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Zhang J, Xie D, Jiao D, Zhou S, Liu S, Ju Z, Hu L, Qi L, Yao C, Zhao C. From inflammatory signaling to neuronal damage: Exploring NLR inflammasomes in ageing neurological disorders. Heliyon 2024; 10:e32688. [PMID: 38975145 PMCID: PMC11226848 DOI: 10.1016/j.heliyon.2024.e32688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Accepted: 06/06/2024] [Indexed: 07/09/2024] Open
Abstract
The persistence of neuronal degeneration and damage is a major obstacle in ageing medicine. Nucleotide-binding oligomerization domain (NOD)-like receptors detect environmental stressors and trigger the maturation and secretion of pro-inflammatory cytokines that can cause neuronal damage and accelerate cell death. NLR (NOD-like receptors) inflammasomes are protein complexes that contain NOD-like receptors. Studying the role of NLR inflammasomes in ageing-related neurological disorders can provide valuable insights into the mechanisms of neurodegeneration. This includes investigating their activation of inflammasomes, transcription, and capacity to promote or inhibit inflammatory signaling, as well as exploring strategies to regulate NLR inflammasomes levels. This review summarizes the use of NLR inflammasomes in guiding neuronal degeneration and injury during the ageing process, covering several neurological disorders such as Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, stroke, and peripheral neuropathies. To improve the quality of life and slow the progression of neurological damage, NLR-based treatment strategies, including inhibitor-related therapies and physical therapy, are presented. Additionally, important connections between age-related neurological disorders and NLR inflammasomes are highlighted to guide future research and facilitate the development of new treatment options.
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Affiliation(s)
- Jingwen Zhang
- School of Acupuncture-moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Dong Xie
- Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Danli Jiao
- School of Acupuncture-moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Shuang Zhou
- School of Acupuncture-moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Shimin Liu
- School of Acupuncture-moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
- Shanghai Research Institute of Acupuncture and Meridian, Shanghai, 200030, China
| | - Ziyong Ju
- School of Acupuncture-moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Li Hu
- School of Acupuncture-moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Li Qi
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Chongjie Yao
- School of Acupuncture-moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
- Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Chen Zhao
- School of Acupuncture-moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
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2
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Ducza L, Gaál B. The Neglected Sibling: NLRP2 Inflammasome in the Nervous System. Aging Dis 2024; 15:1006-1028. [PMID: 38722788 PMCID: PMC11081174 DOI: 10.14336/ad.2023.0926-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 09/26/2023] [Indexed: 05/13/2024] Open
Abstract
While classical NOD-like receptor pyrin domain containing protein 1 (NLRP1) and NLRP3 inflammasomal proteins have been extensively investigated, the contribution of NLRP2 is still ill-defined in the nervous system. Given the putative significance of NLRP2 in orchestrating neuroinflammation, further inquiry is needed to gain a better understanding of its connectome, hence its specific targeting may hold a promising therapeutic implication. Therefore, bioinformatical approach for extracting information, specifically in the context of neuropathologies, is also undoubtedly preferred. To the best of our knowledge, there is no review study selectively targeting only NLRP2. Increasing, but still fragmentary evidence should encourage researchers to thoroughly investigate this inflammasome in various animal- and human models. Taken together, herein we aimed to review the current literature focusing on the role of NLRP2 inflammasome in the nervous system and more importantly, we provide an algorithm-based protein network of human NLRP2 for elucidating potentially valuable molecular partnerships that can be the beginning of a new discourse and future therapeutic considerations.
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Affiliation(s)
- László Ducza
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Debrecen, Hungary, Hungary
| | - Botond Gaál
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Debrecen, Hungary, Hungary
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3
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Zhang T, Xing F, Qu M, Yang Z, Liu Y, Yao Y, Xing N. NLRP2 in health and disease. Immunology 2024; 171:170-180. [PMID: 37735978 DOI: 10.1111/imm.13699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 09/08/2023] [Indexed: 09/23/2023] Open
Abstract
NLR family pyrin domain containing 2 (NLRP2) is a novel member of the Nod-like receptor (NLR) family. However, our understanding of NLRP2 has long been ambiguous. NLRP2 may have a role in the innate immune response, but its 'specific' functions remain controversial. Although NLRP2 can initiate inflammasome and promote inflammation, it can also downregulate inflammatory signals. Additionally, NLRP2 has been reported to function in the reproductive system and shows high expression in the placenta. However, the exact role of NLRP2 in the reproductive system is unclear. Here, we highlight the most current progress on NLRP2 in inflammasome activation, effector function and regulation of nuclear factor-κB. And we discuss functions of NLRP2 in inflammatory diseases, reproductive disorders and the potential implication of NLRP2 in human diseases.
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Affiliation(s)
- Tongtong Zhang
- Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Fei Xing
- Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Henan Province International Joint Laboratory of Pain, Cognition and Emotion, Zhengzhou, Henan, China
| | - Mingcui Qu
- Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Zhihu Yang
- Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yafei Liu
- Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yongchao Yao
- Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Na Xing
- Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Henan Province International Joint Laboratory of Pain, Cognition and Emotion, Zhengzhou, Henan, China
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Chiarini A, Armato U, Gui L, Dal Prà I. "Other Than NLRP3" Inflammasomes: Multiple Roles in Brain Disease. Neuroscientist 2024; 30:23-48. [PMID: 35815856 DOI: 10.1177/10738584221106114] [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] [Indexed: 11/15/2022]
Abstract
Human neuroinflammatory and neurodegenerative diseases, whose prevalence keeps rising, are still unsolved pathobiological/therapeutical problems. Among others, recent etiology hypotheses stressed as their main driver a chronic neuroinflammation, which is mediated by innate immunity-related protein oligomers: the inflammasomes. A panoply of exogenous and/or endogenous harmful agents activates inflammasomes' assembly, signaling, and IL-1β/IL-18 production and neural cells' pyroptotic death. The underlying concept is that inflammasomes' chronic activation advances neurodegeneration while their short-lasting operation restores tissue homeostasis. Hence, from a therapeutic standpoint, it is crucial to understand inflammasomes' regulatory mechanisms. About this, a deluge of recent studies focused on the NLRP3 inflammasome with suggestions that its pharmacologic block would hinder neurodegeneration. Yet hitherto no evidence proves this view. Moreover, known inflammasomes are numerous, and the mechanisms regulating their expression and function may vary with the involved animal species and strains, as well as organs and cells, and the harmful factors triggered as a result. Therefore, while presently leaving out some little-studied inflammasomes, this review focuses on the "other than NLRP3" inflammasomes that participate in neuroinflammation's complex mechanisms: NLRP1, NLRP2, NLRC4, and AIM2. Although human-specific data about them are relatively scant, we stress that only a holistic view including several human brain inflammasomes and other potential pathogenetic drivers will lead to successful therapies for neuroinflammatory and neurodegenerative diseases.
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Affiliation(s)
- Anna Chiarini
- Human Histology and Embryology Section, Department of Surgery, Dentistry, Pediatrics, and Gynecology, University of Verona, Verona, Italy
| | - Ubaldo Armato
- Human Histology and Embryology Section, Department of Surgery, Dentistry, Pediatrics, and Gynecology, University of Verona, Verona, Italy
| | - Li Gui
- Department of Neurology, Southwest Hospital, Chongqing, China
| | - Ilaria Dal Prà
- Human Histology and Embryology Section, Department of Surgery, Dentistry, Pediatrics, and Gynecology, University of Verona, Verona, Italy
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Ravichandran KA, Heneka MT. Inflammasomes in neurological disorders - mechanisms and therapeutic potential. Nat Rev Neurol 2024; 20:67-83. [PMID: 38195712 DOI: 10.1038/s41582-023-00915-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/04/2023] [Indexed: 01/11/2024]
Abstract
Inflammasomes are molecular scaffolds that are activated by damage-associated and pathogen-associated molecular patterns and form a key element of innate immune responses. Consequently, the involvement of inflammasomes in several diseases that are characterized by inflammatory processes, such as multiple sclerosis, is widely appreciated. However, many other neurological conditions, including Alzheimer disease, Parkinson disease, amyotrophic lateral sclerosis, stroke, epilepsy, traumatic brain injury, sepsis-associated encephalopathy and neurological sequelae of COVID-19, all involve persistent inflammation in the brain, and increasing evidence suggests that inflammasome activation contributes to disease progression in these conditions. Understanding the biology and mechanisms of inflammasome activation is, therefore, crucial for the development of inflammasome-targeted therapies for neurological conditions. In this Review, we present the current evidence for and understanding of inflammasome activation in neurological diseases and discuss current and potential interventional strategies that target inflammasome activation to mitigate its pathological consequences.
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Affiliation(s)
- Kishore Aravind Ravichandran
- Department of Neuroinflammation, Institute of innate immunity, University of Bonn Medical Center Bonn, Bonn, Germany
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Michael T Heneka
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, Esch-sur-Alzette, Esch-sur-Alzette, Luxembourg.
- Department of Infectious Diseases and Immunology, University of Massachusetts Medical School, North Worcester, MA, USA.
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Kuang X, Chen S, Ye Q. The Role of Histone Deacetylases in NLRP3 Inflammasomesmediated Epilepsy. Curr Mol Med 2024; 24:980-1003. [PMID: 37519210 DOI: 10.2174/1566524023666230731095431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 06/08/2023] [Accepted: 06/19/2023] [Indexed: 08/01/2023]
Abstract
Epilepsy is one of the most common brain disorders that not only causes death worldwide, but also affects the daily lives of patients. Previous studies have revealed that inflammation plays an important role in the pathophysiology of epilepsy. Activation of inflammasomes can promote neuroinflammation by boosting the maturation of caspase-1 and the secretion of various inflammatory effectors, including chemokines, interleukins, and tumor necrosis factors. With the in-depth research on the mechanism of inflammasomes in the development of epilepsy, it has been discovered that NLRP3 inflammasomes may induce epilepsy by mediating neuronal inflammatory injury, neuronal loss and blood-brain barrier dysfunction. Therefore, blocking the activation of the NLRP3 inflammasomes may be a new epilepsy treatment strategy. However, the drugs that specifically block NLRP3 inflammasomes assembly has not been approved for clinical use. In this review, the mechanism of how HDACs, an inflammatory regulator, regulates the activation of NLRP3 inflammasome is summarized. It helps to explore the mechanism of the HDAC inhibitors inhibiting brain inflammatory damage so as to provide a potential therapeutic strategy for controlling the development of epilepsy.
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Affiliation(s)
- Xi Kuang
- Hainan Health Vocational College,Haikou, Hainan, 570311, China
| | - Shuang Chen
- Hubei Provincial Hospital of Integrated Chinese and Western Medicine, 430022, Hubei, China
| | - Qingmei Ye
- Hainan General Hospital & Hainan Affiliated Hospital of Hainan Medical University, Haikou, 570311, Hainan, China
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Anvar Z, Chakchouk I, Sharif M, Mahadevan S, Nasiotis ET, Su L, Liu Z, Wan YW, Van den Veyver IB. Loss of the Maternal Effect Gene Nlrp2 Alters the Transcriptome of Ovulated Mouse Oocytes and Impacts Expression of Histone Demethylase KDM1B. Reprod Sci 2023; 30:2780-2793. [PMID: 36976514 PMCID: PMC10524210 DOI: 10.1007/s43032-023-01218-8] [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: 11/22/2022] [Accepted: 03/09/2023] [Indexed: 03/29/2023]
Abstract
The subcortical maternal complex (SCMC) is a multiprotein complex in oocytes and preimplantation embryos that is encoded by maternal effect genes. The SCMC is essential for zygote-to-embryo transition, early embryogenesis, and critical zygotic cellular processes, including spindle positioning and symmetric division. Maternal deletion of Nlrp2, which encodes an SCMC protein, results in increased early embryonic loss and abnormal DNA methylation in embryos. We performed RNA sequencing on pools of meiosis II (MII) oocytes from wild-type and Nlrp2-null female mice that were isolated from cumulus-oocyte complexes (COCs) after ovarian stimulation. Using a mouse reference genome-based analysis, we found 231 differentially expressed genes (DEGs) in Nlrp2-null compared to WT oocytes (123 up- and 108 downregulated; adjusted p < 0.05). The upregulated genes include Kdm1b, a H3K4 histone demethylase required during oocyte development for the establishment of DNA methylation marks at CpG islands, including those at imprinted genes. The identified DEGs are enriched for processes involved in neurogenesis, gland morphogenesis, and protein metabolism and for post-translationally methylated proteins. When we compared our RNA sequencing data to an oocyte-specific reference transcriptome that contains many previously unannotated transcripts, we found 228 DEGs, including genes not identified with the first analysis. Interestingly, 68% and 56% of DEGs from the first and second analyses, respectively, overlap with oocyte-specific hyper- and hypomethylated domains. This study shows that there are substantial changes in the transcriptome of mouse MII oocytes from female mice with loss of function of Nlrp2, a maternal effect gene that encodes a member of the SCMC.
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Affiliation(s)
- Zahra Anvar
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX, USA
- Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX, USA
| | - Imen Chakchouk
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX, USA
- Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX, USA
| | - Momal Sharif
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX, USA
- Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX, USA
| | - Sangeetha Mahadevan
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX, USA
- Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX, USA
| | - Eleni Theodora Nasiotis
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX, USA
- Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX, USA
| | - Li Su
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX, USA
- Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX, USA
| | - Zhandong Liu
- Department of Pediatrics - Neurology, Baylor College of Medicine, Houston, TX, USA
| | - Ying-Wooi Wan
- Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX, USA.
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.
| | - Ignatia B Van den Veyver
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX, USA.
- Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX, USA.
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.
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Yang K, Bao T, Zeng J, Wang S, Yuan X, Xiang W, Xu H, Zeng L, Ge J. Research progress on pyroptosis-mediated immune-inflammatory response in ischemic stroke and the role of natural plant components as regulator of pyroptosis: A review. Biomed Pharmacother 2023; 157:113999. [PMID: 36455455 DOI: 10.1016/j.biopha.2022.113999] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 11/06/2022] [Accepted: 11/09/2022] [Indexed: 11/29/2022] Open
Abstract
Ischemic stroke (IS) is one of the leading causes of death and disability. Its pathogenesis is not completely clear, and inflammatory cascade is one of its main pathological processes. The current clinical practice of IS is to restore the blood supply to the ischemic area after IS as soon as possible through thrombolytic therapy to protect the vitality and function of neurons. However, blood reperfusion further accelerates ischemic damage and cause ischemia-reperfusion injury. The pathological process of cerebral ischemia-reperfusion injury involves multiple mechanisms, and the exact mechanism has not been fully elucidated. Pyroptosis, a newly discovered form of inflammatory programmed cell death, plays an important role in the initiation and progression of inflammation. It is a pro-inflammatory programmed death mediated by caspase Caspase-1/4/5/11, which can lead to cell swelling and rupture, release inflammatory factors IL-1β and IL-18, and induce an inflammatory cascade. Recent studies have shown that pyroptosis and its mediated inflammatory response are important factors in aggravating ischemic brain injury, and inhibition of pyroptosis may alleviate the ischemic brain injury. Furthermore, studies have found that natural plant components may have a regulatory effect on pyroptosis. Therefore, this review not only summarizes the molecular mechanism of pyroptosis and its role in ischemic stroke, but also the role of natural plant components as regulator of pyroptosis, in order to provide reference information on pyroptosis for the treatment of IS in the future.
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Affiliation(s)
- Kailin Yang
- Key Laboratory of Hunan Province for Integrated Traditional Chinese and Western Medicine on Prevention and Treatment of Cardio-Cerebral Diseases, Hunan University of Chinese Medicine, Changsha, Hunan Province, China.
| | - Tingting Bao
- Department of Endocrinology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jinsong Zeng
- The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan Province, China
| | - Shanshan Wang
- Key Laboratory of Hunan Province for Integrated Traditional Chinese and Western Medicine on Prevention and Treatment of Cardio-Cerebral Diseases, Hunan University of Chinese Medicine, Changsha, Hunan Province, China
| | - Xiao Yuan
- Key Laboratory of Hunan Province for Integrated Traditional Chinese and Western Medicine on Prevention and Treatment of Cardio-Cerebral Diseases, Hunan University of Chinese Medicine, Changsha, Hunan Province, China
| | - Wang Xiang
- Department of Rheumatology, The First People's Hospital Changde City, Changde City, Hunan Province, China
| | - Hao Xu
- Key Laboratory of Hunan Province for Integrated Traditional Chinese and Western Medicine on Prevention and Treatment of Cardio-Cerebral Diseases, Hunan University of Chinese Medicine, Changsha, Hunan Province, China
| | - Liuting Zeng
- Key Laboratory of Hunan Province for Integrated Traditional Chinese and Western Medicine on Prevention and Treatment of Cardio-Cerebral Diseases, Hunan University of Chinese Medicine, Changsha, Hunan Province, China.
| | - Jinwen Ge
- Key Laboratory of Hunan Province for Integrated Traditional Chinese and Western Medicine on Prevention and Treatment of Cardio-Cerebral Diseases, Hunan University of Chinese Medicine, Changsha, Hunan Province, China; Hunan Academy of Chinese Medicine, Changsha, Hunan Province, China.
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Puleo MG, Miceli S, Di Chiara T, Pizzo GM, Della Corte V, Simonetta I, Pinto A, Tuttolomondo A. Molecular Mechanisms of Inflammasome in Ischemic Stroke Pathogenesis. Pharmaceuticals (Basel) 2022; 15:1168. [PMID: 36297283 PMCID: PMC9612213 DOI: 10.3390/ph15101168] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 09/01/2022] [Accepted: 09/13/2022] [Indexed: 11/16/2022] Open
Abstract
Ischemic stroke (also called cerebral ischemia) is one of the leading causes of death and severe disability worldwide. NLR inflammasomes play a crucial role in sensing cell damage in response to a harmful stimuli and modulating the inflammatory response, promoting the release of pro-inflammatory cytokines such as IL-18 and IL-1β following ischemic injury. Therefore, a neuroprotective effect is achieved by inhibiting the expression, assembly, and secretion of inflammasomes, thus limiting the extent of brain detriment and neurological sequelae. This review aims to illustrate the molecular characteristics, expression levels, and assembly of NLRP3 (nucleotide-binding oligomerization domain-like receptor [NLR] family pyrin-domain-containing 3) inflammasome, the most studied in the literature, in order to discover promising therapeutic implications. In addition, we provide some information regarding the contribution of NLRP1, NLRP2, and NLRC4 inflammasomes to ischemic stroke pathogenesis, highlighting potential therapeutic strategies that require further study.
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Affiliation(s)
| | | | | | | | | | | | | | - Antonino Tuttolomondo
- Department of Health Promotion, Maternal and Infant Care, Internal Medicine and Medical Specialties, “G. D’Alessandro”, University of Palermo, Piazza delle Cliniche n.2, 90127 Palermo, Italy
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Mi L, Min X, Chai Y, Zhang J, Chen X. NLRP1 Inflammasomes: A Potential Target for the Treatment of Several Types of Brain Injury. Front Immunol 2022; 13:863774. [PMID: 35707533 PMCID: PMC9189285 DOI: 10.3389/fimmu.2022.863774] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 04/28/2022] [Indexed: 12/28/2022] Open
Abstract
NOD-like receptor (NLR) family pyrin domain-containing 1 (NLRP1) is a member of the NLR family. The NLRP1 inflammasome consists of the NLRP1 protein, the adaptor protein apoptosis-associated speck-like protein containing a CARD domain, and the effector molecule pro-caspase-1. When stimulated, the inflammasome initiates the cleavage of pro-caspase-1 and converts it into its active form, caspase-1; then, caspase-1 facilitates the cleavage of the proinflammatory cytokines interleukin-1β and interleukin-18 into their active and secreted forms. In addition, caspase-1 also mediates the cleavage of gasdermin D, which leads to pyroptosis, an inflammatory form of cell death. Pathological events that damage the brain and result in neuropathological conditions can generally be described as brain injury. Neuroinflammation, especially that driven by NLRP1, plays a considerable role in the pathophysiology of brain injury, such as early brain injury (EBI) of subarachnoid hemorrhage, ischemic brain injury during stroke, and traumatic brain injury (TBI). In this article, a thorough overview of NLRP1 is presented, including its structure, mechanism of activation, and role in neuroinflammation. We also present recent studies on NLRP1 as a target for the treatment of EBI, ischemic brain injury, TBI, and other types of brain injury, thus highlighting the perspective of NLRP1 as an effective mediator of catastrophic brain injury.
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Affiliation(s)
- Liang Mi
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Neurological Institute, Key Laboratory of Posttrauma Neurorepair and Regeneration in Central Nervous System, Ministry of Education, Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin, China
| | - Xiaobin Min
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Baodi Clinical College, Tianjin Medical University, Tianjin, China
| | - Yan Chai
- Tianjin Neurological Institute, Key Laboratory of Posttrauma Neurorepair and Regeneration in Central Nervous System, Ministry of Education, Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin, China
| | - Jianning Zhang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Neurological Institute, Key Laboratory of Posttrauma Neurorepair and Regeneration in Central Nervous System, Ministry of Education, Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin, China
| | - Xin Chen
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Neurological Institute, Key Laboratory of Posttrauma Neurorepair and Regeneration in Central Nervous System, Ministry of Education, Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin, China
- *Correspondence: Xin Chen,
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Hu Y, Wang B, Li S, Yang S. Pyroptosis, and its Role in Central Nervous System Disease. J Mol Biol 2021; 434:167379. [PMID: 34838808 DOI: 10.1016/j.jmb.2021.167379] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 11/16/2021] [Accepted: 11/20/2021] [Indexed: 02/07/2023]
Abstract
Pyroptosis is an inflammatory form of cell death executed by transmembrane pore-forming proteins known as gasdermins and can be activated in an inflammasome-dependent or -independent manner. Inflammasome-dependent pyroptosis is triggered in response to pathogen-associated molecular patterns (PAMPs) or damage-associated molecular patterns (DAMPs) and has emerged as an important player in the pathogenesis of multiple inflammatory diseases, mainly by releasing inflammatory contents. More recently, numerous studies have revealed the intricate mechanisms of pyroptosis and its role in the development of neuroinflammation in central nervous system (CNS) diseases. In this review, we summarize current understandings of the molecular and regulatory mechanisms of pyroptosis. In addition, we discuss how pyroptosis can drive different forms of neurological diseases and new promising therapeutic strategies targeting pyroptosis that can be leveraged to treat neuroinflammation.
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Affiliation(s)
- Yingchao Hu
- Department of Immunology, Key Laboratory of Immunological Environment and Disease, Gusu School, State Key Laboratory of Reproductive Medicine, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Personalized Cancer Medicine, Center for Global Health, Nanjing Medical University, Nanjing 211166, China
| | - Bingwei Wang
- Department of Pharmacology, Nanjing University of Chinese Medicine, Nanjing, China.
| | - Sheng Li
- Department of Neurology, Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China.
| | - Shuo Yang
- Department of Immunology, Key Laboratory of Immunological Environment and Disease, Gusu School, State Key Laboratory of Reproductive Medicine, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Personalized Cancer Medicine, Center for Global Health, Nanjing Medical University, Nanjing 211166, China.
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12
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Ducza L, Szücs P, Hegedűs K, Bakk E, Gajtkó A, Wéber I, Holló K. NLRP2 Is Overexpressed in Spinal Astrocytes at the Peak of Mechanical Pain Sensitivity during Complete Freund Adjuvant-Induced Persistent Pain. Int J Mol Sci 2021; 22:ijms222111408. [PMID: 34768839 PMCID: PMC8584130 DOI: 10.3390/ijms222111408] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 10/09/2021] [Accepted: 10/17/2021] [Indexed: 12/15/2022] Open
Abstract
Our earlier findings revealed that interleukin-1 receptor type-1 (IL-1R1) was overexpressed in spinal neurons, and IL-1R1-deficient mice showed significant attenuation of thermal and mechanical allodynia during the course of the Complete Freund adjuvant (CFA)-induced persistent pain model. In the present study, we found that a ligand of IL-1R1, termed interleukin-1β (IL-1β), is also significantly overexpressed at the peak of mechanical pain sensitivity in the CFA-evoked pain model. Analysis of cellular distribution and modeling using IMARIS software showed that in the lumbar spinal dorsal horn, IL-1β is significantly elevated by astrocytic expression. Maturation of IL-1β to its active form is facilitated by the formation of the multiprotein complex called inflammasome; thus, we tested the expression of NOD-like receptor proteins (NLRPs) in astrocytes. At the peak of mechanical allodynia, we found expression of the NLRP2 inflammasome sensor and its significantly elevated co-localization with the GFAP astrocytic marker, while NLRP3 was moderately present and NLRP1 showed total segregation from the astrocytic profiles. Our results indicate that peripheral CFA injection induces NLRP2 inflammasome and IL-1β expression in spinal astrocytes. The release of mature IL-1β can contribute to the maintenance of persistent pain by acting on its neuronally expressed receptor, which can lead to altered neuronal excitability.
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13
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Ma Z, Li K, Chen P, Pan J, Li X, Zhao G. Propofol Attenuates Inflammatory Damage via Inhibiting NLRP1-Casp1-Casp6 Signaling in Ischemic Brain Injury. Biol Pharm Bull 2021; 43:1481-1489. [PMID: 32999158 DOI: 10.1248/bpb.b20-00050] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Stroke is a common cerebrovascular disease. Inflammation-induced neuronal death is one of the key factors in stroke pathology. Propofol has been shown to ameliorate neuroinflammatory injury, but the exact mechanism of its neuroprotective role remains to be fully elucidated. In the present study, we found that inflammation was activated in ischemic cortical neurons, and the expression of nucleotide-binding domain, leucine-rich-repeat containing family, pyrin domain-containing 1 (NLRP1), NLRP3 inflammasome and effectors in primary cortical neurons increased. However, we found that propofol could inhibit the increased expression of NLRP1 and NLRP3 inflammasome induced by oxygen-glucose deprivation (OGD). Furthermore, the effector molecule caspase-1 (casp1) was revealed to be the downstream target of NLRP1 and propofol repressed the activation of caspase-1 via inhibiting NLRP1 in cortical neurons. Moreover, propofol inhibits caspase-6 activation in neurons through the NLRP1-caspase-1 pathway. Once the expression of caspase6 increases, propofol reduced its neuroprotective effect in OGD-treated cortical neurons. In the stroke middle cerebral artery occlusion (MCAO) model, infusion of caspase-6 inhibitors enhanced the protective effect of propofol on infarct size and neurological function. In conclusion, our results suggest that propofol plays a neuroprotective role in stroke by inhibiting the inflammatory pathway of NLRP1-caspase-1-caspase-6. Overall, these data suggest that propofol plays a key role in the inflammatory-dependent pathway after stroke, providing an important evidence for propofol as an effective strategy for neuroprotection in stroke.
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Affiliation(s)
- Zhuo Ma
- China-Japan Union Hospital of Jilin University.,Hospital of Xi'an Jiaotong University
| | - Kai Li
- China-Japan Union Hospital of Jilin University
| | - Peng Chen
- China-Japan Union Hospital of Jilin University
| | - Jizheng Pan
- China-Japan Union Hospital of Jilin University
| | - Xuyang Li
- China-Japan Union Hospital of Jilin University
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14
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Danger-Sensing/Patten Recognition Receptors and Neuroinflammation in Alzheimer's Disease. Int J Mol Sci 2020; 21:ijms21239036. [PMID: 33261147 PMCID: PMC7731137 DOI: 10.3390/ijms21239036] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 11/24/2020] [Accepted: 11/25/2020] [Indexed: 02/06/2023] Open
Abstract
Fibrillar aggregates and soluble oligomers of both Amyloid-β peptides (Aβs) and hyperphosphorylated Tau proteins (p-Tau-es), as well as a chronic neuroinflammation are the main drivers causing progressive neuronal losses and dementia in Alzheimer’s disease (AD). However, the underlying pathogenetic mechanisms are still much disputed. Several endogenous neurotoxic ligands, including Aβs, and/or p-Tau-es activate innate immunity-related danger-sensing/pattern recognition receptors (PPRs) thereby advancing AD’s neuroinflammation and progression. The major PRR families involved include scavenger, Toll-like, NOD-like, AIM2-like, RIG-like, and CLEC-2 receptors, plus the calcium-sensing receptor (CaSR). This quite intricate picture stresses the need to identify the pathogenetically topmost Aβ-activated PRR, whose signaling would trigger AD’s three main drivers and their intra-brain spread. In theory, the candidate might belong to any PRR family. However, results of preclinical studies using in vitro nontumorigenic human cortical neurons and astrocytes and in vivo AD-model animals have started converging on the CaSR as the pathogenetically upmost PRR candidate. In fact, the CaSR binds both Ca2+ and Aβs and promotes the spread of both Ca2+ dyshomeostasis and AD’s three main drivers, causing a progressive neurons’ death. Since CaSR’s negative allosteric modulators block all these effects, CaSR’s candidacy for topmost pathogenetic PRR has assumed a growing therapeutic potential worth clinical testing.
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15
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Zhang Q, Sun Y, He Z, Xu Y, Li X, Ding J, Lu M, Hu G. Kynurenine regulates NLRP2 inflammasome in astrocytes and its implications in depression. Brain Behav Immun 2020; 88:471-481. [PMID: 32283293 DOI: 10.1016/j.bbi.2020.04.016] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 03/27/2020] [Accepted: 04/07/2020] [Indexed: 12/21/2022] Open
Abstract
Increased kynurenine (Kyn) metabolized from tryptophan (Try) is a biomarker in the immune dysfunction of depression. However, the mechanism by which Kyn change promotes depression is poorly defined. Astrocytes are involved in the neuroinflammation of depression. Among the numerous inflammatory cytokines, interleukin-1β (IL-1β) produced by astrocytic Nod-like receptor protein (NLRP) inflammasome is crucial in the pathogenesis of depression. In the present study, Kyn was shown to be a proinflammatory metabolite in the neuroimmune signaling network mediating depressive-like behavior. First, in chronic mild stress (CMS)-induced depressive mice, the level of Kyn notably increased in the hippocampus, accompanied by the activation of astrocytic NLRP2 inflammasome. Kyn treatment specifically upregulated Nod-like receptor protein 2 (NLPR2) expression in primary mouse astrocytes. Kyn + ATP activated NLRP2 inflammasome, evidenced by increased caspase-1 expression and IL-1β release. After Kyn treatment, nuclear factor kappa-B (NF-κB) could translocate to the nucleus and bind the promoter of NLRP2, subsequently increased NLRP2 transcription in cultured astrocytes in vitro. Intraperitoneal injection of Kyn activated NLRP2 inflammasome in astrocytes of hippocampus in mice, while NLRP2 knockdown in astrocytes abolished depressive-like behaviors in mice induced by Kyn, suggesting the critical role of NLRP2 in Kyn-induced depression. These findings demonstrate a novel mechanism that Kyn upregulates NLRP2 in an NF-κB-dependent pathway and provide a new strategy for treatment of depression.
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Affiliation(s)
- Qingyu Zhang
- Department of Pharmacology, Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Nanjing, Jiangsu 210023, China
| | - Yiming Sun
- Department of Pharmacology, Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Nanjing, Jiangsu 210023, China
| | - Zhang He
- Department of Pharmacology, Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Nanjing, Jiangsu 210023, China
| | - Ying Xu
- Department of Pharmacology, Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Nanjing, Jiangsu 210023, China
| | - Xueting Li
- Department of Pharmacology, Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Nanjing, Jiangsu 210023, China
| | - Jianhua Ding
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, 101 Longmian Avenue, Nanjing, Jiangsu 211166, China
| | - Ming Lu
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, 101 Longmian Avenue, Nanjing, Jiangsu 211166, China
| | - Gang Hu
- Department of Pharmacology, Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Nanjing, Jiangsu 210023, China; Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, 101 Longmian Avenue, Nanjing, Jiangsu 211166, China.
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16
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NLRP2 inflammasome in dorsal root ganglion as a novel molecular platform that produces inflammatory pain hypersensitivity. Pain 2020; 160:2149-2160. [PMID: 31162334 DOI: 10.1097/j.pain.0000000000001611] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Inflammatory pain hypersensitivity is associated with activation of primary afferent neurons. This study investigated the existence of the inflammasome in dorsal root ganglion (DRG) and the functional significance in the development of inflammatory pain hypersensitivity. Tissue inflammation was induced in male C57BL/6 mice with complete Freund's adjuvant (CFA) or ceramide injection into the hind paw. Behavioral testing was performed to investigate inflammation-induced pain hypersensitivity. Ipsilateral L5 DRGs were obtained for analysis. Expression of nucleotide oligomerization domain-like receptors (NLRs) was analyzed with real-time PCR. Cleaved interleukin (IL)-1β and NLRP2 expression was investigated with immunohistochemistry and western blotting. Caspase 1 activity was also measured. A caspase 1 inhibitor and NLRP2 siRNA were intrathecally administered to inhibit NLRP2 inflammasome signaling in DRG. Cleaved IL-1β expression was significantly increased after CFA injection in small-sized DRG neurons. The amount of cleaved IL-1β and caspase 1 activity were also increased. Among several NLRs, NLRP2 mRNA was significantly increased in DRG after CFA injection. NLRP2 was expressed in small-sized DRG neurons. Intrathecal injection of a caspase 1 inhibitor or NLRP2 siRNA reduced CFA-induced pain hypersensitivity and cleaved IL-1β expression in DRG. Induction of cleaved IL-1β and NLRP2 in DRG neurons was similarly observed after ceramide injection. NLRP2 siRNA inhibited ceramide-induced pain hypersensitivity. These results confirmed the existence of NLRP2 inflammasome in DRG neurons. Activation of the NLRP2 inflammasome leads to activation of DRG neurons and subsequent development of pain hypersensitivity in various types of tissue inflammation.
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17
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Mészáros Á, Molnár K, Nógrádi B, Hernádi Z, Nyúl-Tóth Á, Wilhelm I, Krizbai IA. Neurovascular Inflammaging in Health and Disease. Cells 2020; 9:cells9071614. [PMID: 32635451 PMCID: PMC7407516 DOI: 10.3390/cells9071614] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 07/02/2020] [Indexed: 12/19/2022] Open
Abstract
Aging is characterized by a chronic low-grade sterile inflammation dubbed as inflammaging, which in part originates from accumulating cellular debris. These, acting as danger signals with many intrinsic factors such as cytokines, are sensed by a network of pattern recognition receptors and other cognate receptors, leading to the activation of inflammasomes. Due to the inflammasome activity-dependent increase in the levels of pro-inflammatory interleukins (IL-1β, IL-18), inflammation is initiated, resulting in tissue injury in various organs, the brain and the spinal cord included. Similarly, in age-related diseases of the central nervous system (CNS), inflammasome activation is a prominent moment, in which cells of the neurovascular unit occupy a significant position. In this review, we discuss the inflammatory changes in normal aging and summarize the current knowledge on the role of inflammasomes and contributing mechanisms in common CNS diseases, namely Alzheimer’s disease, Parkinson’s disease, amyotrophic lateral sclerosis and stroke, all of which occur more frequently with aging.
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Affiliation(s)
- Ádám Mészáros
- Institute of Biophysics, Biological Research Centre, 6726 Szeged, Hungary; (Á.M.); (K.M.); (B.N.); (Z.H.); (Á.N.-T.); (I.W.)
- Doctoral School of Biology, University of Szeged, 6726 Szeged, Hungary
| | - Kinga Molnár
- Institute of Biophysics, Biological Research Centre, 6726 Szeged, Hungary; (Á.M.); (K.M.); (B.N.); (Z.H.); (Á.N.-T.); (I.W.)
- Theoretical Medicine Doctoral School, University of Szeged, 6720 Szeged, Hungary
| | - Bernát Nógrádi
- Institute of Biophysics, Biological Research Centre, 6726 Szeged, Hungary; (Á.M.); (K.M.); (B.N.); (Z.H.); (Á.N.-T.); (I.W.)
- Foundation for the Future of Biomedical Sciences in Szeged, Szeged Scientists Academy, 6720 Szeged, Hungary
| | - Zsófia Hernádi
- Institute of Biophysics, Biological Research Centre, 6726 Szeged, Hungary; (Á.M.); (K.M.); (B.N.); (Z.H.); (Á.N.-T.); (I.W.)
- Foundation for the Future of Biomedical Sciences in Szeged, Szeged Scientists Academy, 6720 Szeged, Hungary
| | - Ádám Nyúl-Tóth
- Institute of Biophysics, Biological Research Centre, 6726 Szeged, Hungary; (Á.M.); (K.M.); (B.N.); (Z.H.); (Á.N.-T.); (I.W.)
- Vascular Cognitive Impairment and Neurodegeneration Program, Reynolds Oklahoma Center on Aging/Oklahoma Center for Geroscience, Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Imola Wilhelm
- Institute of Biophysics, Biological Research Centre, 6726 Szeged, Hungary; (Á.M.); (K.M.); (B.N.); (Z.H.); (Á.N.-T.); (I.W.)
- Institute of Life Sciences, Vasile Goldiş Western University of Arad, 310414 Arad, Romania
| | - István A. Krizbai
- Institute of Biophysics, Biological Research Centre, 6726 Szeged, Hungary; (Á.M.); (K.M.); (B.N.); (Z.H.); (Á.N.-T.); (I.W.)
- Institute of Life Sciences, Vasile Goldiş Western University of Arad, 310414 Arad, Romania
- Correspondence: ; Tel.: +36-62-599-794
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18
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Xu S, Lu J, Shao A, Zhang JH, Zhang J. Glial Cells: Role of the Immune Response in Ischemic Stroke. Front Immunol 2020; 11:294. [PMID: 32174916 PMCID: PMC7055422 DOI: 10.3389/fimmu.2020.00294] [Citation(s) in RCA: 311] [Impact Index Per Article: 77.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 02/05/2020] [Indexed: 12/16/2022] Open
Abstract
Ischemic stroke, which accounts for 75-80% of all strokes, is the predominant cause of morbidity and mortality worldwide. The post-stroke immune response has recently emerged as a new breakthrough target in the treatment strategy for ischemic stroke. Glial cells, including microglia, astrocytes, and oligodendrocytes, are the primary components of the peri-infarct environment in the central nervous system (CNS) and have been implicated in post-stroke immune regulation. However, increasing evidence suggests that glial cells exert beneficial and detrimental effects during ischemic stroke. Microglia, which survey CNS homeostasis and regulate innate immune responses, are rapidly activated after ischemic stroke. Activated microglia release inflammatory cytokines that induce neuronal tissue injury. By contrast, anti-inflammatory cytokines and neurotrophic factors secreted by alternatively activated microglia are beneficial for recovery after ischemic stroke. Astrocyte activation and reactive gliosis in ischemic stroke contribute to limiting brain injury and re-establishing CNS homeostasis. However, glial scarring hinders neuronal reconnection and extension. Neuroinflammation affects the demyelination and remyelination of oligodendrocytes. Myelin-associated antigens released from oligodendrocytes activate peripheral T cells, thereby resulting in the autoimmune response. Oligodendrocyte precursor cells, which can differentiate into oligodendrocytes, follow an ischemic stroke and may result in functional recovery. Herein, we discuss the mechanisms of post-stroke immune regulation mediated by glial cells and the interaction between glial cells and neurons. In addition, we describe the potential roles of various glial cells at different stages of ischemic stroke and discuss future intervention targets.
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Affiliation(s)
- Shenbin Xu
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Jianan Lu
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Anwen Shao
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - John H Zhang
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA, United States.,Department of Anesthesiology, School of Medicine, Loma Linda University, Loma Linda, CA, United States.,Department of Neurosurgery, School of Medicine, Loma Linda University, Loma Linda, CA, United States
| | - Jianmin Zhang
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Brain Research Institute, Zhejiang University, Hangzhou, China.,Collaborative Innovation Center for Brain Science, Zhejiang University, Hangzhou, China
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19
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Li ZG, Shui SF, Han XW, Yan L. NLRP10 ablation protects against ischemia/reperfusion-associated brain injury by suppression of neuroinflammation. Exp Cell Res 2020; 389:111912. [PMID: 32084391 DOI: 10.1016/j.yexcr.2020.111912] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 02/11/2020] [Accepted: 02/12/2020] [Indexed: 12/19/2022]
Abstract
Ischemic stroke leads to neuronal cell death and induces a cascade of inflammatory signals that results in secondary brain damage. Although constant efforts to develop therapeutic strategies and to reveal the molecular mechanism resulting in the physiopathology of this disease, much still remains unclear. Membrane-bound Toll-like receptors (TLRs) and cytosolic nucleotide binding oligomerization domain (NOD)-like receptors (NLRs) are two major families of pattern recognition receptors that initiate pro-inflammatory signaling pathways. In the present study, we explored the role of NLRP10 in regulating inflammatory responses in acute ischemic stroke using the wild type (WT) and NLRP10 knockout (KO) mice by inducing middle cerebral artery occlusion/reperfusion (MCAO) injuries. The study first showed that NLRP10 was over-expressed in the ischemic penumbra of WT mice. Then, the brain infarct volume was significantly decreased, and the moving activity was improved post-MCAO in mice with NLRP10 knockout. Apoptosis was also alleviated by NLRP10-knockout, as evidenced by the decreased number of TUNEL-staining cells. Further, NLRP10 deficiency attenuated the activation of glia cells in hippocampus of mice with MCAO operation. NLRP10 inhibition ameliorated the levels of inflammatory factors in peripheral blood serum and hippocampus of mice after stroke. The activation of toll-like receptor (TLR)-4/nuclear factor-κB (NF-κB) signaling pathways was markedly suppressed by NLRP10 ablation in mice after MCAO treatment. Importantly, inflammasome, including NLRP12, ASC and Caspase-1, induced by MCAO in hippocampus of mice was clearly impeded by the loss of NLRP10. The results above were mainly verified in LPS-incubated astrocytes in the absence of NLRP10. Correspondingly, in LPS-treated astrocytes, NLRP10 knockout-reduced inflammation via impairing TLR-4/NF-κB and NLRP12/ASC/Caspase-1 pathways was evidently restored by over-expressing NLRP10. Therefore, the results above indicated an essential role of NLRP10 in regulating ischemic stroke, presenting NLRP10 as a promising target to protect human against stroke.
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Affiliation(s)
- Zhi-Guo Li
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou City, Henan Province, 450052, China.
| | - Shao-Feng Shui
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou City, Henan Province, 450052, China
| | - Xin-Wei Han
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou City, Henan Province, 450052, China
| | - Lei Yan
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou City, Henan Province, 450052, China
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20
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Fiery Cell Death: Pyroptosis in the Central Nervous System. Trends Neurosci 2019; 43:55-73. [PMID: 31843293 DOI: 10.1016/j.tins.2019.11.005] [Citation(s) in RCA: 198] [Impact Index Per Article: 39.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 11/01/2019] [Accepted: 11/13/2019] [Indexed: 12/14/2022]
Abstract
Pyroptosis ('fiery death') is an inflammatory type of regulated cell death (RCD), which occurs downstream of inflammasome activation. Pyroptosis is mediated directly by the recently identified family of pore-forming proteins known as gasdermins, the best characterized of which is gasdermin D (GSDMD). Recent investigations implicate pyroptosis in the pathogenesis of multiple neurological diseases. In this review, we discuss molecular mechanisms that drive pyroptosis, evidence for pyroptosis within the CNS, and emerging therapeutic strategies for its inhibition in the context of neurological disease.
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21
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Cheng Z, Zhang M, Ling C, Zhu Y, Ren H, Hong C, Qin J, Liu T, Wang J. Neuroprotective Effects of Ginsenosides against Cerebral Ischemia. Molecules 2019; 24:molecules24061102. [PMID: 30897756 PMCID: PMC6471240 DOI: 10.3390/molecules24061102] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 03/07/2019] [Accepted: 03/09/2019] [Indexed: 12/13/2022] Open
Abstract
Ginseng has been used worldwide as traditional medicine for thousands of years, and ginsenosides have been proved to be the main active components for their various pharmacological activities. Based on their structures, ginsenosides can be divided into ginseng diol-type A and ginseng triol-type B with different pharmacological effects. In this study, six ginsenosides, namely ginsenoside Rb1, Rh2, Rg3, Rg5 as diol-type ginseng saponins, and Rg1 and Re as triol-type ginseng saponins, which were reported to be effective for ischemia-reperfusion (I/R) treatment, were chosen to compare their protective effects on cerebral I/R injury, and their mechanisms were studied by in vitro and in vivo experiments. It was found that all ginsenosides could reduce reactive oxygen species (ROS), inhibit apoptosis and increase mitochondrial membrane potential in cobalt chloride-induced (CoCl₂-induced) PC12 cells injury model, and they could reduce cerebral infarction volume, brain neurological dysfunction of I/R rats in vivo. The results of immunohistochemistry and western blot showed that the expression of Toll-like receptor 4 (TLR4), myeloid differentiation factor 88 (MyD88), silencing information regulator (SIRT1) and nuclear transcription factor P65 (NF-κB) in hippocampal CA1 region of some ginsenoside groups were also reduced. In general, the effect on cerebral ischemia of Rb1 and Rg3 was significantly improved compared with the control group, and was the strongest among all the ginsenosides. The effect on SIRT1 activation of ginsenoside Rb1 and the inhibition effect of TLR4/MyD88 protein expression of ginsenoside Rb1 and Rg3 were significantly stronger than that of other groups. The results indicated that ginsenoside Rg1, Rb1, Rh2, Rg3, Rg5 and Re were effective in protecting the brain against ischemic injury, and ginsenoside Rb1 and Rg3 have the strongest therapeutic activities in all the tested ginsenosides. Their neuroprotective mechanism is associated with TLR4/MyD88 and SIRT1 activation signaling pathways, and they can reduce cerebral ischemic injury by inhibiting NF-κB transcriptional activity and the expression of proinflammatory cytokines, including interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6).
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Affiliation(s)
- Zhekang Cheng
- School of Pharmacy, Minzu University of China & Key Laboratory of Ethnomedicine, Ministry of Education, Beijing 100081, China.
- Department of Pharmaceutics, School of Pharmacy, Fudan University & Key Laboratory of Smart Drug Delivery, Ministry of Education, Shanghai 201203, China.
| | - Meng Zhang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
| | - Chengli Ling
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 610072, China.
| | - Ying Zhu
- Institute of Tropical Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong, China.
| | - Hongwei Ren
- Department of Pharmaceutics, School of Pharmacy, Fudan University & Key Laboratory of Smart Drug Delivery, Ministry of Education, Shanghai 201203, China.
| | - Chao Hong
- Department of Pharmaceutics, School of Pharmacy, Fudan University & Key Laboratory of Smart Drug Delivery, Ministry of Education, Shanghai 201203, China.
| | - Jing Qin
- Department of Pharmaceutics, School of Pharmacy, Fudan University & Key Laboratory of Smart Drug Delivery, Ministry of Education, Shanghai 201203, China.
| | - Tongxiang Liu
- School of Pharmacy, Minzu University of China & Key Laboratory of Ethnomedicine, Ministry of Education, Beijing 100081, China.
| | - Jianxin Wang
- Department of Pharmaceutics, School of Pharmacy, Fudan University & Key Laboratory of Smart Drug Delivery, Ministry of Education, Shanghai 201203, China.
- Institute of Integrative Medicine, Fudan University, Shanghai 201203, China.
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22
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Abi Nahed R, Reynaud D, Borg AJ, Traboulsi W, Wetzel A, Sapin V, Brouillet S, Dieudonné MN, Dakouane-Giudicelli M, Benharouga M, Murthi P, Alfaidy N. NLRP7 is increased in human idiopathic fetal growth restriction and plays a critical role in trophoblast differentiation. J Mol Med (Berl) 2019; 97:355-367. [PMID: 30617930 DOI: 10.1007/s00109-018-01737-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 12/18/2018] [Accepted: 12/21/2018] [Indexed: 12/13/2022]
Abstract
Fetal growth restriction (FGR) the leading cause of perinatal mortality and morbidity is highly related to abnormal placental development, and placentas from FGR pregnancies are often characterized by increased inflammation. However, the mechanisms of FGR-associated inflammation are far from being understood. NLRP7, a member of a family of receptors involved in the innate immune responses, has been shown to be associated with gestational trophoblastic diseases. Here, we characterized the expression and the functional role of NLRP7 in the placenta and investigated its involvement in the pathogenesis of FGR. We used primary trophoblasts and placental explants that were collected during early pregnancy, and established trophoblast-derived cell lines, human placental villi, and serum samples from early pregnancy (n = 38) and from FGR (n = 40) and age-matched controls (n = 32). Our results show that NLRP7 (i) is predominantly expressed in the trophoblasts during the hypoxic period of placental development and its expression is upregulated by hypoxia and (ii) increases trophoblast proliferation ([3H]-thymidine) and controls the precocious differentiation of trophoblasts towards syncytium (syncytin 1 and 2 and β-hCG production and xCELLigence analysis) and towards invasive extravillous trophoblast (2D and 3D cultures). We have also demonstrated that NLRP7 inflammasome activation in trophoblast cells increases IL-1β, but not IL-18 secretion. In relation to the FGR, we demonstrated that major components of NLRP7 inflammasome machinery are increased and that IL-1β but not IL-18 circulating levels are increased in FGR. Altogether, our results identified NLRP7 as a critical placental factor and provided evidence for its deregulation in FGR. NLRP7 inflammasome is abundantly expressed by trophoblast cells. It is regulated by a key parameter of placental development, hypoxia. It controls trophoblast proliferation, migration, and invasion and exhibits anti-apoptotic role. NLRP7 machinery is deregulated in FGR pregnancies. KEY MESSAGES: NLRP7 inflammasome is abundantly expressed by trophoblast cells. It is regulated by a key parameter of placental development, hypoxia. It controls trophoblast proliferation, migration, and invasion and exhibits anti-apoptotic role. NLRP7 machinery is deregulated in FGR pregnancies.
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Affiliation(s)
- R Abi Nahed
- Institut National de la Santé et de la Recherche Médicale, Unité 1036, Grenoble, France.,Université Grenoble-Alpes, 38000, Grenoble, France.,Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Biosciences and Biotechnology Institute of Grenoble, Grenoble, France
| | - D Reynaud
- Institut National de la Santé et de la Recherche Médicale, Unité 1036, Grenoble, France.,Université Grenoble-Alpes, 38000, Grenoble, France.,Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Biosciences and Biotechnology Institute of Grenoble, Grenoble, France
| | - A J Borg
- Department of Medicine, School of Clinical Sciences, Monash University and the Ritchie Centre, Hudson Institute of Medical Research, Clayton, Victoria, Australia.,Department of Maternal-Fetal Medicine, Pregnancy Research Centre, The Royal Women's Hospital, Parkville, Victoria, Australia
| | - W Traboulsi
- Institut National de la Santé et de la Recherche Médicale, Unité 1036, Grenoble, France.,Université Grenoble-Alpes, 38000, Grenoble, France.,Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Biosciences and Biotechnology Institute of Grenoble, Grenoble, France
| | - A Wetzel
- Université Grenoble-Alpes, 38000, Grenoble, France.,Hôpital Couple-Enfant, Centre Clinique et Biologique d'Assistance Médicale à la Procréation-CECOS, Centre Hospitalier Universitaire de Grenoble, 38700, La Tronche, France
| | - V Sapin
- GReD, UMR CNRS 6293 INSERM 1103 Université Clermont Auvergne, CRBC, UFR de Médecine et des Professions Paramédicales, 63000, Clermont-Ferrand, France
| | - S Brouillet
- Institut National de la Santé et de la Recherche Médicale, Unité 1036, Grenoble, France.,Université Grenoble-Alpes, 38000, Grenoble, France.,Hôpital Couple-Enfant, Centre Clinique et Biologique d'Assistance Médicale à la Procréation-CECOS, Centre Hospitalier Universitaire de Grenoble, 38700, La Tronche, France
| | - M N Dieudonné
- GIG - EA 7404 Université de Versailles-Saint-Quentin-en-Yvelines, Université Paris-Saclay, Unité de Formation et de Recherche des Sciences de la Santé Simone Veil, Montigny-le-Bretonneux, France
| | - M Dakouane-Giudicelli
- Institut National de la Santé et de la Recherche Médicale, Unité 1179, Montigny-Le-Bretonneux, France
| | - M Benharouga
- Université Grenoble-Alpes, 38000, Grenoble, France.,Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Biosciences and Biotechnology Institute of Grenoble, Grenoble, France.,Unité Mixte de Recherche 5249, Laboratoire de Chimie et Biologie des Métaux, Centre National de la Recherche Scientifique, Grenoble, France
| | - P Murthi
- Department of Medicine, School of Clinical Sciences, Monash University and the Ritchie Centre, Hudson Institute of Medical Research, Clayton, Victoria, Australia.,Department of Maternal-Fetal Medicine, Pregnancy Research Centre, The Royal Women's Hospital, Parkville, Victoria, Australia.,Department of Obstetrics and Gynaecology, The University of Melbourne, Parkville, Victoria, Australia
| | - Nadia Alfaidy
- Institut National de la Santé et de la Recherche Médicale, Unité 1036, Grenoble, France. .,Université Grenoble-Alpes, 38000, Grenoble, France. .,Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Biosciences and Biotechnology Institute of Grenoble, Grenoble, France. .,Unité INSERM U1036, Laboratoire BCI -BIG, CEA Grenoble 17, rue des Martyrs, 38054, Grenoble cedex 9, France.
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23
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Zhang X, Lu X, Yu L, Gu Y, Qu F. Downregulation of NLRP2 inhibits HUVEC viability by inhibiting the MAPK signaling pathway. Mol Med Rep 2018; 19:85-92. [PMID: 30431084 PMCID: PMC6297776 DOI: 10.3892/mmr.2018.9625] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 09/14/2018] [Indexed: 11/19/2022] Open
Abstract
Nucleotide-binding oligomerization domain (NOD)-like receptor proteins (NLRPs) are a subfamily of NOD-like receptors (NLRs) that mainly participate in innate immunity. Among the 14 NLRPs, studies on NLRP2 are few and mostly focus on its functions in reproduction and embryonic development. To the best of the authors' knowledge, there has been no research on the function of NLRP2 in human umbilical vein endothelial cells (HUVECs). The present study knockdown the expression of NLRP2 by transfecting a short interfering (si)RNA (siNLRP2) into HUVECs and investigating its effects on HUVECs. It was identified using a Cell Counting kit-8 assay that knockdown of NLRP2 can inhibit cell proliferation in HUVECs. The results of wound healing and Transwell assays indicated that migration and invasion were also suppressed by siNLRP2 transfection in HUVECs. Flow cytometry demonstrated that siNLRP2 induced cell cycle arrest and apoptosis in HUVECs. Western blot analysis revealed that the expression levels of cell cycle and apoptosis-associated proteins were markedly changed. In addition, knockdown of NLRP2 inhibited the mitogen-activated protein kinase (MAPK) signaling pathway by elevating extracellular signal-regulated kinase phosphorylation levels and reducing proto-oncogene serine/threonine-protein kinase expression. Taken together, it was concluded that NLRP2 served an important role in maintaining cell viability, proliferation and motility in HUVECs, mainly by promoting the MAPK signaling pathway.
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Affiliation(s)
- Xiaolu Zhang
- Department of Laboratory Medicine, Yuhuangding Hospital of Qingdao University, Yantai, Shandong 264000, P.R. China
| | - Xinlei Lu
- Department of Cardiology, Weihai Central Hospital, Weihai, Shandong 264200, P.R. China
| | - Limei Yu
- Department of Laboratory Medicine, Yuhuangding Hospital of Qingdao University, Yantai, Shandong 264000, P.R. China
| | - Yufeng Gu
- Department of Laboratory Medicine, Yuhuangding Hospital of Qingdao University, Yantai, Shandong 264000, P.R. China
| | - Fuzheng Qu
- Department of Cardiology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, Shandong 264100, P.R. China
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24
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Kerr N, García-Contreras M, Abbassi S, Mejias NH, Desousa BR, Ricordi C, Dietrich WD, Keane RW, de Rivero Vaccari JP. Inflammasome Proteins in Serum and Serum-Derived Extracellular Vesicles as Biomarkers of Stroke. Front Mol Neurosci 2018; 11:309. [PMID: 30233311 PMCID: PMC6131639 DOI: 10.3389/fnmol.2018.00309] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 08/14/2018] [Indexed: 12/19/2022] Open
Abstract
The inflammasome is a key contributor to the inflammatory innate immune response after stroke. We have previously shown that inflammasome proteins are released in extracellular vesicles (EV) after brain and spinal cord injury. In addition, we have shown that inflammasome proteins offer great promise as biomarkers of central nervous system (CNS) injury following brain trauma. In the present study, we used a Simple Plex Assay (Protein Simple), a novel multi-analyte automated microfluidic immunoassay platform, to analyze serum and serum-derived EV samples from stroke patients and control subjects for inflammasome protein levels of caspase-1, apoptosis-associated speck-like protein containing a caspase-recruitment domain (ASC), Interleukins (IL)-1β, and (IL)-18. Receiver operator characteristic (ROC) curves with associated confidence intervals obtained from the analysis of serum samples revealed that the area under the curve (AUC) for ASC was 0.99 with a confidence interval between 0.9914 and 1.004, whereas the AUC for caspase-1, IL-1β, and IL-18 were 0.75, 0.61, and 0.67, respectively. Thus, these data indicate that ASC is a potential biomarker of stroke and highlight the role of the inflammasome in the inflammatory response after brain ischemia.
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Affiliation(s)
- Nadine Kerr
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami, Miami, FL, United States
| | - Marta García-Contreras
- Diabetes Research Institute, Miller School of Medicine, University of Miami, Miami, FL, United States
| | - Sam Abbassi
- Department of Physiology and Biophysics, University of Miami, Miami, FL, United States
| | - Nancy H Mejias
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami, Miami, FL, United States
| | - Brandon R Desousa
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami, Miami, FL, United States
| | - Camillo Ricordi
- Diabetes Research Institute, Miller School of Medicine, University of Miami, Miami, FL, United States
| | - W Dalton Dietrich
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami, Miami, FL, United States.,InflamaCORE, LLC, Miami, FL, United States
| | - Robert W Keane
- Department of Physiology and Biophysics, University of Miami, Miami, FL, United States.,InflamaCORE, LLC, Miami, FL, United States
| | - Juan Pablo de Rivero Vaccari
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami, Miami, FL, United States.,InflamaCORE, LLC, Miami, FL, United States
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25
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Cheon SY, Kim EJ, Kim SY, Kim JM, Kam EH, Park JK, Koo BN. Apoptosis Signal-regulating Kinase 1 Silencing on Astroglial Inflammasomes in an Experimental Model of Ischemic Stroke. Neuroscience 2018; 390:218-230. [PMID: 30172704 DOI: 10.1016/j.neuroscience.2018.08.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 08/14/2018] [Accepted: 08/21/2018] [Indexed: 12/21/2022]
Abstract
Activation of the inflammasome complex contributes to the inflammatory response and cell death under pathologic conditions. The nucleotide-binding oligomerization domain-like receptor pyrin domain-containing 2 (NLRP2) inflammasome is activated in astrocytes after cerebral ischemia, which can aggravate ischemic damage. Apoptosis signal-regulating kinase 1 (ASK1) is an early activator and immune-regulator after ischemic injury, that can lead to cell death. The objective of the present study was to evaluate the role of ASK1 in controlling NLRP2 inflammasomes in astrocytes after cerebral ischemia. In a mouse model of ischemic stroke, the levels of NLRP2 inflammasome components, and interleukin (IL)-1β and IL-18, were quantified in different brain regions. In addition, an astrocyte cell line was subjected to oxygen-glucose deprivation and reperfusion (OGD/R) injury, and the levels of NLRP2 inflammasome factors, IL-1β and IL-18 were evaluated. Ischemic brain injury activated astrocytes. The levels of NLRP2 inflammasome components, IL-1β and IL-18 productions, and cell death increased in the cortex and striatum after ischemic injury. In cultured astrocytes, NLRP2 inflammasome components, IL-1β and IL-18 levels were upregulated after OGD/R. ASK1 silencing or inhibition efficiently reduced NLRP2 inflammasome components and pro-inflammatory cytokine levels in mice and cultured astrocytes. Our findings identify a key role for ASK1 in regulating astroglial inflammasomes after cerebral ischemia. We suggest ASK1 as one of the main targets for astroglial inflammasomes in ischemic stroke.
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Affiliation(s)
- So Yeong Cheon
- Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Eun Jung Kim
- Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea; Department of Anesthesiology and Pain Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - So Yeon Kim
- Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea; Department of Anesthesiology and Pain Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jeong Min Kim
- Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea; Department of Anesthesiology and Pain Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Eun Hee Kam
- Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jong-Kwang Park
- Department of Anesthesiology and Pain Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Bon-Nyeo Koo
- Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea; Department of Anesthesiology and Pain Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.
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26
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Vats K, Sarmah D, Kaur H, Wanve M, Kalia K, Borah A, Dave KR, Yavagal DR, Bhattacharya P. Inflammasomes in stroke: a triggering role for acid-sensing ion channels. Ann N Y Acad Sci 2018; 1431:14-24. [DOI: 10.1111/nyas.13852] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 04/21/2018] [Accepted: 04/23/2018] [Indexed: 01/23/2023]
Affiliation(s)
- Kanchan Vats
- Department of Pharmacology and Toxicology; National Institute of Pharmaceutical Education and Research (NIPER) Ahmedabad; Gandhinagar Gujarat India
| | - Deepaneeta Sarmah
- Department of Pharmacology and Toxicology; National Institute of Pharmaceutical Education and Research (NIPER) Ahmedabad; Gandhinagar Gujarat India
| | - Harpreet Kaur
- Department of Pharmacology and Toxicology; National Institute of Pharmaceutical Education and Research (NIPER) Ahmedabad; Gandhinagar Gujarat India
| | - Madhuri Wanve
- Department of Pharmacology and Toxicology; National Institute of Pharmaceutical Education and Research (NIPER) Ahmedabad; Gandhinagar Gujarat India
| | - Kiran Kalia
- Department of Pharmacology and Toxicology; National Institute of Pharmaceutical Education and Research (NIPER) Ahmedabad; Gandhinagar Gujarat India
| | - Anupom Borah
- Cellular and Molecular Neurobiology Laboratory; Department of Life Science and Bioinformatics; Assam University; Silchar Assam India
| | - Kunjan R. Dave
- Department of Neurology; University of Miami Miller School of Medicine; Miami Florida
| | - Dileep R. Yavagal
- Department of Neurology; University of Miami Miller School of Medicine; Miami Florida
| | - Pallab Bhattacharya
- Department of Pharmacology and Toxicology; National Institute of Pharmaceutical Education and Research (NIPER) Ahmedabad; Gandhinagar Gujarat India
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27
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A novel tetrahydroisoquinoline (THIQ) analogue induces mitochondria-dependent apoptosis. Eur J Med Chem 2018; 150:719-728. [PMID: 29573707 DOI: 10.1016/j.ejmech.2018.03.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 03/04/2018] [Accepted: 03/05/2018] [Indexed: 12/31/2022]
Abstract
Lung cancer continues to be a leading cause of cancer-related death worldwide, with non-small cell lung cancer (NSCLC) accounting for more than 80% of lung cancer cases. Current therapies for NSCLC have only limited effect and treatment resistance develops rapidly. In a previous study, we have shown that C1-phenylethynyl tetrahydroisoquinoline (THIQ) analogue 4 has anti-proliferative activity against PC3 human prostate cancer cells. However, this anticancer effect was achieved with relatively high IC50 in A549 lung cancer cells. To improve the potency of the drug, in the present study, a series of novel THIQ analogues (analogues 5a-d) were prepared by using an oxidative C-H functionalization strategy, and their potential anticancer activities on A549 lung cancer cells were investigated. Among these analogues, analogue 5c can markedly inhibit A549 cell proliferation in a dose-dependent manner with a reasonable IC50 of 14.61 ± 1.03 μM. This effect was mediated by analogue 5c-induced G0/G1 phase arrest and cell apoptosis. Treatment with analogue 5c was shown to induce reactive oxygen species (ROS) accumulation, disruption of mitochondrial membrane potential, reduction of glutathione, elevation of intracellular calcium ion (Ca2+), and activation of Caspase-3. Furthermore, analogue 5c can lead to DNA double-strand break and the activation of p53 pathway in A549 cells. In conclusion, the oxidative C-H functionalization strategy to generate analogue 5c could improve the drug anticancer efficacy by inducing mitochondria-dependent apoptosis in A549 cells.
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28
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NLRs as Helpline in the Brain: Mechanisms and Therapeutic Implications. Mol Neurobiol 2018; 55:8154-8178. [DOI: 10.1007/s12035-018-0957-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 02/12/2018] [Indexed: 12/13/2022]
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29
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Nrf2 inhibits NLRP3 inflammasome activation through regulating Trx1/TXNIP complex in cerebral ischemia reperfusion injury. Behav Brain Res 2017; 336:32-39. [PMID: 28851669 DOI: 10.1016/j.bbr.2017.06.027] [Citation(s) in RCA: 198] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 06/16/2017] [Accepted: 06/16/2017] [Indexed: 12/31/2022]
Abstract
The nod-like receptor protein 3 (NLRP3) inflammasome has a critical role in inflammation damage in ischemic injury, and the activation of the inflammasome is closely related to the interaction with thioredoxin interacting protein (TXNIP), which dissociates from the thioredoxin1 (Trx1)/TXNIP complex under oxidative stress. However, the negative regulator of NLRP3 inflammasome activation has not been fully investigated. Nuclear factor erythroid 2-related factor 2 (Nrf2) takes on a critical part in the antioxidant stress system, that controls the driven genes of antioxidant response element (ARE). Activate Nrf2 could inhibit the activation of NLRP3 inflammasome in acute liver injury and severe lupus nephritis. We aimed to explore the protective effect of Nrf2 in inhibiting the NLPR3 inflammasome formulation through the Trx1/TXNIP complex in cerebral ischemia reperfusion (cerebral I/R) injury. Middle cerebral artery occlusion/reperfusion (MCAO/R) model was used to imitate ischemic insult. Nrf2 was activated by tert-butylhydroquinone (tBHQ) intraperitoneally (i.p.) injection (16.7mg/kg), Nrf2,Trx1 and NLRP3 siRNAs were infused into the left paracele (12μl per rat), protein and mRNA levels were assessed by Western blot, qRT-PCR. ELISA was used for IL-1β and IL-18 activity measurements. After upregulating Nrf2, the expression of TXNIP in cytoplasm, NLRP3 inflammasome, and downstream factors caspase-1, IL-18, and IL-1β were significantly reduced, and Nrf2 knockdown yielded the opposite results. Trx1 knockdown produced the same effect of Nrf2 inhibition and the protective effect of Nrf2 was mostly abolished. Our results suggested that Nrf2 acted as a protective regulator against NLRP3 inflammasome activation by regulating the Trx1/TXNIP complex, which could possibly represent an innovative insight into the treatment of ischemia and reperfusion injury.
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30
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Fann DYW, Ng GYQ, Poh L, Arumugam TV. Positive effects of intermittent fasting in ischemic stroke. Exp Gerontol 2017; 89:93-102. [PMID: 28115234 DOI: 10.1016/j.exger.2017.01.014] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 12/26/2016] [Accepted: 01/18/2017] [Indexed: 12/18/2022]
Abstract
Intermittent fasting (IF) is a dietary protocol where energy restriction is induced by alternate periods of ad libitum feeding and fasting. Prophylactic intermittent fasting has been shown to extend lifespan and attenuate the progress and severity of age-related diseases such as cardiovascular (e.g. stroke and myocardial infarction), neurodegenerative (e.g. Alzheimer's disease and Parkinson's disease) and cancerous diseases in animal models. Stroke is the second leading cause of death, and lifestyle risk factors such as obesity and physical inactivity have been associated with elevated risks of stroke in humans. Recent studies have shown that prophylactic IF may mitigate tissue damage and neurological deficit following ischemic stroke by a mechanism(s) involving suppression of excitotoxicity, oxidative stress, inflammation and cell death pathways in animal stroke models. This review summarizes data supporting the potential hormesis mechanisms of prophylactic IF in animal models, and with a focus on findings from animal studies of prophylactic IF in stroke in our laboratory.
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Affiliation(s)
- David Yang-Wei Fann
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Gavin Yong Quan Ng
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Luting Poh
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Thiruma V Arumugam
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
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