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Shao J, Deng Q, Feng S, Wu C, Liu X, Yang L. Role of astrocytes in Alzheimer's disease pathogenesis and the impact of exercise-induced remodeling. Biochem Biophys Res Commun 2024; 732:150418. [PMID: 39032410 DOI: 10.1016/j.bbrc.2024.150418] [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: 04/26/2024] [Revised: 07/11/2024] [Accepted: 07/16/2024] [Indexed: 07/23/2024]
Abstract
Alzheimer's disease (AD) is a prevalent and debilitating brain disorder that worsens progressively with age, characterized by cognitive decline and memory impairment. The accumulation of amyloid-beta (Aβ) leading to amyloid plaques and hyperphosphorylation of Tau, resulting in intracellular neurofibrillary tangles (NFTs), are primary pathological features of AD. Despite significant research investment and effort, therapies targeting Aβ and NFTs have proven limited in efficacy for treating or slowing AD progression. Consequently, there is a growing interest in non-invasive therapeutic strategies for AD prevention. Exercise, a low-cost and non-invasive intervention, has demonstrated promising neuroprotective potential in AD prevention. Astrocytes, among the most abundant glial cells in the brain, play essential roles in various physiological processes and are implicated in AD initiation and progression. Exercise delays pathological progression and mitigates cognitive dysfunction in AD by modulating astrocyte morphological and phenotypic changes and fostering crosstalk with other glial cells. This review aims to consolidate the current understanding of how exercise influences astrocyte dynamics in AD, with a focus on elucidating the molecular and cellular mechanisms underlying astrocyte remodeling. The review begins with an overview of the neuropathological changes observed in AD, followed by an examination of astrocyte dysfunction as a feature of the disease. Lastly, the review explores the potential therapeutic implications of exercise-induced astrocyte remodeling in the context of AD.
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Affiliation(s)
- Jie Shao
- Laboratory of Exercise and Neurobiology, School of Physical Education and Sports Science, South China Normal University, Guangzhou, 510006, China
| | - Qianting Deng
- Laboratory of Exercise and Neurobiology, School of Physical Education and Sports Science, South China Normal University, Guangzhou, 510006, China
| | - Shu Feng
- 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.
| | - Xiaocao Liu
- Laboratory of Exercise and Neurobiology, 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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2
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Ganz T, Fainstein N, Theotokis P, Elgavish S, Vardi-Yaakov O, Lachish M, Sofer L, Zveik O, Grigoriadis N, Ben-Hur T. Targeting CNS myeloid infiltrates provides neuroprotection in a progressive multiple sclerosis model. Brain Behav Immun 2024; 122:497-509. [PMID: 39179123 DOI: 10.1016/j.bbi.2024.08.032] [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: 02/21/2024] [Revised: 07/30/2024] [Accepted: 08/17/2024] [Indexed: 08/26/2024] Open
Abstract
Demyelination and axonal injury in chronic-progressive Multiple Sclerosis (MS) are presumed to be driven by a neurotoxic bystander effect of meningeal-based myeloid infiltrates. There is an unmet clinical need to attenuate disease progression in such forms of CNS-compartmentalized MS. The failure of systemic immune suppressive treatments has highlighted the need for neuroprotective and repair-inducing strategies. Here, we examined whether direct targeting of CNS myeloid cells and modulating their toxicity may prevent irreversible tissue injury in chronic immune-mediated demyelinating disease. To that end, we utilized the experimental autoimmune encephalomyelitis (EAE) model in Biozzi mice, a clinically relevant MS model. We continuously delivered intracerebroventricularly (ICV) a retinoic acid receptor alpha agonist (RARα), as a potent regulator of myeloid cells, in the chronic phase of EAE. We assessed disease severity and performed pathological evaluations, functional analyses of immune cells, and single-cell RNA sequencing on isolated spinal CD11b+ cells. Although initiating treatment in the chronic phase of the disease, the RARα agonist successfully improved clinical outcomes and prevented axonal loss. ICV RARα agonist treatment inhibited pro-inflammatory pathways and shifted CNS myeloid cells toward neuroprotective phenotypes without affecting peripheral infiltrating myeloid cell phenotypes, or peripheral immunity. The treatment regulated cell-death pathways across multiple myeloid cell populations and suppressed apoptosis, resulting in paradoxically marked increased neuroinflammatory infiltrates, consisting mainly of microglia and CNS / border-associated macrophages. This work establishes the notion of bystander neurotoxicity by CNS immune infiltrates in chronic demyelinating disease. Furthermore, it shows that targeting compartmentalized neuroinflammation by selective regulation of CNS myeloid cell toxicity and survival reduces irreversible tissue injury, and may serve as a novel disease-modifying approach.
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Affiliation(s)
- Tal Ganz
- Faculty of Medicine, Hebrew University of Jerusalem, Israel; The Department of Neurology, The Agnes Ginges Center for Human Neurogenetics, Hadassah - Hebrew University Medical Center, Jerusalem, Israel
| | - Nina Fainstein
- Faculty of Medicine, Hebrew University of Jerusalem, Israel; The Department of Neurology, The Agnes Ginges Center for Human Neurogenetics, Hadassah - Hebrew University Medical Center, Jerusalem, Israel
| | - Paschalis Theotokis
- Department of Neurology, AHEPA University Hospital, Aristotle University of Thessaloniki, Greece
| | - Sharona Elgavish
- Info-CORE, Bioinformatics Unit of the 1-CORE, Hebrew University of Jerusalem, Israel
| | - Oriya Vardi-Yaakov
- Info-CORE, Bioinformatics Unit of the 1-CORE, Hebrew University of Jerusalem, Israel; Department of Bioinformatics, Jerusalem College of Technology, Israel
| | - Marva Lachish
- Faculty of Medicine, Hebrew University of Jerusalem, Israel; The Department of Neurology, The Agnes Ginges Center for Human Neurogenetics, Hadassah - Hebrew University Medical Center, Jerusalem, Israel
| | - Lihi Sofer
- Faculty of Medicine, Hebrew University of Jerusalem, Israel; The Department of Neurology, The Agnes Ginges Center for Human Neurogenetics, Hadassah - Hebrew University Medical Center, Jerusalem, Israel
| | - Omri Zveik
- Faculty of Medicine, Hebrew University of Jerusalem, Israel; The Department of Neurology, The Agnes Ginges Center for Human Neurogenetics, Hadassah - Hebrew University Medical Center, Jerusalem, Israel
| | - Nikolaos Grigoriadis
- Department of Neurology, AHEPA University Hospital, Aristotle University of Thessaloniki, Greece
| | - Tamir Ben-Hur
- Faculty of Medicine, Hebrew University of Jerusalem, Israel; The Department of Neurology, The Agnes Ginges Center for Human Neurogenetics, Hadassah - Hebrew University Medical Center, Jerusalem, Israel.
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Shin JY, Cho BO, Park JH, Kang ES, Kim JH, Ha HY, Kim YS, Jang SI. Diospyros lotus leaf extract and its main component myricitrin inhibit itch‑related IL‑6 and IL‑31 by suppressing microglial inflammation and microglial‑mediated astrocyte activation. Mol Med Rep 2024; 30:178. [PMID: 39129303 PMCID: PMC11338241 DOI: 10.3892/mmr.2024.13303] [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: 05/14/2024] [Accepted: 07/11/2024] [Indexed: 08/13/2024] Open
Abstract
Diospyros lotus has been traditionally used in Asia for medicinal purposes, exhibiting a broad spectrum of pharmacological effects including antioxidant, neuroprotective and anti‑inflammatory properties. While the anti‑itch effect of D. lotus leaves has been reported, studies on the detailed mechanism of action in microglia and astrocytes, which are members of the central nervous system, have yet to be revealed. The present study aimed to investigate effects of D. lotus leaf extract (DLE) and its main component myricitrin (MC) on itch‑related cytokines and signaling pathways in lipopolysaccharide (LPS)‑stimulated microglia. The effect of DLE and MC on activation of astrocyte stimulated by microglia was also examined. Cytokine production was evaluated through reverse transcription PCR and western blot analysis. Signaling pathway was analyzed by performing western blotting and immunofluorescence staining. The effect of microglia on astrocytes activation was evaluated via western blotting for receptors, signaling molecules and itch mediators and confirmed through gene silencing using short interfering RNA. DLE and MC suppressed the production of itch‑related cytokine IL‑6 and IL‑31 in LPS‑stimulated microglia. These inhibitory effects were mediated through the blockade of NF‑κB, MAPK and JAK/STAT pathways. In astrocytes, stimulation by microglia promoted the expression of itch‑related molecules such as oncostatin M receptor, interleukin 31 receptor a, inositol 1,4,5‑trisphosphate receptor 1, lipocalin‑2 (LCN2), STAT3 and glial fibrillary acidic protein. However, DLE and MC significantly inhibited these receptors. Additionally, astrocytes stimulated by microglia with IL‑6, IL‑31, or both genes silenced did not show activation of LCN2 or STAT3. The findings of the present study demonstrated that DLE and MC could suppress pruritic activity in astrocytes induced by microglia‑derived IL‑6 and IL‑31. This suggested the potential of DLE and MC as functional materials capable of alleviating pruritus.
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Affiliation(s)
- Jae Young Shin
- Institute of Health and Science, Jeonju University, Jeonju-si, Jeollabuk-do 55069, Republic of Korea
- Department of Food Science and Technology, Jeonbuk National University, Jeonju-si, Jeollabuk-do 54896, Republic of Korea
| | - Byoung Ok Cho
- Institute of Health and Science, Jeonju University, Jeonju-si, Jeollabuk-do 55069, Republic of Korea
| | - Ji Hyeon Park
- Institute of Health and Science, Jeonju University, Jeonju-si, Jeollabuk-do 55069, Republic of Korea
| | - Eun Seo Kang
- Institute of Health and Science, Jeonju University, Jeonju-si, Jeollabuk-do 55069, Republic of Korea
| | - Jang Ho Kim
- Institute of Health and Science, Jeonju University, Jeonju-si, Jeollabuk-do 55069, Republic of Korea
| | - Hun Yong Ha
- Department of Pharmaceutical Science and Engineering, Seowon University, Cheongju-si, Chungcheongbuk-do 28674, Republic of Korea
| | - Young-Soo Kim
- Department of Food Science and Technology, Jeonbuk National University, Jeonju-si, Jeollabuk-do 54896, Republic of Korea
| | - Seon Il Jang
- Institute of Health and Science, Jeonju University, Jeonju-si, Jeollabuk-do 55069, Republic of Korea
- Department of Health Management, Jeonju University, Jeonju-si, Jeollabuk-do 55069, Republic of Korea
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4
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Ma Y, Qiao Y, Gao X. Potential role of hippocampal neurogenesis in spinal cord injury induced post-trauma depression. Neural Regen Res 2024; 19:2144-2156. [PMID: 38488549 PMCID: PMC11034606 DOI: 10.4103/1673-5374.392855] [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: 05/11/2023] [Revised: 11/02/2023] [Accepted: 11/29/2023] [Indexed: 04/24/2024] Open
Abstract
It has been reported both in clinic and rodent models that beyond spinal cord injury directly induced symptoms, such as paralysis, neuropathic pain, bladder/bowel dysfunction, and loss of sexual function, there are a variety of secondary complications, including memory loss, cognitive decline, depression, and Alzheimer's disease. The large-scale longitudinal population-based studies indicate that post-trauma depression is highly prevalent in spinal cord injury patients. Yet, few basic studies have been conducted to address the potential molecular mechanisms. One of possible factors underlying the depression is the reduction of adult hippocampal neurogenesis which may come from less physical activity, social isolation, chronic pain, and elevated neuroinflammation after spinal cord injury. However, there is no clear consensus yet. In this review, we will first summarize the alteration of hippocampal neurogenesis post-spinal cord injury. Then, we will discuss possible mechanisms underlie this important spinal cord injury consequence. Finally, we will outline the potential therapeutic options aimed at enhancing hippocampal neurogenesis to ameliorate depression.
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Affiliation(s)
- Ying Ma
- Spinal Cord and Brain Injury Research Group, Stark Neuroscience Research Institute, Indianapolis, IN, USA
- Department of Neurological Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Yue Qiao
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Xiang Gao
- Spinal Cord and Brain Injury Research Group, Stark Neuroscience Research Institute, Indianapolis, IN, USA
- Department of Neurological Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
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5
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Pawar P, Akolkar K, Saxena V. An integrated bioinformatics approach reveals the potential role of microRNA-30b-5p and let-7a-5p during SARS CoV-2 spike-1 mediated neuroinflammation. Int J Biol Macromol 2024; 277:134329. [PMID: 39098684 DOI: 10.1016/j.ijbiomac.2024.134329] [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: 04/01/2024] [Revised: 07/16/2024] [Accepted: 07/23/2024] [Indexed: 08/06/2024]
Abstract
SARS-CoV-2 induced neuroinflammation contributing to neurological sequelae is one of the critical outcomes of long-COVID, however underlying regulatory mechanisms involved therein are poorly understood. We deciphered the profile of dysregulated microRNAs, their targets, associated pathways, protein-protein interactions (PPI), transcription factor-hub genes interaction networks, hub genes-microRNA co-regulatory networks in SARS-CoV-2 Spike-1 (S1) stimulated microglial cells along with candidate drug prediction using RNA-sequencing and multiple bioinformatics approaches. We identified 11 dysregulated microRNAs in the S1-stimulated microglial cells (p < 0.05). KEGG analysis revealed involvement of important neuroinflammatory pathways such as MAPK signalling, PI3K-AKT signalling, Ras signalling and axon guidance. PPI analysis further identified 11 hub genes involved in these pathways. Real time PCR validation confirmed a significant upregulation of microRNA-30b-5p and let-7a-5p; proinflammatory cytokines- IL-6, TNF-α, IL-1β, GM-CSF; and inflammatory genes- PIK3CA and AKT in the S1-stimulated microglial cells, while PTEN and SHIP1 expression was decreased as compared to the non-stimulated cells. Drug prediction analysis further indicated resveratrol, diclofenac and rapamycin as the potential drugs based on their degree of interaction with hub genes. Thus, targeting of these microRNAs and/or their intermediate signalling molecules would be a prospective immunotherapeutic approach in alleviating SARS-CoV-2-S1 mediated neuroinflammation; and needs further investigations.
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Affiliation(s)
- Puja Pawar
- Division of Immunology and Serology, ICMR-National Institute of Translational Virology & AIDS Research (NITVAR), MIDC, Bhosari, Pune, Maharashtra, India
| | - Kadambari Akolkar
- Division of Immunology and Serology, ICMR-National Institute of Translational Virology & AIDS Research (NITVAR), MIDC, Bhosari, Pune, Maharashtra, India
| | - Vandana Saxena
- Division of Immunology and Serology, ICMR-National Institute of Translational Virology & AIDS Research (NITVAR), MIDC, Bhosari, Pune, Maharashtra, India.
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6
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Kim H, Kang S, Go GW. Exploring the multifaceted role of ginkgolides and bilobalide from Ginkgo biloba in mitigating metabolic disorders. Food Sci Biotechnol 2024; 33:2903-2917. [PMID: 39234277 PMCID: PMC11370650 DOI: 10.1007/s10068-024-01656-3] [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: 02/13/2024] [Revised: 06/08/2024] [Accepted: 07/01/2024] [Indexed: 09/06/2024] Open
Abstract
The ancient Ginkgo biloba tree grows across various regions, with distinctive leaves emitting a unique fragrance. Its extract contains flavonoids, organic acids, and terpenoids. Ginkgolide and bilobalide, which are G. biloba leaf extracts, offer diverse pharmaceutical benefits, including antioxidant, anti-inflammatory, and neuroprotective properties. The antioxidant and anti-inflammatory properties of these compounds are crucial for mitigating neurodegeneration, particularly in diseases such as Alzheimer's disease. Additionally, their effectiveness in countering oxidative stress and inflammation highlights their potential to prevent cardiovascular ailments. This study also suggests that these compounds have a promising impact on lipid metabolism, suggesting their significance in addressing obesity-related metabolic disorders. In conclusion, ginkgolides and bilobalide exhibit promising effects in sustaining the integrity of the nervous and endocrine systems, along with the modulation of lipid metabolism. The diverse health benefits suggest that these compounds could serve as promising therapeutic interventions for various conditions, including neurological, cardiovascular, and metabolic diseases.
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Affiliation(s)
- Hayoon Kim
- Department of Food and Nutrition, Hanyang University, Seoul, 04763 Republic of Korea
| | - Sumin Kang
- Department of Food and Nutrition, Hanyang University, Seoul, 04763 Republic of Korea
| | - Gwang-woong Go
- Department of Food and Nutrition, Hanyang University, Seoul, 04763 Republic of Korea
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7
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Ge TQ, Guan PP, Wang P. Complement 3a induces the synapse loss via C3aR in mitochondria-dependent NLRP3 activating mechanisms during the development and progression of Alzheimer's disease. Neurosci Biobehav Rev 2024; 165:105868. [PMID: 39218048 DOI: 10.1016/j.neubiorev.2024.105868] [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: 05/10/2024] [Revised: 08/08/2024] [Accepted: 08/25/2024] [Indexed: 09/04/2024]
Abstract
As a central molecule in complement system (CS), complement (C) 3 is upregulated in the patients and animal models of Alzheimer's disease (AD). C3 will metabolize to iC3b and C3a. iC3b is responsible for clearing β-amyloid protein (Aβ). In this scenario, C3 exerts neuroprotective effects against the disease via iC3b. However, C3a will inhibit microglia to clear the Aβ, leading to the deposition of Aβ and impair the functions of synapses. To their effects on AD, activation of C3a and C3a receptor (C3aR) will impair the mitochondria, leading to the release of reactive oxygen species (ROS), which activates the NOD-like receptor thermal protein domain associated protein 3 (NLRP3) inflammasomes. The overloading of NLRP3 inflammasomes activate microglia, leading to the formation of inflammatory environment. The inflammatory environment will facilitate the deposition of Aβ and abnormal synapse pruning, which results in the progression of AD. Therefore, the current review will decipher the mechanisms of C3a inducing the synapse loss via C3aR in mitochondria-dependent NLRP3 activating mechanisms, which facilitates the understanding the AD.
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Affiliation(s)
- Tong-Qi Ge
- College of Pharmacy, Shenzhen Technology University, Shenzhen 518118, PR China; College of Life and Health Sciences, Northeastern University, Shenyang 110819, PR China
| | - Pei-Pei Guan
- College of Life and Health Sciences, Northeastern University, Shenyang 110819, PR China.
| | - Pu Wang
- College of Pharmacy, Shenzhen Technology University, Shenzhen 518118, PR China.
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Bano N, Khan S, Ahamad S, Kanshana JS, Dar NJ, Khan S, Nazir A, Bhat SA. Microglia and Gut Microbiota: A Double-Edged Sword in Alzheimer's Disease. Ageing Res Rev 2024:102515. [PMID: 39321881 DOI: 10.1016/j.arr.2024.102515] [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: 04/23/2024] [Revised: 09/06/2024] [Accepted: 09/19/2024] [Indexed: 09/27/2024]
Abstract
The strong association between gut microbiota (GM) and brain functions such as mood, behaviour, and cognition has been well documented. Gut-brain axis is a unique bidirectional communication system between the gut and brain, in which gut microbes play essential role in maintaining various molecular and cellular processes. GM interacts with the brain through various pathways and processes including, metabolites, vagus nerve, HPA axis, endocrine system, and immune system to maintain brain homeostasis. GM dysbiosis, or an imbalance in GM, is associated with several neurological disorders, including anxiety, depression, and Alzheimer's disease (AD). Conversely, AD is sustained by microglia-mediated neuroinflammation and neurodegeneration. Further, GM and their products also affect microglia-mediated neuroinflammation and neurodegeneration. Despite the evidence connecting GM dysbiosis and AD progression, the involvement of GM in modulating microglia-mediated neuroinflammation in AD remains elusive. Importantly, deciphering the mechanism/s by which GM regulates microglia-dependent neuroinflammation may be helpful in devising potential therapeutic strategies to mitigate AD. Herein, we review the current evidence regarding the involvement of GM dysbiosis in microglia activation and neuroinflammation in AD. We also discuss the possible mechanisms through which GM influences the functioning of microglia and its implications for therapeutic intervention. Further, we explore the potential of microbiota-targeted interventions, such as prebiotics, probiotics, faecal microbiota transplantation, etc., as a novel therapeutic strategy to mitigate neuroinflammation and AD progression. By understanding and exploring the gut-brain axis, we aspire to revolutionize the treatment of neurodegenerative disorders, many of which share a common theme of microglia-mediated neuroinflammation and neurodegeneration.
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Affiliation(s)
- Nargis Bano
- Department of Zoology, Aligarh Muslim University, Aligarh-202002, India
| | - Sameera Khan
- Department of Zoology, Aligarh Muslim University, Aligarh-202002, India
| | - Shakir Ahamad
- Department of Chemistry, Aligarh Muslim University, Aligarh-202002, India.
| | - Jitendra Singh Kanshana
- Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburg, PA, USA.
| | - Nawab John Dar
- CNB, SALK Institute of Biological Sciences, La Jolla, CA 92037, USA.
| | - Sumbul Khan
- Department of Zoology, Aligarh Muslim University, Aligarh-202002, India
| | - Aamir Nazir
- Division of Neuroscience and Ageing Biology, CSIR-Central Drug Research Institute, Lucknow (U.P.), India; Academy of Scientific and Innovative Research, New Delhi, India.
| | - Shahnawaz Ali Bhat
- Department of Zoology, Aligarh Muslim University, Aligarh-202002, India.
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9
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Theophanous S, Sargiannidou I, Kleopa KA. Glial Cells as Key Regulators in Neuroinflammatory Mechanisms Associated with Multiple Sclerosis. Int J Mol Sci 2024; 25:9588. [PMID: 39273535 PMCID: PMC11395575 DOI: 10.3390/ijms25179588] [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: 07/31/2024] [Revised: 08/29/2024] [Accepted: 09/02/2024] [Indexed: 09/15/2024] Open
Abstract
Even though several highly effective treatments have been developed for multiple sclerosis (MS), the underlying pathological mechanisms and drivers of the disease have not been fully elucidated. In recent years, there has been a growing interest in studying neuroinflammation in the context of glial cell involvement as there is increasing evidence of their central role in disease progression. Although glial cell communication and proper function underlies brain homeostasis and maintenance, their multiple effects in an MS brain remain complex and controversial. In this review, we aim to provide an overview of the contribution of glial cells, oligodendrocytes, astrocytes, and microglia in the pathology of MS during both the activation and orchestration of inflammatory mechanisms, as well as of their synergistic effects during the repair and restoration of function. Additionally, we discuss how the understanding of glial cell involvement in MS may provide new therapeutic targets either to limit disease progression or to facilitate repair.
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Affiliation(s)
- Styliani Theophanous
- Neuroscience Department, The Cyprus Institute of Neurology and Genetics, 2371 Nicosia, Cyprus
| | - Irene Sargiannidou
- Neuroscience Department, The Cyprus Institute of Neurology and Genetics, 2371 Nicosia, Cyprus
| | - Kleopas A Kleopa
- Neuroscience Department, The Cyprus Institute of Neurology and Genetics, 2371 Nicosia, Cyprus
- Center for Multiple Sclerosis and Related Disorders, The Cyprus Institute of Neurology and Genetics, 2371 Nicosia, Cyprus
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10
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Ji Y, McLean JL, Xu R. Emerging Human Pluripotent Stem Cell-Based Human-Animal Brain Chimeras for Advancing Disease Modeling and Cell Therapy for Neurological Disorders. Neurosci Bull 2024; 40:1315-1332. [PMID: 38466557 PMCID: PMC11365908 DOI: 10.1007/s12264-024-01189-z] [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: 08/08/2023] [Accepted: 11/23/2023] [Indexed: 03/13/2024] Open
Abstract
Human pluripotent stem cell (hPSC) models provide unprecedented opportunities to study human neurological disorders by recapitulating human-specific disease mechanisms. In particular, hPSC-based human-animal brain chimeras enable the study of human cell pathophysiology in vivo. In chimeric brains, human neural and immune cells can maintain human-specific features, undergo maturation, and functionally integrate into host brains, allowing scientists to study how human cells impact neural circuits and animal behaviors. The emerging human-animal brain chimeras hold promise for modeling human brain cells and their interactions in health and disease, elucidating the disease mechanism from molecular and cellular to circuit and behavioral levels, and testing the efficacy of cell therapy interventions. Here, we discuss recent advances in the generation and applications of using human-animal chimeric brain models for the study of neurological disorders, including disease modeling and cell therapy.
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Affiliation(s)
- Yanru Ji
- Department of Basic Medical Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Jenna Lillie McLean
- Department of Basic Medical Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Ranjie Xu
- Department of Basic Medical Sciences, Purdue University, West Lafayette, IN, 47907, USA.
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11
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Bertollo AG, Galvan ACL, Dallagnol C, Cortez AD, Ignácio ZM. Early Life Stress and Major Depressive Disorder-An Update on Molecular Mechanisms and Synaptic Impairments. Mol Neurobiol 2024; 61:6469-6483. [PMID: 38307968 DOI: 10.1007/s12035-024-03983-2] [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: 07/05/2023] [Accepted: 01/21/2024] [Indexed: 02/04/2024]
Abstract
Early life stress (ELS), characterized as abuse, neglect, and abandonment, can cause several adverse consequences in the lives of affected individuals. ELS experiences can affect an individual's development in variable ways, persisting in the long term and promoting lasting impacts, considering that early exposure to stressors can be biologically incorporated, as prolonged stimulation of stress response systems affects the development of the brain structure and other body systems, increasing the risk of diseases associated with stress and cognitive impairment. This type of stress increases the risk of developing major depressive disorder (MDD) in a severe form that does not respond adequately to traditional antidepressant treatments. Several alterations are studied as mechanisms that relate ELS with MDD, such as epigenetic alterations, neurotransmitters, and neuronal signaling. This review discusses research that brings evidence about the ELS mechanisms involved in synaptic impairments and MDD. The processes involved in epigenetic changes and the HPA axis are highlighted, as well as changes in neurotransmitters and neuronal signaling mechanisms.
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Affiliation(s)
- Amanda Gollo Bertollo
- Laboratory of Physiology Pharmacology and Psychopathology, Graduate Program in Biomedical Sciences, Federal University of Fronteira Sul, Chapecó, SC, 89815-899, Brazil
| | - Agatha Carina Leite Galvan
- Laboratory of Physiology Pharmacology and Psychopathology, Graduate Program in Biomedical Sciences, Federal University of Fronteira Sul, Chapecó, SC, 89815-899, Brazil
| | - Claudia Dallagnol
- Laboratory of Physiology Pharmacology and Psychopathology, Graduate Program in Biomedical Sciences, Federal University of Fronteira Sul, Chapecó, SC, 89815-899, Brazil
| | - Arthur Dellazeri Cortez
- Laboratory of Physiology Pharmacology and Psychopathology, Graduate Program in Biomedical Sciences, Federal University of Fronteira Sul, Chapecó, SC, 89815-899, Brazil
| | - Zuleide Maria Ignácio
- Laboratory of Physiology Pharmacology and Psychopathology, Graduate Program in Biomedical Sciences, Federal University of Fronteira Sul, Chapecó, SC, 89815-899, Brazil.
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12
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Zhao Y, Liu K, Wang Y, Ma Y, Guo W, Shi C. Human-mouse chimeric brain models constructed from iPSC-derived brain cells: Applications and challenges. Exp Neurol 2024; 379:114848. [PMID: 38857749 DOI: 10.1016/j.expneurol.2024.114848] [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: 03/08/2024] [Revised: 05/27/2024] [Accepted: 06/06/2024] [Indexed: 06/12/2024]
Abstract
The establishment of reliable human brain models is pivotal for elucidating specific disease mechanisms and facilitating the discovery of novel therapeutic strategies for human brain disorders. Human induced pluripotent stem cell (iPSC) exhibit remarkable self-renewal capabilities and can differentiate into specialized cell types. This makes them a valuable cell source for xenogeneic or allogeneic transplantation. Human-mouse chimeric brain models constructed from iPSC-derived brain cells have emerged as valuable tools for modeling human brain diseases and exploring potential therapeutic strategies for brain disorders. Moreover, the integration and functionality of grafted stem cells has been effectively assessed using these models. Therefore, this review provides a comprehensive overview of recent progress in differentiating human iPSC into various highly specialized types of brain cells. This review evaluates the characteristics and functions of the human-mouse chimeric brain model. We highlight its potential roles in brain function and its ability to reconstruct neural circuitry in vivo. Additionally, we elucidate factors that influence the integration and differentiation of human iPSC-derived brain cells in vivo. This review further sought to provide suitable research models for cell transplantation therapy. These research models provide new insights into neuropsychiatric disorders, infectious diseases, and brain injuries, thereby advancing related clinical and academic research.
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Affiliation(s)
- Ya Zhao
- Laboratory Animal Center, Fourth Military Medical University, Xi'an, Shaanxi 710032, PR China
| | - Ke Liu
- Laboratory Animal Center, Fourth Military Medical University, Xi'an, Shaanxi 710032, PR China; Gansu University of traditional Chinese medicine, Lanzhou 730030, PR China
| | - Yinghua Wang
- Medical College of Yan'an University, Yan'an 716000, PR China
| | - Yifan Ma
- Laboratory Animal Center, Fourth Military Medical University, Xi'an, Shaanxi 710032, PR China; Gansu University of traditional Chinese medicine, Lanzhou 730030, PR China
| | - Wenwen Guo
- Laboratory Animal Center, Fourth Military Medical University, Xi'an, Shaanxi 710032, PR China
| | - Changhong Shi
- Laboratory Animal Center, Fourth Military Medical University, Xi'an, Shaanxi 710032, PR China.
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Banerjee A, Chatterji U. Prevalence of perturbed gut microbiota in pathophysiology of arsenic-induced anxiety- and depression-like behaviour in mice. CHEMOSPHERE 2024; 364:143293. [PMID: 39245217 DOI: 10.1016/j.chemosphere.2024.143293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 08/06/2024] [Accepted: 09/05/2024] [Indexed: 09/10/2024]
Abstract
Severe toxic effects of arsenic on human physiology have been of immense concern worldwide. Arsenic causes irrevocable structural and functional disruption of tissues, leading to major diseases in chronically exposed individuals. However, it is yet to be resolved whether the effects result from direct deposition and persistence of arsenic in tissues, or via activation of indirect signaling components. Emerging evidences suggest that gut inhabitants play an active role in orchestrating various aspects of brain physiology, as the gut-brain axis maintains cognitive health, emotions, learning and memory skills. Arsenic-induced dysbiosis may consequentially evoke neurotoxicity, eventually leading to anxiety and depression. To delineate the mechanism of action, mice were exposed to different concentrations of arsenic. Enrichment of Gram-negative bacteria and compromised barrier integrity of the gut enhanced lipopolysaccharide (LPS) level in the bloodstream, which in turn elicited systemic inflammation. Subsequent alterations in neurotransmitter levels, microglial activation and histoarchitectural disruption in brain triggered onset of anxiety- and depression-like behaviour in a dose-dependent manner. Finally, to confirm whether the neurotoxic effects are specifically a consequence of modulation of gut microbiota (GM) by arsenic and not arsenic accumulation in the brain, fecal microbiota transplantations (FMT) were performed from arsenic-exposed mice to healthy recipients. 16S rRNA gene sequencing indicated major alterations in GM population in FMT mice, leading to severe structural, functional and behavioural alterations. Moreover, suppression of Toll-like receptor 4 (TLR4) using vivo-morpholino oligomers (VMO) indicated restoration of the altered parameters towards normalcy in FMT mice, confirming direct involvement of the GM in inducing neurotoxicity through the arsenic-gut-brain axis. This study accentuates the potential role of the gut microbiota in promoting neurotoxicity in arsenic-exposed mice, and has immense relevance in predicting neurotoxicity under altered conditions of the gut for designing therapeutic interventions that will target gut dysbiosis to attenuate arsenic-mediated neurotoxicity.
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Affiliation(s)
- Ananya Banerjee
- Cancer Research Laboratory, Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, India
| | - Urmi Chatterji
- Cancer Research Laboratory, Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, India; Centre for Research in Nanoscience and Nanotechnology, Technology Campus, University of Calcutta, JD-2, Sector-III, Salt Lake, Kolkata, India.
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14
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Rowe CJ, Nwaolu U, Martin L, Huang BJ, Mang J, Salinas D, Schlaff CD, Ghenbot S, Lansford JL, Potter BK, Schobel SA, Gann ER, Davis TA. Systemic inflammation following traumatic injury and its impact on neuroinflammatory gene expression in the rodent brain. J Neuroinflammation 2024; 21:211. [PMID: 39198925 PMCID: PMC11360339 DOI: 10.1186/s12974-024-03205-5] [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: 04/01/2024] [Accepted: 08/16/2024] [Indexed: 09/01/2024] Open
Abstract
BACKGROUND Trauma can result in systemic inflammation that leads to organ dysfunction, but the impact on the brain, particularly following extracranial insults, has been largely overlooked. METHODS Building upon our prior findings, we aimed to understand the impact of systemic inflammation on neuroinflammatory gene transcripts in eight brain regions in rats exposed to (1) blast overpressure exposure [BOP], (2) cutaneous thermal injury [BU], (3) complex extremity injury, 3 hours (h) of tourniquet-induced ischemia, and hind limb amputation [CEI+tI+HLA], (4) BOP+BU or (5) BOP+CEI and delayed HLA [BOP+CEI+dHLA] at 6, 24, and 168 h post-injury (hpi). RESULTS Globally, the number and magnitude of differentially expressed genes (DEGs) correlated with injury severity, systemic inflammation markers, and end-organ damage, driven by several chemokines/cytokines (Csf3, Cxcr2, Il16, and Tgfb2), neurosteroids/prostaglandins (Cyp19a1, Ptger2, and Ptger3), and markers of neurodegeneration (Gfap, Grin2b, and Homer1). Regional neuroinflammatory activity was least impacted following BOP. Non-blast trauma (in the BU and CEI+tI+HLA groups) contributed to an earlier, robust and diverse neuroinflammatory response across brain regions (up to 2-50-fold greater than that in the BOP group), while combined trauma (in the BOP+CEI+dHLA group) significantly advanced neuroinflammation in all regions except for the cerebellum. In contrast, BOP+BU resulted in differential activity of several critical neuroinflammatory-neurodegenerative markers compared to BU. t-SNE plots of DEGs demonstrated that the onset, extent, and duration of the inflammatory response are brain region dependent. Regardless of injury type, the thalamus and hypothalamus, which are critical for maintaining homeostasis, had the most DEGs. Our results indicate that neuroinflammation in all groups progressively increased or remained at peak levels over the study duration, while markers of end-organ dysfunction decreased or otherwise resolved. CONCLUSIONS Collectively, these findings emphasize the brain's sensitivity to mediators of systemic inflammation and provide an example of immune-brain crosstalk. Follow-on molecular and behavioral investigations are warranted to understand the short- to long-term pathophysiological consequences on the brain, particularly the mechanism of blood-brain barrier breakdown, immune cell penetration-activation, and microglial activation.
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Affiliation(s)
- Cassie J Rowe
- Cell Biology and Regenerative Medicine Program, Department of Surgery, Uniformed Services University, 4301 Jones Bridge Road, Building A Room 3009E, Bethesda, MD, 20814, USA.
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, Bethesda, MD, USA.
| | - Uloma Nwaolu
- Cell Biology and Regenerative Medicine Program, Department of Surgery, Uniformed Services University, 4301 Jones Bridge Road, Building A Room 3009E, Bethesda, MD, 20814, USA
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, Bethesda, MD, USA
| | - Laura Martin
- Cell Biology and Regenerative Medicine Program, Department of Surgery, Uniformed Services University, 4301 Jones Bridge Road, Building A Room 3009E, Bethesda, MD, 20814, USA
- F. Edward Hébert School of Medicine, Uniformed Service University, Bethesda, MD, USA
| | - Benjamin J Huang
- Cell Biology and Regenerative Medicine Program, Department of Surgery, Uniformed Services University, 4301 Jones Bridge Road, Building A Room 3009E, Bethesda, MD, 20814, USA
- F. Edward Hébert School of Medicine, Uniformed Service University, Bethesda, MD, USA
| | - Josef Mang
- Cell Biology and Regenerative Medicine Program, Department of Surgery, Uniformed Services University, 4301 Jones Bridge Road, Building A Room 3009E, Bethesda, MD, 20814, USA
- F. Edward Hébert School of Medicine, Uniformed Service University, Bethesda, MD, USA
| | - Daniela Salinas
- Cell Biology and Regenerative Medicine Program, Department of Surgery, Uniformed Services University, 4301 Jones Bridge Road, Building A Room 3009E, Bethesda, MD, 20814, USA
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, Bethesda, MD, USA
| | - Cody D Schlaff
- Cell Biology and Regenerative Medicine Program, Department of Surgery, Uniformed Services University, 4301 Jones Bridge Road, Building A Room 3009E, Bethesda, MD, 20814, USA
| | - Sennay Ghenbot
- Cell Biology and Regenerative Medicine Program, Department of Surgery, Uniformed Services University, 4301 Jones Bridge Road, Building A Room 3009E, Bethesda, MD, 20814, USA
| | - Jefferson L Lansford
- Cell Biology and Regenerative Medicine Program, Department of Surgery, Uniformed Services University, 4301 Jones Bridge Road, Building A Room 3009E, Bethesda, MD, 20814, USA
| | - Benjamin K Potter
- Cell Biology and Regenerative Medicine Program, Department of Surgery, Uniformed Services University, 4301 Jones Bridge Road, Building A Room 3009E, Bethesda, MD, 20814, USA
- F. Edward Hébert School of Medicine, Uniformed Service University, Bethesda, MD, USA
- Surgical Critical Care Initiative (SC2i), Uniformed Services University, Bethesda, MD, USA
| | - Seth A Schobel
- Surgical Critical Care Initiative (SC2i), Uniformed Services University, Bethesda, MD, USA
| | - Eric R Gann
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, Bethesda, MD, USA
- Surgical Critical Care Initiative (SC2i), Uniformed Services University, Bethesda, MD, USA
| | - Thomas A Davis
- Cell Biology and Regenerative Medicine Program, Department of Surgery, Uniformed Services University, 4301 Jones Bridge Road, Building A Room 3009E, Bethesda, MD, 20814, USA
- F. Edward Hébert School of Medicine, Uniformed Service University, Bethesda, MD, USA
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15
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Islam MR, Rabbi MA, Hossain T, Sultana S, Uddin S. Mechanistic Approach to Immunity and Immunotherapy of Alzheimer's Disease: A Review. ACS Chem Neurosci 2024. [PMID: 39173186 DOI: 10.1021/acschemneuro.4c00360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2024] Open
Abstract
Alzheimer's disease (AD) is a debilitating neurodegenerative condition characterized by progressive cognitive decline and memory loss, affecting millions of people worldwide. Traditional treatments, such as cholinesterase inhibitors and NMDA receptor antagonists, offer limited symptomatic relief without addressing the underlying disease mechanisms. These limitations have driven the development of more potent and effective therapies. Recent advances in immunotherapy present promising avenues for AD treatment. Immunotherapy strategies, including both active and passive approaches, harness the immune system to target and mitigate AD-related pathology. Active immunotherapy stimulates the patient's immune response to produce antibodies against AD-specific antigens, while passive immunotherapy involves administering preformed antibodies or immune cells that specifically target amyloid-β (Aβ) or tau proteins. Monoclonal antibodies, such as aducanumab and lecanemab, have shown potential in reducing Aβ plaques and slowing cognitive decline in clinical trials, despite challenges related to adverse immune responses and the need for precise targeting. This comprehensive review explores the role of the immune system in AD, evaluates the current successes and limitations of immunotherapeutic approaches, and discusses future directions for enhancing the treatment efficacy.
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Affiliation(s)
- Md Rubiath Islam
- Department of Biochemistry and Molecular Biology, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh
| | - Md Afser Rabbi
- Department of Biochemistry and Molecular Biology, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh
| | - Tanbir Hossain
- Department of Biochemistry and Molecular Biology, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh
| | - Sadia Sultana
- Department of Biochemistry and Molecular Biology, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh
| | - Shihab Uddin
- Department of Bioengineering, King Fahad University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
- Interdisciplinary Research Center for Bio Systems and Machines, King Fahad University of Petroleum & Minerals, Dhahran-31261, Saudi Arabia
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16
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Zhang X, Liu H, Xiu X, Cheng J, Li T, Wang P, Men L, Qiu J, Jin Y, Zhao J. Exosomal GDNF from Bone Marrow Mesenchymal Stem Cells Moderates Neuropathic Pain in a Rat Model of Chronic Constriction Injury. Neuromolecular Med 2024; 26:34. [PMID: 39167282 DOI: 10.1007/s12017-024-08800-6] [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: 06/21/2024] [Accepted: 08/07/2024] [Indexed: 08/23/2024]
Abstract
Both of exosomes derived from mesenchymal stem cells (MSCs) and glial cell line-derived neurotrophic factor (GDNF) show potential for the treatment of neuropathic pain. Here, the analgesic effects of exosomes derived from bone marrow MSCs (BMSCs) were investigated. BMSCs-derived exosomes were isolated and characterized. Chronic constriction injury (CCI) was constructed to induce neuropathic pain in rats, which were then treated with exosomes. Pain behaviors were evaluated by measuring paw withdrawal thresholds and latency. The changes of key proteins, including cytokines, were explored using Western blot and ELISA. Administration of BMSCs-derived exosomes alleviated neuropathic pain, as demonstrated by the decrease of thermal hyperalgesia and mechanical allodynia, as well as the reduced secretion of pro-inflammatory cytokines in CCI rats. These effects were comparable to the treatment of GDNF alone. Mechanically, the exosomes suppressed the CCI-induced activation of TLR2/MyD88/NF-κB signaling pathway, while GDNF knockdown impaired their analgesic effects on CCI rat. BMSCs-derived exosomes may alleviate CCI-induced neuropathic pain and inflammation in rats by transporting GDNF.
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Affiliation(s)
- Xuelei Zhang
- Graduate School, Hebei University of Chinese Medicine, No. 3 Xingyuan Road, Luquan District, Shijiazhuang, 050200, Hebei, China.
- Department of Hand Microsurgery, The Hebei Cangzhou Hospital of Integrated Traditional Chinese Medicine and Western Medicine, Cangzhou, 061000, Hebei, China.
- Hebei Key Laboratory of Intergraded Traditional and Western Medicine in Osteoarthrosis Research (Preparing), Cangzhou, 061000, Hebei, China.
| | - Huan Liu
- Graduate School, Hebei University of Chinese Medicine, No. 3 Xingyuan Road, Luquan District, Shijiazhuang, 050200, Hebei, China
| | - Xiaolei Xiu
- Department of Hand Microsurgery, The Hebei Cangzhou Hospital of Integrated Traditional Chinese Medicine and Western Medicine, Cangzhou, 061000, Hebei, China
| | - Jibo Cheng
- Chengde Medical University, Anyuan Road, Chengde, 067000, Hebei, China
| | - Tong Li
- Department of Hand Microsurgery, The Hebei Cangzhou Hospital of Integrated Traditional Chinese Medicine and Western Medicine, Cangzhou, 061000, Hebei, China
| | - Ping Wang
- Department of Hand Microsurgery, The Hebei Cangzhou Hospital of Integrated Traditional Chinese Medicine and Western Medicine, Cangzhou, 061000, Hebei, China
| | - Lili Men
- Department of Hand Microsurgery, The Hebei Cangzhou Hospital of Integrated Traditional Chinese Medicine and Western Medicine, Cangzhou, 061000, Hebei, China
| | - Junru Qiu
- Department of Hand Microsurgery, The Hebei Cangzhou Hospital of Integrated Traditional Chinese Medicine and Western Medicine, Cangzhou, 061000, Hebei, China
| | - Yanyan Jin
- Department of Hand Microsurgery, The Hebei Cangzhou Hospital of Integrated Traditional Chinese Medicine and Western Medicine, Cangzhou, 061000, Hebei, China
| | - Jianyong Zhao
- Department of Hand Microsurgery, The Hebei Cangzhou Hospital of Integrated Traditional Chinese Medicine and Western Medicine, Cangzhou, 061000, Hebei, China.
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Yuan ZY, Zhang X, Yu ZZ, Wang XY, Zeng ZH, Wei MX, Qiu MT, Wang J, Cheng J, Yi LT. Polygonatum sibiricum Polysaccharides Alleviate Depressive-like Symptoms in Chronic Restraint Stress-Induced Mice via Microglial Regulation in Prefrontal Cortex. Polymers (Basel) 2024; 16:2358. [PMID: 39204578 PMCID: PMC11359046 DOI: 10.3390/polym16162358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2024] [Revised: 08/05/2024] [Accepted: 08/07/2024] [Indexed: 09/04/2024] Open
Abstract
Microglia respond to stressors by secreting cytokines or growth factors, playing a crucial role in maintaining brain homeostasis. While the antidepressant-like effects of Polygonatum sibiricum polysaccharides (PSPs) have been observed in mice, their potential effectiveness involving microglial regulation remains unknown. This study investigates the antidepressant-like mechanism of PSP by regulating microglial phenotype and signaling pathways in the prefrontal cortex of chronic restraint stress (CRS)-induced mice. PSP was extracted, purified, characterized, and orally administered to CRS mice. High-performance gel permeation chromatography (HPGPC) revealed that PSP has a molecular weight of 5.6 kDa. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) showed that PSP exhibited a layered structure with densely packed, irregular surfaces. PSP treatment significantly increased sucrose preference (low: 71%, p < 0.01; medium: 69%, p < 0.05; high: 75%, p < 0.001 vs. CRS: 58%) and reduced immobility time (low: 74 s, p < 0.01; medium: 68 s, p < 0.01; high: 79 s, p < 0.05 vs. CRS: 129 s), indicating the alleviation of depressive-like behaviors. PSP inhibited microglial activation (PSP, 131/mm2 vs. CRS, 173/mm2, p = 0.057), reversing CRS-induced microglial hypertrophy and hyper-ramification. Furthermore, PSP inactivated microglial activation by inhibiting NLRP3/ASC/caspase-1/IL-1β signaling pathways, increasing BDNF synthesis and activating brain-derived neurotrophic factor (BDNF)-mediated neurogenesis (PSP, 80/per DG vs. CRS, 49/per DG, p < 0.01). In conclusion, PSP exerts antidepressant-like effects through the regulation of microglial activity and neuroinflammatory pathways, indicating it as a potential natural compound for depression treatment.
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Affiliation(s)
- Zhong-Yu Yuan
- Department of Chemical and Pharmaceutical Engineering, College of Chemical Engineering, Huaqiao University, Xiamen 361021, China; (Z.-Y.Y.); (X.Z.); (Z.-Z.Y.); (X.-Y.W.); (Z.-H.Z.); (M.-X.W.); (M.-T.Q.); (J.W.)
| | - Xuan Zhang
- Department of Chemical and Pharmaceutical Engineering, College of Chemical Engineering, Huaqiao University, Xiamen 361021, China; (Z.-Y.Y.); (X.Z.); (Z.-Z.Y.); (X.-Y.W.); (Z.-H.Z.); (M.-X.W.); (M.-T.Q.); (J.W.)
| | - Zong-Zhong Yu
- Department of Chemical and Pharmaceutical Engineering, College of Chemical Engineering, Huaqiao University, Xiamen 361021, China; (Z.-Y.Y.); (X.Z.); (Z.-Z.Y.); (X.-Y.W.); (Z.-H.Z.); (M.-X.W.); (M.-T.Q.); (J.W.)
| | - Xin-Yu Wang
- Department of Chemical and Pharmaceutical Engineering, College of Chemical Engineering, Huaqiao University, Xiamen 361021, China; (Z.-Y.Y.); (X.Z.); (Z.-Z.Y.); (X.-Y.W.); (Z.-H.Z.); (M.-X.W.); (M.-T.Q.); (J.W.)
| | - Zi-Heng Zeng
- Department of Chemical and Pharmaceutical Engineering, College of Chemical Engineering, Huaqiao University, Xiamen 361021, China; (Z.-Y.Y.); (X.Z.); (Z.-Z.Y.); (X.-Y.W.); (Z.-H.Z.); (M.-X.W.); (M.-T.Q.); (J.W.)
| | - Meng-Xuan Wei
- Department of Chemical and Pharmaceutical Engineering, College of Chemical Engineering, Huaqiao University, Xiamen 361021, China; (Z.-Y.Y.); (X.Z.); (Z.-Z.Y.); (X.-Y.W.); (Z.-H.Z.); (M.-X.W.); (M.-T.Q.); (J.W.)
| | - Meng-Ting Qiu
- Department of Chemical and Pharmaceutical Engineering, College of Chemical Engineering, Huaqiao University, Xiamen 361021, China; (Z.-Y.Y.); (X.Z.); (Z.-Z.Y.); (X.-Y.W.); (Z.-H.Z.); (M.-X.W.); (M.-T.Q.); (J.W.)
| | - Jun Wang
- Department of Chemical and Pharmaceutical Engineering, College of Chemical Engineering, Huaqiao University, Xiamen 361021, China; (Z.-Y.Y.); (X.Z.); (Z.-Z.Y.); (X.-Y.W.); (Z.-H.Z.); (M.-X.W.); (M.-T.Q.); (J.W.)
| | - Jie Cheng
- Department of Chemical and Pharmaceutical Engineering, College of Chemical Engineering, Huaqiao University, Xiamen 361021, China; (Z.-Y.Y.); (X.Z.); (Z.-Z.Y.); (X.-Y.W.); (Z.-H.Z.); (M.-X.W.); (M.-T.Q.); (J.W.)
| | - Li-Tao Yi
- Department of Chemical and Pharmaceutical Engineering, College of Chemical Engineering, Huaqiao University, Xiamen 361021, China; (Z.-Y.Y.); (X.Z.); (Z.-Z.Y.); (X.-Y.W.); (Z.-H.Z.); (M.-X.W.); (M.-T.Q.); (J.W.)
- Institute of Pharmaceutical Engineering, Huaqiao University, Xiamen 361021, China
- Fujian Provincial Key Laboratory of Biochemical Technology, Huaqiao University, Xiamen 361021, China
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18
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Bian Y, Qiao N, Han S, Gao J, Lv X, Yuan L, Zhang L, Wei Z. Anti-Neuroinflammatory Effect of Ombuin from Rhamnus erythroxylon Pall. Leaves in LPS-Induced BV-2 Microglia by Targeting Src and Suppressing the PI3K-AKT/NF-κB Signaling Pathway. Int J Mol Sci 2024; 25:8789. [PMID: 39201475 PMCID: PMC11354356 DOI: 10.3390/ijms25168789] [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: 07/03/2024] [Revised: 07/26/2024] [Accepted: 07/29/2024] [Indexed: 09/02/2024] Open
Abstract
The leaves of Rhamnus erythroxylon Pall. are widely used as tea substitutes in northwest China for their fragrant aroma, anti-irritability, and digestion-enhancing properties. Ombuin, a main flavonoid compound found in the leaves, exhibited notable anti-inflammatory and antioxidant effects. However, its potential role in treating neuroinflammatory-related diseases remains unexplored. Thus, this study aims to evaluate the anti-neuroinflammatory effects of ombuin and to explore the underlying molecular mechanisms. According to our findings, ombuin dramatically reduced the release of interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), IL-1β, nitric oxide (NO), and reactive oxygen species (ROS) in lipopolysaccharide (LPS)-stimulated BV-2 microglia. Further analysis, including transcriptomics, network pharmacology, molecular docking, and cellular heat transfer assays, revealed that Src was a direct target of ombuin. Western blot analysis showed that ombuin effectively suppressed Src phosphorylation and inhibited the downstream expressions of p-PI3K p85, p-AKT1, p-IKKα/β, p-IκBα, and nuclear factor κB (NF-κB). Meanwhile, the repression of Src significantly reversed the anti-neuroinflammatory activity of ombuin. Our results identified Src as a direct target of ombuin and implied that ombuin exerted an anti-neuroinflammatory effect by inhibiting Src phosphorylation and suppressing the activation of the PI3K-AKT and NF-κB pathways, which might provide an alternative therapeutic strategy for neurodegenerative diseases.
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Affiliation(s)
| | | | | | | | | | | | - Linjing Zhang
- School of Life Science, Shanxi Normal University, Taiyuan 030006, China
| | - Zuofu Wei
- School of Life Science, Shanxi Normal University, Taiyuan 030006, China
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19
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Chae S, Lee HJ, Lee HE, Kim J, Jeong YJ, Lin Y, Kim HY, Leriche G, Ehrlich RS, Lingl SC, Seo MD, Lee YH, Yang J, Kim JI, Hoe HS. The dopamine analogue CA140 alleviates AD pathology, neuroinflammation, and rescues synaptic/cognitive functions by modulating DRD1 signaling or directly binding to Abeta. J Neuroinflammation 2024; 21:200. [PMID: 39129007 PMCID: PMC11317008 DOI: 10.1186/s12974-024-03180-x] [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: 07/10/2023] [Accepted: 07/17/2024] [Indexed: 08/13/2024] Open
Abstract
BACKGROUND We recently reported that the dopamine (DA) analogue CA140 modulates neuroinflammatory responses in lipopolysaccharide-injected wild-type (WT) mice and in 3-month-old 5xFAD mice, a model of Alzheimer's disease (AD). However, the effects of CA140 on Aβ/tau pathology and synaptic/cognitive function and its molecular mechanisms of action are unknown. METHODS To investigate the effects of CA140 on cognitive and synaptic function and AD pathology, 3-month-old WT mice or 8-month-old (aged) 5xFAD mice were injected with vehicle (10% DMSO) or CA140 (30 mg/kg, i.p.) daily for 10, 14, or 17 days. Behavioral tests, ELISA, electrophysiology, RNA sequencing, real-time PCR, Golgi staining, immunofluorescence staining, and western blotting were conducted. RESULTS In aged 5xFAD mice, a model of AD pathology, CA140 treatment significantly reduced Aβ/tau fibrillation, Aβ plaque number, tau hyperphosphorylation, and neuroinflammation by inhibiting NLRP3 activation. In addition, CA140 treatment downregulated the expression of cxcl10, a marker of AD-associated reactive astrocytes (RAs), and c1qa, a marker of the interaction of RAs with disease-associated microglia (DAMs) in 5xFAD mice. CA140 treatment also suppressed the mRNA levels of s100β and cxcl10, markers of AD-associated RAs, in primary astrocytes from 5xFAD mice. In primary microglial cells from 5xFAD mice, CA140 treatment increased the mRNA levels of markers of homeostatic microglia (cx3cr1 and p2ry12) and decreased the mRNA levels of a marker of proliferative region-associated microglia (gpnmb) and a marker of lipid-droplet-accumulating microglia (cln3). Importantly, CA140 treatment rescued scopolamine (SCO)-mediated deficits in long-term memory, dendritic spine number, and LTP impairment. In aged 5xFAD mice, these effects of CA140 treatment on cognitive/synaptic function and AD pathology were regulated by dopamine D1 receptor (DRD1)/Elk1 signaling. In primary hippocampal neurons and WT mice, CA140 treatment promoted long-term memory and dendritic spine formation via effects on DRD1/CaMKIIα and/or ERK signaling. CONCLUSIONS Our results indicate that CA140 improves neuronal/synaptic/cognitive function and ameliorates Aβ/tau pathology and neuroinflammation by modulating DRD1 signaling in primary hippocampal neurons, primary astrocytes/microglia, WT mice, and aged 5xFAD mice.
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Affiliation(s)
- Sehyun Chae
- Neurovascular Unit, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41068, Republic of Korea
| | - Hyun-Ju Lee
- Neurodegenerative Unit, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41068, Republic of Korea
| | - Ha-Eun Lee
- Department of Biological Sciences, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-Gil, Ulsan, 44919, Republic of Korea
| | - Jieun Kim
- Neurodegenerative Unit, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41068, Republic of Korea
| | - Yoo Joo Jeong
- Neurodegenerative Unit, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41068, Republic of Korea
- Department of Brain & Cognitive Sciences, Daegu Gyeongbuk Institute of Science & Technology (DGIST), Daegu, 42988, Republic of Korea
| | - Yuxi Lin
- Biopharmaceutical Research Center, Korea Basic Science Institute (KBSI), Ochang, ChungBuk, 28119, Republic of Korea
| | - Hye Yun Kim
- Department of Biological Sciences, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-Gil, Ulsan, 44919, Republic of Korea
| | - Geoffray Leriche
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, 92093-0358, USA
| | - Rachel S Ehrlich
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, 92093-0358, USA
| | - Sascha Castro Lingl
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, 92093-0358, USA
| | - Min-Duk Seo
- College of Pharmacy and Department of Molecular Science and Technology, Ajou University, Suwon, Gyeonggi, 16499, Republic of Korea
| | - Young-Ho Lee
- Biopharmaceutical Research Center, Korea Basic Science Institute (KBSI), Ochang, ChungBuk, 28119, Republic of Korea
- Bio-Analytical Science, University of Science and Technology (UST), Daejeon, 34113, Republic of Korea
- Department of Systems Biotechnology, Chung-Ang University, Gyeonggi , 17546, Republic of Korea
| | - Jerry Yang
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, 92093-0358, USA.
| | - Jae-Ick Kim
- Department of Biological Sciences, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-Gil, Ulsan, 44919, Republic of Korea.
| | - Hyang-Sook Hoe
- Neurodegenerative Unit, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41068, Republic of Korea.
- Department of Brain & Cognitive Sciences, Daegu Gyeongbuk Institute of Science & Technology (DGIST), Daegu, 42988, Republic of Korea.
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61 Cheomdan-ro, Dong-gu, Daegu, 41068, Republic of Korea.
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20
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Bastioli G, Piccirillo S, Graciotti L, Carone M, Sprega G, Taoussi O, Preziuso A, Castaldo P. Calcium Deregulation in Neurodegeneration and Neuroinflammation in Parkinson's Disease: Role of Calcium-Storing Organelles and Sodium-Calcium Exchanger. Cells 2024; 13:1301. [PMID: 39120330 PMCID: PMC11311461 DOI: 10.3390/cells13151301] [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: 06/13/2024] [Revised: 07/31/2024] [Accepted: 08/02/2024] [Indexed: 08/10/2024] Open
Abstract
Parkinson's disease (PD) is a progressive neurodegenerative disorder that lacks effective treatment strategies to halt or delay its progression. The homeostasis of Ca2+ ions is crucial for ensuring optimal cellular functions and survival, especially for neuronal cells. In the context of PD, the systems regulating cellular Ca2+ are compromised, leading to Ca2+-dependent synaptic dysfunction, impaired neuronal plasticity, and ultimately, neuronal loss. Recent research efforts directed toward understanding the pathology of PD have yielded significant insights, particularly highlighting the close relationship between Ca2+ dysregulation, neuroinflammation, and neurodegeneration. However, the precise mechanisms driving the selective loss of dopaminergic neurons in PD remain elusive. The disruption of Ca2+ homeostasis is a key factor, engaging various neurodegenerative and neuroinflammatory pathways and affecting intracellular organelles that store Ca2+. Specifically, impaired functioning of mitochondria, lysosomes, and the endoplasmic reticulum (ER) in Ca2+ metabolism is believed to contribute to the disease's pathophysiology. The Na+-Ca2+ exchanger (NCX) is considered an important key regulator of Ca2+ homeostasis in various cell types, including neurons, astrocytes, and microglia. Alterations in NCX activity are associated with neurodegenerative processes in different models of PD. In this review, we will explore the role of Ca2+ dysregulation and neuroinflammation as primary drivers of PD-related neurodegeneration, with an emphasis on the pivotal role of NCX in the pathology of PD. Consequently, NCXs and their interplay with intracellular organelles may emerge as potentially pivotal players in the mechanisms underlying PD neurodegeneration, providing a promising avenue for therapeutic intervention aimed at halting neurodegeneration.
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Affiliation(s)
- Guendalina Bastioli
- Division of Neuroscience, San Raffaele Scientific Institute, 20132 Milan, Italy;
| | - Silvia Piccirillo
- Department of Biomedical Sciences and Public Health, School of Medicine, University “Politecnica Delle Marche”, Via Tronto 10/A, 60126 Ancona, Italy; (L.G.); (M.C.); (G.S.); (O.T.); (A.P.)
| | - Laura Graciotti
- Department of Biomedical Sciences and Public Health, School of Medicine, University “Politecnica Delle Marche”, Via Tronto 10/A, 60126 Ancona, Italy; (L.G.); (M.C.); (G.S.); (O.T.); (A.P.)
| | - Marianna Carone
- Department of Biomedical Sciences and Public Health, School of Medicine, University “Politecnica Delle Marche”, Via Tronto 10/A, 60126 Ancona, Italy; (L.G.); (M.C.); (G.S.); (O.T.); (A.P.)
- Institute of Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, 8092 Zürich, Switzerland
| | - Giorgia Sprega
- Department of Biomedical Sciences and Public Health, School of Medicine, University “Politecnica Delle Marche”, Via Tronto 10/A, 60126 Ancona, Italy; (L.G.); (M.C.); (G.S.); (O.T.); (A.P.)
| | - Omayema Taoussi
- Department of Biomedical Sciences and Public Health, School of Medicine, University “Politecnica Delle Marche”, Via Tronto 10/A, 60126 Ancona, Italy; (L.G.); (M.C.); (G.S.); (O.T.); (A.P.)
| | - Alessandra Preziuso
- Department of Biomedical Sciences and Public Health, School of Medicine, University “Politecnica Delle Marche”, Via Tronto 10/A, 60126 Ancona, Italy; (L.G.); (M.C.); (G.S.); (O.T.); (A.P.)
| | - Pasqualina Castaldo
- Department of Biomedical Sciences and Public Health, School of Medicine, University “Politecnica Delle Marche”, Via Tronto 10/A, 60126 Ancona, Italy; (L.G.); (M.C.); (G.S.); (O.T.); (A.P.)
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21
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Lv S, Mo F, Xu Z, Wang Y, Yang G, Han M, Jing L, Xu W, Duan Y, Liu Y, Li M, Liu J, Luo J, Wang M, Song Y, Wu Y, Cai X. Tentacle Microelectrode Arrays Uncover Soft Boundary Neurons in Hippocampal CA1. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2401670. [PMID: 38828784 PMCID: PMC11304256 DOI: 10.1002/advs.202401670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 04/28/2024] [Indexed: 06/05/2024]
Abstract
Hippocampal CA1 neurons show intense firing at specific spatial locations, modulated by isolated landmarks. However, the impact of real-world scene transitions on neuronal activity remains unclear. Moreover, long-term neural recording during movement challenges device stability. Conventional rigid-based electrodes cause inflammatory responses, restricting recording durations. Inspired by the jellyfish tentacles, the multi-conductive layer ultra-flexible microelectrode arrays (MEAs) are developed. The tentacle MEAs ensure stable recordings during movement, thereby enabling the discovery of soft boundary neurons. The soft boundary neurons demonstrate high-frequency firing that aligns with the boundaries of scene transitions. Furthermore, the localization ability of soft boundary neurons improves with more scene transition boundaries, and their activity decreases when these boundaries are removed. The innovation of ultra-flexible, high-biocompatible tentacle MEAs improves the understanding of neural encoding in spatial cognition. They offer the potential for long-term in vivo recording of neural information, facilitating breakthroughs in the understanding and application of brain spatial navigation mehanisms.
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Affiliation(s)
- Shiya Lv
- State Key Laboratory of Transducer TechnologyAerospace Information Research InstituteChinese Academy of SciencesBeijing100190China
- University of Chinese Academy of SciencesBeijing100049China
| | - Fan Mo
- State Key Laboratory of Transducer TechnologyAerospace Information Research InstituteChinese Academy of SciencesBeijing100190China
- University of Chinese Academy of SciencesBeijing100049China
| | - Zhaojie Xu
- State Key Laboratory of Transducer TechnologyAerospace Information Research InstituteChinese Academy of SciencesBeijing100190China
- University of Chinese Academy of SciencesBeijing100049China
| | - Yu Wang
- State Key Laboratory of Transducer TechnologyAerospace Information Research InstituteChinese Academy of SciencesBeijing100190China
- University of Chinese Academy of SciencesBeijing100049China
| | - Gucheng Yang
- State Key Laboratory of Transducer TechnologyAerospace Information Research InstituteChinese Academy of SciencesBeijing100190China
- University of Chinese Academy of SciencesBeijing100049China
| | - Meiqi Han
- State Key Laboratory of Transducer TechnologyAerospace Information Research InstituteChinese Academy of SciencesBeijing100190China
- University of Chinese Academy of SciencesBeijing100049China
| | - Luyi Jing
- State Key Laboratory of Transducer TechnologyAerospace Information Research InstituteChinese Academy of SciencesBeijing100190China
- University of Chinese Academy of SciencesBeijing100049China
| | - Wei Xu
- State Key Laboratory of Transducer TechnologyAerospace Information Research InstituteChinese Academy of SciencesBeijing100190China
- University of Chinese Academy of SciencesBeijing100049China
| | - Yiming Duan
- State Key Laboratory of Transducer TechnologyAerospace Information Research InstituteChinese Academy of SciencesBeijing100190China
- University of Chinese Academy of SciencesBeijing100049China
| | - Yaoyao Liu
- State Key Laboratory of Transducer TechnologyAerospace Information Research InstituteChinese Academy of SciencesBeijing100190China
- University of Chinese Academy of SciencesBeijing100049China
| | - Ming Li
- State Key Laboratory of Transducer TechnologyAerospace Information Research InstituteChinese Academy of SciencesBeijing100190China
- University of Chinese Academy of SciencesBeijing100049China
| | - Juntao Liu
- State Key Laboratory of Transducer TechnologyAerospace Information Research InstituteChinese Academy of SciencesBeijing100190China
- University of Chinese Academy of SciencesBeijing100049China
| | - Jinping Luo
- State Key Laboratory of Transducer TechnologyAerospace Information Research InstituteChinese Academy of SciencesBeijing100190China
- University of Chinese Academy of SciencesBeijing100049China
| | - Mixia Wang
- State Key Laboratory of Transducer TechnologyAerospace Information Research InstituteChinese Academy of SciencesBeijing100190China
- University of Chinese Academy of SciencesBeijing100049China
| | - Yilin Song
- State Key Laboratory of Transducer TechnologyAerospace Information Research InstituteChinese Academy of SciencesBeijing100190China
- University of Chinese Academy of SciencesBeijing100049China
| | - Yirong Wu
- State Key Laboratory of Transducer TechnologyAerospace Information Research InstituteChinese Academy of SciencesBeijing100190China
- University of Chinese Academy of SciencesBeijing100049China
| | - Xinxia Cai
- State Key Laboratory of Transducer TechnologyAerospace Information Research InstituteChinese Academy of SciencesBeijing100190China
- University of Chinese Academy of SciencesBeijing100049China
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22
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Lu YS, Hung WC, Hsieh YT, Tsai PY, Tsai TH, Fan HH, Chang YG, Cheng HK, Huang SY, Lin HC, Lee YH, Shen TH, Hung BY, Tsai JW, Dzhagalov I, Cheng IHJ, Lin CJ, Chern Y, Hsu CL. Equilibrative nucleoside transporter 3 supports microglial functions and protects against the progression of Huntington's disease in the mouse model. Brain Behav Immun 2024; 120:413-429. [PMID: 38925413 DOI: 10.1016/j.bbi.2024.06.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 06/11/2024] [Accepted: 06/23/2024] [Indexed: 06/28/2024] Open
Abstract
Huntington's disease (HD) is a hereditary neurodegenerative disorder characterized by involuntary movements, cognitive deficits, and psychiatric symptoms. Currently, there is no cure, and only limited treatments are available to manage the symptoms and to slow down the disease's progression. The molecular and cellular mechanisms of HD's pathogenesis are complex, involving immune cell activation, altered protein turnover, and disturbance in brain energy homeostasis. Microglia have been known to play a dual role in HD, contributing to neurodegeneration through inflammation but also enacting neuroprotective effects by clearing mHTT aggregates. However, little is known about the contribution of microglial metabolism to HD progression. This study explores the impact of a microglial metabolite transporter, equilibrative nucleoside transporter 3 (ENT3), in HD. Known as a lysosomal membrane transporter protein, ENT3 is highly enriched in microglia, with its expression correlated with HD severity. Using the R6/2 ENT3-/- mouse model, we found that the deletion of ENT3 increases microglia numbers yet worsens HD progression, leading to mHTT accumulation, cell death, and disturbed energy metabolism. These results suggest that the delicate balance between microglial metabolism and function is crucial for maintaining brain homeostasis and that ENT3 has a protective role in ameliorating neurodegenerative processes.
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Affiliation(s)
- Ying-Sui Lu
- Institute of Microbiology and Immunology, National Yang Ming Chiao Tung University, Taipei, Taiwan; Taiwan International Graduate Program in Molecular Medicine, National Yang Ming Chiao Tung University and Academia Sinica, Taipei, Taiwan
| | - Wei-Chien Hung
- Institute of Brain Science, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Yu-Ting Hsieh
- Institute of Microbiology and Immunology, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Pei-Yuan Tsai
- Institute of Microbiology and Immunology, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Tsai-Hsien Tsai
- Institute of Microbiology and Immunology, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Hsiu-Han Fan
- Institute of Microbiology and Immunology, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Ya-Gin Chang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan; Taiwan International Graduate Program in Interdisciplinary Neuroscience, National Yang Ming Chiao Tung University and Academia Sinica, Taipei, Taiwan
| | - Hui-Kuei Cheng
- Institute of Microbiology and Immunology, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Shen-Yan Huang
- Institute of Microbiology and Immunology, National Yang Ming Chiao Tung University, Taipei, Taiwan; Biomedical Industry Ph.D. Program, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Hsin-Chuan Lin
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Yan-Hua Lee
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Tzu-Hsiang Shen
- Institute of Microbiology and Immunology, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Bing-Yu Hung
- Institute of Microbiology and Immunology, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Jin-Wu Tsai
- Institute of Brain Science, National Yang Ming Chiao Tung University, Taipei, Taiwan; Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Ivan Dzhagalov
- Institute of Microbiology and Immunology, National Yang Ming Chiao Tung University, Taipei, Taiwan; Biomedical Industry Ph.D. Program, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Irene Han-Juo Cheng
- Institute of Brain Science, National Yang Ming Chiao Tung University, Taipei, Taiwan; Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Chun-Jung Lin
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Yijuang Chern
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Chia-Lin Hsu
- Institute of Microbiology and Immunology, National Yang Ming Chiao Tung University, Taipei, Taiwan; Taiwan International Graduate Program in Molecular Medicine, National Yang Ming Chiao Tung University and Academia Sinica, Taipei, Taiwan; Biomedical Industry Ph.D. Program, National Yang Ming Chiao Tung University, Taipei, Taiwan.
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23
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Marino AL, Rex TS, Harrison FE. Modulation of microglia activation by the ascorbic acid transporter SVCT2. Brain Behav Immun 2024; 120:557-570. [PMID: 38972487 DOI: 10.1016/j.bbi.2024.07.003] [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: 04/02/2024] [Revised: 06/04/2024] [Accepted: 07/04/2024] [Indexed: 07/09/2024] Open
Abstract
Neuroinflammation is a major characteristic of pathology in several neurodegenerative diseases. Microglia, the brain's resident myeloid cells, shift between activation states under neuroinflammatory conditions, both responding to, but also driving damage in the brain. Vitamin C (ascorbate) is an essential antioxidant for central nervous system function that may have a specific role in the neuroinflammatory response. Uptake of ascorbate throughout the central nervous system is facilitated by the sodium-dependent vitamin C transporter 2 (SVCT2). SVCT2 transports the reduced form of ascorbate into neurons and microglia, however the contribution of altered SVCT2 expression to the neuroinflammatory response in microglia is not well understood. In this study we demonstrate that SVCT2 expression modifies microglial response, as shown through changes in cell morphology and mRNA expression, following a mild traumatic brain injury (mTBI) in mice with decreased or increased expression of SVCT2. Results were supported by in vitro studies in an immortalized microglial cell line and in primary microglial cultures derived from SVCT2-heterozygous and transgenic animals. Overall, this work demonstrates the importance of SVCT2 and ascorbate in modulating the microglial response to mTBI and suggests a potential role for both in response to neuroinflammatory challenges.
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Affiliation(s)
- Amanda L Marino
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN, United States
| | - Tonia S Rex
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN, United States; Division of Ophthalmology & Visual Sciences, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Fiona E Harrison
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN, United States; Division of Diabetes, Endocrinology, and Metabolism, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States.
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24
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Soraci L, Corsonello A, Paparazzo E, Montesanto A, Piacenza F, Olivieri F, Gambuzza ME, Savedra EV, Marino S, Lattanzio F, Biscetti L. Neuroinflammaging: A Tight Line Between Normal Aging and Age-Related Neurodegenerative Disorders. Aging Dis 2024; 15:1726-1747. [PMID: 38300639 PMCID: PMC11272206 DOI: 10.14336/ad.2023.1001] [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: 08/12/2023] [Accepted: 10/01/2023] [Indexed: 02/02/2024] Open
Abstract
Aging in the healthy brain is characterized by a low-grade, chronic, and sterile inflammatory process known as neuroinflammaging. This condition, mainly consisting in an up-regulation of the inflammatory response at the brain level, contributes to the pathogenesis of age-related neurodegenerative disorders. Development of this proinflammatory state involves the interaction between genetic and environmental factors, able to induce age-related epigenetic modifications. Indeed, the exposure to environmental compounds, drugs, and infections, can contribute to epigenetic modifications of DNA methylome, histone fold proteins, and nucleosome positioning, leading to epigenetic modulation of neuroinflammatory responses. Furthermore, some epigenetic modifiers, which combine and interact during the life course, can contribute to modeling of epigenome dynamics to sustain, or dampen the neuroinflammatory phenotype. The aim of this review is to summarize current knowledge about neuroinflammaging with a particular focus on epigenetic mechanisms underlying the onset and progression of neuroinflammatory cascades in the central nervous system; furthermore, we describe some diagnostic biomarkers that may contribute to increase diagnostic accuracy and help tailor therapeutic strategies in patients with neurodegenerative diseases.
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Affiliation(s)
- Luca Soraci
- Unit of Geriatric Medicine, Italian National Research Center of Aging (IRCCS INRCA), Cosenza, Italy.
| | - Andrea Corsonello
- Unit of Geriatric Medicine, Italian National Research Center of Aging (IRCCS INRCA), Cosenza, Italy.
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende, Italy.
| | - Ersilia Paparazzo
- Department of Biology, Ecology and Earth Sciences, University of Calabria, Rende, Italy.
| | - Alberto Montesanto
- Department of Biology, Ecology and Earth Sciences, University of Calabria, Rende, Italy.
| | - Francesco Piacenza
- Advanced Technology Center for Aging Research, Italian National Research Center of Aging (IRCCS INRCA), IRCCS INRCA, Ancona, Italy.
| | - Fabiola Olivieri
- Department of Clinical and Molecular Sciences, Università Politecnica delle Marche, Ancona, Italy.
- Clinic of Laboratory and Precision Medicine, Italian National Research Center of Aging (IRCCS INRCA), Ancona, Italy.
| | | | | | - Silvia Marino
- IRCCS Centro Neurolesi "Bonino-Pulejo”, Messina, Italy.
| | | | - Leonardo Biscetti
- Section of Neurology, Italian National Research Center on Aging (IRCCS INRCA), Ancona, Italy.
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25
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Hu A, Schmidt MHH, Heinig N. Microglia in retinal angiogenesis and diabetic retinopathy. Angiogenesis 2024; 27:311-331. [PMID: 38564108 PMCID: PMC11303477 DOI: 10.1007/s10456-024-09911-1] [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: 02/18/2024] [Indexed: 04/04/2024]
Abstract
Diabetic retinopathy has a high probability of causing visual impairment or blindness throughout the disease progression and is characterized by the growth of new blood vessels in the retina at an advanced, proliferative stage. Microglia are a resident immune population in the central nervous system, known to play a crucial role in regulating retinal angiogenesis in both physiological and pathological conditions, including diabetic retinopathy. Physiologically, they are located close to blood vessels and are essential for forming new blood vessels (neovascularization). In diabetic retinopathy, microglia become widely activated, showing a distinct polarization phenotype that leads to their accumulation around neovascular tufts. These activated microglia induce pathogenic angiogenesis through the secretion of various angiogenic factors and by regulating the status of endothelial cells. Interestingly, some subtypes of microglia simultaneously promote the regression of neovascularization tufts and normal angiogenesis in neovascularization lesions. Modulating the state of microglial activation to ameliorate neovascularization thus appears as a promising potential therapeutic approach for managing diabetic retinopathy.
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Affiliation(s)
- Aiyan Hu
- Institute of Anatomy, Medical Faculty Carl Gustav Carus, Technische Universität Dresden School of Medicine, Fetscherstr 74, 01307, Dresden, Germany
| | - Mirko H H Schmidt
- Institute of Anatomy, Medical Faculty Carl Gustav Carus, Technische Universität Dresden School of Medicine, Fetscherstr 74, 01307, Dresden, Germany.
| | - Nora Heinig
- Institute of Anatomy, Medical Faculty Carl Gustav Carus, Technische Universität Dresden School of Medicine, Fetscherstr 74, 01307, Dresden, Germany.
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26
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Romenskaja D, Jonavičė U, Pivoriūnas A. Extracellular vesicles promote autophagy in human microglia through lipid raft-dependent mechanisms. FEBS J 2024; 291:3706-3722. [PMID: 38840471 DOI: 10.1111/febs.17192] [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: 07/05/2023] [Revised: 02/05/2024] [Accepted: 05/22/2024] [Indexed: 06/07/2024]
Abstract
Autophagy dysfunction has been closely related with pathogenesis of many neurodegenerative diseases and therefore represents a potential therapeutic target. Extracellular vesicles (EVs) may act as potent anti-inflammatory agents and also modulators of autophagy in target cells. However, the molecular mechanisms by which EVs modulate autophagy flux in human microglia remain largely unexplored. In the present study, we investigated the effects of EVs derived from human oral mucosa stem cells on the autophagy in human microglia. We demonstrate that EVs promoted autophagy and autophagic flux in human microglia and that this process was dependent on the integrity of lipid rafts. Lipopolysaccharide (LPS) also activated autophagy, but combined treatment with EVs and LPS suppressed autophagy response, indicating interference between these signaling pathways. Blockage of Toll-like receptor 4 (TLR4) with anti-TLR4 antibody suppressed EV-induced autophagy. Furthermore, inhibition of the EV-associated heat shock protein (HSP70) chaperone which is one of the endogenous ligands of the TLR4 also suppressed EV-induced lipid raft formation and autophagy. Pre-treatment of microglia with a selective inhibitor of αvβ3/αvβ5 integrins cilengitide inhibited EV-induced autophagy. Finally, blockage of purinergic P2X4 receptor (P2X4R) with selective inhibitor 5-BDBD also suppressed EV-induced autophagy. In conclusion, we demonstrate that EVs activate autophagy in human microglia through interaction with HSP70/TLR4, αVβ3/αVβ5, and P2X4R signaling pathways and that these effects depend on the integrity of lipid rafts. Our findings could be used to develop new therapeutic strategies targeting disease-associated microglia.
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Affiliation(s)
- Diana Romenskaja
- Department of Stem Cell Biology, State Research Institute Centre for Innovative Medicine, Vilnius, Lithuania
| | - Ugnė Jonavičė
- Department of Stem Cell Biology, State Research Institute Centre for Innovative Medicine, Vilnius, Lithuania
| | - Augustas Pivoriūnas
- Department of Stem Cell Biology, State Research Institute Centre for Innovative Medicine, Vilnius, Lithuania
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27
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Rotaru-Zăvăleanu AD, Dinescu VC, Aldea M, Gresita A. Hydrogel-Based Therapies for Ischemic and Hemorrhagic Stroke: A Comprehensive Review. Gels 2024; 10:476. [PMID: 39057499 PMCID: PMC11276304 DOI: 10.3390/gels10070476] [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: 06/07/2024] [Revised: 07/12/2024] [Accepted: 07/16/2024] [Indexed: 07/28/2024] Open
Abstract
Stroke remains the second leading cause of death and a major cause of disability worldwide, significantly impacting individuals, families, and healthcare systems. This neurological emergency can be triggered by ischemic events, including small vessel arteriolosclerosis, cardioembolism, and large artery atherothromboembolism, as well as hemorrhagic incidents resulting from macrovascular lesions, venous sinus thrombosis, or vascular malformations, leading to significant neuronal damage. The resultant motor impairment, cognitive dysfunction, and emotional disturbances underscore the urgent need for effective therapeutic interventions. Recent advancements in biomaterials, particularly hydrogels, offer promising new avenues for stroke management. Hydrogels, composed of three-dimensional networks of hydrophilic polymers, are notable for their ability to absorb and retain substantial amounts of water. Commonly used polymers in hydrogel formulations include natural polymers like alginate, chitosan, and collagen, as well as synthetic polymers such as polyethylene glycol (PEG), polyvinyl alcohol (PVA), and polyacrylamide. Their customizable characteristics-such as their porosity, swelling behavior, mechanical strength, and degradation rates-make hydrogels ideal for biomedical applications, including drug delivery, cell delivery, tissue engineering, and the controlled release of therapeutic agents. This review comprehensively explores hydrogel-based approaches to both ischemic and hemorrhagic stroke therapy, elucidating the mechanisms by which hydrogels provide neuroprotection. It covers their application in drug delivery systems, their role in reducing inflammation and secondary injury, and their potential to support neurogenesis and angiogenesis. It also discusses current advancements in hydrogel technology and the significant challenges in translating these innovations from research into clinical practice. Additionally, it emphasizes the limited number of clinical trials utilizing hydrogel therapies for stroke and addresses the associated limitations and constraints, underscoring the need for further research in this field.
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Affiliation(s)
- Alexandra-Daniela Rotaru-Zăvăleanu
- Department of Epidemiology, University of Medicine and Pharmacy of Craiova, 2-4 Petru Rares Str., 200349 Craiova, Romania;
- Experimental Research Centre for Normal and Pathological Aging, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania;
| | - Venera Cristina Dinescu
- Department of Health Promotion and Occupational Medicine, University of Medicine and Pharmacy of Craiova, 2–4 Petru Rares Str., 200349 Craiova, Romania
| | - Madalina Aldea
- Psychiatry Department, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Andrei Gresita
- Experimental Research Centre for Normal and Pathological Aging, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania;
- Department of Biomedical Sciences, New York Institute of Technology, College of Osteopathic Medicine, Old Westbury, NY 115680, USA
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28
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Puthenparampil M, Basili E, Ponzano M, Mauceri VA, Miscioscia A, Pilotto E, Perini P, Rinaldi F, Bovis F, Gallo P. Hyper-reflective foci changes in RRMS under natalizumab therapy. Front Immunol 2024; 15:1421755. [PMID: 39076978 PMCID: PMC11284017 DOI: 10.3389/fimmu.2024.1421755] [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: 04/22/2024] [Accepted: 06/27/2024] [Indexed: 07/31/2024] Open
Abstract
Introduction Microglia (MG) is suggested to play an immunopathological role of in Multiple Sclerosis (MS). Since hyper-reflective foci (HRF) might mark MG activation, in vivo analysis by Optic Coherence Tomography (OCT) in MS patients under disease modifying therapies may help to clarify MS immunopathology as well as drug's mechanism of intrathecal action. Objective To analyze HRF in patients treated with Natalizumab (NTZ), a high efficacy therapy for MS. Materials and methods The effect of NTZ on the retina of 36 Relapsing-Remitting MS patients was investigated in a prospective, single-center study. OCT was performed immediately before the first infusion and then between infusion 3 and 4, infusion 6 and 7, infusion 11 and 13. Peripapillary and macular scans were acquired, evaluating peripapillary RNFL thickness, macular volumes (vertical scans), and HRF count (horizontal scan) in Ganglion Cell Layer (GCL), Inner Plexiform Layer (IPL) and Inner Nuclear Layer (INL). Clinical examination was performed every six months. Results HRF count significantly increased under NTZ therapy (p<0.001) in both GCL (18.85 ± 6.93 at baseline, 28.24 ± 9.55 after 12 months) and IPL (25.73 ± 7.03 at baseline, 33.21 ± 8.50 after 12 months) but remained stable in INL (33.65 ± 7.76 at baseline, 36.06 ± 6.86 after 12 months, p=0.87), while no relevant modification of pRNFL and macular volumes were observed during the study. EDSS remained stable and no clinical relapse was observed between month 6 and 12. Conclusion In RRMS NTZ affects HRF count in GCL and IPL, but not in INL, suggesting that NTZ does not impact on some aspects of MS immunopathology.
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Affiliation(s)
- Marco Puthenparampil
- Department of Neurosciences, University of Padua, Padua, Italy
- Multiple Sclerosis Centre, Azienda Ospedaliera di Padova, Padua, Italy
| | - Elisa Basili
- Department of Neurosciences, University of Padua, Padua, Italy
- Multiple Sclerosis Centre, Azienda Ospedaliera di Padova, Padua, Italy
| | - Marta Ponzano
- Department of Health Sciences, Section of Biostatistics, University of Genova, Genova, Italy
| | - Valentina Annamaria Mauceri
- Department of Neurosciences, University of Padua, Padua, Italy
- Multiple Sclerosis Centre, Azienda Ospedaliera di Padova, Padua, Italy
| | | | | | - Paola Perini
- Department of Neurosciences, University of Padua, Padua, Italy
- Multiple Sclerosis Centre, Azienda Ospedaliera di Padova, Padua, Italy
| | - Francesca Rinaldi
- Department of Neurosciences, University of Padua, Padua, Italy
- Multiple Sclerosis Centre, Azienda Ospedaliera di Padova, Padua, Italy
| | - Francesca Bovis
- Department of Health Sciences, Section of Biostatistics, University of Genova, Genova, Italy
| | - Paolo Gallo
- Department of Neurosciences, University of Padua, Padua, Italy
- Multiple Sclerosis Centre, Azienda Ospedaliera di Padova, Padua, Italy
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Weindel CG, Ellzey LM, Coleman AK, Patrick KL, Watson RO. LRRK2 kinase activity restricts NRF2-dependent mitochondrial protection in microglia. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.07.09.602769. [PMID: 39026883 PMCID: PMC11257505 DOI: 10.1101/2024.07.09.602769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
Mounting evidence supports a critical role for central nervous system (CNS) glial cells in neuroinflammation and neurodegenerative diseases, including Alzheimer's disease (AD), Parkinson's Disease (PD), Multiple Sclerosis (MS), as well as neurovascular ischemic stroke. Previously, we found that loss of the PD-associated gene leucine-rich repeat kinase 2 (Lrrk2) in macrophages, peripheral innate immune cells, induced mitochondrial stress and elevated basal expression of type I interferon (IFN) stimulated genes (ISGs) due to chronic mitochondrial DNA engagement with the cGAS/STING DNA sensing pathway. Here, we report that loss of LRRK2 results in a paradoxical response in microglial cells, a CNS-specific macrophage population. In primary murine microglia and microglial cell lines, loss of Lrrk2 reduces tonic IFN signaling leading to a reduction in ISG expression. Consistent with reduced type I IFN, mitochondria from Lrrk2 KO microglia are protected from stress and have elevated metabolism. These protective phenotypes involve upregulation of NRF2, an important transcription factor in the response to oxidative stress and are restricted by LRRK2 kinase activity. Collectively, these findings illustrate a dichotomous role for LRRK2 within different immune cell populations and give insight into the fundamental differences between immune regulation in the CNS and the periphery.
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Affiliation(s)
- Chi G Weindel
- Department of Microbial Pathogenesis and Immunology, Texas A&M Health Science Center, Texas A&M School of Medicine, TX, 77807, USA
| | - Lily M Ellzey
- Department of Microbial Pathogenesis and Immunology, Texas A&M Health Science Center, Texas A&M School of Medicine, TX, 77807, USA
| | - Aja K Coleman
- Department of Microbial Pathogenesis and Immunology, Texas A&M Health Science Center, Texas A&M School of Medicine, TX, 77807, USA
| | - Kristin L Patrick
- Department of Microbial Pathogenesis and Immunology, Texas A&M Health Science Center, Texas A&M School of Medicine, TX, 77807, USA
| | - Robert O Watson
- Department of Microbial Pathogenesis and Immunology, Texas A&M Health Science Center, Texas A&M School of Medicine, TX, 77807, USA
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Hameed SS, Bodi NE, Miller RC, Sharma TP. Neuritin 1 Drives Therapeutic Preservation of Retinal Ganglion Cells in an Ex Vivo Human Glaucoma Model. J Ocul Pharmacol Ther 2024. [PMID: 38995841 DOI: 10.1089/jop.2024.0041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2024] Open
Abstract
Purpose: Glaucoma is a leading cause of irreversible blindness. Glaucomatous intraocular pressure (IOP) triggers deleterious effects, including gliosis, optic nerve (ON) axonal retraction, neurotrophic factor deprivation, inflammation, and other pathological events, leading to retinal ganglion cell (RGC) loss. Trophic factor impairment enhances RGC apoptosis susceptibility. Neuritin 1 (NRN1), a neurotrophic protein downstream of various neurotrophins, exhibited RGC protection and regeneration in axotomy models. We evaluated human recombinant NRN1's impact on human RGCs cultured in pressurized conditions within the ex vivo translaminar autonomous system to simulate glaucoma pathogenesis. Methods: Human glaucomatous and non-glaucomatous donor eyes were obtained from eye banks according to the Declaration of Helsinki. Initially, we evaluated NRN1and RGC marker expression in glaucoma and non-glaucomatous retina to determine the NRN1 level and its association with RGC loss. Further, we evaluated NRN1's therapeutic potential by treating pressurized human eyes at normal and high IOP for seven days. Retina, ON, and conditioned medium were analyzed for RGC survival (THY1, RBPMS), gliosis (GFAP), apoptosis (CASP3, CASP7), and extracellular matrix deposition (COLIV, FN) by qRT-PCR and western blotting. Paraphenylenediamine staining assessed ON axonal degeneration, whereas ex vivo electroretinogram assessed retinal activity. Results: Glaucomatous retinas exhibited significant reductions in both NRN1 (*p = 0.007, n = 5) and RGC marker expression (*p = 0.04, n = 5). NRN1 treatment reduced gliosis, extracellular matrix deposition, ON degeneration, and increased retinal activity in pressure-perfused eyes. Conclusions: Our study confirms that NRN1 enhances human RGC survival and improves retinal function in degenerative conditions, substantiating it as a promising candidate for rescuing human RGCs from degeneration.
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Affiliation(s)
- Shahna S Hameed
- Department of Ophthalmology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Nicole E Bodi
- Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Ryan C Miller
- Department of Ophthalmology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Tasneem P Sharma
- Department of Ophthalmology, Indiana University School of Medicine, Indianapolis, Indiana
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Rai SP, Ansari AH, Singh D, Singh S. Coffee, antioxidants, and brain inflammation. PROGRESS IN BRAIN RESEARCH 2024; 289:123-150. [PMID: 39168577 DOI: 10.1016/bs.pbr.2024.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/23/2024]
Abstract
Coffee is the most popular beverage in the world and, aside from tea and water, the most often consumed caffeine-containing beverage. Because of its high caffeine concentration, it is typically classified as a stimulant. There are other bioactive ingredients in coffee besides caffeine. The coffee beverage is a blend of several bioactive substances, including diterpenes (cafestol and kahweol), alkaloids (caffeine and trigonelline), and polyphenols (particularly chlorogenic acids in green beans and caffeic acid in roasted coffee beans). Caffeine has also been linked to additional beneficial benefits such as antioxidant and anti-inflammatory properties, which change cellular redox and inflammatory status in a dose-dependent manner. Pyrocatechol, a constituent of roasted coffee that is created when chlorogenic acid is thermally broken down, has anti-inflammatory properties as well. It is postulated that coffee consumption reduces neuroinflammation, which is intimately linked to the onset of neurodegenerative disorders like Alzheimer's disease (AD), Parkinson's disease (PD), multiple sclerosis (MS), amyotrophic lateral sclerosis (ALS), and Huntington's disease (HD). This review provides an overview of the most recent studies regarding coffee's possible benefits in preventing brain inflammation and neurodegenerative disorders.
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Affiliation(s)
- Swayam Prabha Rai
- Department of Zoology, S.S. Khanna Girls' Degree College (A Constituent College of University of Allahabad), Prayagraj, Uttar Pradesh, India
| | - Atifa Haseeb Ansari
- Department of Zoology, S.S. Khanna Girls' Degree College (A Constituent College of University of Allahabad), Prayagraj, Uttar Pradesh, India
| | - Durgesh Singh
- Department of Zoology, S.S. Khanna Girls' Degree College (A Constituent College of University of Allahabad), Prayagraj, Uttar Pradesh, India
| | - Sippy Singh
- Department of Zoology, S.S. Khanna Girls' Degree College (A Constituent College of University of Allahabad), Prayagraj, Uttar Pradesh, India.
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Przepiórska-Drońska K, Wnuk A, Pietrzak-Wawrzyńska BA, Łach A, Biernat W, Wójtowicz AK, Kajta M. Amorfrutin B Compromises Hypoxia/Ischemia-induced Activation of Human Microglia in a PPARγ-dependent Manner: Effects on Inflammation, Proliferation Potential, and Mitochondrial Status. J Neuroimmune Pharmacol 2024; 19:34. [PMID: 38949694 PMCID: PMC11217078 DOI: 10.1007/s11481-024-10135-9] [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: 12/22/2023] [Accepted: 06/08/2024] [Indexed: 07/02/2024]
Abstract
Amorfrutin B is a selective PPARγ modulator that we demonstrated to be a promising neuroprotective compound in cellular models of stroke and perinatal asphyxia. Although neuronal mechanisms of amorfrutin B-evoked neuroprotection have been identified, none of them reflects the actions of the compound on microglia, which play a pivotal role in brain response to hypoxia/ischemia. Here, we provide evidence for amorfrutin B-induced effects on human microglia subjected to hypoxia/ischemia; the compound counteracts inflammation, and influences mitochondrial status and proliferation potential in a PPARγ-dependent manner. Post-treatment with amorfrutin B decreased the IBA1 fluorescence intensity, reduced caspase-1 activity, and downregulated IL1B/IL-1β and TNFA but not IL10/IL-10 expression, which was upregulated. Amorfrutin B also stimulated PPARγ signaling, as evidenced by increased mRNA and/or protein levels of PPARγ and PGC1α. In addition, amorfrutin B reversed the hypoxia/ischemia-evoked effects on mitochondria-related parameters, such as mitochondrial membrane potential, BCL2/BCL2 expression and metabolic activity, which were correlated with diminished proliferation potential of microglia. Interestingly, the inhibitory effect of amorfrutin B on the proliferation potential and mitochondrial function of microglia is opposite to the stimulatory effect of amorfrutin B on mouse neuronal survival, as evidenced by increased neuronal viability and reduced neurodegeneration. In summary, this study showed for the first time that amorfrutin B compromises hypoxia/ischemia-induced activation of human microglia in a PPARγ-dependent manner, which involves inhibiting inflammation, normalizing mitochondrial status, and controlling proliferation potential. These data extend the protective potential of amorfrutin B in the pharmacotherapy of hypoxic/ischemic brain injury, targeting not only neurons but also activated microglia.
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Affiliation(s)
- Karolina Przepiórska-Drońska
- Maj Institute of Pharmacology, Polish Academy of Sciences, Department of Pharmacology, Laboratory of Neuropharmacology and Epigenetics, Smetna Street 12, 31-343, Krakow, Poland
| | - Agnieszka Wnuk
- Maj Institute of Pharmacology, Polish Academy of Sciences, Department of Pharmacology, Laboratory of Neuropharmacology and Epigenetics, Smetna Street 12, 31-343, Krakow, Poland
| | - Bernadeta Angelika Pietrzak-Wawrzyńska
- Maj Institute of Pharmacology, Polish Academy of Sciences, Department of Pharmacology, Laboratory of Neuropharmacology and Epigenetics, Smetna Street 12, 31-343, Krakow, Poland
| | - Andrzej Łach
- Maj Institute of Pharmacology, Polish Academy of Sciences, Department of Pharmacology, Laboratory of Neuropharmacology and Epigenetics, Smetna Street 12, 31-343, Krakow, Poland
| | - Weronika Biernat
- Faculty of Animal Sciences, Department of Nutrition, Animal Biotechnology and Fisheries, University of Agriculture, Adama Mickiewicza 24/28, 30-059, Krakow, Poland
| | - Anna Katarzyna Wójtowicz
- Faculty of Animal Sciences, Department of Nutrition, Animal Biotechnology and Fisheries, University of Agriculture, Adama Mickiewicza 24/28, 30-059, Krakow, Poland
| | - Małgorzata Kajta
- Maj Institute of Pharmacology, Polish Academy of Sciences, Department of Pharmacology, Laboratory of Neuropharmacology and Epigenetics, Smetna Street 12, 31-343, Krakow, Poland.
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Wang Y, Ni P, Zhuang D, Zhou P, Zhu F, Yin D, Zhu R, Mei B, Hu S. Early hyperbaric oxygen therapy through regulating the HIF-1α signaling pathway attenuates Neuroinflammation and behavioral deficits in a mouse model of Sepsis-associated encephalopathy. J Neuroimmunol 2024; 391:578367. [PMID: 38735091 DOI: 10.1016/j.jneuroim.2024.578367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 04/18/2024] [Accepted: 05/05/2024] [Indexed: 05/14/2024]
Abstract
BACKGROUND Sepsis-associated encephalopathy (SAE) presents a significant clinical challenge, associated with increased mortality and healthcare expenses. Hyperbaric oxygen therapy (HBOT), involving inhaling pure or highly concentrated oxygen under pressures exceeding one atmosphere, has demonstrated neuroprotective effects in various conditions. However, the precise mechanisms underlying its protective actions against sepsis-associated brain injury remain unclear. This study aimed to determine whether HBOT protects against SAE and to elucidate the impact of the hypoxia-inducible factor-1α (HIF-1α) signaling pathway on SAE. METHODS The experiment consisted of two parts. In the first part, C57BL/6 J male mice were divided into five groups using a random number table method: control group, sham surgery group, sepsis group, HBOT + sepsis group, and HBOT + sham surgery group. In the subsequent part, C57BL/6 J male mice were divided into four groups: sepsis group, HBOT + sepsis group, HIF-1α + HBOT + sepsis group, and HIF-1α + sepsis group. Sepsis was induced via cecal ligation and puncture (CLP). Hyperbaric oxygen therapy was administered at 1 h and 4 h post-CLP. After 24 h, blood and hippocampal tissue were collected for cytokine measurements. HIF-1α, TNF-α, IL-1β, and IL-6 expression were assessed via ELISA and western blotting. Microglial expression was determined by immunofluorescence. Blood-brain barrier permeability was quantified using Evans Blue. Barnes maze and fear conditioning were conducted 14 days post-CLP to evaluate learning and memory. RESULTS Our findings reveal that CLP-induced hippocampus-dependent cognitive deficits coincided with elevated HIF-1α and increased TNF-α, IL-1β, and IL-6 levels in both blood and hippocampus. Observable activation of microglial cells in the hippocampus and increased blood-brain barrier (BBB) permeability were also evident. HBOT mitigated HIF-1α, TNF-α, IL-1β, and IL-6 levels, attenuated microglial activation in the hippocampus, and significantly improved learning and memory deficits in CLP-exposed mice. Additionally, these outcomes were corroborated by injecting a lentivirus that overexpressed HIF-1α into the hippocampal region of the mice. CONCLUSION HIF-1α escalation induced peripheral and central inflammatory factors, promoting microglial activation, BBB impairment, and cognitive dysfunction. However, HBOT ameliorated these effects by reducing HIF-1α levels in Sepsis-Associated Encephalopathy.
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Affiliation(s)
- Yan Wang
- School of Nursing, Anhui Medical University, Hefei, Anhui Province, China; The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China
| | - Ping Ni
- School of Nursing, Anhui Medical University, Hefei, Anhui Province, China
| | - Dongmei Zhuang
- School of Nursing, Anhui Medical University, Hefei, Anhui Province, China
| | - Peng Zhou
- The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China
| | - Furong Zhu
- School of Nursing, Anhui Medical University, Hefei, Anhui Province, China
| | - Danqiao Yin
- The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China
| | - Rui Zhu
- The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China
| | - Bin Mei
- Department of Anesthesiology, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China.
| | - Shaohua Hu
- Department of Nursing, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China.
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Naik B, Sasikumar J, Das SP. From Skin and Gut to the Brain: The Infectious Journey of the Human Commensal Fungus Malassezia and Its Neurological Consequences. Mol Neurobiol 2024:10.1007/s12035-024-04270-w. [PMID: 38871941 DOI: 10.1007/s12035-024-04270-w] [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: 01/12/2024] [Accepted: 05/27/2024] [Indexed: 06/15/2024]
Abstract
The human mycobiome encompasses diverse communities of fungal organisms residing within the body and has emerged as a critical player in shaping health and disease. While extensive research has focused on the skin and gut mycobiome, recent investigations have pointed toward the potential role of fungal organisms in neurological disorders. Among those fungal organisms, the presence of the commensal fungus Malassezia in the brain has created curiosity because of its commensal nature and primary association with the human skin and gut. This budding yeast is responsible for several diseases, such as Seborrheic dermatitis, Atopic dermatitis, Pityriasis versicolor, Malassezia folliculitis, dandruff, and others. However recent findings surprisingly show the presence of Malassezia DNA in the brain and have been linked to diseases like Alzheimer's disease, Parkinson's disease, Multiple sclerosis, and Amyotrophic lateral sclerosis. The exact role of Malassezia in these disorders is unknown, but its ability to infect human cells, travel through the bloodstream, cross the blood-brain barrier, and reside along with the lipid-rich neuronal cells are potential mechanisms responsible for pathogenesis. This also includes the induction of pro-inflammatory cytokines, disruption of the blood-brain barrier, gut-microbe interaction, and accumulation of metabolic changes in the brain environment. In this review, we discuss these key findings from studies linking Malassezia to neurological disorders, emphasizing the complex and multifaceted nature of these cases. Furthermore, we discuss potential mechanisms through which Malassezia might contribute to the development of neurological conditions. Future investigations will open up new avenues for our understanding of the fungal gut-brain axis and how it influences human behavior. Collaborative research efforts among microbiologists, neuroscientists, immunologists, and clinicians hold promise for unraveling the enigmatic connections between human commensal Malassezia and neurological disorders.
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Affiliation(s)
- Bharati Naik
- Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, 575018, India
| | - Jayaprakash Sasikumar
- Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, 575018, India
| | - Shankar Prasad Das
- Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, 575018, India.
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Lu C, Hyde DR. Cytokines IL-1β and IL-10 are required for Müller glia proliferation following light damage in the adult zebrafish retina. Front Cell Dev Biol 2024; 12:1406330. [PMID: 38938553 PMCID: PMC11208712 DOI: 10.3389/fcell.2024.1406330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Accepted: 05/16/2024] [Indexed: 06/29/2024] Open
Abstract
Zebrafish possess the ability to regenerate dying neurons in response to retinal injury, with both Müller glia and microglia playing integral roles in this response. Resident Müller glia respond to damage by reprogramming and undergoing an asymmetric cell division to generate a neuronal progenitor cell, which continues to proliferate and differentiate into the lost neurons. In contrast, microglia become reactive, phagocytose dying cells, and release inflammatory signals into the surrounding tissue following damage. In recent years, there has been increased attention on elucidating the role that microglia play in regulating retinal regeneration. Here we demonstrate that inflammatory cytokines are differentially expressed during retinal regeneration, with the expression of a subset of pro-inflammatory cytokine genes upregulated shortly after light damage and the expression of a different subset of cytokine genes subsequently increasing. We demonstrate that both cytokine IL-1β and IL-10 are essential for Müller glia proliferation in the light-damaged retina. While IL-1β is sufficient to induce Müller glia proliferation in an undamaged retina, expression of IL-10 in undamaged retinas only induces Müller glia to express gliotic markers. Together, these findings demonstrate the essential role of inflammatory cytokines IL-1β and IL-10 on Müller glia proliferation following light damage in adult zebrafish.
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Affiliation(s)
| | - David R. Hyde
- Department of Biological Sciences, Center for Stem Cells and Regenerative Medicine, and Center for Zebrafish Research, Galvin Life Sciences Building, University of Notre Dame, Notre Dame, IN, United States
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Matt SM, Nolan R, Manikandan S, Agarwal Y, Channer B, Oteju O, Daniali M, Canagarajah JA, LuPone T, Mompho K, Runner K, Nickoloff-Bybel E, Li B, Niu M, Schlachetzki JCM, Fox HS, Gaskill PJ. Dopamine-driven Increase in IL-1β in Myeloid Cells is Mediated by Differential Dopamine Receptor Expression and Exacerbated by HIV. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.09.598137. [PMID: 38915663 PMCID: PMC11195146 DOI: 10.1101/2024.06.09.598137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
The catecholamine neurotransmitter dopamine is classically known for regulation of central nervous system (CNS) functions such as reward, movement, and cognition. Increasing evidence also indicates that dopamine regulates critical functions in peripheral organs and is an important immunoregulatory factor. We have previously shown that dopamine increases NF-κB activity, inflammasome activation, and the production of inflammatory cytokines such as IL-1β in human macrophages. As myeloid lineage cells are central to the initiation and resolution of acute inflammatory responses, dopamine-mediated dysregulation of these functions could both impair the innate immune response and exacerbate chronic inflammation. However, the exact pathways by which dopamine drives myeloid inflammation are not well defined, and studies in both rodent and human systems indicate that dopamine can impact the production of inflammatory mediators through both D1-like dopamine receptors (DRD1, DRD5) and D2-like dopamine receptors (DRD2, DRD3, and DRD4). Therefore, we hypothesized that dopamine-mediated production of IL-1β in myeloid cells is regulated by the ratio of different dopamine receptors that are activated. Our data in primary human monocyte-derived macrophages (hMDM) indicate that DRD1 expression is necessary for dopamine-mediated increases in IL-1β, and that changes in the expression of DRD2 and other dopamine receptors can alter the magnitude of the dopamine-mediated increase in IL-1β. Mature hMDM have a high D1-like to D2-like receptor ratio, which is different relative to monocytes and peripheral blood mononuclear cells (PBMCs). We further confirm in human microglia cell lines that a high ratio of D1-like to D2-like receptors promotes dopamine-induced increases in IL-1β gene and protein expression using pharmacological inhibition or overexpression of dopamine receptors. RNA-sequencing of dopamine-treated microglia shows that genes encoding functions in IL-1β signaling pathways, microglia activation, and neurotransmission increased with dopamine treatment. Finally, using HIV as an example of a chronic inflammatory disease that is substantively worsened by comorbid substance use disorders (SUDs) that impact dopaminergic signaling, we show increased effects of dopamine on inflammasome activation and IL-1β in the presence of HIV in both human macrophages and microglia. These data suggest that use of addictive substances and dopamine-modulating therapeutics could dysregulate the innate inflammatory response and exacerbate chronic neuroimmunological conditions like HIV. Thus, a detailed understanding of dopamine-mediated changes in inflammation, in particular pathways regulating IL-1β, will be critical to effectively tailor medication regimens.
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Donahue CC, Resch JE. Concussion and the Sleeping Brain. SPORTS MEDICINE - OPEN 2024; 10:68. [PMID: 38853235 PMCID: PMC11162982 DOI: 10.1186/s40798-024-00736-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 05/25/2024] [Indexed: 06/11/2024]
Abstract
BACKGROUND Emerging research has suggested sleep to be a modifier of the trajectory of concussion recovery in adolescent and adult populations. Despite the growing recognition of the relationship between sleep and concussion, the mechanisms and physiological processes governing this association have yet to be established. MAIN BODY Following a concussion, a pathophysiologic cascade of events occurs, characterized by numerous factors including microglia activation, ionic imbalance, and release of excitatory neurotransmitters. Importantly, each of these factors plays a role in the regulation of the sleep-wake cycle. Therefore, dysregulation of sleep following injury may be a function of the diffuse disruption of cerebral functioning in the wake of both axonal damage and secondary physiological events. As the onset of sleep-related symptoms is highly variable following a concussion, clinicians should be aware of when and how these symptoms present. Post-injury changes in sleep have been reported in the acute, sub-acute, and chronic phases of recovery and can prolong symptom resolution, affect neurocognitive performance, and influence mood state. Though these changes support sleep as a modifier of recovery, limited guidance exists for clinicians or their patients in the management of sleep after concussion. This may be attributed to the fact that research has correlated sleep with concussion recovery but has failed to explain why the correlation exists. Sleep is a complex, multifactorial process and the changes seen in sleep that are seen following concussion are the result of interactions amongst numerous processes that regulate the sleep-wake cycle. SHORT CONCLUSION The assessment and management of sleep by identifying and considering the biological, sociological, and psychological interactions of this multifactorial process will allow for clinicians to address the dynamic nature of changes in sleep following concussion.
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Affiliation(s)
- Catherine C Donahue
- Department of Orthopedics, University of Colorado School of Medicine, Children's Hospital Colorado, 13123 E. 16th Ave, Box 060, 80045, Aurora, CO, USA.
| | - Jacob E Resch
- Department of Kinesiology, University of Virginia, 550 Brandon Ave, Charlottesville, VA, 22908, USA
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Chamera K, Curzytek K, Kamińska K, Leśkiewicz M, Basta-Kaim A. Prenatal Immune Challenge Differentiates the Effect of Aripiprazole and Risperidone on CD200-CD200R and CX3CL1-CX3CR1 Dyads and Microglial Polarization: A Study in Organotypic Cortical Cultures. Life (Basel) 2024; 14:721. [PMID: 38929704 PMCID: PMC11205240 DOI: 10.3390/life14060721] [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: 02/06/2024] [Revised: 04/20/2024] [Accepted: 05/30/2024] [Indexed: 06/28/2024] Open
Abstract
Microglia are the primary innate immune cells of the central nervous system and extensively contribute to brain homeostasis. Dysfunctional or excessive activity of microglia may be associated with several neuropsychiatric disorders, including schizophrenia. Therefore, we examined whether aripiprazole and risperidone could influence the expression of the Cd200-Cd200r and Cx3cl1-Cx3cr1 axes, which are crucial for the regulation of microglial activity and interactions of these cells with neurons. Additionally, we evaluated the impact of these drugs on microglial pro- and anti-inflammatory markers (Cd40, Il-1β, Il-6, Cebpb, Cd206, Arg1, Il-10 and Tgf-β) and cytokine release (IL-6, IL-10). The research was executed in organotypic cortical cultures (OCCs) prepared from the offspring of control rats (control OCCs) or those exposed to maternal immune activation (MIA OCCs), which allows for the exploration of schizophrenia-like disturbances in animals. All experiments were performed under basal conditions and after additional stimulation with lipopolysaccharide (LPS), following the "two-hit" hypothesis of schizophrenia. We found that MIA diminished the mRNA level of Cd200r and affected the OCCs' response to additional LPS exposure in terms of this parameter. LPS downregulated the Cx3cr1 expression and profoundly changed the mRNA levels of pro- and anti-inflammatory microglial markers in both types of OCCs. Risperidone increased Cd200 expression in MIA OCCs, while aripiprazole treatment elevated the gene levels of the Cx3cl1-Cx3cr1 dyad in control OCCs. The antipsychotics limited the LPS-generated increase in the expression of proinflammatory factors (Il-1β and Il-6) and enhanced the mRNA levels of anti-inflammatory components (Cd206 and Tgf-β) of microglial polarization, mostly in the absence of the MIA procedure. Finally, we observed a more pronounced modulating impact of aripiprazole on the expression of pro- and anti-inflammatory cytokines when compared to risperidone in MIA OCCs. In conclusion, our data suggest that MIA might influence microglial activation and crosstalk of microglial cells with neurons, whereas aripiprazole and risperidone could beneficially affect these changes in OCCs.
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Affiliation(s)
| | | | | | | | - Agnieszka Basta-Kaim
- Laboratory of Immunoendocrinology, Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna St., 31-343 Kraków, Poland
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39
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Pereira-Santos AR, Candeias E, Magalhães JD, Empadinhas N, Esteves AR, Cardoso SM. Neuronal control of microglia through the mitochondria. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167167. [PMID: 38626829 DOI: 10.1016/j.bbadis.2024.167167] [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: 02/23/2024] [Accepted: 04/08/2024] [Indexed: 04/21/2024]
Abstract
The microbial toxin β-N-methylamino-L-alanine (BMAA), which is derived from cyanobacteria, targets neuronal mitochondria, leading to the activation of neuronal innate immunity and, consequently, neurodegeneration. Although known to modulate brain inflammation, the precise role of aberrant microglial function in the neurodegenerative process remains elusive. To determine if neurons signal microglial cells, we treated primary cortical neurons with BMAA and then co-cultured them with the N9 microglial cell line. Our observations indicate that microglial cell activation requires initial neuronal priming. Contrary to what was observed in cortical neurons, BMAA was not able to activate inflammatory pathways in N9 cells. We observed that microglial activation is dependent on mitochondrial dysfunction signaled by BMAA-treated neurons. In this scenario, the NLRP3 pro-inflammatory pathway is activated due to mitochondrial impairment in N9 cells. These results demonstrate that microglia activation in the presence of BMAA is dependent on neuronal signaling. This study provides evidence that neurons may trigger microglia activation and subsequent neuroinflammation. In addition, we demonstrate that microglial activation may have a protective role in ameliorating neuronal innate immune activation, at least in the initial phase. This work challenges the current understanding of neuroinflammation by assigning the primary role to neurons.
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Affiliation(s)
- A R Pereira-Santos
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal; Ph.D. Programme in Biomedicine and Experimental Biology (PDBEB), Institute for Interdisciplinary Research, University of Coimbra, Coimbra, Portugal
| | - Emanuel Candeias
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal; IIIUC-Institute for Interdisciplinary Research, University of Coimbra, Coimbra, Portugal
| | - J D Magalhães
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal; Ph.D. Programme in Biomedicine and Experimental Biology (PDBEB), Institute for Interdisciplinary Research, University of Coimbra, Coimbra, Portugal
| | - Nuno Empadinhas
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal; IIIUC-Institute for Interdisciplinary Research, University of Coimbra, Coimbra, Portugal
| | - A Raquel Esteves
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal; IIIUC-Institute for Interdisciplinary Research, University of Coimbra, Coimbra, Portugal
| | - Sandra M Cardoso
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal; Institute of Cellular and Molecular Biology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.
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Freeman C, A S MD, A S P. Unraveling the Intricacies of OPG/RANKL/RANK Biology and Its Implications in Neurological Disorders-A Comprehensive Literature Review. Mol Neurobiol 2024:10.1007/s12035-024-04227-z. [PMID: 38777981 DOI: 10.1007/s12035-024-04227-z] [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: 02/03/2024] [Accepted: 05/09/2024] [Indexed: 05/25/2024]
Abstract
The OPG/RANKL/RANK framework, along with its specific receptors, plays a crucial role in bone remodeling and the functioning of the central nervous system (CNS) and associated disorders. Recent research and investigations provide evidence that the components of osteoprotegerin (OPG), receptor activator of NF-kB ligand (RANKL), and receptor activator of NF-kB (RANK) are expressed in the CNS. The CNS structure encompasses cells involved in neuroinflammation, including local macrophages, inflammatory cells, and microglia that cross the blood-brain barrier. The OPG/RANKL/RANK trio modulates the neuroinflammatory response based on the molecular context. The levels of OPG/RANKL/RANK components can serve as biomarkers in the blood and cerebrospinal fluid. They act as neuroprotectants following brain injuries and also participate in the regulation of body weight, internal body temperature, brain ischemia, autoimmune encephalopathy, and energy metabolism. Although the OPG/RANKL/RANK system is primarily known for its role in bone remodeling, further exploring deeper into its multifunctional nature can uncover new functions and novel drug targets for diseases not previously associated with OPG/RANKL/RANK signaling.
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Affiliation(s)
- Chrisanne Freeman
- Department of Biotechnology, Bishop Heber College, Tamil Nadu, Tiruchirappalli, 620017, India.
| | - Merlyn Diana A S
- Department of Biotechnology, Bishop Heber College, Tamil Nadu, Tiruchirappalli, 620017, India
- Department of Zoology and Research Centre, Lady Doak College, Tamil Nadu, Madurai, 625002, India
| | - Priscilla A S
- Department of Zoology and Research Centre, Lady Doak College, Tamil Nadu, Madurai, 625002, India
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Munan S, Mondal A, Shailja S, Pati S, Samanta A. Unique Synthetic Strategy for Probing in Situ Lysosomal NO for Screening Neuroinflammatory Phenotypes against SARS-CoV-2 RNA in Phagocytotic Microglia. Anal Chem 2024; 96:7479-7486. [PMID: 38689560 DOI: 10.1021/acs.analchem.3c05981] [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: 05/02/2024]
Abstract
In the pathogenesis of microglia, brain immune cells promote nitrergic stress by overproducing nitric oxide (NO), leading to neuroinflammation. Furthermore, NO has been linked to COVID-19 progression, which has caused significant morbidity and mortality. SARS-CoV-2 infection activates inflammation by releasing excess NO and causing cell death in human microglial clone 3 (HMC3). In addition, NO regulates lysosomal functions and complex machinery to neutralize pathogens through phagocytosis. Therefore, developing lysosome-specific NO probes to monitor phagocytosis in microglia during the COVID-19 infection would be a significant study. Herein, a unique synthetic strategy was adopted to develop a NO selective fluorescent probe, PDM-NO, which can discriminate activated microglia from their resting state. The nonfluorescent PDM-NO exhibits a turn-on response toward NO only at lysosomal pH (4.5-5.5). Quantum chemical calculations (DFT/TD-DFT/PCM) and photophysical study revealed that the photoinduced electron transfer (PET) process is pivotal in tuning optical properties. PDM-NO demonstrated good biocompatibility and lysosomal specificity in activated HMC3 cells. Moreover, it can effectively map the dynamics of lysosomal NO against SARS-CoV-2 RNA-induced neuroinflammation in HMC3. Thus, PDM-NO is a potential fluorescent marker for detecting RNA virus infection and monitoring phagocytosis in HMC3.
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Affiliation(s)
- Subrata Munan
- Molecular Sensors and Therapeutics (MST) Research Laboratory, Department of Chemistry, School of Natural Sciences, Shiv Nadar Institution of Eminence Deemed to be University (SNIoE), Delhi NCR, NH 91, Tehsil Dadri, Greater Noida, Uttar Pradesh 201314, India
| | - Abir Mondal
- Department of Life Sciences, School of Natural Sciences, Shiv Nadar Institution of Eminence Deemed to be University (SNIoE), Delhi NCR, NH 91, Tehsil Dadri, Greater Noida, Uttar Pradesh 201314, India
| | - Singh Shailja
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi 110067, India
| | - Soumya Pati
- Department of Life Sciences, School of Natural Sciences, Shiv Nadar Institution of Eminence Deemed to be University (SNIoE), Delhi NCR, NH 91, Tehsil Dadri, Greater Noida, Uttar Pradesh 201314, India
| | - Animesh Samanta
- Molecular Sensors and Therapeutics (MST) Research Laboratory, Department of Chemistry, School of Natural Sciences, Shiv Nadar Institution of Eminence Deemed to be University (SNIoE), Delhi NCR, NH 91, Tehsil Dadri, Greater Noida, Uttar Pradesh 201314, India
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Guadalupi L, Vanni V, Balletta S, Caioli S, De Vito F, Fresegna D, Sanna K, Nencini M, Donninelli G, Volpe E, Mariani F, Battistini L, Stampanoni Bassi M, Gilio L, Bruno A, Dolcetti E, Buttari F, Mandolesi G, Centonze D, Musella A. Interleukin-9 protects from microglia- and TNF-mediated synaptotoxicity in experimental multiple sclerosis. J Neuroinflammation 2024; 21:128. [PMID: 38745307 PMCID: PMC11092167 DOI: 10.1186/s12974-024-03120-9] [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: 02/09/2024] [Accepted: 05/01/2024] [Indexed: 05/16/2024] Open
Abstract
BACKGROUND Multiple sclerosis (MS) is a progressive neurodegenerative disease of the central nervous system characterized by inflammation-driven synaptic abnormalities. Interleukin-9 (IL-9) is emerging as a pleiotropic cytokine involved in MS pathophysiology. METHODS Through biochemical, immunohistochemical, and electrophysiological experiments, we investigated the effects of both peripheral and central administration of IL-9 on C57/BL6 female mice with experimental autoimmune encephalomyelitis (EAE), a model of MS. RESULTS We demonstrated that both systemic and local administration of IL-9 significantly improved clinical disability, reduced neuroinflammation, and mitigated synaptic damage in EAE. The results unveil an unrecognized central effect of IL-9 against microglia- and TNF-mediated neuronal excitotoxicity. Two main mechanisms emerged: first, IL-9 modulated microglial inflammatory activity by enhancing the expression of the triggering receptor expressed on myeloid cells-2 (TREM2) and reducing TNF release. Second, IL-9 suppressed neuronal TNF signaling, thereby blocking its synaptotoxic effects. CONCLUSIONS The data presented in this work highlight IL-9 as a critical neuroprotective molecule capable of interfering with inflammatory synaptopathy in EAE. These findings open new avenues for treatments targeting the neurodegenerative damage associated with MS, as well as other inflammatory and neurodegenerative disorders of the central nervous system.
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Affiliation(s)
- Livia Guadalupi
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, 00133, Italy
- Synaptic Immunopathology Lab, IRCCS San Raffaele Roma, Rome, 00166, Italy
| | - Valentina Vanni
- Synaptic Immunopathology Lab, IRCCS San Raffaele Roma, Rome, 00166, Italy
| | - Sara Balletta
- Unit of Neurology, IRCCS Neuromed, Pozzilli (Is), 86077, Italy
| | - Silvia Caioli
- Unit of Neurology, IRCCS Neuromed, Pozzilli (Is), 86077, Italy
| | | | - Diego Fresegna
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, 00133, Italy
- Synaptic Immunopathology Lab, IRCCS San Raffaele Roma, Rome, 00166, Italy
| | - Krizia Sanna
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, 00133, Italy
| | - Monica Nencini
- Synaptic Immunopathology Lab, IRCCS San Raffaele Roma, Rome, 00166, Italy
| | - Gloria Donninelli
- Molecular Neuroimmunology Unit, IRCCS Fondazione Santa Lucia, Via del Fosso di Fiorano 64, Rome, 00143, Italy
| | - Elisabetta Volpe
- Molecular Neuroimmunology Unit, IRCCS Fondazione Santa Lucia, Via del Fosso di Fiorano 64, Rome, 00143, Italy
| | - Fabrizio Mariani
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, 00133, Italy
| | - Luca Battistini
- Neuroimmunology Unit, IRCCS Fondazione Santa Lucia, Via del Fosso di Fiorano 64, Rome, 00143, Italy
| | | | - Luana Gilio
- Unit of Neurology, IRCCS Neuromed, Pozzilli (Is), 86077, Italy
| | - Antonio Bruno
- Unit of Neurology, IRCCS Neuromed, Pozzilli (Is), 86077, Italy
- Ph.D. Program in Neuroscience, Department of Systems Medicine, University of Rome Tor Vergata, Rome, 00133, Italy
| | - Ettore Dolcetti
- Unit of Neurology, IRCCS Neuromed, Pozzilli (Is), 86077, Italy
- Ph.D. Program in Neuroscience, Department of Systems Medicine, University of Rome Tor Vergata, Rome, 00133, Italy
| | - Fabio Buttari
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, 00133, Italy
- Unit of Neurology, IRCCS Neuromed, Pozzilli (Is), 86077, Italy
| | - Georgia Mandolesi
- Synaptic Immunopathology Lab, IRCCS San Raffaele Roma, Rome, 00166, Italy
- Department of Human Sciences and Quality of Life Promotion, University of Rome San Raffaele, Rome, 00166, Italy
| | - Diego Centonze
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, 00133, Italy.
- Unit of Neurology, IRCCS Neuromed, Pozzilli (Is), 86077, Italy.
| | - Alessandra Musella
- Synaptic Immunopathology Lab, IRCCS San Raffaele Roma, Rome, 00166, Italy
- Department of Human Sciences and Quality of Life Promotion, University of Rome San Raffaele, Rome, 00166, Italy
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Dócs K, Balázs A, Papp I, Szücs P, Hegyi Z. Reactive spinal glia convert 2-AG to prostaglandins to drive aberrant astroglial calcium signaling. Front Cell Neurosci 2024; 18:1382465. [PMID: 38784707 PMCID: PMC11112260 DOI: 10.3389/fncel.2024.1382465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 04/23/2024] [Indexed: 05/25/2024] Open
Abstract
The endogenous cannabinoid 2-arachidonoylglycerol (2-AG) influences neurotransmission in the central nervous system mainly by activating type 1 cannabinoid receptor (CB1). Following its release, 2-AG is broken down by hydrolases to yield arachidonic acid, which may subsequently be metabolized by cyclooxygenase-2 (COX-2). COX-2 converts arachidonic acid and also 2-AG into prostanoids, well-known inflammatory and pro-nociceptive mediators. Here, using immunohistochemical and biochemical methods and pharmacological manipulations, we found that reactive spinal astrocytes and microglia increase the expression of COX-2 and the production of prostaglandin E2 when exposed to 2-AG. Both 2-AG and PGE2 evoke calcium transients in spinal astrocytes, but PGE2 showed 30% more efficacy and 55 times more potency than 2-AG. Unstimulated spinal dorsal horn astrocytes responded to 2-AG with calcium transients mainly through the activation of CB1. 2-AG induced exaggerated calcium transients in reactive astrocytes, but this increase in the frequency and area under the curve of calcium signals was only partially dependent on CB1. Instead, aberrant calcium transients were almost completely abolished by COX-2 inhibition. Our results suggest that both reactive spinal astrocytes and microglia perform an endocannabinoid-prostanoid switch to produce PGE2 at the expense of 2-AG. PGE2 in turn is responsible for the induction of aberrant astroglial calcium signals which, together with PGE2 production may play role in the development and maintenance of spinal neuroinflammation-associated disturbances such as central sensitization.
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Affiliation(s)
- Klaudia Dócs
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Anita Balázs
- Department of Theoretical and Integrative Health Sciences, Institute of Health Sciences, Faculty of Health Sciences, University of Debrecen, Debrecen, Hungary
| | - Ildikó Papp
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Peter Szücs
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
- HUN-REN-DE Neuroscience Research Group, University of Debrecen, Debrecen, Hungary
| | - Zoltán Hegyi
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
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Schreiner TG, Schreiner OD, Ciobanu RC. Spinal Cord Injury Management Based on Microglia-Targeting Therapies. J Clin Med 2024; 13:2773. [PMID: 38792314 PMCID: PMC11122315 DOI: 10.3390/jcm13102773] [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: 04/19/2024] [Revised: 05/05/2024] [Accepted: 05/07/2024] [Indexed: 05/26/2024] Open
Abstract
Spinal cord injury is a complicated medical condition both from the clinician's point of view in terms of management and from the patient's perspective in terms of unsatisfactory recovery. Depending on the severity, this disorder can be devastating despite the rapid and appropriate use of modern imaging techniques and convenient surgical spinal cord decompression and stabilization. In this context, there is a mandatory need for novel adjunctive therapeutic approaches to classical treatments to improve rehabilitation chances and clinical outcomes. This review offers a new and original perspective on therapies targeting the microglia, one of the most relevant immune cells implicated in spinal cord disorders. The first part of the manuscript reviews the anatomical and pathophysiological importance of the blood-spinal cord barrier components, including the role of microglia in post-acute neuroinflammation. Subsequently, the authors present the emerging therapies based on microglia modulation, such as cytokines modulators, stem cell, microRNA, and nanoparticle-based treatments that could positively impact spinal cord injury management. Finally, future perspectives and challenges are also highlighted based on the ongoing clinical trials related to medications targeting microglia.
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Affiliation(s)
- Thomas Gabriel Schreiner
- Department of Medical Specialties III, Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa”, 700115 Iasi, Romania;
- First Neurology Clinic, “Prof. Dr. N. Oblu” Clinical Emergency Hospital, 700309 Iasi, Romania
- Department of Electrical Measurements and Materials, Faculty of Electrical Engineering and Information Technology, Gheorghe Asachi Technical University of Iasi, 700050 Iasi, Romania;
| | - Oliver Daniel Schreiner
- Department of Electrical Measurements and Materials, Faculty of Electrical Engineering and Information Technology, Gheorghe Asachi Technical University of Iasi, 700050 Iasi, Romania;
- Medical Oncology Department, Regional Institute of Oncology, 700483 Iasi, Romania
| | - Romeo Cristian Ciobanu
- Department of Electrical Measurements and Materials, Faculty of Electrical Engineering and Information Technology, Gheorghe Asachi Technical University of Iasi, 700050 Iasi, Romania;
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Serrano PDL, Rodrigues TDPV, Pinto LD, Pereira IC, Farias IB, Cavalheiro RBR, Mendes PM, Peixoto KO, Barile JP, Seneor DD, Correa Silva EG, Oliveira ASB, Pinto WBVDR, Sgobbi P. Assessing Chitinases and Neurofilament Light Chain as Biomarkers for Adult-Onset Leukodystrophies. Curr Issues Mol Biol 2024; 46:4309-4323. [PMID: 38785530 PMCID: PMC11120026 DOI: 10.3390/cimb46050262] [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: 03/31/2024] [Revised: 04/19/2024] [Accepted: 04/28/2024] [Indexed: 05/25/2024] Open
Abstract
Leukodystrophies represent a large and complex group of inherited disorders affecting the white matter of the central nervous system. Adult-onset leukoencephalopathy with axonal spheroids and pigmented glia (ALSP) is a rare leukodystrophy which still needs the proper identification of diagnostic, prognostic, and monitoring biomarkers. The aim of this study was to determine the diagnostic and prognostic value of chitinases and neurofilament light chain as biomarkers for ALSP. A cross-sectional study was performed to analyze cerebrospinal fluid levels of chitinases (chitotriosidase and chitinase 3-like 2) and neurofilament light chain in five different groups: (i) normal health individuals; (ii) patients with definitive diagnosis of ALSP and genetic confirmation; (iii) asymptomatic patients with CSF1R variants; (iv) patients with other adult-onset leukodystrophies; and (v) patients with amyotrophic lateral sclerosis (external control group). Chitinase levels showed a statistical correlation with clinical assessment parameters in ALSP patients. Chitinase levels were also distinct between ALSP and the other leukodystrophies. Significant differences were noted in the levels of chitinases and neurofilament light chain comparing symptomatic (ALSP) and asymptomatic individuals with CSF1R variants. This study is the first to establish chitinases as a potential biomarker for ALSP and confirms neurofilament light chain as a good biomarker for primary microgliopathies.
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Affiliation(s)
- Paulo de Lima Serrano
- PSEG Centro de Pesquisa Clínica, São Paulo 04038-002, SP, Brazil; (P.d.L.S.); (T.d.P.V.R.); (L.D.P.); (I.C.P.); (E.G.C.S.)
- Department of Neurology and Neurosurgery, Federal University of São Paulo (UNIFESP), São Paulo 04039-060, SP, Brazil; (I.B.F.); (R.B.R.C.); (P.M.M.); (K.O.P.); (J.P.B.); (D.D.S.); (A.S.B.O.); (W.B.V.d.R.P.)
| | | | - Leslyê Donato Pinto
- PSEG Centro de Pesquisa Clínica, São Paulo 04038-002, SP, Brazil; (P.d.L.S.); (T.d.P.V.R.); (L.D.P.); (I.C.P.); (E.G.C.S.)
| | - Indiara Correia Pereira
- PSEG Centro de Pesquisa Clínica, São Paulo 04038-002, SP, Brazil; (P.d.L.S.); (T.d.P.V.R.); (L.D.P.); (I.C.P.); (E.G.C.S.)
| | - Igor Braga Farias
- Department of Neurology and Neurosurgery, Federal University of São Paulo (UNIFESP), São Paulo 04039-060, SP, Brazil; (I.B.F.); (R.B.R.C.); (P.M.M.); (K.O.P.); (J.P.B.); (D.D.S.); (A.S.B.O.); (W.B.V.d.R.P.)
| | - Renan Brandão Rambaldi Cavalheiro
- Department of Neurology and Neurosurgery, Federal University of São Paulo (UNIFESP), São Paulo 04039-060, SP, Brazil; (I.B.F.); (R.B.R.C.); (P.M.M.); (K.O.P.); (J.P.B.); (D.D.S.); (A.S.B.O.); (W.B.V.d.R.P.)
| | - Patrícia Marques Mendes
- Department of Neurology and Neurosurgery, Federal University of São Paulo (UNIFESP), São Paulo 04039-060, SP, Brazil; (I.B.F.); (R.B.R.C.); (P.M.M.); (K.O.P.); (J.P.B.); (D.D.S.); (A.S.B.O.); (W.B.V.d.R.P.)
| | - Kaliny Oliveira Peixoto
- Department of Neurology and Neurosurgery, Federal University of São Paulo (UNIFESP), São Paulo 04039-060, SP, Brazil; (I.B.F.); (R.B.R.C.); (P.M.M.); (K.O.P.); (J.P.B.); (D.D.S.); (A.S.B.O.); (W.B.V.d.R.P.)
| | - João Paulo Barile
- Department of Neurology and Neurosurgery, Federal University of São Paulo (UNIFESP), São Paulo 04039-060, SP, Brazil; (I.B.F.); (R.B.R.C.); (P.M.M.); (K.O.P.); (J.P.B.); (D.D.S.); (A.S.B.O.); (W.B.V.d.R.P.)
| | - Daniel Delgado Seneor
- Department of Neurology and Neurosurgery, Federal University of São Paulo (UNIFESP), São Paulo 04039-060, SP, Brazil; (I.B.F.); (R.B.R.C.); (P.M.M.); (K.O.P.); (J.P.B.); (D.D.S.); (A.S.B.O.); (W.B.V.d.R.P.)
| | | | - Acary Souza Bulle Oliveira
- Department of Neurology and Neurosurgery, Federal University of São Paulo (UNIFESP), São Paulo 04039-060, SP, Brazil; (I.B.F.); (R.B.R.C.); (P.M.M.); (K.O.P.); (J.P.B.); (D.D.S.); (A.S.B.O.); (W.B.V.d.R.P.)
| | - Wladimir Bocca Vieira de Rezende Pinto
- Department of Neurology and Neurosurgery, Federal University of São Paulo (UNIFESP), São Paulo 04039-060, SP, Brazil; (I.B.F.); (R.B.R.C.); (P.M.M.); (K.O.P.); (J.P.B.); (D.D.S.); (A.S.B.O.); (W.B.V.d.R.P.)
| | - Paulo Sgobbi
- PSEG Centro de Pesquisa Clínica, São Paulo 04038-002, SP, Brazil; (P.d.L.S.); (T.d.P.V.R.); (L.D.P.); (I.C.P.); (E.G.C.S.)
- Department of Neurology and Neurosurgery, Federal University of São Paulo (UNIFESP), São Paulo 04039-060, SP, Brazil; (I.B.F.); (R.B.R.C.); (P.M.M.); (K.O.P.); (J.P.B.); (D.D.S.); (A.S.B.O.); (W.B.V.d.R.P.)
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Mannino F, Urzì Brancati V, Lauro R, Pirrotta I, Rottura M, Irrera N, Cavallini GM, Pallio G, Gitto E, Manti S. Levosimendan and Dobutamin Attenuate LPS-Induced Inflammation in Microglia by Inhibiting the NF-κB Pathway and NLRP3 Inflammasome Activation via Nrf2/HO-1 Signalling. Biomedicines 2024; 12:1009. [PMID: 38790971 PMCID: PMC11117907 DOI: 10.3390/biomedicines12051009] [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: 03/08/2024] [Revised: 04/19/2024] [Accepted: 04/30/2024] [Indexed: 05/26/2024] Open
Abstract
Hypovolemic shock is a circulatory failure, due to a loss in the effective circulating blood volume, that causes tissue hypoperfusion and hypoxia. This condition stimulates reactive oxygen species (ROS) and pro-inflammatory cytokine production in different organs and also in the central nervous system (CNS). Levosimendan, a cardioprotective inodilator, and dobutamine, a β1-adrenergic agonist, are commonly used for the treatment of hypovolemic shock, thanks to their anti-inflammatory and antioxidant effects. For this reason, we aimed at investigating levosimendan and dobutamine's neuroprotective effects in an "in vitro" model of lipopolysaccharide (LPS)-induced neuroinflammation. Human microglial cells (HMC3) were challenged with LPS (0.1 µg/mL) to induce an inflammatory phenotype and then treated with levosimendan (10 µM) or dobutamine (50 µM) for 24 h. Levosimendan and dobutamine significantly reduced the ROS levels and markedly increased Nrf2 and HO-1 protein expression in LPS-challenged cells. Levosimendan and dobutamine also decreased p-NF-κB expression and turned off the NLRP3 inflammasome together with its downstream signals, caspase-1 and IL-1β. Moreover, a reduction in TNF-α and IL-6 expression and an increase in IL-10 levels in LPS-stimulated HMC3 cells was observed following treatment. In conclusion, levosimendan and dobutamine attenuated LPS-induced neuroinflammation through NF-κB pathway inhibition and NLRP3 inflammasome activation via Nrf2/HO-1 signalling, suggesting that these drugs could represent a promising therapeutic approach for the treatment of neuroinflammation consequent to hypovolemic shock.
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Affiliation(s)
- Federica Mannino
- Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy; (F.M.); (V.U.B.); (R.L.); (I.P.); (M.R.); (N.I.); (E.G.)
| | - Valentina Urzì Brancati
- Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy; (F.M.); (V.U.B.); (R.L.); (I.P.); (M.R.); (N.I.); (E.G.)
| | - Rita Lauro
- Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy; (F.M.); (V.U.B.); (R.L.); (I.P.); (M.R.); (N.I.); (E.G.)
| | - Igor Pirrotta
- Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy; (F.M.); (V.U.B.); (R.L.); (I.P.); (M.R.); (N.I.); (E.G.)
| | - Michelangelo Rottura
- Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy; (F.M.); (V.U.B.); (R.L.); (I.P.); (M.R.); (N.I.); (E.G.)
| | - Natasha Irrera
- Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy; (F.M.); (V.U.B.); (R.L.); (I.P.); (M.R.); (N.I.); (E.G.)
| | - Gian Maria Cavallini
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, with Interest in Transplants, Oncology and Regenerative Medicine, University of Modena and Reggio Emilia, 41121 Modena, Italy;
| | - Giovanni Pallio
- Department of Biomedical and Dental Sciences and Morphological and Functional Imaging, University of Messina, 98125 Messina, Italy
| | - Eloisa Gitto
- Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy; (F.M.); (V.U.B.); (R.L.); (I.P.); (M.R.); (N.I.); (E.G.)
| | - Sara Manti
- Department of Human Pathology of Adult and Childhood Gaetano Barresi, University of Messina, 98125 Messina, Italy;
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47
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Kong W, Frouard J, Xie G, Corley MJ, Helmy E, Zhang G, Schwarzer R, Montano M, Sohn P, Roan NR, Ndhlovu LC, Gan L, Greene WC. Neuroinflammation generated by HIV-infected microglia promotes dysfunction and death of neurons in human brain organoids. PNAS NEXUS 2024; 3:pgae179. [PMID: 38737767 PMCID: PMC11086946 DOI: 10.1093/pnasnexus/pgae179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Accepted: 04/17/2024] [Indexed: 05/14/2024]
Abstract
Despite the success of combination antiretroviral therapy (ART) for individuals living with HIV, mild forms of HIV-associated neurocognitive disorder (HAND) continue to occur. Brain microglia form the principal target for HIV infection in the brain. It remains unknown how infection of these cells leads to neuroinflammation, neuronal dysfunction, and/or death observed in HAND. Utilizing two different inducible pluripotent stem cell-derived brain organoid models (cerebral and choroid plexus [ChP] organoids) containing microglia, we investigated the pathogenic changes associated with HIV infection. Infection of microglia was associated with a sharp increase in CCL2 and CXCL10 chemokine gene expression and the activation of many type I interferon stimulated genes (MX1, ISG15, ISG20, IFI27, IFITM3 and others). Production of the proinflammatory chemokines persisted at low levels after treatment of the cell cultures with ART, consistent with the persistence of mild HAND following clinical introduction of ART. Expression of multiple members of the S100 family of inflammatory genes sharply increased following HIV infection of microglia measured by single-cell RNA-seq. However, S100 gene expression was not limited to microglia but was also detected more broadly in uninfected stromal cells, mature and immature ChP cells, neural progenitor cells and importantly in bystander neurons suggesting propagation of the inflammatory response to bystander cells. Neurotransmitter transporter expression declined in uninfected neurons, accompanied by increased expression of genes promoting cellular senescence and cell death. Together, these studies underscore how an inflammatory response generated in HIV-infected microglia is propagated to multiple uninfected bystander cells ultimately resulting in the dysfunction and death of bystander neurons.
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Affiliation(s)
- Weili Kong
- Michael Hulton Center for HIV Cure Research at Gladstone, San Francisco, CA 94158, USA
- Gladstone Institute of Virology, San Francisco, CA 94158, USA
| | - Julie Frouard
- Michael Hulton Center for HIV Cure Research at Gladstone, San Francisco, CA 94158, USA
- Gladstone Institute of Virology, San Francisco, CA 94158, USA
- Department of Urology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Guorui Xie
- Michael Hulton Center for HIV Cure Research at Gladstone, San Francisco, CA 94158, USA
- Gladstone Institute of Virology, San Francisco, CA 94158, USA
- Department of Urology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Michael J Corley
- Division of Infectious Diseases, Department of Medicine, Weill Cornell Medicine, New York, NY 10021, USA
- Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY 10021, USA
| | - Ekram Helmy
- Michael Hulton Center for HIV Cure Research at Gladstone, San Francisco, CA 94158, USA
- Gladstone Institute of Virology, San Francisco, CA 94158, USA
| | - Gang Zhang
- Michael Hulton Center for HIV Cure Research at Gladstone, San Francisco, CA 94158, USA
- Gladstone Institute of Virology, San Francisco, CA 94158, USA
| | - Roland Schwarzer
- Michael Hulton Center for HIV Cure Research at Gladstone, San Francisco, CA 94158, USA
- Gladstone Institute of Virology, San Francisco, CA 94158, USA
| | - Mauricio Montano
- Michael Hulton Center for HIV Cure Research at Gladstone, San Francisco, CA 94158, USA
- Gladstone Institute of Virology, San Francisco, CA 94158, USA
| | - Peter Sohn
- Gladstone Institute of Neurological Disease, San Francisco, CA 94158, USA
| | - Nadia R Roan
- Michael Hulton Center for HIV Cure Research at Gladstone, San Francisco, CA 94158, USA
- Gladstone Institute of Virology, San Francisco, CA 94158, USA
- Department of Urology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Lishomwa C Ndhlovu
- Division of Infectious Diseases, Department of Medicine, Weill Cornell Medicine, New York, NY 10021, USA
- Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY 10021, USA
| | - Li Gan
- Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY 10021, USA
- Helen and Robert Appel Alzheimer's Disease Research Institute, Weill Cornell Medicine, New York, NY 10021, USA
| | - Warner C Greene
- Michael Hulton Center for HIV Cure Research at Gladstone, San Francisco, CA 94158, USA
- Gladstone Institute of Virology, San Francisco, CA 94158, USA
- Departments of Medicine and Microbiology and Immunology, University of California, San Francisco, San Francisco, CA 94143, USA
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Albadrani HM, Chauhan P, Ashique S, Babu MA, Iqbal D, Almutary AG, Abomughaid MM, Kamal M, Paiva-Santos AC, Alsaweed M, Hamed M, Sachdeva P, Dewanjee S, Jha SK, Ojha S, Slama P, Jha NK. Mechanistic insights into the potential role of dietary polyphenols and their nanoformulation in the management of Alzheimer's disease. Biomed Pharmacother 2024; 174:116376. [PMID: 38508080 DOI: 10.1016/j.biopha.2024.116376] [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: 06/22/2023] [Revised: 01/19/2024] [Accepted: 02/28/2024] [Indexed: 03/22/2024] Open
Abstract
Alzheimer's disease (AD) is a very common neurodegenerative disorder associated with memory loss and a progressive decline in cognitive activity. The two major pathophysiological factors responsible for AD are amyloid plaques (comprising amyloid-beta aggregates) and neurofibrillary tangles (consisting of hyperphosphorylated tau protein). Polyphenols, a class of naturally occurring compounds, are immensely beneficial for the treatment or management of various disorders and illnesses. Naturally occurring sources of polyphenols include plants and plant-based foods, such as fruits, herbs, tea, vegetables, coffee, red wine, and dark chocolate. Polyphenols have unique properties, such as being the major source of anti-oxidants and possessing anti-aging and anti-cancerous properties. Currently, dietary polyphenols have become a potential therapeutic approach for the management of AD, depending on various research findings. Dietary polyphenols can be an effective strategy to tackle multifactorial events that occur with AD. For instance, naturally occurring polyphenols have been reported to exhibit neuroprotection by modulating the Aβ biogenesis pathway in AD. Many nanoformulations have been established to enhance the bioavailability of polyphenols, with nanonization being the most promising. This review comprehensively provides mechanistic insights into the neuroprotective potential of dietary polyphenols in treating AD. It also reviews the usability of dietary polyphenol as nanoformulation for AD treatment.
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Affiliation(s)
- Hind Muteb Albadrani
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Imam Abdulrahman Bin Faisal University, Dammam, Eastern Province 34212, Saudi Arabia
| | - Payal Chauhan
- Department of Pharmaceutical Sciences, Maharshi Dayanad University, Rohtak, Haryana 124001, India
| | - Sumel Ashique
- Department of Pharmaceutical Sciences, Bengal College of Pharmaceutical Sciences & Research, Durgapur 713212, West Bengal, India
| | - M Arockia Babu
- Institute of Pharmaceutical Research, GLA University, Mathura, India
| | - Danish Iqbal
- Department of Health Information Management, College of Applied Medical Sciences, Buraydah Private Colleges, Buraydah 51418, Saudi Arabia
| | - Abdulmajeed G Almutary
- Department of Biomedical Sciences, College of Health Sciences, Abu Dhabi University, Abu Dhabi, United Arab Emirates
| | - Mosleh Mohammad Abomughaid
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, University of Bisha, Bisha 61922, Saudi Arabia
| | - Mehnaz Kamal
- Department of Pharmaceutical Chemistry, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
| | - Ana Cláudia Paiva-Santos
- Department of Pharmaceutical Technology, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal; REQUIMTE/LAQV, Group of Pharmaceutical Technology, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal
| | - Mohammed Alsaweed
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Al-Majmaah 11952, Saudi Arabia.
| | - Munerah Hamed
- Department of Pathology, Faculty of Medicine, Umm Al-Qura University, Makkah 21955, Saudi Arabia
| | | | - Saikat Dewanjee
- Advanced Pharmacognosy Research Laboratory, Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, 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, P.O. Box 15551, Al Ain, United Arab Emirates
| | - Petr Slama
- Department of Animal Morphology, Physiology and Genetics, Faculty of AgriSciences, Mendel University in Brno, Brno, Czech Republic.
| | - 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, School of Applied & Life Sciences (SALS), Uttaranchal University, Dehradun, India.
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49
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Sternberg Z. Neurodegenerative Etiology of Aromatic L-Amino Acid Decarboxylase Deficiency: a Novel Concept for Expanding Treatment Strategies. Mol Neurobiol 2024; 61:2996-3018. [PMID: 37953352 DOI: 10.1007/s12035-023-03684-2] [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: 02/07/2023] [Accepted: 09/29/2023] [Indexed: 11/14/2023]
Abstract
Aromatic l-amino acid decarboxylase deficiency (AADC-DY) is caused by one or more mutations in the DDC gene, resulting in the deficit in catecholamines and serotonin neurotransmitters. The disease has limited therapeutic options with relatively poor clinical outcomes. Accumulated evidence suggests the involvement of neurodegenerative mechanisms in the etiology of AADC-DY. In the absence of neurotransmitters' neuroprotective effects, the accumulation and the chronic presence of several neurotoxic metabolites including 4-dihydroxy-L-phenylalanine, 3-methyldopa, and homocysteine, in the brain of subjects with AADC-DY, promote oxidative stress and reduce the cellular antioxidant and methylation capacities, leading to glial activation and mitochondrial dysfunction, culminating to neuronal injury and death. These pathophysiological processes have the potential to hinder the clinical efficacy of treatments aimed at increasing neurotransmitters' synthesis and or function. This review describes in detail the mechanisms involved in AADC-DY neurodegenerative etiology, highlighting the close similarities with those involved in other neurodegenerative diseases. We then offer novel strategies for the treatment of the disease with the objective to either reduce the level of the metabolites or counteract their prooxidant and neurotoxic effects. These treatment modalities used singly or in combination, early in the course of the disease, will minimize neuronal injury, preserving the functional integrity of neurons, hence improving the clinical outcomes of both conventional and unconventional interventions in AADC-DY. These modalities may not be limited to AADC-DY but also to other metabolic disorders where a specific mutation leads to the accumulation of prooxidant and neurotoxic metabolites.
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Affiliation(s)
- Zohi Sternberg
- Jacobs School of Medicine and Biomedical Sciences, Buffalo Medical Center, Buffalo, NY, 14203, USA.
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50
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Khan Z, Mehan S, Gupta GD, Narula AS. Immune System Dysregulation in the Progression of Multiple Sclerosis: Molecular Insights and Therapeutic Implications. Neuroscience 2024; 548:9-26. [PMID: 38692349 DOI: 10.1016/j.neuroscience.2024.04.004] [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: 11/22/2023] [Revised: 03/28/2024] [Accepted: 04/09/2024] [Indexed: 05/03/2024]
Abstract
Multiple sclerosis (MS), a prevalent neurological disorder, predominantly affects young adults and is characterized by chronic autoimmune activity. The study explores the immune system dysregulation in MS, highlighting the crucial roles of immune and non-neuronal cells in the disease's progression. This review examines the dual role of cytokines, with some like IL-6, TNF-α, and interferon-gamma (IFN-γ) promoting inflammation and CNS tissue injury, and others such as IL-4, IL-10, IL-37, and TGF-β fostering remyelination and protecting against MS. Elevated chemokine levels in the cerebrospinal fluid (CSF), including CCL2, CCL5, CXCL10, CXCL13, and fractalkine, are analyzed for their role in facilitating immune cell migration across the blood-brain barrier (BBB), worsening inflammation and neurodegeneration. The study also delves into the impact of auto-antibodies targeting myelin components like MOG and AQP4, which activate complement cascades leading to further myelin destruction. The article discusses how compromised BBB integrity allows immune cells and inflammatory mediators to infiltrate the CNS, intensifying MS symptoms. It also examines the involvement of astrocytes, microglia, and oligodendrocytes in the disease's progression. Additionally, the effectiveness of immunomodulatory drugs such as IFN-β and CD20-targeting monoclonal antibodies (e.g., rituximab) in modulating immune responses is reviewed, highlighting their potential to reduce relapse rates and delaying MS progression. These insights emphasize the importance of immune system dysfunction in MS development and progression, guiding the development of new therapeutic strategies. The study underscores recent advancements in understanding MS's molecular pathways, opening avenues for more targeted and effective treatments.
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Affiliation(s)
- Zuber Khan
- Division of Neuroscience, Department of Pharmacology, ISF College of Pharmacy (Affiliated to IK Gujral Punjab Technical University, Jalandhar, Punjab 144603, India), Moga 142001, Punjab, India
| | - Sidharth Mehan
- Division of Neuroscience, Department of Pharmacology, ISF College of Pharmacy (Affiliated to IK Gujral Punjab Technical University, Jalandhar, Punjab 144603, India), Moga 142001, Punjab, India.
| | - Ghanshyam Das Gupta
- Department of Pharmaceutics, ISF College of Pharmacy (Affiliated to IK Gujral Punjab Technical University, Jalandhar, Punjab 144603, India), Moga, Punjab, India
| | - Acharan S Narula
- Narula Research, LLC, 107 Boulder Bluff, Chapel Hill, NC 27516, USA
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