan
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN 46202, USA
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Sanja Sviben
- Washington University Center for Cellular Imaging, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - James A J Fitzpatrick
- Washington University Center for Cellular Imaging, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Clarissa Valdez
- Center for Alzheimer's and Neurodegenerative Diseases, Peter O'Donnell Jr. Brain Institute, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Henry Houlden
- UCL Institute of Neurology, Queen Square, London, WC1N 3BG, UK
| | - Celeste M Karch
- Hope Center for Neurological Disorders, Washington University School of Medicine, St. Louis, MO 63110, USA
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO 63110, USA
- Knight Alzheimer's Disease Research Center, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Randall J Bateman
- Tracy Family SILQ Center for Neurodegenerative Biology, St. Louis, MO 63110, USA
- Department of Neurology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Chihiro Sato
- Tracy Family SILQ Center for Neurodegenerative Biology, St. Louis, MO 63110, USA
- Department of Neurology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Steven J Mennerick
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Marc I Diamond
- Center for Alzheimer's and Neurodegenerative Diseases, Peter O'Donnell Jr. Brain Institute, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Jungsu Kim
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN 46202, USA
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Rudolph E Tanzi
- Genetics and Aging Research Unit, MassGeneral Institute for Neurodegenerative Disease, McCance Center for Brain Health, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA
| | - David M Holtzman
- Hope Center for Neurological Disorders, Washington University School of Medicine, St. Louis, MO 63110, USA
- Knight Alzheimer's Disease Research Center, Washington University School of Medicine, St. Louis, MO 63110, USA
- Department of Neurology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Andrew S Yoo
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
- Center for Regenerative Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
- Hope Center for Neurological Disorders, Washington University School of Medicine, St. Louis, MO 63110, USA
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34
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Saenz‐Antoñanzas A, Muñoz‐Culla M, Rigo P, Ruiz‐Barreiro L, Moreno‐Valladares M, Alberro A, Cruces‐Salguero S, Arroyo‐Izaga M, Arranz AM, Otaegui D, Guillemot F, Matheu A. Centenarian hippocampus displays high levels of astrocytic metallothioneins. Aging Cell 2024; 23:e14201. [PMID: 38769809 PMCID: PMC11320342 DOI: 10.1111/acel.14201] [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: 01/09/2024] [Revised: 04/10/2024] [Accepted: 04/26/2024] [Indexed: 05/22/2024] Open
Abstract
The hippocampus is a brain area linked to cognition. The mechanisms that maintain cognitive activity in humans are poorly understood. Centenarians display extreme longevity which is generally accompanied by better quality of life, lower cognitive impairment, and reduced incidence of pathologies including neurodegenerative diseases. We performed transcriptomic studies in hippocampus samples from individuals of different ages (centenarians [≥97 years], old, and young) and identified a differential gene expression pattern in centenarians compared to the other two groups. In particular, several isoforms of metallothioneins (MTs) were highly expressed in centenarians. Moreover, we identified that MTs were mainly expressed in astrocytes. Functional studies in human primary astrocytes revealed that MT1 and MT3 are necessary for their homeostasis maintenance. Overall, these results indicate that the expression of MTs specifically in astrocytes is a mechanism for protection during aging.
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Affiliation(s)
| | - Maider Muñoz‐Culla
- Multiple Sclerosis GroupBiodonostia Health Research InstituteSan SebastianSpain
- CIBERNED, ISCIIIMadridSpain
- Department of Basic Psychological Processes and their DevelopmentUniversity of the Basque Country (UPV/EHU)San SebastianSpain
| | - Piero Rigo
- Neural Stem Cell Biology LaboratoryThe Francis Crick InstituteLondonUK
| | - Leire Ruiz‐Barreiro
- Laboratory of Humanized Models of Disease, Achucarro Basque Center for NeuroscienceLeioaSpain
| | | | - Ainhoa Alberro
- Multiple Sclerosis GroupBiodonostia Health Research InstituteSan SebastianSpain
- CIBERNED, ISCIIIMadridSpain
| | | | - Marta Arroyo‐Izaga
- BIOMICs Research Group, Microfluidics & BIOMICs, Department of Pharmacy and Food Sciences, Lascaray Research CenterUniversity of the Basque Country (UPV/EHU), BioarabaVitoriaSpain
| | - Amaia M. Arranz
- Laboratory of Humanized Models of Disease, Achucarro Basque Center for NeuroscienceLeioaSpain
- IKERBASQUE, Basque Foundation for ScienceBilbaoSpain
| | - David Otaegui
- Multiple Sclerosis GroupBiodonostia Health Research InstituteSan SebastianSpain
- CIBERNED, ISCIIIMadridSpain
| | | | - Ander Matheu
- Cellular Oncology GroupBiodonostia Health Research InstituteSan SebastianSpain
- IKERBASQUE, Basque Foundation for ScienceBilbaoSpain
- CIBERFES, ISCIIIMadridSpain
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35
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Qiu R, Cai Y, Su Y, Fan K, Sun Z, Zhang Y. Emerging insights into Lipocalin-2: Unraveling its role in Parkinson's Disease. Biomed Pharmacother 2024; 177:116947. [PMID: 38901198 DOI: 10.1016/j.biopha.2024.116947] [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: 03/03/2024] [Revised: 04/22/2024] [Accepted: 04/24/2024] [Indexed: 06/22/2024] Open
Abstract
Parkinson's disease (PD) ranks as the second most prevalent neurodegenerative disorder globally, marked by a complex pathogenesis. Lipocalin-2 (LCN2) emerges as a crucial factor during the progression of PD. Belonging to the lipocalin family, LCN2 is integral to several biological functions, including glial cell activation, iron homeostasis regulation, immune response, inflammatory reactions, and oxidative stress mitigation. Substantial research has highlighted marked increases in LCN2 expression within the substantia nigra (SN), cerebrospinal fluid (CSF), and blood of individuals with PD. This review focuses on the pathological roles of LCN2 in neuroinflammation, aging, neuronal damage, and iron dysregulation in PD. It aims to explore the underlying mechanisms of LCN2 in the disease and potential therapeutic targets that could inform future treatment strategies.
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Affiliation(s)
- Ruqing Qiu
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Yunjia Cai
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Yana Su
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Kangli Fan
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Zhihui Sun
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Ying Zhang
- Department of Neurology, The First Hospital of Jilin University, Changchun, China.
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36
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Bergmans S, Noel NCL, Masin L, Harding EG, Krzywańska AM, De Schutter JD, Ayana R, Hu C, Arckens L, Ruzycki PA, MacDonald RB, Clark BS, Moons L. Age-related dysregulation of the retinal transcriptome in African turquoise killifish. Aging Cell 2024; 23:e14192. [PMID: 38742929 PMCID: PMC11320354 DOI: 10.1111/acel.14192] [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: 03/06/2024] [Revised: 04/19/2024] [Accepted: 04/22/2024] [Indexed: 05/16/2024] Open
Abstract
Age-related vision loss caused by retinal neurodegenerative pathologies is becoming more prevalent in our ageing society. To understand the physiological and molecular impact of ageing on retinal homeostasis, we used the short-lived African turquoise killifish, a model known to naturally develop central nervous system (CNS) ageing hallmarks and vision loss. Bulk and single-cell RNA-sequencing (scRNAseq) of three age groups (6-, 12-, and 18-week-old) identified transcriptional ageing fingerprints in the killifish retina, unveiling pathways also identified in the aged brain, including oxidative stress, gliosis, and inflammageing. These findings were comparable to observations in the ageing mouse retina. Additionally, transcriptional changes in genes related to retinal diseases, such as glaucoma and age-related macular degeneration, were observed. The cellular heterogeneity in the killifish retina was characterized, confirming the presence of all typical vertebrate retinal cell types. Data integration from age-matched samples between the bulk and scRNAseq experiments revealed a loss of cellular specificity in gene expression upon ageing, suggesting potential disruption in transcriptional homeostasis. Differential expression analysis within the identified cell types highlighted the role of glial/immune cells as important stress regulators during ageing. Our work emphasizes the value of the fast-ageing killifish in elucidating molecular signatures in age-associated retinal disease and vision decline. This study contributes to the understanding of how age-related changes in molecular pathways may impact CNS health, providing insights that may inform future therapeutic strategies for age-related pathologies.
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Affiliation(s)
- Steven Bergmans
- Department of Biology, Animal Physiology and Neurobiology Division, Neural Circuit Development & Regeneration Research GroupKU Leuven, Leuven Brain InstituteLeuvenBelgium
| | | | - Luca Masin
- Department of Biology, Animal Physiology and Neurobiology Division, Neural Circuit Development & Regeneration Research GroupKU Leuven, Leuven Brain InstituteLeuvenBelgium
| | - Ellen G. Harding
- John F Hardesty, MD Department of Ophthalmology and Visual SciencesWashington University School of MedicineSaint LouisMissouriUSA
| | | | - Julie D. De Schutter
- Department of Biology, Animal Physiology and Neurobiology Division, Neural Circuit Development & Regeneration Research GroupKU Leuven, Leuven Brain InstituteLeuvenBelgium
| | - Rajagopal Ayana
- Department of Biology, Animal Physiology and Neurobiology Section, Laboratory of Neuroplasticity and NeuroproteomicsKU Leuven, Leuven Brain InstituteLeuvenBelgium
| | - Chi‐Kuo Hu
- Department of Biochemistry and Cell BiologyStony Brook UniversityStony BrookUSA
| | - Lut Arckens
- Department of Biology, Animal Physiology and Neurobiology Section, Laboratory of Neuroplasticity and NeuroproteomicsKU Leuven, Leuven Brain InstituteLeuvenBelgium
| | - Philip A. Ruzycki
- John F Hardesty, MD Department of Ophthalmology and Visual SciencesWashington University School of MedicineSaint LouisMissouriUSA
- Department of GeneticsWashington University School of MedicineSaint LouisMissouriUSA
| | | | - Brian S. Clark
- John F Hardesty, MD Department of Ophthalmology and Visual SciencesWashington University School of MedicineSaint LouisMissouriUSA
- Department of Developmental BiologyWashington University School of MedicineSaint LouisMissouriUSA
- Center of Regenerative MedicineCenter of Regenerative Medicine, Washington University School of MedicineSaint LouisMissouriUSA
| | - Lieve Moons
- Department of Biology, Animal Physiology and Neurobiology Division, Neural Circuit Development & Regeneration Research GroupKU Leuven, Leuven Brain InstituteLeuvenBelgium
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37
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Man JHK, Breur M, van Gelder CAGH, Marcon G, Maderna E, Giaccone G, Altelaar M, van der Knaap MS, Bugiani M. Region-specific and age-related differences in astrocytes in the human brain. Neurobiol Aging 2024; 140:102-115. [PMID: 38763075 DOI: 10.1016/j.neurobiolaging.2024.02.016] [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: 08/07/2023] [Revised: 02/22/2024] [Accepted: 02/23/2024] [Indexed: 05/21/2024]
Abstract
Astrocyte heterogeneity and its relation to aging in the normal human brain remain poorly understood. We here analyzed astrocytes in gray and white matter brain tissues obtained from donors ranging in age between the neonatal period to over 100 years. We show that astrocytes are differently distributed with higher density in the white matter. This regional difference in cellular density becomes less prominent with age. Additionally, we confirm the presence of morphologically distinct astrocytes, with gray matter astrocytes being morphologically more complex. Notably, gray matter astrocytes morphologically change with age, while white matter astrocytes remain relatively consistent in morphology. Using regional mass spectrometry-based proteomics, we did, however, identify astrocyte specific proteins with regional differences in abundance, reflecting variation in cellular density or expression level. Importantly, the expression of some astrocyte specific proteins region-dependently decreases with age. Taken together, we provide insights into region- and age-related differences in astrocytes in the human brain.
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Affiliation(s)
- Jodie H K Man
- Department of Child Neurology, Amsterdam Leukodystrophy Center, Emma Children's Hospital, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands; Molecular and Cellular Mechanisms, Amsterdam Neuroscience, Amsterdam, the Netherlands
| | - Marjolein Breur
- Department of Child Neurology, Amsterdam Leukodystrophy Center, Emma Children's Hospital, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands; Molecular and Cellular Mechanisms, Amsterdam Neuroscience, Amsterdam, the Netherlands
| | - Charlotte A G H van Gelder
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, the Netherlands; Netherlands Proteomics Center, Utrecht, the Netherlands
| | - Gabriella Marcon
- Department of Medicine, Surgery and Health Sciences, University of Trieste, Trieste, Italy; DAME, University of Udine, Udine, Italy
| | - Emanuela Maderna
- Division of Neurology 5 - Neuropathology, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Giorgio Giaccone
- Division of Neurology 5 - Neuropathology, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Maarten Altelaar
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, the Netherlands; Netherlands Proteomics Center, Utrecht, the Netherlands
| | - Marjo S van der Knaap
- Department of Child Neurology, Amsterdam Leukodystrophy Center, Emma Children's Hospital, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands; Molecular and Cellular Mechanisms, Amsterdam Neuroscience, Amsterdam, the Netherlands; Department of Integrative Neurophysiology, Center for Neurogenomics and Cognitive Research, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Marianna Bugiani
- Department of Pathology, Amsterdam UMC, Amsterdam, the Netherlands.
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38
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Deng Q, Wu C, Parker E, Liu TCY, Duan R, Yang L. Microglia and Astrocytes in Alzheimer's Disease: Significance and Summary of Recent Advances. Aging Dis 2024; 15:1537-1564. [PMID: 37815901 PMCID: PMC11272214 DOI: 10.14336/ad.2023.0907] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 09/07/2023] [Indexed: 10/12/2023] Open
Abstract
Alzheimer's disease, one of the most common forms of dementia, is characterized by a slow progression of cognitive impairment and neuronal loss. Currently, approved treatments for AD are hindered by various side effects and limited efficacy. Despite considerable research, practical treatments for AD have not been developed. Increasing evidence shows that glial cells, especially microglia and astrocytes, are essential in the initiation and progression of AD. During AD progression, activated resident microglia increases the ability of resting astrocytes to transform into reactive astrocytes, promoting neurodegeneration. Extensive clinical and molecular studies show the involvement of microglia and astrocyte-mediated neuroinflammation in AD pathology, indicating that microglia and astrocytes may be potential therapeutic targets for AD. This review will summarize the significant and recent advances of microglia and astrocytes in the pathogenesis of AD in three parts. First, we will review the typical pathological changes of AD and discuss microglia and astrocytes in terms of function and phenotypic changes. Second, we will describe microglia and astrocytes' physiological and pathological role in AD. These roles include the inflammatory response, "eat me" and "don't eat me" signals, Aβ seeding, propagation, clearance, synapse loss, synaptic pruning, remyelination, and demyelination. Last, we will review the pharmacological and non-pharmacological therapies targeting microglia and astrocytes in AD. We conclude that microglia and astrocytes are essential in the initiation and development of AD. Therefore, understanding the new role of microglia and astrocytes in AD progression is critical for future AD studies and clinical trials. Moreover, pharmacological, and non-pharmacological therapies targeting microglia and astrocytes, with specific studies investigating microglia and astrocyte-mediated neuronal damage and repair, may be a promising research direction for future studies regarding AD treatment and prevention.
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Affiliation(s)
- Qianting Deng
- Laboratory of Exercise and Neurobiology, School of Physical Education and Sports Science, South China Normal University, Guangzhou 510006, China.
| | - Chongyun Wu
- Laboratory of Exercise and Neurobiology, School of Physical Education and Sports Science, South China Normal University, Guangzhou 510006, China.
- Laboratory of Regenerative Medicine in Sports Science, School of Physical Education and Sports Science, South China Normal University, Guangzhou 510006, China.
| | - Emily Parker
- Medical College of Georgia at Augusta University, Augusta, GA 30912, USA.
| | - Timon Cheng-Yi Liu
- Laboratory of Laser Sports Medicine, School of Physical Education and Sports Science, South China Normal University, Guangzhou 510006, China.
| | - Rui Duan
- Laboratory of Regenerative Medicine in Sports Science, School of Physical Education and Sports Science, South China Normal University, Guangzhou 510006, China.
| | - Luodan Yang
- Laboratory of Exercise and Neurobiology, School of Physical Education and Sports Science, South China Normal University, Guangzhou 510006, China.
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39
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Wahl D, Risen SJ, Osburn SC, Emge T, Sharma S, Gilberto VS, Chatterjee A, Nagpal P, Moreno JA, LaRocca TJ. Nanoligomers targeting NF-κB and NLRP3 reduce neuroinflammation and improve cognitive function with aging and tauopathy. J Neuroinflammation 2024; 21:182. [PMID: 39068433 PMCID: PMC11283709 DOI: 10.1186/s12974-024-03182-9] [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: 02/13/2024] [Accepted: 07/22/2024] [Indexed: 07/30/2024] Open
Abstract
Neuroinflammation contributes to impaired cognitive function in brain aging and neurodegenerative disorders like Alzheimer's disease, which is characterized by the aggregation of pathological tau. One major driver of both age- and tau-associated neuroinflammation is the NF-κB and NLRP3 signaling axis. However, current treatments targeting NF-κB or NLRP3 may have adverse/systemic effects, and most have not been clinically translatable. In this study, we tested the efficacy of a novel, nucleic acid therapeutic (Nanoligomer) cocktail specifically targeting both NF-κB and NLRP3 in the brain for reducing neuroinflammation and improving cognitive function in old (aged 19 months) wildtype mice, and in rTg4510 tau pathology mice (aged 2 months). We found that 4 weeks of NF-κB/NLRP3-targeting Nanoligomer treatment strongly reduced neuro-inflammatory cytokine profiles in the brain and improved cognitive-behavioral function in both old and rTg4510 mice. These effects of NF-κB/NLRP3-targeting Nanoligomers were also associated with reduced glial cell activation and pathology, favorable changes in transcriptome signatures of glia-associated inflammation (reduced) and neuronal health (increased), and positive systemic effects. Collectively, our results provide a basis for future translational studies targeting both NF-κB and NLRP3 in the brain, perhaps using Nanoligomers, to inhibit neuroinflammation and improve cognitive function with aging and neurodegeneration.
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Affiliation(s)
- Devin Wahl
- Department of Health and Exercise Science, Colorado State University, 1582 Campus Delivery, Fort Collins, CO, 80523, USA
- Columbine Health Systems Center for Healthy Aging, Colorado State University, Fort Collins, CO, USA
| | - Sydney J Risen
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, USA
- Brain Research Center, Colorado State University, Fort Collins, CO, USA
| | - Shelby C Osburn
- Department of Health and Exercise Science, Colorado State University, 1582 Campus Delivery, Fort Collins, CO, 80523, USA
- Columbine Health Systems Center for Healthy Aging, Colorado State University, Fort Collins, CO, USA
| | - Tobias Emge
- Department of Health and Exercise Science, Colorado State University, 1582 Campus Delivery, Fort Collins, CO, 80523, USA
- Columbine Health Systems Center for Healthy Aging, Colorado State University, Fort Collins, CO, USA
| | - Sadhana Sharma
- Sachi Bio, Colorado Technology Center, Louisville, CO, USA
| | | | | | | | - Julie A Moreno
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, USA
- Brain Research Center, Colorado State University, Fort Collins, CO, USA
| | - Thomas J LaRocca
- Department of Health and Exercise Science, Colorado State University, 1582 Campus Delivery, Fort Collins, CO, 80523, USA.
- Columbine Health Systems Center for Healthy Aging, Colorado State University, Fort Collins, CO, USA.
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40
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van Baarle L, De Simone V, Schneider L, Santhosh S, Abdurahiman S, Biscu F, Schneider R, Zanoletti L, Siqueira de Mello R, Verbandt S, Hu Z, Stakenborg M, Ke BJ, Stakenborg N, Salvador Laureano R, García-Reyes B, Henn J, Toma M, Vanmechelen M, Boeckxstaens G, De Smet F, Garg AD, Ibiza S, Tejpar S, Wehner S, Matteoli G. IL-1R signaling drives enteric glia-macrophage interactions in colorectal cancer. Nat Commun 2024; 15:6079. [PMID: 39030280 PMCID: PMC11271635 DOI: 10.1038/s41467-024-50438-2] [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: 09/16/2023] [Accepted: 07/11/2024] [Indexed: 07/21/2024] Open
Abstract
Enteric glia have been recently recognized as key components of the colonic tumor microenvironment indicating their potential role in colorectal cancer pathogenesis. Although enteric glia modulate immune responses in other intestinal diseases, their interaction with the colorectal cancer immune cell compartment remains unclear. Through a combination of single-cell and bulk RNA-sequencing, both in murine models and patients, here we find that enteric glia acquire an immunomodulatory phenotype by bi-directional communication with tumor-infiltrating monocytes. The latter direct a reactive enteric glial cell phenotypic and functional switch via glial IL-1R signaling. In turn, tumor glia promote monocyte differentiation towards pro-tumorigenic SPP1+ tumor-associated macrophages by IL-6 release. Enteric glia cell abundancy correlates with worse disease outcomes in preclinical models and colorectal cancer patients. Thereby, our study reveals a neuroimmune interaction between enteric glia and tumor-associated macrophages in the colorectal tumor microenvironment, providing insights into colorectal cancer pathogenesis.
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Affiliation(s)
- Lies van Baarle
- Laboratory of Mucosal Immunology, Department of Chronic Diseases and Metabolism (CHROMETA), Translational Research Center for Gastrointestinal Disorders (TARGID), KU Leuven, Leuven, Belgium
| | - Veronica De Simone
- Laboratory of Mucosal Immunology, Department of Chronic Diseases and Metabolism (CHROMETA), Translational Research Center for Gastrointestinal Disorders (TARGID), KU Leuven, Leuven, Belgium
| | - Linda Schneider
- Department of Surgery, University Hospital Bonn, Medical Faculty, Bonn, Germany
| | - Sneha Santhosh
- Laboratory of Mucosal Immunology, Department of Chronic Diseases and Metabolism (CHROMETA), Translational Research Center for Gastrointestinal Disorders (TARGID), KU Leuven, Leuven, Belgium
- Department of Anatomy and Physiology, University of Melbourne, Parkville, VIC, Australia
| | - Saeed Abdurahiman
- Laboratory of Mucosal Immunology, Department of Chronic Diseases and Metabolism (CHROMETA), Translational Research Center for Gastrointestinal Disorders (TARGID), KU Leuven, Leuven, Belgium
| | - Francesca Biscu
- Laboratory of Mucosal Immunology, Department of Chronic Diseases and Metabolism (CHROMETA), Translational Research Center for Gastrointestinal Disorders (TARGID), KU Leuven, Leuven, Belgium
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, UK
| | - Reiner Schneider
- Department of Surgery, University Hospital Bonn, Medical Faculty, Bonn, Germany
| | - Lisa Zanoletti
- Laboratory of Mucosal Immunology, Department of Chronic Diseases and Metabolism (CHROMETA), Translational Research Center for Gastrointestinal Disorders (TARGID), KU Leuven, Leuven, Belgium
- Department of Biology and Biotechnology "L. Spallanzani", University of Pavia, Pavia, Italy
| | - Renata Siqueira de Mello
- Laboratory of Mucosal Immunology, Department of Chronic Diseases and Metabolism (CHROMETA), Translational Research Center for Gastrointestinal Disorders (TARGID), KU Leuven, Leuven, Belgium
| | - Sara Verbandt
- Digestive Oncology, Department of Oncology, KU Leuven, Leuven, Belgium
| | - Zedong Hu
- Digestive Oncology, Department of Oncology, KU Leuven, Leuven, Belgium
| | - Michelle Stakenborg
- Laboratory of Mucosal Immunology, Department of Chronic Diseases and Metabolism (CHROMETA), Translational Research Center for Gastrointestinal Disorders (TARGID), KU Leuven, Leuven, Belgium
| | - Bo-Jun Ke
- Laboratory of Mucosal Immunology, Department of Chronic Diseases and Metabolism (CHROMETA), Translational Research Center for Gastrointestinal Disorders (TARGID), KU Leuven, Leuven, Belgium
| | - Nathalie Stakenborg
- Laboratory for Intestinal Neuro-Immune Interaction, Department of Chronic Diseases and Metabolism (CHROMETA), Translational Research Center for Gastrointestinal Disorders (TARGID), KU Leuven, Leuven, Belgium
| | - Raquel Salvador Laureano
- Cell Stress and Immunity (CSI) Lab, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Balbina García-Reyes
- Department of Surgery, University Hospital Bonn, Medical Faculty, Bonn, Germany
- Mildred Scheel School of Oncology, Aachen Bonn Cologne Düsseldorf (MSSO ABCD), University Hospital Bonn, Medical Faculty, Bonn, Germany
| | - Jonas Henn
- Department of Surgery, University Hospital Bonn, Medical Faculty, Bonn, Germany
| | - Marieta Toma
- Department of Pathology, University Hospital Bonn, Medical Faculty, Bonn, Germany
| | - Maxime Vanmechelen
- Translational Cell and Tissue Research Unit, Department of Imaging & Pathology, Laboratory for Precision Cancer Medicine, KU Leuven, Leuven, Belgium
- Leuven Institute for Single-Cell Omics (LISCO), KU Leuven, Leuven, Belgium
| | - Guy Boeckxstaens
- Laboratory for Intestinal Neuro-Immune Interaction, Department of Chronic Diseases and Metabolism (CHROMETA), Translational Research Center for Gastrointestinal Disorders (TARGID), KU Leuven, Leuven, Belgium
| | - Frederik De Smet
- Translational Cell and Tissue Research Unit, Department of Imaging & Pathology, Laboratory for Precision Cancer Medicine, KU Leuven, Leuven, Belgium
- Leuven Institute for Single-Cell Omics (LISCO), KU Leuven, Leuven, Belgium
| | - Abhishek D Garg
- Cell Stress and Immunity (CSI) Lab, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Sales Ibiza
- Laboratory of Cell Biology & Histology, Department of Veterinary Sciences, University of Antwerp, Antwerp, Belgium
| | - Sabine Tejpar
- Digestive Oncology, Department of Oncology, KU Leuven, Leuven, Belgium
| | - Sven Wehner
- Department of Surgery, University Hospital Bonn, Medical Faculty, Bonn, Germany.
| | - Gianluca Matteoli
- Laboratory of Mucosal Immunology, Department of Chronic Diseases and Metabolism (CHROMETA), Translational Research Center for Gastrointestinal Disorders (TARGID), KU Leuven, Leuven, Belgium.
- Leuven Institute for Single-Cell Omics (LISCO), KU Leuven, Leuven, Belgium.
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41
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Kim M, Oh S, Kim S, Kim IS, Kim J, Han J, Ahn JW, Chung S, Jang JH, Shin JE, Park KI. In vivo neural regeneration via AAV-NeuroD1 gene delivery to astrocytes in neonatal hypoxic-ischemic brain injury. Inflamm Regen 2024; 44:33. [PMID: 39014391 PMCID: PMC11253351 DOI: 10.1186/s41232-024-00349-y] [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: 03/26/2024] [Accepted: 07/06/2024] [Indexed: 07/18/2024] Open
Abstract
BACKGROUND Neonatal hypoxic-ischemic brain injury (HIBI) is a significant contributor to neonatal mortality and long-term neurodevelopmental disability, characterized by massive neuronal loss and reactive astrogliosis. Current therapeutic approaches for neonatal HIBI have been limited to general supportive therapy because of the lack of methods to compensate for irreversible neuronal loss. This study aimed to establish a feasible regenerative therapy for neonatal HIBI utilizing in vivo direct neuronal reprogramming technology. METHODS Neonatal HIBI was induced in ICR mice at postnatal day 7 by permanent right common carotid artery occlusion and exposure to hypoxia with 8% oxygen and 92% nitrogen for 90 min. Three days after the injury, NeuroD1 was delivered to reactive astrocytes of the injury site using the astrocyte-tropic adeno-associated viral (AAV) vector AAVShH19. AAVShH19 was engineered with the Cre-FLEX system for long-term tracking of infected cells. RESULTS AAVShH19-mediated ectopic NeuroD1 expression effectively converted astrocytes into GABAergic neurons, and the converted cells exhibited electrophysiological properties and synaptic transmitters. Additionally, we found that NeuroD1-mediated in vivo direct neuronal reprogramming protected injured host neurons and altered the host environment, i.e., decreased the numbers of activated microglia, reactive astrocytes, and toxic A1-type astrocytes, and decreased the expression of pro-inflammatory factors. Furthermore, NeuroD1-treated mice exhibited significantly improved motor functions. CONCLUSIONS This study demonstrates that NeuroD1-mediated in vivo direct neuronal reprogramming technology through AAV gene delivery can be a novel regenerative therapy for neonatal HIBI.
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Affiliation(s)
- Miri Kim
- Yonsei Biomedical Research Institute, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
- Department of Pediatrics, Severance Children's Hospital, Yonsei University College of Medicine, 50-1 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722, Republic of Korea
| | - Seokmin Oh
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Songyeon Kim
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Il-Sun Kim
- Yonsei Biomedical Research Institute, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Joowon Kim
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Jungho Han
- Department of Pediatrics, Severance Children's Hospital, Yonsei University College of Medicine, 50-1 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722, Republic of Korea
| | - Ji Woong Ahn
- BnH Research. Co., Ltd. Goyang-Si, Gyeonggi-Do, Republic of Korea
| | - Seungsoo Chung
- Department of Physiology, Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jae-Hyung Jang
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, 03722, Republic of Korea
- GluGene Therapeutics Inc., Seoul, Republic of Korea
| | - Jeong Eun Shin
- Yonsei Biomedical Research Institute, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea.
- Department of Pediatrics, Severance Children's Hospital, Yonsei University College of Medicine, 50-1 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722, Republic of Korea.
| | - Kook In Park
- Yonsei Biomedical Research Institute, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
- Department of Pediatrics, Severance Children's Hospital, Yonsei University College of Medicine, 50-1 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722, Republic of Korea
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42
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Jay TR, Kang Y, Ouellet-Massicotte V, Micael MKB, Kacouros-Perkins VL, Chen J, Sheehan A, Freeman MR. Developmental and age-related synapse elimination is mediated by glial Croquemort. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.24.600214. [PMID: 39026803 PMCID: PMC11257470 DOI: 10.1101/2024.06.24.600214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
Neurons and glia work together to dynamically regulate neural circuit assembly and maintenance. In this study, we show Drosophila exhibit large-scale synapse formation and elimination as part of normal CNS circuit maturation, and that glia use conserved molecules to regulate these processes. Using a high throughput ELISA-based in vivo screening assay, we identify new glial genes that regulate synapse numbers in Drosophila in vivo, including the scavenger receptor ortholog Croquemort (Crq). Crq acts as an essential regulator of glial-dependent synapse elimination during development, with glial Crq loss leading to excess CNS synapses and progressive seizure susceptibility in adults. Loss of Crq in glia also prevents age-related synaptic loss in the adult brain. This work provides new insights into the cellular and molecular mechanisms that underlie synapse development and maintenance across the lifespan, and identifies glial Crq as a key regulator of these processes.
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43
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Kumar Nelson V, Jha NK, Nuli MV, Gupta S, Kanna S, Gahtani RM, Hani U, Singh AK, Abomughaid MM, Abomughayedh AM, Almutary AG, Iqbal D, Al Othaim A, Begum SS, Ahmad F, Mishra PC, Jha SK, Ojha S. Unveiling the impact of aging on BBB and Alzheimer's disease: Factors and therapeutic implications. Ageing Res Rev 2024; 98:102224. [PMID: 38346505 DOI: 10.1016/j.arr.2024.102224] [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: 08/29/2023] [Revised: 02/01/2024] [Accepted: 02/03/2024] [Indexed: 05/12/2024]
Abstract
Alzheimer's disease (AD) is a highly prevalent neurodegenerative condition that has devastating effects on individuals, often resulting in dementia. AD is primarily defined by the presence of extracellular plaques containing insoluble β-amyloid peptide (Aβ) and neurofibrillary tangles (NFTs) composed of hyperphosphorylated tau protein (P-tau). In addition, individuals afflicted by these age-related illnesses experience a diminished state of health, which places significant financial strain on their loved ones. Several risk factors play a significant role in the development of AD. These factors include genetics, diet, smoking, certain diseases (such as cerebrovascular diseases, obesity, hypertension, and dyslipidemia), age, and alcohol consumption. Age-related factors are key contributors to the development of vascular-based neurodegenerative diseases such as AD. In general, the process of aging can lead to changes in the immune system's responses and can also initiate inflammation in the brain. The chronic inflammation and the inflammatory mediators found in the brain play a crucial role in the dysfunction of the blood-brain barrier (BBB). Furthermore, maintaining BBB integrity is of utmost importance in preventing a wide range of neurological disorders. Therefore, in this review, we discussed the role of age and its related factors in the breakdown of the blood-brain barrier and the development of AD. We also discussed the importance of different compounds, such as those with anti-aging properties, and other compounds that can help maintain the integrity of the blood-brain barrier in the prevention of AD. This review builds a strong correlation between age-related factors, degradation of the BBB, and its impact on AD.
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Affiliation(s)
- Vinod Kumar Nelson
- Raghavendra Institute of Pharmaceutical Education and Research, Anantapur, India.
| | - Niraj Kumar Jha
- Centre for Global Health Research, Saveetha Medical College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India; Centre of Research Impact and Outcome, Chitkara University, Rajpura 140401, Punjab, India; School of Bioengineering & Biosciences, Lovely Professional University, Phagwara 144411, India; Department of Biotechnology Engineering and Food Technology, Chandigarh University, Mohali, India.
| | - Mohana Vamsi Nuli
- Raghavendra Institute of Pharmaceutical Education and Research, Anantapur, India
| | - Saurabh Gupta
- Department of Biotechnology, GLA University, Mathura, Uttar Pradesh, India
| | - Sandeep Kanna
- Department of pharmaceutics, Chalapathi Institute of Pharmaceutical Sciences, Chalapathi Nagar, Guntur 522034, India
| | - Reem M Gahtani
- Departement of Clinical Laboratory Sciences, King Khalid University, Abha, Saudi Arabia
| | - Umme Hani
- Department of pharmaceutics, College of Pharmacy, King Khalid University, Abha, Saudi Arabia
| | - Arun Kumar Singh
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology BHU, Varanasi, Uttar Pradesh, India
| | - Mosleh Mohammad Abomughaid
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, University of Bisha, Bisha 61922, Saudi Arabia
| | - Ali M Abomughayedh
- Pharmacy Department, Aseer Central Hospital, Ministry of Health, Saudi Arabia
| | - Abdulmajeed G Almutary
- Department of Biomedical Sciences, College of Health Sciences, Abu Dhabi University, Abu Dhabi, P.O. Box 59911, United Arab Emirates
| | - Danish Iqbal
- Department of Health Information Management, College of Applied Medical Sciences, Buraydah Private Colleges, Buraydah 51418, Saudi Arabia
| | - Ayoub Al Othaim
- Department of Medical Laboratory Sciences, College of Applied Medical Science, Majmaah University, Al-Majmaah 11952, Saudi Arabia.
| | - S Sabarunisha Begum
- Department of Biotechnology, P.S.R. Engineering College, Sivakasi 626140, India
| | - Fuzail Ahmad
- Respiratory Care Department, College of Applied Sciences, Almaarefa University, Diriya, Riyadh, 13713, Saudi Arabia
| | - Prabhu Chandra Mishra
- Department of Biotechnology, School of Engineering and Technology, Sharda University, Greater Noida, India
| | - Saurabh Kumar Jha
- Department of Zoology, Kalindi College, University of Delhi, 110008, India.
| | - Shreesh Ojha
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, P.O. Box 15551, United Arab Emirates
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Liddelow SA, Olsen ML, Sofroniew MV. Reactive Astrocytes and Emerging Roles in Central Nervous System (CNS) Disorders. Cold Spring Harb Perspect Biol 2024; 16:a041356. [PMID: 38316554 PMCID: PMC11216178 DOI: 10.1101/cshperspect.a041356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
In addition to their many functions in the healthy central nervous system (CNS), astrocytes respond to CNS damage and disease through a process called "reactivity." Recent evidence reveals that astrocyte reactivity is a heterogeneous spectrum of potential changes that occur in a context-specific manner. These changes are determined by diverse signaling events and vary not only with the nature and severity of different CNS insults but also with location in the CNS, genetic predispositions, age, and potentially also with "molecular memory" of previous reactivity events. Astrocyte reactivity can be associated with both essential beneficial functions as well as with harmful effects. The available information is rapidly expanding and much has been learned about molecular diversity of astrocyte reactivity. Emerging functional associations point toward central roles for astrocyte reactivity in determining the outcome in CNS disorders.
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Affiliation(s)
- Shane A Liddelow
- Neuroscience Institute, NYU School of Medicine, New York, New York 10016, USA
- Department of Neuroscience and Physiology, NYU School of Medicine, New York, New York 10016, USA
- Department of Ophthalmology, NYU School of Medicine, New York, New York 10016, USA
| | - Michelle L Olsen
- School of Neuroscience, Virginia Tech, Blacksburg, Virginia 24061, USA
| | - Michael V Sofroniew
- Department of Neurobiology, David Geffen School of Medicine, University of California, Los Angeles, California 90095, USA
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45
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Santana NNM, Silva EHA, Santos SFD, Bezerra LLF, da Silva MMO, Cavalcante JS, Fiuza FP, Morais PLADG, Engelberth RC. Neuronal Stability, Volumetric Changes, and Decrease in GFAP Expression of Marmoset (Callithrix jacchus) Subcortical Visual Nuclei During Aging. J Comp Neurol 2024; 532:e25649. [PMID: 38967410 DOI: 10.1002/cne.25649] [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: 12/14/2023] [Revised: 05/06/2024] [Accepted: 05/30/2024] [Indexed: 07/06/2024]
Abstract
The physiological aging process is well known for functional decline in visual abilities. Among the components of the visual system, the dorsal lateral geniculate nucleus (DLG) and superior colliculus (SC) provide a good model for aging investigations, as these structures constitute the main visual pathways for retinal inputs reaching the visual cortex. However, there are limited data available on quantitative morphological and neurochemical aspects in DLG and SC across lifespan. Here, we used optical density to determine immunoexpression of glial fibrillary acidic protein (GFAP) and design-based stereological probes to estimate the neuronal number, total volume, and layer volume of the DLG and SC in marmosets (Callithrix jacchus), ranging from 36 to 143 months of age. Our results revealed an age-related increase in total volume and layer volume of the DLG, with an overall stability in SC volume. Furthermore, a stable neuronal number was demonstrated in DLG and superficial layers of SC (SCv). A decrease in GFAP immunoexpression was observed in both visual centers. The results indicate region-specific variability in volumetric parameter, possibly attributed to structural plastic events in response to inflammation and compensatory mechanisms at the cellular and subcellular level. Additionally, the DLG and SCv seem to be less vulnerable to aging effects in terms of neuronal number. The neuropeptidergic data suggest that reduced GFAP expression may reflect morphological atrophy in the astroglial cells. This study contributes to updating the current understanding of aging effects in the visual system and stablishes a crucial foundation for future research on visual perception throughout the aging process.
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Affiliation(s)
- Nelyane N M Santana
- Edmond and Lily Safra International Institute of Neuroscience, Santos Dumont Institute, Macaíba, Brazil
| | - Eryck H A Silva
- Laboratory of Neurochemical Studies, Department of Physiology and Behavior, Bioscience Center, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Sâmarah F Dos Santos
- Laboratory of Neurochemical Studies, Department of Physiology and Behavior, Bioscience Center, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Lyzandro L F Bezerra
- Laboratory of Neurochemical Studies, Department of Physiology and Behavior, Bioscience Center, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Maria M O da Silva
- Laboratory of Neurochemical Studies, Department of Physiology and Behavior, Bioscience Center, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Jeferson S Cavalcante
- Laboratory of Neurochemical Studies, Department of Physiology and Behavior, Bioscience Center, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Felipe P Fiuza
- Edmond and Lily Safra International Institute of Neuroscience, Santos Dumont Institute, Macaíba, Brazil
| | - Paulo L A de G Morais
- Laboratory of Experimental Neurology, College of the Health Sciences, University of the State of Rio Grande do Norte, Mossoró, Brazil
| | - Rovena Clara Engelberth
- Laboratory of Neurochemical Studies, Department of Physiology and Behavior, Bioscience Center, Federal University of Rio Grande do Norte, Natal, Brazil
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Zuo HJ, Ren XQ, Shi JS, Shi HL, Guo K, Wang PX, Zhao M, Li JJ. Gastrodin regulates the expression of renin-angiotensin system-SIRT3 and proinflammatory mediators in reactive astrocytes via activated microglia. Eur J Neurosci 2024; 60:3677-3693. [PMID: 38711280 DOI: 10.1111/ejn.16371] [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: 12/11/2022] [Revised: 03/19/2024] [Accepted: 04/11/2024] [Indexed: 05/08/2024]
Abstract
Gastrodin, an anti-inflammatory herbal agent, is known to suppress microglia activation. Here, we investigated whether it would exert a similar effect in reactive astrocytes and whether it might act through the renin-angiotensin system (RAS) and sirtuin 3 (SIRT3). Angiotensinogen (ATO), angiotensin-converting enzyme (ACE), angiotensin II type 1 (AT1) and type 2 (AT2) receptor and SIRT3 expression was detected in TNC-1 astrocytes treated with BV-2 microglia conditioned medium (CM) with or without gastrodin and lipopolysaccharide (LPS) pre-treatment by RT-PCR, immunofluorescence and western blotting analysis. Expression of C3 (A1 astrocyte marker), S100A10 (A2 astrocyte marker), proinflammatory cytokines and neurotrophic factors was then evaluated. The results showed a significant increase of ATO, ACE, AT1, SIRT3, C3, proinflammatory cytokines and neurotrophic factors expression in TNC-1 astrocytes incubated in CM + LPS when compared with cells incubated in the CM, but AT2 and S100A10 expression was reduced. TNC-1 astrocytes responded vigorously to BV-2 CM treated with gastrodin + LPS as compared with the control. This was evident by the decreased expression of the abovementioned protein markers, except for AT2 and S100A10. Interestingly, SIRT3, IGF-1 and BDNF expression was enhanced, suggesting that gastrodin inhibited the expression of RAS and proinflammatory mediators but promoted the expression of neurotrophic factors. And gastrodin regulated the phenotypic changes of astrocytes through AT1. Additionally, azilsartan (a specific inhibitor of AT1) inhibited the expression of C3 and S100A10, which remained unaffected in gastrodin and azilsartan combination treatment. These findings provide evidence that gastrodin may have a therapeutic effect via regulating RAS-SIRT3.
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Affiliation(s)
- Han-Jun Zuo
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Sciences, Kunming Medical University, Kunming, China
| | - Xue-Qi Ren
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Sciences, Kunming Medical University, Kunming, China
| | - Jin-Sha Shi
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Sciences, Kunming Medical University, Kunming, China
| | - Hao-Long Shi
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Sciences, Kunming Medical University, Kunming, China
| | - Kun Guo
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Sciences, Kunming Medical University, Kunming, China
| | - Peng-Xiang Wang
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Sciences, Kunming Medical University, Kunming, China
| | - Min Zhao
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Sciences, Kunming Medical University, Kunming, China
| | - Juan-Juan Li
- Department of Anatomy and Histology & Embryology, Faculty of Basic Medical Sciences, Kunming Medical University, Kunming, China
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47
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Zhang L, Yin Z, Liu X, Jin G, Wang Y, He L, Li M, Pang X, Yan B, Jia Z, Ma J, Wei J, Cheng F, Li D, Wang L, Han Z, Liu Q, Chen F, Cao H, Lei P. Dietary emulsifier polysorbate 80 exposure accelerates age-related cognitive decline. Brain Behav Immun 2024; 119:171-187. [PMID: 38565398 DOI: 10.1016/j.bbi.2024.03.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 03/26/2024] [Accepted: 03/30/2024] [Indexed: 04/04/2024] Open
Abstract
Gut microbial homeostasis is crucial for the health of cognition in elderly. Previous study revealed that polysorbate 80 (P80) as a widely used emulsifier in food industries and pharmaceutical formulations could directly alter the human gut microbiota compositions. However, whether long-term exposure to P80 could accelerate age-related cognitive decline via gut-brain axis is still unknown. Accordingly, in this study, we used the senescence accelerated mouse prone 8 (SAMP8) mouse model to investigate the effects of the emulsifier P80 intake (1 % P80 in drinking water for 12 weeks) on gut microbiota and cognitive function. Our results indicated that P80 intake significantly exacerbated cognitive decline in SAMP8 mice, along with increased brain pathological proteins deposition, disruption of the blood-brain barrier and activation of microglia and neurotoxic astrocytes. Besides, P80 intake could also induce gut microbiota dysbiosis, especially the increased abundance of secondary bile acids producing bacteria, such as Ruminococcaceae, Lachnospiraceae, and Clostridium scindens. Moreover, fecal microbiota transplantation from P80 mice into 16-week-old SAMP8 mice could also exacerbated cognitive decline, microglia activation and intestinal barrier impairment. Intriguingly, the alterations of gut microbial composition significantly affected bile acid metabolism profiles after P80 exposure, with markedly elevated levels of deoxycholic acid (DCA) in serum and brain tissue. Mechanically, DCA could activate microglial and promote senescence-associated secretory phenotype production through adenosine triphosphate-binding cassette transporter A1 (ABCA1) importing lysosomal cholesterol. Altogether, the emulsifier P80 accelerated cognitive decline of aging mice by inducing gut dysbiosis, bile acid metabolism alteration, intestinal barrier and blood brain barrier disruption as well as neuroinflammation. This study provides strong evidence that dietary-induced gut microbiota dysbiosis may be a risk factor for age-related cognitive decline.
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Affiliation(s)
- Lan Zhang
- Haihe Laboratory of Cell Ecosystem, Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China; Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Zhenyu Yin
- Haihe Laboratory of Cell Ecosystem, Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China; Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Xilei Liu
- Tianjin Neurological Institution, Tianjin Medical University General Hospital, Tianjin, China
| | - Ge Jin
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Yan Wang
- Haihe Laboratory of Cell Ecosystem, Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China; Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Linlin He
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Meimei Li
- Haihe Laboratory of Cell Ecosystem, Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China; Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Xiaoqi Pang
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Bo Yan
- Haihe Laboratory of Cell Ecosystem, Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China; Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Zexi Jia
- Haihe Laboratory of Cell Ecosystem, Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China; Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Jiahui Ma
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Jingge Wei
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Fangyuan Cheng
- Haihe Laboratory of Cell Ecosystem, Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China; Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Dai Li
- Haihe Laboratory of Cell Ecosystem, Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China; Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Lu Wang
- Haihe Laboratory of Cell Ecosystem, Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China; Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Zhaoli Han
- Haihe Laboratory of Cell Ecosystem, Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China; Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Qiang Liu
- Department of Neurology, Aging and Neurodegenerative Disease Laboratory, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Fanglian Chen
- Tianjin Neurological Institution, Tianjin Medical University General Hospital, Tianjin, China.
| | - Hailong Cao
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China.
| | - Ping Lei
- Haihe Laboratory of Cell Ecosystem, Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China; Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Tianjin, China.
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Sriram S, Carstens K, Dewing W, Fiacco TA. Astrocyte regulation of extracellular space parameters across the sleep-wake cycle. Front Cell Neurosci 2024; 18:1401698. [PMID: 38988660 PMCID: PMC11233815 DOI: 10.3389/fncel.2024.1401698] [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: 03/15/2024] [Accepted: 06/07/2024] [Indexed: 07/12/2024] Open
Abstract
Multiple subfields of neuroscience research are beginning to incorporate astrocytes into current frameworks of understanding overall brain physiology, neuronal circuitry, and disease etiology that underlie sleep and sleep-related disorders. Astrocytes have emerged as a dynamic regulator of neuronal activity through control of extracellular space (ECS) volume and composition, both of which can vary dramatically during different levels of sleep and arousal. Astrocytes are also an attractive target of sleep research due to their prominent role in the glymphatic system, a method by which toxic metabolites generated during wakefulness are cleared away. In this review we assess the literature surrounding glial influences on fluctuations in ECS volume and composition across the sleep-wake cycle. We also examine mechanisms of astrocyte volume regulation in glymphatic solute clearance and their role in sleep and wake states. Overall, findings highlight the importance of astrocytes in sleep and sleep research.
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Affiliation(s)
- Sandhya Sriram
- Interdepartmental Graduate Program in Neuroscience, University of California, Riverside, Riverside, CA, United States
- Department of Biochemistry and Molecular Biology, University of California, Riverside, Riverside, CA, United States
| | - Kaira Carstens
- Department of Biochemistry and Molecular Biology, University of California, Riverside, Riverside, CA, United States
| | - Wayne Dewing
- Undergraduate Major in Neuroscience, University of California, Riverside, Riverside, CA, United States
| | - Todd A Fiacco
- Interdepartmental Graduate Program in Neuroscience, University of California, Riverside, Riverside, CA, United States
- Department of Biochemistry and Molecular Biology, University of California, Riverside, Riverside, CA, United States
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49
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Mallach A, Zielonka M, van Lieshout V, An Y, Khoo JH, Vanheusden M, Chen WT, Moechars D, Arancibia-Carcamo IL, Fiers M, De Strooper B. Microglia-astrocyte crosstalk in the amyloid plaque niche of an Alzheimer's disease mouse model, as revealed by spatial transcriptomics. Cell Rep 2024; 43:114216. [PMID: 38819990 DOI: 10.1016/j.celrep.2024.114216] [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: 06/20/2023] [Revised: 02/02/2024] [Accepted: 04/25/2024] [Indexed: 06/02/2024] Open
Abstract
The amyloid plaque niche is a pivotal hallmark of Alzheimer's disease (AD). Here, we employ two high-resolution spatial transcriptomics (ST) platforms, CosMx and Spatial Enhanced Resolution Omics-sequencing (Stereo-seq), to characterize the transcriptomic alterations, cellular compositions, and signaling perturbations in the amyloid plaque niche in an AD mouse model. We discover heterogeneity in the cellular composition of plaque niches, marked by an increase in microglial accumulation. We profile the transcriptomic alterations of glial cells in the vicinity of plaques and conclude that the microglial response to plaques is consistent across different brain regions, while the astrocytic response is more heterogeneous. Meanwhile, as the microglial density of plaque niches increases, astrocytes acquire a more neurotoxic phenotype and play a key role in inducing GABAergic signaling and decreasing glutamatergic signaling in hippocampal neurons. We thus show that the accumulation of microglia around hippocampal plaques disrupts astrocytic signaling, in turn inducing an imbalance in neuronal synaptic signaling.
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Affiliation(s)
- Anna Mallach
- UK Dementia Research Institute at UCL, University College London, London WC1E 6BT, UK; The Francis Crick Institute, London NW1 1AT, UK; Department of Neurosciences and Leuven Brain Institute, KU Leuven, Leuven, Belgium
| | - Magdalena Zielonka
- Department of Neurosciences and Leuven Brain Institute, KU Leuven, Leuven, Belgium; Laboratory for the Research of Neurodegenerative Diseases, VIB Center for Brain & Disease Research, VIB, Leuven, Belgium
| | - Veerle van Lieshout
- Department of Neurosciences and Leuven Brain Institute, KU Leuven, Leuven, Belgium; Laboratory for the Research of Neurodegenerative Diseases, VIB Center for Brain & Disease Research, VIB, Leuven, Belgium
| | - Yanru An
- BGI Research, 49276 Riga, Latvia
| | | | - Marisa Vanheusden
- Department of Neurosciences and Leuven Brain Institute, KU Leuven, Leuven, Belgium; Laboratory for the Research of Neurodegenerative Diseases, VIB Center for Brain & Disease Research, VIB, Leuven, Belgium; Discovery Biology, Muna Therapeutics, Leuven, Belgium
| | - Wei-Ting Chen
- Department of Neurosciences and Leuven Brain Institute, KU Leuven, Leuven, Belgium; Laboratory for the Research of Neurodegenerative Diseases, VIB Center for Brain & Disease Research, VIB, Leuven, Belgium; Discovery Biology, Muna Therapeutics, Leuven, Belgium
| | - Daan Moechars
- Department of Neurosciences and Leuven Brain Institute, KU Leuven, Leuven, Belgium; Laboratory for the Research of Neurodegenerative Diseases, VIB Center for Brain & Disease Research, VIB, Leuven, Belgium
| | - I Lorena Arancibia-Carcamo
- UK Dementia Research Institute at UCL, University College London, London WC1E 6BT, UK; The Francis Crick Institute, London NW1 1AT, UK
| | - Mark Fiers
- UK Dementia Research Institute at UCL, University College London, London WC1E 6BT, UK; The Francis Crick Institute, London NW1 1AT, UK; Department of Neurosciences and Leuven Brain Institute, KU Leuven, Leuven, Belgium; Laboratory for the Research of Neurodegenerative Diseases, VIB Center for Brain & Disease Research, VIB, Leuven, Belgium; Department of Human Genetics, KU Leuven, Leuven, Belgium.
| | - Bart De Strooper
- UK Dementia Research Institute at UCL, University College London, London WC1E 6BT, UK; The Francis Crick Institute, London NW1 1AT, UK; Department of Neurosciences and Leuven Brain Institute, KU Leuven, Leuven, Belgium; Laboratory for the Research of Neurodegenerative Diseases, VIB Center for Brain & Disease Research, VIB, Leuven, Belgium.
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50
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Wu W, Alexander JS, Booth JL, Miller CA, Metcalf JP, Drevets DA. Influenza virus infection exacerbates gene expression related to neurocognitive dysfunction in brains of old mice. Immun Ageing 2024; 21:39. [PMID: 38907247 PMCID: PMC11191167 DOI: 10.1186/s12979-024-00447-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Accepted: 06/11/2024] [Indexed: 06/23/2024]
Abstract
BACKGROUND Age > 65 years is a key risk factor for poor outcomes after human influenza infection. Specifically, in addition to respiratory disease, non-neurotropic influenza A virus (IAV) causes neuro-cognitive complications, e.g. new onset depression and increases the risk of dementia after hospitalization. This study aimed to identify potential mechanisms of these effects by determining differences between young and old mice in brain gene expression in a mouse model of non-neurotropic IAV infection. METHODS Young (12 weeks) and old (70 weeks) C57Bl/6J mice were inoculated intranasally with 200 PFU H1N1 A/PR/34/8 (PR8) or sterile PBS (mock). Gene expression in lung and brain was measured by qRT-PCR and normalized to β-actin. Findings were confirmed using the nCounter Mouse Neuroinflammation Array (NanoString) and analyzed with nSolver 4.0 and Ingenuity Pathway Analysis (IPA, Qiagen). RESULTS IAV PR8 did not invade the central nervous system. Young and old mice differed significantly in brain gene expression at baseline and during non-neurotropic IAV infection. Expression of brain Ifnl, Irf7, and Tnf mRNAs was upregulated over baseline control at 3 days post-infection (p.i.) only in young mice, but old mice expressed more Ifnl than young mice 7 days p.i. Gene arrays showed down-regulation of the Epigenetic Regulation, Insulin Signaling, and Neurons and Neurotransmission pathways in old mice 3 days p.i. while young mice demonstrated no change or induction of these pathways at the same time point. IPA revealed marked baseline differences between old and young mice. Gene expression related to Cognitive Impairment, Memory Deficits and Learning worsened in old mice relative to young mice during IAV infection. Aged mice demonstrate more severe changes in gene expression related to memory loss and cognitive dysfunction by IPA. CONCLUSIONS These data suggest the genes and pathways related to learning and cognitive performance that were worse at baseline in old mice were further worsened by IAV infection, similar to old patients. Early events in the brain triggered by IAV infection portend downstream neurocognitive pathology in old adults.
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Affiliation(s)
- Wenxin Wu
- Pulmonary, Critical Care & Sleep Medicine, Department of Medicine, University of Oklahoma Health Sciences Center, Room 425, RP1 800 N. Research Pkwy, Oklahoma City, OK, 73104, USA
| | - Jeremy S Alexander
- Pulmonary, Critical Care & Sleep Medicine, Department of Medicine, University of Oklahoma Health Sciences Center, Room 425, RP1 800 N. Research Pkwy, Oklahoma City, OK, 73104, USA
| | - J Leland Booth
- Pulmonary, Critical Care & Sleep Medicine, Department of Medicine, University of Oklahoma Health Sciences Center, Room 425, RP1 800 N. Research Pkwy, Oklahoma City, OK, 73104, USA
| | - Craig A Miller
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University, Oklahoma State University, Stillwater, OK, USA
| | - Jordan P Metcalf
- Pulmonary, Critical Care & Sleep Medicine, Department of Medicine, University of Oklahoma Health Sciences Center, Room 425, RP1 800 N. Research Pkwy, Oklahoma City, OK, 73104, USA.
- Veterans Affairs Medical Center, Oklahoma City, OK, USA.
- Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
| | - Douglas A Drevets
- Infectious Diseases, Department of Medicine, University of Oklahoma Health Sciences Center, 800 Stanton L. Young, Suite 7300, Oklahoma City, OK, 73104, USA.
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