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Palumbo L, Carinci M, Guarino A, Asth L, Zucchini S, Missiroli S, Rimessi A, Pinton P, Giorgi C. The NLRP3 Inflammasome in Neurodegenerative Disorders: Insights from Epileptic Models. Biomedicines 2023; 11:2825. [PMID: 37893198 PMCID: PMC10604217 DOI: 10.3390/biomedicines11102825] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 10/12/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023] Open
Abstract
Neuroinflammation represents a dynamic process of defense and protection against the harmful action of infectious agents or other detrimental stimuli in the central nervous system (CNS). However, the uncontrolled regulation of this physiological process is strongly associated with serious dysfunctional neuronal issues linked to the progression of CNS disorders. Moreover, it has been widely demonstrated that neuroinflammation is linked to epilepsy, one of the most prevalent and serious brain disorders worldwide. Indeed, NLRP3, one of the most well-studied inflammasomes, is involved in the generation of epileptic seizures, events that characterize this pathological condition. In this context, several pieces of evidence have shown that the NLRP3 inflammasome plays a central role in the pathophysiology of mesial temporal lobe epilepsy (mTLE). Based on an extensive review of the literature on the role of NLRP3-dependent inflammation in epilepsy, in this review we discuss our current understanding of the connection between NLRP3 inflammasome activation and progressive neurodegeneration in epilepsy. The goal of the review is to cover as many of the various known epilepsy models as possible, providing a broad overview of the current literature. Lastly, we also propose some of the present therapeutic strategies targeting NLRP3, aiming to provide potential insights for future studies.
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Affiliation(s)
- Laura Palumbo
- Department of Medical Sciences, Section of Experimental Medicine, University of Ferrara, 44121 Ferrara, Italy; (L.P.); (M.C.); (S.M.); (A.R.); (P.P.)
| | - Marianna Carinci
- Department of Medical Sciences, Section of Experimental Medicine, University of Ferrara, 44121 Ferrara, Italy; (L.P.); (M.C.); (S.M.); (A.R.); (P.P.)
| | - Annunziata Guarino
- Department of Neuroscience and Rehabilitation, University of Ferrara, Via Fossato di Mortara 70, 44121 Ferrara, Italy; (A.G.); (L.A.); (S.Z.)
| | - Laila Asth
- Department of Neuroscience and Rehabilitation, University of Ferrara, Via Fossato di Mortara 70, 44121 Ferrara, Italy; (A.G.); (L.A.); (S.Z.)
| | - Silvia Zucchini
- Department of Neuroscience and Rehabilitation, University of Ferrara, Via Fossato di Mortara 70, 44121 Ferrara, Italy; (A.G.); (L.A.); (S.Z.)
- Laboratory of Technologies for Advanced Therapy (LTTA), Technopole of Ferrara, 44121 Ferrara, Italy
| | - Sonia Missiroli
- Department of Medical Sciences, Section of Experimental Medicine, University of Ferrara, 44121 Ferrara, Italy; (L.P.); (M.C.); (S.M.); (A.R.); (P.P.)
- Laboratory of Technologies for Advanced Therapy (LTTA), Technopole of Ferrara, 44121 Ferrara, Italy
| | - Alessandro Rimessi
- Department of Medical Sciences, Section of Experimental Medicine, University of Ferrara, 44121 Ferrara, Italy; (L.P.); (M.C.); (S.M.); (A.R.); (P.P.)
- Laboratory of Technologies for Advanced Therapy (LTTA), Technopole of Ferrara, 44121 Ferrara, Italy
- Center of Research for Innovative Therapies in Cystic Fibrosis, University of Ferrara, 44121 Ferrara, Italy
| | - Paolo Pinton
- Department of Medical Sciences, Section of Experimental Medicine, University of Ferrara, 44121 Ferrara, Italy; (L.P.); (M.C.); (S.M.); (A.R.); (P.P.)
- Laboratory of Technologies for Advanced Therapy (LTTA), Technopole of Ferrara, 44121 Ferrara, Italy
- Center of Research for Innovative Therapies in Cystic Fibrosis, University of Ferrara, 44121 Ferrara, Italy
| | - Carlotta Giorgi
- Department of Medical Sciences, Section of Experimental Medicine, University of Ferrara, 44121 Ferrara, Italy; (L.P.); (M.C.); (S.M.); (A.R.); (P.P.)
- Laboratory of Technologies for Advanced Therapy (LTTA), Technopole of Ferrara, 44121 Ferrara, Italy
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Muslimov A, Tereshchenko V, Shevyrev D, Rogova A, Lepik K, Reshetnikov V, Ivanov R. The Dual Role of the Innate Immune System in the Effectiveness of mRNA Therapeutics. Int J Mol Sci 2023; 24:14820. [PMID: 37834268 PMCID: PMC10573212 DOI: 10.3390/ijms241914820] [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: 07/13/2023] [Revised: 09/24/2023] [Accepted: 09/28/2023] [Indexed: 10/15/2023] Open
Abstract
Advances in molecular biology have revolutionized the use of messenger RNA (mRNA) as a therapeutic. The concept of nucleic acid therapy with mRNA originated in 1990 when Wolff et al. reported successful expression of proteins in target organs by direct injection of either plasmid DNA or mRNA. It took decades to bring the transfection efficiency of mRNA closer to that of DNA. The next few decades were dedicated to turning in vitro-transcribed (IVT) mRNA from a promising delivery tool for gene therapy into a full-blown therapeutic modality, which changed the biotech market rapidly. Hundreds of clinical trials are currently underway using mRNA for prophylaxis and therapy of infectious diseases and cancers, in regenerative medicine, and genome editing. The potential of IVT mRNA to induce an innate immune response favors its use for vaccination and immunotherapy. Nonetheless, in non-immunotherapy applications, the intrinsic immunostimulatory activity of mRNA directly hinders the desired therapeutic effect since it can seriously impair the target protein expression. Targeting the same innate immune factors can increase the effectiveness of mRNA therapeutics for some indications and decrease it for others, and vice versa. The review aims to present the innate immunity-related 'barriers' or 'springboards' that may affect the development of immunotherapies and non-immunotherapy applications of mRNA medicines.
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Affiliation(s)
- Albert Muslimov
- Scientific Center for Translational Medicine, Sirius University of Science and Technology, Olympic Ave 1, 354340 Sirius, Russia; (V.T.); (D.S.); (V.R.); (R.I.)
- Laboratory of Nano- and Microencapsulation of Biologically Active Substances, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia;
- RM Gorbacheva Research Institute, Pavlov University, L’va Tolstogo 6-8, 197022 St. Petersburg, Russia;
| | - Valeriy Tereshchenko
- Scientific Center for Translational Medicine, Sirius University of Science and Technology, Olympic Ave 1, 354340 Sirius, Russia; (V.T.); (D.S.); (V.R.); (R.I.)
| | - Daniil Shevyrev
- Scientific Center for Translational Medicine, Sirius University of Science and Technology, Olympic Ave 1, 354340 Sirius, Russia; (V.T.); (D.S.); (V.R.); (R.I.)
| | - Anna Rogova
- Laboratory of Nano- and Microencapsulation of Biologically Active Substances, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia;
- Saint-Petersburg Chemical-Pharmaceutical University, Professora Popova 14, 197376 St. Petersburg, Russia
- School of Physics and Engineering, ITMO University, Lomonosova 9, 191002 St. Petersburg, Russia
| | - Kirill Lepik
- RM Gorbacheva Research Institute, Pavlov University, L’va Tolstogo 6-8, 197022 St. Petersburg, Russia;
| | - Vasiliy Reshetnikov
- Scientific Center for Translational Medicine, Sirius University of Science and Technology, Olympic Ave 1, 354340 Sirius, Russia; (V.T.); (D.S.); (V.R.); (R.I.)
- Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, Prospekt Akad. Lavrentyeva 10, 630090 Novosibirsk, Russia
| | - Roman Ivanov
- Scientific Center for Translational Medicine, Sirius University of Science and Technology, Olympic Ave 1, 354340 Sirius, Russia; (V.T.); (D.S.); (V.R.); (R.I.)
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Daily KP, Badr A, Eltobgy M, Estfanous S, Whitham O, Tan MH, Carafice C, Krause K, McNamara A, Hamilton K, Houle S, Gupta S, Gupta GA, Madhu S, Fitzgerald J, Saadey AA, Laster B, Yan P, Webb A, Zhang X, Pietrzak M, Kokiko-Cochran ON, Ghoneim HE, Amer AO. DNA hypomethylation promotes the expression of CASPASE-4 which exacerbates neuroinflammation and amyloid-β deposition in Alzheimer's disease The Ohio State University College of Medicine. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.30.555526. [PMID: 37693600 PMCID: PMC10491177 DOI: 10.1101/2023.08.30.555526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
Alzheimer's Disease (AD) is the 6th leading cause of death in the US. It is established that neuroinflammation contributes to the synaptic loss, neuronal death, and symptomatic decline of AD patients. Accumulating evidence suggests a critical role for microglia, innate immune phagocytes of the brain. For instance, microglia release proinflammatory products such as IL-1β which is highly implicated in AD pathobiology. The mechanisms underlying the transition of microglia to proinflammatory promoters of AD remain largely unknown. To address this gap, we performed Reduced Representation Bisulfite Sequencing (RRBS) to profile global DNA methylation changes in human AD brains compared to no disease controls. We identified differential DNA methylation of CASPASE-4 (CASP4), which when expressed, can be involved in generation of IL-1β and is predominantly expressed in immune cells. DNA upstream of the CASP4 transcription start site was hypomethylated in human AD brains, which was correlated with increased expression of CASP4. Furthermore, microglia from a mouse model of AD (5xFAD) express increased levels of CASP4 compared to wild-type (WT) mice. To study the role of CASP4 in AD, we developed a novel mouse model of AD lacking the mouse ortholog of CASP4, CASP11, which is encoded by mouse Caspase-4 (5xFAD/Casp4-/-). The expression of CASP11 was associated with increased accumulation of pathologic protein aggregate amyloid-β (Aβ) and increased microglial production of IL-1β in 5xFAD mice. Utilizing RNA sequencing, we determined that CASP11 promotes unique transcriptomic phenotypes in 5xFAD mouse brains, including alterations of neuroinflammatory and chemokine signaling pathways. Notably, in vitro, CASP11 promoted generation of IL-1β from macrophages in response to cytosolic Aβ through cleavage of downstream effector Gasdermin D (G SDMD). We describe a role for CASP11 and GSDMD in the generation of IL-1β in response to Aβ and the progression of pathologic inflammation in AD. Overall, our results demonstrate that overexpression of CASP4 due to differential methylation in AD microglia contributes to the progression of AD pathobiology, thus identifying CASP4 as a potential target for immunotherapies for the treatment of AD.
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Affiliation(s)
- Kylene P. Daily
- Department of Microbial Infection and Immunity, Infectious Diseases Institute, The Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Asmaa Badr
- Department of Microbial Infection and Immunity, Infectious Diseases Institute, The Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Mostafa Eltobgy
- Department of Microbial Infection and Immunity, Infectious Diseases Institute, The Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Shady Estfanous
- Department of Microbial Infection and Immunity, Infectious Diseases Institute, The Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Owen Whitham
- Department of Microbial Infection and Immunity, Infectious Diseases Institute, The Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Michelle H. Tan
- Department of Microbial Infection and Immunity, Infectious Diseases Institute, The Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Cierra Carafice
- Department of Microbial Infection and Immunity, Infectious Diseases Institute, The Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Kathrin Krause
- Department of Microbial Infection and Immunity, Infectious Diseases Institute, The Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
- Max Planck Unit for the Science of Pathogens, Berlin, Germany
| | - Andrew McNamara
- Department of Microbial Infection and Immunity, Infectious Diseases Institute, The Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Kaitlin Hamilton
- Department of Microbial Infection and Immunity, Infectious Diseases Institute, The Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Samuel Houle
- Department of Neuroscience, The Ohio State University, Columbus, Ohio 43210
| | - Spandan Gupta
- Department of Microbial Infection and Immunity, Infectious Diseases Institute, The Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Gauruv A. Gupta
- Department of Microbial Infection and Immunity, Infectious Diseases Institute, The Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Shruthi Madhu
- Department of Microbial Infection and Immunity, Infectious Diseases Institute, The Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Julie Fitzgerald
- Department of Neuroscience, The Ohio State University, Columbus, Ohio 43210
| | - Abbey A. Saadey
- Department of Microbial Infection and Immunity, Infectious Diseases Institute, The Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Brooke Laster
- Department of Microbial Infection and Immunity, Infectious Diseases Institute, The Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Pearlly Yan
- Genomics Shared Resource, Comprehensive Cancer Center, USA; Department of Internal Medicine, The Ohio State University, USA; The Ohio State University, Columbus, OH 43210, USA
| | - Amy Webb
- Department of Biomedical Informatics, The Ohio State University, Columbus, OH, USA
| | - Xiaoli Zhang
- Department of Biomedical Informatics, The Ohio State University, Columbus, OH, USA
| | - Maciej Pietrzak
- Department of Biomedical Informatics, The Ohio State University, Columbus, OH, USA
| | | | - Hazem E. Ghoneim
- Department of Microbial Infection and Immunity, Infectious Diseases Institute, The Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Amal O. Amer
- Department of Microbial Infection and Immunity, Infectious Diseases Institute, The Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
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Han YH, Liu XD, Jin MH, Sun HN, Kwon T. Role of NLRP3 inflammasome-mediated neuronal pyroptosis and neuroinflammation in neurodegenerative diseases. Inflamm Res 2023; 72:1839-1859. [PMID: 37725102 DOI: 10.1007/s00011-023-01790-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 08/14/2023] [Accepted: 08/17/2023] [Indexed: 09/21/2023] Open
Abstract
BACKGROUND Neurodegenerative diseases are a common group of neurological disorders characterized by progressive loss of neuronal structure and function leading to cognitive impairment. Recent studies have shown that neuronal pyroptosis mediated by the NLRP3 inflammasome plays a crucial role in the pathogenesis of neurodegenerative diseases. OBJECTIVE AND METHOD The NLRP3 inflammasome is a multiprotein complex that, when activated within cells, triggers an inflammatory response, ultimately leading to pyroptotic cell death of neurons. Pyroptosis is a typical pro-inflammatory programmed cell death process occurring downstream of NLRP3 inflammasome activation, characterized by the formation of pores on the cell membrane by the GSDMD protein, leading to cell lysis and the release of inflammatory factors. It has been found that NLRP3 inflammasome-mediated neuronal pyroptosis is closely associated with the development of various neurodegenerative diseases, such as Alzheimer's disease, traumatic brain injury, and Parkinson's disease. Therefore, inhibiting NLRP3 inflammasome activation and attenuating neuronal pyroptosis could potentially serve as novel strategies for the treatment of neurodegenerative diseases. RESULTS The aim of this review is to explore the role of NLRP3 activation-mediated neuronal pyroptosis and neuroinflammation in neurodegenerative diseases. Firstly, we extensively discuss the relationship between NLRP3 inflammasome-mediated neuronal pyroptosis and neuroinflammation in various neurodegenerative diseases. Subsequently, we further explore the mechanisms driving NLRP3 activation and assembly, as well as the post-translational modifications regulating NLRP3 inflammasome activation. CONCLUSION Understanding these mechanisms will contribute to a deeper understanding of the link between neuronal pyroptosis and neurodegenerative diseases, and hold significant implications for the treatment and prevention of neurodegenerative diseases.
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Affiliation(s)
- Ying-Hao Han
- College of Life Science & Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, 163319, China.
| | - Xiao-Dong Liu
- College of Life Science & Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, 163319, China
| | - Mei-Hua Jin
- College of Life Science & Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, 163319, China
| | - Hu-Nan Sun
- College of Life Science & Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, 163319, China.
| | - Taeho Kwon
- Primate Resources Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Jeongeup-si, Jeonbuk, 56216, Republic of Korea.
- Department of Functional Genomics, KRIBB School of Bioscience, University of Science and Technology, Daejeon, 34113, Republic of Korea.
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Chen X, Yuan S, Mi L, Long Y, He H. Pannexin1: insight into inflammatory conditions and its potential involvement in multiple organ dysfunction syndrome. Front Immunol 2023; 14:1217366. [PMID: 37711629 PMCID: PMC10498923 DOI: 10.3389/fimmu.2023.1217366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 08/10/2023] [Indexed: 09/16/2023] Open
Abstract
Sepsis represents a global health concern, and patients with severe sepsis are at risk of experiencing MODS (multiple organ dysfunction syndrome), which is associated with elevated mortality rates and a poorer prognosis. The development of sepsis involves hyperactive inflammation, immune disorder, and disrupted microcirculation. It is crucial to identify targets within these processes to develop therapeutic interventions. One such potential target is Panx1 (pannexin-1), a widely expressed transmembrane protein that facilitates the passage of molecules smaller than 1 KDa, such as ATP. Accumulating evidence has implicated the involvement of Panx1 in sepsis-associated MODS. It attracts immune cells via the purinergic signaling pathway, mediates immune responses via the Panx1-IL-33 axis, promotes immune cell apoptosis, regulates blood flow by modulating VSMCs' and vascular endothelial cells' tension, and disrupts microcirculation by elevating endothelial permeability and promoting microthrombosis. At the level of organs, Panx1 contributes to inflammatory injury in multiple organs. Panx1 primarily exacerbates injury and hinders recovery, making it a potential target for sepsis-induced MODS. While no drugs have been developed explicitly against Panx1, some compounds that inhibit Panx1 hemichannels have been used extensively in experiments. However, given that Panx1's role may vary during different phases of sepsis, more investigations are required before interventions against Panx1 can be applied in clinical. Overall, Panx1 may be a promising target for sepsis-induced MODS. Nevertheless, further research is needed to understand its complex role in different stages of sepsis fully and to develop suitable pharmaceutical interventions for clinical use.
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Affiliation(s)
| | | | | | - Yun Long
- Department of Critical Care Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Huaiwu He
- Department of Critical Care Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
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Zhao Y, Li Z, Chen Y, Li Y, Lu J. Suppression of P2X7R by Local Treatment Alleviates Acute Gouty Inflammation. J Inflamm Res 2023; 16:3581-3591. [PMID: 37636273 PMCID: PMC10460186 DOI: 10.2147/jir.s421548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 08/04/2023] [Indexed: 08/29/2023] Open
Abstract
Objective Gout is the most common inflammatory arthritis associated with interleukin-1β (IL-1β) accumulation during exacerbation. In this study, we aimed to clarify whether potassium channel antagonists attenuate local inflammation in mice with monosodium urate (MSU)-induced gout. Methods We cultured human macrophage THP-1 cells and evaluated the molecular levels of both IL-1β and potassium channels stimulated with MSU and/or potassium channel antagonists. Acute gout models were generated in IL-1β luciferase transgenic male mice using synovium-like subcutaneous air pouches with MSU injection. Their luciferase activities were monitored following potassium channel blocker treatment using the IVIS Spectrum CT imaging system. The lavages and tissues were extracted from their air pouches, followed by cell counting and pathological analysis. Results MSU stimulation increased the gene expression levels of pro-IL-1β, P2x7r and Kv1.3, whereas the expression of Kcnq1 was decreased in phorbol 12-myristate 13-acetate-induced THP-1 cells. Both high and low concentrations of the P2x7 receptor inhibitor adenosine 5'-triphosphate (ATP) derivative periodate oxidized ATP (oATP) decreased the production of IL-1β in the supernatant of THP-1 cells. The sixth hour was the peak time of IL-1β luciferase activity after MSU intervention in vivo. oATP ameliorated the synovial IL-1β luciferase activity, reduced inflammatory cell infiltration and alleviated the erosive damage in the cartilage. Conclusion The anti-inflammatory properties of potassium channel inhibitors, especially of oATP, might point to new strategies for local anti-inflammatory therapy for acute gout.
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Affiliation(s)
- Yang Zhao
- Department of Orthodontics, the Affiliated Hospital of Qingdao University, Qingdao, People’s Republic of China
- Medical Research Center, the Affiliated Hospital of Qingdao University, Qingdao, People’s Republic of China
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, People’s Republic of China
| | - Zhiyuan Li
- Medical Research Center, the Affiliated Hospital of Qingdao University, Qingdao, People’s Republic of China
| | - Ying Chen
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, People’s Republic of China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, the Affiliated Hospital of Qingdao University, Qingdao, People’s Republic of China
- Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Qingdao, People’s Republic of China
| | - Yushuang Li
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, People’s Republic of China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, the Affiliated Hospital of Qingdao University, Qingdao, People’s Republic of China
- Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Qingdao, People’s Republic of China
| | - Jie Lu
- Medical Research Center, the Affiliated Hospital of Qingdao University, Qingdao, People’s Republic of China
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, People’s Republic of China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, the Affiliated Hospital of Qingdao University, Qingdao, People’s Republic of China
- Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Qingdao, People’s Republic of China
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Stoess C, Leszczynska A, Kui L, Feldstein AE. Pyroptosis and gasdermins-Emerging insights and therapeutic opportunities in metabolic dysfunction-associated steatohepatitis. Front Cell Dev Biol 2023; 11:1218807. [PMID: 37664463 PMCID: PMC10470644 DOI: 10.3389/fcell.2023.1218807] [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: 05/08/2023] [Accepted: 07/24/2023] [Indexed: 09/05/2023] Open
Abstract
In recent years, there has been a rapid expansion in our understanding of regulated cell death, leading to the discovery of novel mechanisms that govern diverse cell death pathways. One recently discovered type of cell death is pyroptosis, initially identified in the 1990s as a caspase-1-dependent lytic cell death. However, further investigations have redefined pyroptosis as a regulated cell death that relies on the activation of pore-forming proteins, particularly the gasdermin family. Among the key regulators of pyroptosis is the inflammasome sensor NOD-like receptor 3 (NLRP3), a critical innate immune sensor responsible for regulating the activation of caspase-1 and gasdermin D. A deeper understanding of pyroptosis and its interplay with other forms of regulated cell death is emerging, shedding light on a complex regulatory network controlling pore-forming proteins and cell fate. Cell death processes play a central role in diseases such as metabolic dysfunction-associated steatotic liver disease, metabolic dysfunction-associated steatohepatitis, autoinflammatory disorders, and cancer. Cell death often acts as a starting point in these diseases, making it an appealing target for drug development. Yet, the complete molecular mechanisms are not fully understood, and new discoveries reveal promising novel avenues for therapeutic interventions. In this review, we summarize recent evidence on pathways and proteins controlling pyroptosis and gasdermins. Furthermore, we will address the role of pyroptosis and the gasdermin family in metabolic dysfunction-associated steatotic liver disease and steatohepatitis. Additionally, we highlight new potential therapeutic targets for treating metabolic dysfunction-associated steatohepatitis and other inflammatory-associated diseases.
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Affiliation(s)
- Christian Stoess
- Department of Pediatric Gastroenterology, University of California, San Diego, San Diego, CA, United States
- Department of Surgery, TUM School of Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Aleksandra Leszczynska
- Department of Pediatric Gastroenterology, University of California, San Diego, San Diego, CA, United States
| | - Lin Kui
- Department of Pediatric Gastroenterology, University of California, San Diego, San Diego, CA, United States
| | - Ariel E. Feldstein
- Department of Pediatric Gastroenterology, University of California, San Diego, San Diego, CA, United States
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Martín-Sánchez F, Compan V, Peñín-Franch A, Tapia-Abellán A, Gómez AI, Baños-Gregori MC, Schmidt FI, Pelegrin P. ASC oligomer favors caspase-1CARD domain recruitment after intracellular potassium efflux. J Cell Biol 2023; 222:e202003053. [PMID: 37402211 DOI: 10.1083/jcb.202003053] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 02/21/2023] [Accepted: 04/28/2023] [Indexed: 07/06/2023] Open
Abstract
Signaling through the inflammasome is important for the inflammatory response. Low concentrations of intracellular K+ are associated with the specific oligomerization and activation of the NLRP3 inflammasome, a type of inflammasome involved in sterile inflammation. After NLRP3 oligomerization, ASC protein binds and forms oligomeric filaments that culminate in large protein complexes named ASC specks. ASC specks are also initiated from different inflammasome scaffolds, such as AIM2, NLRC4, or Pyrin. ASC oligomers recruit caspase-1 and then induce its activation through interactions between their respective caspase activation and recruitment domains (CARD). So far, ASC oligomerization and caspase-1 activation are K+-independent processes. Here, we found that when there is low intracellular K+, ASC oligomers change their structure independently of NLRP3 and make the ASCCARD domain more accessible for the recruitment of the pro-caspase-1CARD domain. Therefore, conditions that decrease intracellular K+ not only drive NLRP3 responses but also enhance the recruitment of the pro-caspase-1 CARD domain into the ASC specks.
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Affiliation(s)
- Fátima Martín-Sánchez
- Molecular Inflammation Group, Biomedical Research Institute of Murcia (IMIB) , Murcia, Spain
| | - Vincent Compan
- IGF, Univ. Montpellier, CNRS, INSERM , Montpellier, France
- Laboratory of Excellence in Ion Channel Science and Therapeutics (Labex ICST) , Villeneuve d'Ascq, France
| | - Alejandro Peñín-Franch
- Molecular Inflammation Group, Biomedical Research Institute of Murcia (IMIB) , Murcia, Spain
| | - Ana Tapia-Abellán
- Molecular Inflammation Group, Biomedical Research Institute of Murcia (IMIB) , Murcia, Spain
| | - Ana I Gómez
- Molecular Inflammation Group, Biomedical Research Institute of Murcia (IMIB) , Murcia, Spain
| | - María C Baños-Gregori
- Molecular Inflammation Group, Biomedical Research Institute of Murcia (IMIB) , Murcia, Spain
| | - Florian I Schmidt
- Institute of Innate Immunity, Medical Faculty, University of Bonn , Bonn, Germany
| | - Pablo Pelegrin
- Molecular Inflammation Group, Biomedical Research Institute of Murcia (IMIB) , Murcia, Spain
- Department of Biochemistry and Molecular Biology B and Immunology, Faculty of Medicine, University of Murcia, Murcia, Spain
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Ma Y, Wang Z, Wu X, Ma Z, Shi J, He S, Li S, Li X, Li X, Li Y, Yu J. 5-Methoxytryptophan ameliorates endotoxin-induced acute lung injury in vivo and in vitro by inhibiting NLRP3 inflammasome-mediated pyroptosis through the Nrf2/HO-1 signaling pathway. Inflamm Res 2023; 72:1633-1647. [PMID: 37458783 DOI: 10.1007/s00011-023-01769-1] [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: 02/25/2023] [Revised: 06/15/2023] [Accepted: 07/05/2023] [Indexed: 09/14/2023] Open
Abstract
BACKGROUND AND AIM Endotoxin-induced acute lung injury (ALI) is a complicated and fatal condition with no specific or efficient clinical treatments. 5-Methoxytryptophan (5-MTP), an endogenous metabolite of tryptophan, was revealed to block systemic inflammation. However, the specific mechanism by which 5-MTP affects ALI still needs to be clarified. The purpose of this study was to determine whether 5-MTP protected the lung by inhibiting NLRP3 inflammasome-mediated pyroptosis through the Nrf2/HO-1 signaling pathway. METHODS AND RESULTS We used lipopolysaccharide (LPS)-stimulated C57BL/6 J mice and MH-S alveolar macrophages to create models of ALI, and 5-MTP (100 mg/kg) administration attenuated pathological lung damage in LPS-exposed mice, which was associated with decreased inflammatory cytokines and oxidative stress levels, upregulated protein expression of Nrf2 and HO-1, and suppressed Caspase-1 activation and NLRP3-mediated pyroptosis protein levels. Moreover, Nrf2-deficient mice or MH-S cells were treated with 5-MTP to further confirm the protective effect of the Nrf2/HO-1 pathway on lung damage. We found that Nrf2 deficiency partially eliminated the beneficial effect of 5-MTP on reducing oxidative stress levels and inflammatory responses and abrogating the inhibition of NLRP3-mediated pyroptosis induced by LPS. CONCLUSION These findings suggested that 5-MTP could effectively ameliorate ALI by inhibiting NLRP3-mediated pyroptosis via the Nrf2/HO-1 signaling pathway.
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Affiliation(s)
- Yang Ma
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
- Department of Anesthesiology, Affiliated Hospital of Chengde Medical University, Chengde, Hebei, China
| | - Zhixue Wang
- Department of Anesthesiology, Affiliated Hospital of Chengde Medical University, Chengde, Hebei, China
| | - Xiaoyang Wu
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
| | - Zijian Ma
- Department of Anesthesiology, Affiliated Hospital of Chengde Medical University, Chengde, Hebei, China
| | - Jia Shi
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
| | - Simeng He
- Department of Anesthesiology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Shaona Li
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
| | - Xiangyun Li
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
| | - Xiangkun Li
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
| | - Yan Li
- Department of Anesthesiology, Affiliated Hospital of Chengde Medical University, Chengde, Hebei, China
| | - Jianbo Yu
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China.
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Lang H, Noble KV, Barth JL, Rumschlag JA, Jenkins TR, Storm SL, Eckert MA, Dubno JR, Schulte BA. The Stria Vascularis in Mice and Humans Is an Early Site of Age-Related Cochlear Degeneration, Macrophage Dysfunction, and Inflammation. J Neurosci 2023; 43:5057-5075. [PMID: 37268417 PMCID: PMC10324995 DOI: 10.1523/jneurosci.2234-22.2023] [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: 12/05/2022] [Revised: 04/19/2023] [Accepted: 05/25/2023] [Indexed: 06/04/2023] Open
Abstract
Age-related hearing loss, or presbyacusis, is a common degenerative disorder affecting communication and quality of life for millions of older adults. Multiple pathophysiologic manifestations, along with many cellular and molecular alterations, have been linked to presbyacusis; however, the initial events and causal factors have not been clearly established. Comparisons of the transcriptome in the lateral wall (LW) with other cochlear regions in a mouse model (of both sexes) of "normal" age-related hearing loss revealed that early pathophysiological alterations in the stria vascularis (SV) are associated with increased macrophage activation and a molecular signature indicative of inflammaging, a common form of immune dysfunction. Structure-function correlation analyses in mice across the lifespan showed that the age-dependent increase in macrophage activation in the stria vascularis is associated with a decline in auditory sensitivity. High-resolution imaging analysis of macrophage activation in middle-aged and aged mouse and human cochleas, along with transcriptomic analysis of age-dependent changes in mouse cochlear macrophage gene expression, support the hypothesis that aberrant macrophage activity is an important contributor to age-dependent strial dysfunction, cochlear pathology, and hearing loss. Thus, this study highlights the SV as a primary site of age-related cochlear degeneration and aberrant macrophage activity and dysregulation of the immune system as early indicators of age-related cochlear pathology and hearing loss. Importantly, novel new imaging methods described here now provide a means to analyze human temporal bones in a way that had not previously been feasible and thereby represent a significant new tool for otopathological evaluation.SIGNIFICANCE STATEMENT Age-related hearing loss is a common neurodegenerative disorder affecting communication and quality of life. Current interventions (primarily hearing aids and cochlear implants) offer imperfect and often unsuccessful therapeutic outcomes. Identification of early pathology and causal factors is crucial for the development of new treatments and early diagnostic tests. Here, we find that the SV, a nonsensory component of the cochlea, is an early site of structural and functional pathology in mice and humans that is characterized by aberrant immune cell activity. We also establish a new technique for evaluating cochleas from human temporal bones, an important but understudied area of research because of a lack of well-preserved human specimens and difficult tissue preparation and processing approaches.
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Affiliation(s)
- Hainan Lang
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, South Carolina 29425
| | - Kenyaria V Noble
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, South Carolina 29425
| | - Jeremy L Barth
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, South Carolina 29425
| | - Jeffrey A Rumschlag
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, South Carolina 29425
| | - Tyreek R Jenkins
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, South Carolina 29425
| | - Shelby L Storm
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, South Carolina 29425
| | - Mark A Eckert
- Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, Charleston, South Carolina 29425
| | - Judy R Dubno
- Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, Charleston, South Carolina 29425
| | - Bradley A Schulte
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, South Carolina 29425
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Chen Y, Ye X, Escames G, Lei W, Zhang X, Li M, Jing T, Yao Y, Qiu Z, Wang Z, Acuña-Castroviejo D, Yang Y. The NLRP3 inflammasome: contributions to inflammation-related diseases. Cell Mol Biol Lett 2023; 28:51. [PMID: 37370025 DOI: 10.1186/s11658-023-00462-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 05/25/2023] [Indexed: 06/29/2023] Open
Abstract
The NOD-like receptor protein 3 (NLRP3) inflammasome is a protein complex that regulates innate immune responses by activating caspase-1 and the inflammatory cytokines interleukin (IL)-1β and IL-18. Multiple studies have demonstrated the importance of the NLRP3 inflammasome in the development of immune and inflammation-related diseases, including arthritis, Alzheimer's disease, inflammatory bowel disease, and other autoimmune and autoinflammatory diseases. This review first explains the activation and regulatory mechanism of the NLRP3 inflammasome. Secondly, we focus on the role of the NLRP3 inflammasome in various inflammation-related diseases. Finally, we look forward to new methods for targeting the NLRP3 inflammasome to treat inflammation-related diseases, and provide new ideas for clinical treatment.
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Affiliation(s)
- Ying Chen
- Department of Hematology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Xingyan Ye
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Faculty of Life Sciences and Medicine, Northwest University, Xi'an, China
- Department of Neurology, Xi'an No. 3 Hospital, The Affiliated Hospital of Northwest University, Xi'an, China
| | - Germaine Escames
- Biomedical Research Center, Health Sciences Technology Park, University of Granada, Avda. del Conocimiento s/n, Granada, Spain
- Ibs. Granada and CIBERfes, Granada, Spain
- UGC of Clinical Laboratories, University San Cecilio's Hospital, Granada, Spain
| | - Wangrui Lei
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Faculty of Life Sciences and Medicine, Northwest University, Xi'an, China
- Department of Neurology, Xi'an No. 3 Hospital, The Affiliated Hospital of Northwest University, Xi'an, China
| | - Xin Zhang
- Department of Cardiology, Affiliated Hospital, Yan'an University, Yan'an, China
| | - Meng Li
- Department of Cardiology, Affiliated Hospital, Yan'an University, Yan'an, China
| | - Tong Jing
- Department of Cardiology, Affiliated Hospital, Yan'an University, Yan'an, China
| | - Yu Yao
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Faculty of Life Sciences and Medicine, Northwest University, Xi'an, China
- Department of Neurology, Xi'an No. 3 Hospital, The Affiliated Hospital of Northwest University, Xi'an, China
| | - Zhenye Qiu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Faculty of Life Sciences and Medicine, Northwest University, Xi'an, China
- Department of Neurology, Xi'an No. 3 Hospital, The Affiliated Hospital of Northwest University, Xi'an, China
| | - Zheng Wang
- Department of Cardiothoracic Surgery, Central Theater Command General Hospital of Chinese People's Liberation Army, Wuhan, China
| | - Darío Acuña-Castroviejo
- Biomedical Research Center, Health Sciences Technology Park, University of Granada, Avda. del Conocimiento s/n, Granada, Spain.
- Ibs. Granada and CIBERfes, Granada, Spain.
- UGC of Clinical Laboratories, University San Cecilio's Hospital, Granada, Spain.
| | - Yang Yang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Faculty of Life Sciences and Medicine, Northwest University, Xi'an, China.
- Department of Neurology, Xi'an No. 3 Hospital, The Affiliated Hospital of Northwest University, Xi'an, China.
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Janho Dit Hreich S, Hofman P, Vouret-Craviari V. The Role of IL-18 in P2RX7-Mediated Antitumor Immunity. Int J Mol Sci 2023; 24:ijms24119235. [PMID: 37298187 DOI: 10.3390/ijms24119235] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 05/22/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023] Open
Abstract
Cancer is the leading cause of death worldwide despite the variety of treatments that are currently used. This is due to an innate or acquired resistance to therapy that encourages the discovery of novel therapeutic strategies to overcome the resistance. This review will focus on the role of the purinergic receptor P2RX7 in the control of tumor growth, through its ability to modulate antitumor immunity by releasing IL-18. In particular, we describe how the ATP-induced receptor activities (cationic exchange, large pore opening and NLRP3 inflammasome activation) modulate immune cell functions. Furthermore, we recapitulate our current knowledge of the production of IL-18 downstream of P2RX7 activation and how IL-18 controls the fate of tumor growth. Finally, the potential of targeting the P2RX7/IL-18 pathway in combination with classical immunotherapies to fight cancer is discussed.
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Affiliation(s)
- Serena Janho Dit Hreich
- Faculty of Medicine, Université Côte d'Azur, CNRS, INSERM, IRCAN, 06108 Nice, France
- IHU RespirEREA, Université Côte d'Azur, 06108 Nice, France
- FHU OncoAge, 06108 Nice, France
| | - Paul Hofman
- IHU RespirEREA, Université Côte d'Azur, 06108 Nice, France
- Laboratory of Clinical and Experimental Pathology and Biobank, Pasteur Hospital, 06108 Nice, France
- Hospital-Related Biobank, Pasteur Hospital, 06108 Nice, France
| | - Valérie Vouret-Craviari
- Faculty of Medicine, Université Côte d'Azur, CNRS, INSERM, IRCAN, 06108 Nice, France
- IHU RespirEREA, Université Côte d'Azur, 06108 Nice, France
- FHU OncoAge, 06108 Nice, France
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Zeng J, Liu J, Huang JH, Fu SP, Wang XY, Xi C, Cui YR, Qu F. Aloperine alleviates lipopolysaccharide-induced acute lung injury by inhibiting NLRP3 inflammasome activation. Int Immunopharmacol 2023; 120:110142. [PMID: 37210910 DOI: 10.1016/j.intimp.2023.110142] [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: 01/19/2023] [Revised: 03/31/2023] [Accepted: 03/31/2023] [Indexed: 05/23/2023]
Abstract
RATIONALE Excessive activation of the NLRP3 inflammasome is involved in the pathological progression of acute lung injury (ALI). Aloperine (Alo) has anti-inflammatory effects in many inflammatory disease models; however, its role in ALI remains elusive. In this study, we addressed the role of Alo in NLRP3 inflammasome activation in both ALI mice and LPS-treated RAW264.7 cells. METHODS The activation of the NLRP3 inflammasome in LPS-induced ALI lungs was investigated in C57BL/6 mice. Alo was administered in order to study its effect on NLRP3 inflammasome activation in ALI. RAW264.7 cells were used to evaluate the underlying mechanism of Alo in the activation of the NLRP3 inflammasome in vitro. RESULTS The activation of the NLRP3 inflammasome occurs in the lungs and RAW264.7 cells under LPS stress. Alo attenuated the pathological injury of lung tissue as well as downregulates the mRNA expression of NLRP3 and pro-caspase-1 in ALI mice and LPS-stressed RAW264.7 cells. The expression of NLRP3, pro-caspase-1, and caspase-1 p10 were also significantly suppressed by Alo in vivo and in vitro. Furthermore, Alo decreased IL-1β and IL-18 release in ALI mice and LPS-induced RAW264.7 cells. In addition, ML385, a Nrf2 inhibitor, weakened the activity of Alo, which inhibited the activation of the NLRP3 inflammasome in vitro. CONCLUSION Alo reduces NLRP3 inflammasome activation via the Nrf2 pathway in ALI mice.
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Affiliation(s)
- Jie Zeng
- Department of Physiology, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi 330004, China; Jiangxi Medical College, Shangrao, Jiangxi 334000, China
| | - Jie Liu
- Department of Physiology, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi 330004, China
| | - Jun-Hao Huang
- Department of Pharmacology, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi 330004, China
| | | | - Xin-Yi Wang
- Department of Physiology, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi 330004, China
| | - Chao Xi
- Department of Pharmacology, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi 330004, China
| | - Yan-Ru Cui
- Department of Physiology, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi 330004, China; Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, Hunan 410078, China.
| | - Fei Qu
- Department of Pharmacology, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi 330004, China.
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Liu Y, Lei YX, Li JW, Ma YZ, Wang XY, Meng FH, Wu YJ, Wang N, Liang J, Zhao CQ, Yang Y, Chen GX, Yu SX. G Protein-Coupled Receptor 120 Mediates Host Defense against Clostridium perfringens Infection through Regulating NOD-like Receptor Family Pyrin Domain-Containing 3 Inflammasome Activation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:7119-7130. [PMID: 37115810 DOI: 10.1021/acs.jafc.3c01242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Clostridium perfringens is a major cause of infectious foodborne disease, frequently associated with the consumption of raw and undercooked food. Despite intensive studies on clarifying C. perfringens pathogenesis, the molecular mechanisms of host-pathogen interactions remain poorly understood. In soft tissue and mucosal infection models, Gpr120-/- mice, G protein-coupled receptor 120 (GPR120), are more susceptible to C. perfringens infection. Gpr120 deficiency leads to a low survival rate (30 and 10%, p < 0.01), more bacterial loads in the muscle (2.26 × 108 ± 2.08 × 108 CFUs/g, p < 0.01), duodenum (2.80 × 107 ± 1.61 × 107 CFUs/g, p < 0.01), cecum (2.50 × 108 ± 2.05 × 108 CFUs/g, p < 0.01), and MLN (1.23 × 106 ± 8.06 × 105 CFUs/g, p < 0.01), less IL-18 production in the muscle (8.54 × 103 ± 1.20 × 103 pg/g, p < 0.01), duodenum (3.34 × 103 ± 2.46 × 102 pg/g, p < 0.01), and cecum (3.81 × 103 ± 5.29 × 102 pg/g, p < 0.01), and severe organ injury. Obviously, GPR120 facilitates IL-18 production and pathogen control via potassium efflux-dependent NOD-like receptor family pyrin domain-containing 3 (NLRP3) signaling. Mechanistically, GPR120 interaction with NLRP3 potentiates the NLRP3 inflammasome assembly. Thus, this study uncovers a novel role of GPR120 in host protection and reveals that GPR120 may be a potential therapeutic target for limiting pathogen infection.
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Affiliation(s)
- Yang Liu
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
- Animal Husbandry Institute, Agriculture and Animal Husbandry Academy of Inner Mongolia, Hohhot 010031, China
| | - Yu-Xin Lei
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Jian-Wei Li
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Yu-Ze Ma
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Xue-Yin Wang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Fan-Hua Meng
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Yu-Jing Wu
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Na Wang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Jing Liang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Cai-Quan Zhao
- College of Biological Science and Technology, Bao Tou Teachers' College, Baotou 014030, China
| | - Yang Yang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Guang-Xin Chen
- Institutes of Biomedical Sciences, the Key Laboratory of Medical Molecular Cell Biology of Shanxi Province, Shanxi University, Taiyuan 030006, China
| | - Shui-Xing Yu
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China
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Huang LS, Anas M, Xu J, Zhou B, Toth PT, Krishnan Y, Di A, Malik AB. Endosomal trafficking of two-pore K + efflux channel TWIK2 to plasmalemma mediates NLRP3 inflammasome activation and inflammatory injury. eLife 2023; 12:e83842. [PMID: 37158595 PMCID: PMC10202452 DOI: 10.7554/elife.83842] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 05/07/2023] [Indexed: 05/10/2023] Open
Abstract
Potassium efflux via the two-pore K+ channel TWIK2 is a requisite step for the activation of NLRP3 inflammasome, however, it remains unclear how K+ efflux is activated in response to select cues. Here, we report that during homeostasis, TWIK2 resides in endosomal compartments. TWIK2 is transported by endosomal fusion to the plasmalemma in response to increased extracellular ATP resulting in the extrusion of K+. We showed that ATP-induced endosomal TWIK2 plasmalemma translocation is regulated by Rab11a. Deleting Rab11a or ATP-ligated purinergic receptor P2X7 each prevented endosomal fusion with the plasmalemma and K+ efflux as well as NLRP3 inflammasome activation in macrophages. Adoptive transfer of Rab11a-depleted macrophages into mouse lungs prevented NLRP3 inflammasome activation and inflammatory lung injury. We conclude that Rab11a-mediated endosomal trafficking in macrophages thus regulates TWIK2 localization and activity at the cell surface and the downstream activation of the NLRP3 inflammasome. Results show that endosomal trafficking of TWIK2 to the plasmalemma is a potential therapeutic target in acute or chronic inflammatory states.
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Affiliation(s)
- Long Shuang Huang
- Department of Pharmacology and Regenerative Medicine, The University of Illinois College of MedicineChicagoUnited States
- Shanghai Frontiers Science Center of Drug Target Identification and Delivery, School of Pharmacy, Shanghai Jiao Tong UniversityShanghaiChina
| | - Mohammad Anas
- Department of Pharmacology and Regenerative Medicine, The University of Illinois College of MedicineChicagoUnited States
| | - Jingsong Xu
- Department of Pharmacology and Regenerative Medicine, The University of Illinois College of MedicineChicagoUnited States
| | - Bisheng Zhou
- Department of Pharmacology and Regenerative Medicine, The University of Illinois College of MedicineChicagoUnited States
| | - Peter T Toth
- Fluorescence Imaging Core, The University of Illinois College of MedicineChicagoUnited States
| | - Yamuna Krishnan
- Department of Chemistry, University of ChicagoChicagoUnited States
| | - Anke Di
- Department of Pharmacology and Regenerative Medicine, The University of Illinois College of MedicineChicagoUnited States
| | - Asrar B Malik
- Department of Pharmacology and Regenerative Medicine, The University of Illinois College of MedicineChicagoUnited States
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Meng Z, Gao M, Wang C, Guan S, Zhang D, Lu J. Apigenin Alleviated High-Fat-Diet-Induced Hepatic Pyroptosis by Mitophagy-ROS-CTSB-NLRP3 Pathway in Mice and AML12 Cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:7032-7045. [PMID: 37141464 DOI: 10.1021/acs.jafc.2c07581] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Apigenin is considered the most-known natural flavonoid and is abundant in a wide variety of fruits and vegetables. A high fat diet (HFD) can induce liver injury and hepatocyte death in multiple ways. Pyroptosis is an innovative type of programmed cell death. Moreover, excessive pyroptosis of hepatocytes leads to liver injury. We used HFD to induce liver cell pyroptosis in C57BL/6J mice in this work. After gavage of apigenin, apigenin can significantly reduce the level of lactate dehydrogenase (LDH) in liver tissue ignited by HFD and reduce the levels of NLRP3 (NOD-like receptor family pyrin domain containing 3), the N-terminal domain of GSDMD (GSDMD-N), cleaved-caspase 1, cathepsin B (CTSB), interleukin-1β (IL-1β) and interleukin-18 (IL-18) protein expression and the colocalization of NLRP3 and CTSB and increase the level of lysosomal associated membrane protein-1 (LAMP-1) protein expression, thus alleviating cell pyroptosis. In a further in vitro mechanism study, we find that palmitic acid (PA) can induce pyroptosis in AML12 cells. After adding apigenin, apigenin can clear the damaged mitochondria through mitophagy and reduce the generation of intracellular reactive oxygen species (ROS), thus alleviating CTSB release caused by lysosomal membrane permeabilization (LMP), reducing the LDH release caused by PA and reducing the levels of NLRP3, GSDMD-N, cleaved-caspase 1, CTSB, IL-1β, and IL-18 protein expression. By adding the mitophagy inhibitor cyclosporin A (CsA), LC3-siRNA, the CTSB inhibitor CA-074 methyl ester (CA-074 Me), and the NLRP3 inhibitor MCC950, the aforementioned results were further confirmed. Therefore, our results show that HFD-fed and PA can damage mitochondria, promote the production of intracellular ROS, enhance the lysosomal membrane permeabilization (LMP), and cause the leakage of CTSB, thus activating the NLRP3 inflammatory body and inducing pyroptosis in C57BL/6J mice and AML12 cells, while apigenin alleviates this phenomenon through the mitophagy-ROS-CTSB-NLRP3 pathway.
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Affiliation(s)
- Zhuoqun Meng
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun, Jilin 130062, People's Republic of China
| | - Min Gao
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun, Jilin 130062, People's Republic of China
| | - Chunyun Wang
- Department of Pharmacology, College of Basic Medical Sciences, Jilin University, Changchun, Jilin 130062, People's Republic of China
| | - Shuang Guan
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun, Jilin 130062, People's Republic of China
| | - DuoDuo Zhang
- Department of Thoracic Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, People's Republic of China
| | - Jing Lu
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun, Jilin 130062, People's Republic of China
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He W, Hu Z, Zhong Y, Wu C, Li J. The Potential of NLRP3 Inflammasome as a Therapeutic Target in Neurological Diseases. Mol Neurobiol 2023; 60:2520-2538. [PMID: 36680735 DOI: 10.1007/s12035-023-03229-7] [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: 04/27/2022] [Accepted: 01/10/2023] [Indexed: 01/22/2023]
Abstract
NLRP3 (NLRP3: NOD-, LRR-, and pyrin domain-containing protein 3) inflammasome is the best-described inflammasome that plays a crucial role in the innate immune system and a wide range of diseases. The intimate association of NLRP3 with neurological disorders, including neurodegenerative diseases and strokes, further emphasizes its prominence as a clinical target for pharmacological intervention. However, after decades of exploration, the mechanism of NLRP3 activation remains indefinite. This review highlights recent advances and gaps in our insights into the regulation of NLRP3 inflammasome. Furthermore, we present several emerging pharmacological approaches of clinical translational potential targeting the NLRP3 inflammasome in neurological diseases. More importantly, despite small-molecule inhibitors of the NLRP3 inflammasome, we have focused explicitly on Chinese herbal medicine and botanical ingredients, which may be splendid therapeutics by inhibiting NLRP3 inflammasome for central nervous system disorders. We expect that we can contribute new perspectives to the treatment of neurological diseases.
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Affiliation(s)
- Wenfang He
- Department of Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Zhiping Hu
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yanjun Zhong
- Department of Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Chenfang Wu
- Department of Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Jinxiu Li
- Department of Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China.
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Kanmani P, Elkafas HEH, Ghazal M, Minshall RD, Hu G. p120-Catenin suppresses NLRP3 inflammasome activation in macrophages. Am J Physiol Lung Cell Mol Physiol 2023; 324:L596-L608. [PMID: 36880663 PMCID: PMC10085560 DOI: 10.1152/ajplung.00328.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 01/31/2023] [Accepted: 02/28/2023] [Indexed: 03/08/2023] Open
Abstract
Inflammasome activation is of central importance for the process of generation of overwhelming inflammatory response and the pathogenesis of sepsis. The intrinsic molecular mechanism for controlling inflammasome activation is still poorly understood. Here we investigated the role of p120-catenin expression in macrophages in regulating nucleotide-binding oligomerization domain (NOD) and leucine-rich repeat (LRR)- and pyrin domain-containing proteins 3 (NLRP3) inflammasome activation. Depletion of p120-catenin in murine bone marrow-derived macrophages enhanced caspase-1 activation and secretion of active interleukin (IL)-1β in response to ATP stimulation following LPS priming. Coimmunoprecipitation analysis showed that p120-catenin deletion promoted NLRP3 inflammasome activation by accelerating the assembly of the inflammasome complex comprised of NLRP3, apoptosis-associated speck-like protein containing a caspase recruitment domain (ASC), and pro-caspase-1. Depletion of p120-catenin also increased the production of mitochondrial reactive oxygen species. Pharmacological inhibition of mitochondrial reactive oxygen species nearly completely abolished NLRP3 inflammasome activation, caspase-1 activation, and the production of IL-1β in p120-catenin-depleted macrophages. Furthermore, p120-catenin ablation significantly disrupted mitochondrial function, evidenced by decreased mitochondrial membrane potential and lower production of intracellular ATP. In alveolar macrophage-depleted mice challenged with cecal ligation and puncture, pulmonary transplantation of p120-catenin-deficient macrophages dramatically enhanced the accumulation of IL-1β and IL-18 in bronchoalveolar lavage fluid. These results demonstrate that p120-catenin prevents NLRP3 inflammasome activation in macrophages by maintaining mitochondrial homeostasis and reducing the production of mitochondrial reactive oxygen species in response to endotoxin insult. Thus, inhibition of NLRP3 inflammasome activation by stabilization of p120-catenin expression in macrophages may be a novel strategy to prevent an uncontrolled inflammatory response in sepsis.
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Affiliation(s)
- Paulraj Kanmani
- Department of Anesthesiology, University of Illinois College of Medicine, Chicago, Illinois, United States
| | - Hoda El-Hossiny Elkafas
- Department of Anesthesiology, University of Illinois College of Medicine, Chicago, Illinois, United States
| | - Muhammed Ghazal
- Department of Anesthesiology, University of Illinois College of Medicine, Chicago, Illinois, United States
| | - Richard D Minshall
- Department of Anesthesiology, University of Illinois College of Medicine, Chicago, Illinois, United States
- Department of Pharmacology and Regenerative Medicine, University of Illinois College of Medicine, Chicago, Illinois, United States
| | - Guochang Hu
- Department of Anesthesiology, University of Illinois College of Medicine, Chicago, Illinois, United States
- Department of Pharmacology and Regenerative Medicine, University of Illinois College of Medicine, Chicago, Illinois, United States
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69
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Chen C, Smith MT. The NLRP3 inflammasome: role in the pathobiology of chronic pain. Inflammopharmacology 2023:10.1007/s10787-023-01235-8. [PMID: 37106238 DOI: 10.1007/s10787-023-01235-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 04/01/2023] [Indexed: 04/29/2023]
Abstract
Chronic pain is not only one of the most common health problems, it is often challenging to treat adequately. Chronic pain has a high prevalence globally, affecting approximately 20% of the adult population. Chronic inflammatory pain and neuropathic (nerve) pain conditions are areas of large unmet medical need because analgesic/adjuvant agents recommended for alleviation of these types of chronic pain often lack efficacy and/or they produce dose-limiting side effects. Recent work has implicated the NLRP3 (NOD-, LRR- and pyrin domain-containing protein 3) inflammasome in the pathobiology of chronic pain, especially neuropathic and inflammatory pain conditions. NLRP3 is activated by damage-associated molecular patterns (DAMPs) and pathogen-associated molecular patterns (PAMPs). This in turn leads to recruitment and activation of caspase-1 an enzyme that cleaves the inactive IL-1β and IL-18 precursors to their respective mature pro-inflammatory cytokines (IL-1β and IL-18) for release into the cellular milieu. Caspase-1 also cleaves the pyroptosis-inducing factor, gasdermin D, that leads to oligomerization of its N-terminal fragment to form pores in the host cell membrane. This then results in cellular swelling, lysis and release of cytoplasmic contents in an inflammatory form of cell death, termed pyroptosis. The ultimate outcome may lead to the development of neuropathic pain and/or chronic inflammatory pain. In this review, we address a role for NLRP3 inflammasome activation in the pathogenesis of various chronic pain conditions.
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Affiliation(s)
- Chen Chen
- Faculty of Science, School of Chemistry and Molecular Biosciences and School of Biomedical Sciences, Faculty of Medicine, St Lucia Campus, The University of Queensland, Brisbane, Australia
- School of Biomedical Sciences, Faculty of Medicine, St Lucia Campus, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Maree T Smith
- School of Biomedical Sciences, Faculty of Medicine, St Lucia Campus, The University of Queensland, Brisbane, QLD, 4072, Australia.
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70
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Zhang Y, Fu J, Han Y, Feng D, Yue S, Zhou Y, Luo Z. Two-Pore-Domain Potassium Channel TREK-1 Mediates Pulmonary Fibrosis through Macrophage M2 Polarization and by Direct Promotion of Fibroblast Differentiation. Biomedicines 2023; 11:biomedicines11051279. [PMID: 37238950 DOI: 10.3390/biomedicines11051279] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 04/19/2023] [Accepted: 04/23/2023] [Indexed: 05/28/2023] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a devastating disease characterized by myofibroblast proliferation and abnormal accumulation of extracellular matrix in the lungs. After lung injury, M2 macrophages mediate the pathogenesis of pulmonary fibrosis by secreting fibrotic cytokines that promote myofibroblast activation. The TWIK-related potassium channel (TREK-1, also known as KCNK2) is a K2P channel that is highly expressed in cardiac, lung, and other tissues; it worsens various tumors, such as ovarian cancer and prostate cancer, and mediates cardiac fibrosis. However, the role of TREK-1 in lung fibrosis remains unclear. This study aimed to examine the effects of TREK-1 on bleomycin (BLM)-induced lung fibrosis. The results show that TREK-1 knockdown, mediated by the adenovirus or pharmacological inhibition of TREK-1 with fluoxetine, resulted in diminished BLM-induced lung fibrosis. TREK-1 overexpression in macrophages remarkably increased the M2 phenotype, resulting in fibroblast activation. Furthermore, TREK-1 knockdown and fluoxetine administration directly reduced the differentiation of fibroblasts to myofibroblasts by inhibiting the focal adhesion kinase (FAK)/p38 mitogen-activated protein kinases (p38)/Yes-associated protein (YAP) signaling pathway. In conclusion, TREK-1 plays a central role in the pathogenesis of BLM-induced lung fibrosis, which serves as a theoretical basis for the inhibition of TREK-1 as a potential therapy protocol for lung fibrosis.
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Affiliation(s)
- Yunna Zhang
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha 410013, China
| | - Jiafeng Fu
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha 410013, China
| | - Yang Han
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha 410013, China
| | - Dandan Feng
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha 410013, China
| | - Shaojie Yue
- Department of Pediatrics, Xiangya Hospital, Central South University, Changsha 410013, China
| | - Yan Zhou
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha 410013, China
| | - Ziqiang Luo
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha 410013, China
- Hunan Key Laboratory of Organ Fibrosis, Changsha 410013, China
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71
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Zheng X, Wan J, Tan G. The mechanisms of NLRP3 inflammasome/pyroptosis activation and their role in diabetic retinopathy. Front Immunol 2023; 14:1151185. [PMID: 37180116 PMCID: PMC10167027 DOI: 10.3389/fimmu.2023.1151185] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 04/11/2023] [Indexed: 05/15/2023] Open
Abstract
In the working-age population worldwide, diabetic retinopathy (DR), a prevalent complication of diabetes, is the main cause of vision impairment. Chronic low-grade inflammation plays an essential role in DR development. Recently, concerning the pathogenesis of DR, the Nod-Like Receptor Family Pyrin Domain Containing 3 (NLRP3) inflammasome in retinal cells has been determined as a causal factor. In the diabetic eye, the NLRP3 inflammasome is activated by several pathways (such as ROS and ATP). The activation of NPRP3 leads to the secretion of inflammatory cytokines interleukin-1β (IL-1β) and interleukin-18 (IL-18), and leads to pyroptosis, a rapid inflammatory form of lytic programmed cell death (PCD). Cells that undergo pyroptosis swell and rapture, releasing more inflammatory factors and accelerating DR progression. This review focuses on the mechanisms that activate NLRP3 inflammasome and pyroptosis leading to DR. The present research highlighted some inhibitors of NLRP3/pyroptosis pathways and novel therapeutic measures concerning DR treatment.
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Affiliation(s)
- Xiaoqin Zheng
- Department of Ophthalmology, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Jia Wan
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Gang Tan
- Department of Ophthalmology, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan, China
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72
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Łasut-Szyszka B, Rusin M. The Wheel of p53 Helps to Drive the Immune System. Int J Mol Sci 2023; 24:ijms24087645. [PMID: 37108808 PMCID: PMC10143509 DOI: 10.3390/ijms24087645] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 04/18/2023] [Accepted: 04/18/2023] [Indexed: 04/29/2023] Open
Abstract
The p53 tumor suppressor protein is best known as an inhibitor of the cell cycle and an inducer of apoptosis. Unexpectedly, these functions of p53 are not required for its tumor suppressive activity in animal models. High-throughput transcriptomic investigations as well as individual studies have demonstrated that p53 stimulates expression of many genes involved in immunity. Probably to interfere with its immunostimulatory role, many viruses code for proteins that inactivate p53. Judging by the activities of immunity-related p53-regulated genes it can be concluded that p53 is involved in detection of danger signals, inflammasome formation and activation, antigen presentation, activation of natural killer cells and other effectors of immunity, stimulation of interferon production, direct inhibition of virus replication, secretion of extracellular signaling molecules, production of antibacterial proteins, negative feedback loops in immunity-related signaling pathways, and immunologic tolerance. Many of these p53 functions have barely been studied and require further, more detailed investigations. Some of them appear to be cell-type specific. The results of transcriptomic studies have generated many new hypotheses on the mechanisms utilized by p53 to impact on the immune system. In the future, these mechanisms may be harnessed to fight cancer and infectious diseases.
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Affiliation(s)
- Barbara Łasut-Szyszka
- Center for Translational Research and Molecular Biology of Cancer, Maria Skłodowska-Curie National Research Institute of Oncology, Gliwice Branch, 44-101 Gliwice, Poland
| | - Marek Rusin
- Center for Translational Research and Molecular Biology of Cancer, Maria Skłodowska-Curie National Research Institute of Oncology, Gliwice Branch, 44-101 Gliwice, Poland
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73
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Xu J, Núñez G. The NLRP3 inflammasome: activation and regulation. Trends Biochem Sci 2023; 48:331-344. [PMID: 36336552 PMCID: PMC10023278 DOI: 10.1016/j.tibs.2022.10.002] [Citation(s) in RCA: 121] [Impact Index Per Article: 121.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 10/10/2022] [Accepted: 10/10/2022] [Indexed: 11/06/2022]
Abstract
The NOD-, LRR- and pyrin domain-containing protein 3 (NLRP3) inflammasome is a cytoplasmic supramolecular complex that is activated in response to cellular perturbations triggered by infection and sterile injury. Assembly of the NLRP3 inflammasome leads to activation of caspase-1, which induces the maturation and release of interleukin-1β (IL-1β) and IL-18, as well as cleavage of gasdermin D (GSDMD), which promotes a lytic form of cell death. Production of IL-1β via NLRP3 can contribute to the pathogenesis of inflammatory disease, whereas aberrant IL-1β secretion through inherited NLRP3 mutations causes autoinflammatory disorders. In this review, we discuss recent developments in the structure of the NLRP3 inflammasome, and the cellular processes and signaling events controlling its assembly and activation.
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Affiliation(s)
- Jie Xu
- Department of Pathology and Rogel Cancer Center, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Gabriel Núñez
- Department of Pathology and Rogel Cancer Center, University of Michigan Medical School, Ann Arbor, MI, USA.
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74
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Liu Z, Wang C, Lin C. Pyroptosis as a double-edged sword: The pathogenic and therapeutic roles in inflammatory diseases and cancers. Life Sci 2023; 318:121498. [PMID: 36780939 DOI: 10.1016/j.lfs.2023.121498] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 02/06/2023] [Accepted: 02/08/2023] [Indexed: 02/13/2023]
Abstract
Pyroptosis is a programmed cell death mode discovered in recent years. It is caused by inflammasomes and the perforation of Gasdermin family proteins, and results in the release of inflammatory factors and triggering of an inflammatory cascade response. The pathways of pyroptosis include the caspase-1-dependent canonical pathway, the caspase-4/5/11-dependent non-canonical pathway, other caspase-dependent pathways and caspase-independent pathways. Its morphological features are different from other programmed cell death modes (apoptosis, autophagy, etc.). Pyroptosis can be observed microscopically that abundant pores are formed in the cell membrane, resulting in cell swelling and rupture, and eventually leading to the outflow of cellular contents. In addition to causing tissue damage and dysfunction through inflammation, pyroptosis can also become a potential cancer treatment strategy by reducing drug resistance in cancer cells. However, many details are still unclear on the molecular mechanisms of its role in pathogenicity and therapeutics, and therefore lots of work needs to be done. This article reviews the morphological characteristics, pathogenic and therapeutic mechanisms of pyroptosis and its related research progress in inflammatory diseases and cancers. It helps to further understand the mechanism of pyroptosis and provide new ideas for the research and prevention of inflammatory diseases and cancers.
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Affiliation(s)
- Zuohao Liu
- School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Chunming Wang
- School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Changjun Lin
- School of Life Sciences, Lanzhou University, Lanzhou, China.
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75
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Zhai Z, Fu Y, Zhang X, Zhang Y, Zhou C, Huang X, Deng L. Liposomes loaded with quercetin for resolution of lung inflammation in a lipopolysaccharide-induced mouse model of sepsis. Biomed Mater 2023; 18. [PMID: 36863020 DOI: 10.1088/1748-605x/acc0bc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 03/01/2023] [Indexed: 03/04/2023]
Abstract
Quercetin (QU) has been widely used as a dietary supplement and proved useful to treat lung diseases. However, the therapeutic potential of QU may be restricted because of its low bioavailability and poor water solubility. In this study, we investigated the effects of developed QU-loaded liposomes on macrophage-mediated lung inflammation.In vivo, a mouse model of sepsis induced by lipopolysaccharide challenge was used to detect the anti-inflammatory effects of liposomal QU. Hematoxylin/eosin staining and immunostaining were utilized to reveal pathological damage and leukocyte infiltration into the lung tissues. Quantitative reverse transcription-polymerase chain reaction and immunoblotting were used to determine cytokine production in the mouse lungs.In vitro, mouse RAW 264.7 macrophages were treated with free QU and liposomal QU. Cell viability assay and immunostaining were utilized to detect cytotoxicity and distribution of QU in the cells. Thein vivoresults showed that liposomal encapsulation promoted the inhibitory effects of QU on lung inflammation. Liposomal QU decreased mortality in septic mice with no obvious toxicity on vital organs. Mechanistically, the anti-inflammatory effects of liposomal QU were associated with inhibition of nuclear factor-kappa B-dependent cytokine production and inflammasome activation in macrophages. Collectively, the results showed that QU liposomes mitigated lung inflammation in septic mice through inhibition of macrophage inflammatory signaling.
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Affiliation(s)
- Zhiqi Zhai
- Key Laboratory of Respiratory Medical Engineering of Changzhou, Institute of Biomedical Engineering and Health Sciences, School of Medicine and Health Engineering, Changzhou University, Changzhou 213164, People's Republic of China
| | - Yue Fu
- Key Laboratory of Respiratory Medical Engineering of Changzhou, Institute of Biomedical Engineering and Health Sciences, School of Medicine and Health Engineering, Changzhou University, Changzhou 213164, People's Republic of China
| | - Xinyue Zhang
- Key Laboratory of Respiratory Medical Engineering of Changzhou, Institute of Biomedical Engineering and Health Sciences, School of Medicine and Health Engineering, Changzhou University, Changzhou 213164, People's Republic of China
| | - Yi Zhang
- Department of Pharmacy, Danyang People's Hospital, Zhenjiang 212300, People's Republic of China
| | - Chao Zhou
- Key Laboratory of Respiratory Medical Engineering of Changzhou, Institute of Biomedical Engineering and Health Sciences, School of Medicine and Health Engineering, Changzhou University, Changzhou 213164, People's Republic of China
| | - Xiaojia Huang
- Key Laboratory of Respiratory Medical Engineering of Changzhou, Institute of Biomedical Engineering and Health Sciences, School of Medicine and Health Engineering, Changzhou University, Changzhou 213164, People's Republic of China
| | - Linhong Deng
- Key Laboratory of Respiratory Medical Engineering of Changzhou, Institute of Biomedical Engineering and Health Sciences, School of Medicine and Health Engineering, Changzhou University, Changzhou 213164, People's Republic of China
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76
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González-Cofrade L, P Green J, Cuadrado I, Amesty Á, Oramas-Royo S, David Brough, Estévez-Braun A, Hortelano S, de Las Heras B. Phenolic and quinone methide nor-triterpenes as selective NLRP3 inflammasome inhibitors. Bioorg Chem 2023; 132:106362. [PMID: 36657273 DOI: 10.1016/j.bioorg.2023.106362] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 12/30/2022] [Accepted: 01/11/2023] [Indexed: 01/15/2023]
Abstract
Dysregulated inflammasome activity, particularly of the NLRP3 inflammasome, is associated with the development of several inflammatory diseases. The study of molecules directly targeting NLRP3 is an emerging field in the discovery of new therapeutic compounds for the treatment of inflammatory disorders. Friedelane triterpenes are biologically active phytochemicals having a wide range of activities including anti-inflammatory effects. In this work, we evaluated the potential anti-inflammatory activity of phenolic and quinonemethide nor-triterpenes (1-11) isolated from Maytenus retusa and some semisynthetic derivatives (12-16) through inhibition of the NLRP3 inflammasome in macrophages. Among them, we found that triterpenes 6 and 14 were the most potent, showing markedly reduced caspase-1 activity, IL-1β secretion (IC50 = 1.15 µM and 0.19 µM, respectively), and pyroptosis (IC50 = 2.21 µM and 0.13 µM, respectively). Further characterization confirmed their selective inhibition of NLRP3 inflammasome in both canonical and non-canonical activation pathways with no effects on AIM2 or NLRC4 inflammasome activation.
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Affiliation(s)
- Laura González-Cofrade
- Departamento de Farmacología, Farmacognosia y Botánica, Facultad de Farmacia, Universidad Complutense de Madrid (UCM), Plaza Ramón y Cajal s/n, 28040 Madrid, Spain
| | - Jack P Green
- Division of Neuroscience, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, University of Manchester, Manchester, United Kingdom; Lydia Becker Institute of Immunology and Inflammation, University of Manchester, Manchester, United Kingdom
| | - Irene Cuadrado
- Departamento de Farmacología, Farmacognosia y Botánica, Facultad de Farmacia, Universidad Complutense de Madrid (UCM), Plaza Ramón y Cajal s/n, 28040 Madrid, Spain
| | - Ángel Amesty
- Departamento de Química Orgánica, Instituto Universitario de Bio-Orgánica Antonio González, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 2, 38206 La Laguna, Tenerife, Spain
| | - Sandra Oramas-Royo
- Departamento de Química Orgánica, Instituto Universitario de Bio-Orgánica Antonio González, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 2, 38206 La Laguna, Tenerife, Spain
| | - David Brough
- Division of Neuroscience, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, University of Manchester, Manchester, United Kingdom; Lydia Becker Institute of Immunology and Inflammation, University of Manchester, Manchester, United Kingdom
| | - Ana Estévez-Braun
- Departamento de Química Orgánica, Instituto Universitario de Bio-Orgánica Antonio González, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 2, 38206 La Laguna, Tenerife, Spain.
| | - Sonsoles Hortelano
- Unidad de Terapias Farmacológicas, Área de Genética Humana, Instituto de Investigación de, Enfermedades Raras (IIER), Instituto de Salud Carlos III, Carretera de Majadahonda-Pozuelo Km 2, 28220 Madrid, Spain.
| | - Beatriz de Las Heras
- Departamento de Farmacología, Farmacognosia y Botánica, Facultad de Farmacia, Universidad Complutense de Madrid (UCM), Plaza Ramón y Cajal s/n, 28040 Madrid, Spain.
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77
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Ossola B, Rifat A, Rowland A, Hunter H, Drinkall S, Bender C, Hamlischer M, Teall M, Burley R, Barker DF, Cadwalladr D, Dickson L, Lawrence JMK, Harvey JRM, Lizio M, Xu X, Kavanagh E, Cheung T, Sheardown S, Lawrence CB, Harte M, Brough D, Madry C, Matthews K, Doyle K, Page K, Powell J, Brice NL, Bürli RW, Carlton MB, Dawson LA. Characterisation of C101248: A novel selective THIK-1 channel inhibitor for the modulation of microglial NLRP3-inflammasome. Neuropharmacology 2023; 224:109330. [PMID: 36375694 PMCID: PMC9841576 DOI: 10.1016/j.neuropharm.2022.109330] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 11/04/2022] [Accepted: 11/07/2022] [Indexed: 11/13/2022]
Abstract
Neuroinflammation, specifically the NLRP3 inflammasome cascade, is a common underlying pathological feature of many neurodegenerative diseases. Evidence suggests that NLRP3 activation involves changes in intracellular K+. Nuclear Enriched Transcript Sort Sequencing (NETSseq), which allows for deep sequencing of purified cell types from human post-mortem brain tissue, demonstrated a highly specific expression of the tandem pore domain halothane-inhibited K+ channel 1 (THIK-1) in microglia compared to other glial and neuronal cell types in the human brain. NETSseq also showed a significant increase of THIK-1 in microglia isolated from cortical regions of brains with Alzheimer's disease (AD) relative to control donors. Herein, we report the discovery and pharmacological characterisation of C101248, the first selective small-molecule inhibitor of THIK-1. C101248 showed a concentration-dependent inhibition of both mouse and human THIK-1 (IC50: ∼50 nM) and was inactive against K2P family members TREK-1 and TWIK-2, and Kv2.1. Whole-cell patch-clamp recordings of microglia from mouse hippocampal slices showed that C101248 potently blocked both tonic and ATP-evoked THIK-1 K+ currents. Notably, C101248 had no effect on other constitutively active resting conductance in slices from THIK-1-depleted mice. In isolated microglia, C101248 prevented NLRP3-dependent release of IL-1β, an effect not seen in THIK-1-depleted microglia. In conclusion, we demonstrated that inhibiting THIK-1 (a microglia specific gene that is upregulated in brains from donors with AD) using a novel selective modulator attenuates the NLRP3-dependent release of IL-1β from microglia, which suggests that this channel may be a potential therapeutic target for the modulation of neuroinflammation in AD.
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Affiliation(s)
- Bernardino Ossola
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK.
| | - Ali Rifat
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Neurophysiology, Charitéplatz 1, 10117 Berlin, Germany; Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - Anna Rowland
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK
| | - Helen Hunter
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK
| | - Samuel Drinkall
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - Clare Bender
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK
| | - Mayida Hamlischer
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK
| | - Martin Teall
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK
| | - Russell Burley
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK
| | - Daneil F Barker
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK
| | - David Cadwalladr
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK
| | - Louise Dickson
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK
| | - Jason M K Lawrence
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK
| | - Jenna R M Harvey
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK
| | - Marina Lizio
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK
| | - Xiao Xu
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK
| | - Edel Kavanagh
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK
| | - Toni Cheung
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK
| | - Steve Sheardown
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK
| | - Catherine B Lawrence
- Division of Neuroscience and Experimental Psychology, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK; Geoffrey Jefferson Brain Research Centre, The Manchester Academic Health Science Centre, Northern Care Alliance NHS Group, University of Manchester, Manchester, UK; The Lydia Becker Institute of Immunology and Inflammation, University of Manchester, Manchester, UK
| | - Michael Harte
- Division of Pharmacy & Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK; The Lydia Becker Institute of Immunology and Inflammation, University of Manchester, Manchester, UK
| | - David Brough
- Division of Neuroscience and Experimental Psychology, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK; Geoffrey Jefferson Brain Research Centre, The Manchester Academic Health Science Centre, Northern Care Alliance NHS Group, University of Manchester, Manchester, UK; The Lydia Becker Institute of Immunology and Inflammation, University of Manchester, Manchester, UK
| | - Christian Madry
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Neurophysiology, Charitéplatz 1, 10117 Berlin, Germany
| | - Kim Matthews
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK
| | - Kevin Doyle
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK
| | - Keith Page
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK
| | - Justin Powell
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK
| | - Nicola L Brice
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK
| | - Roland W Bürli
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK
| | - Mark B Carlton
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK
| | - Lee A Dawson
- Cerevance Ltd, 418 Cambridge Science Park, Milton Road, Cambridge, CB4 0PZ, UK
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He W, Dong H, Wu C, Zhong Y, Li J. The role of NLRP3 inflammasome in sepsis: A potential therapeutic target. Int Immunopharmacol 2023; 115:109697. [PMID: 37724951 DOI: 10.1016/j.intimp.2023.109697] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/28/2022] [Accepted: 01/03/2023] [Indexed: 01/22/2023]
Abstract
Sepsis is the host immune imbalance following infection and leads to organ dysfunction, with highly complicated pathophysiology. To date, sepsis still lacks effective therapies with high mortality rates. Recently, numerous studies have highlighted the potential of NLRP3 inflammasome as a therapeutic target during sepsis. NLRP3 inflammasome is a protein complex that could induce the activation of caspase-1 and the following release of pro-inflammatory cytokines such as IL-1β and IL-18. It was demonstrated that NLRP3 inflammasome was involved in the development and progression of sepsis. In contrast, inhibition of NLRP3 inflammasome activation could mitigate the inflammatory response, protect organ function, and improve outcomes and mortality. This paper illustrated the activation pathways of the NLRP3 inflammasome and its possible molecular mechanisms in the pathophysiology of sepsis. Meanwhile, the beneficial effects of inhibiting NLRP3 activation in sepsis-related organ damage were also presented. In addition, the diverse role of NLRP3 inflammasome in bacterial clearance was addressed. Of note, several herbal extracts targeting NLRP3 inflammasome in the treatment of sepsis were emphasized. We hope that this paper could provide a basis for further drug research targeting NLRP3 inflammasome.
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Affiliation(s)
- Wenfang He
- Department of Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Haiyun Dong
- Department of Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Chenfang Wu
- Department of Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yanjun Zhong
- Department of Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Jinxiu Li
- Department of Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China.
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79
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Huang N, Liu Y, Ai Z, Zhou Q, Mao H, Yang X, Xu Y, Yu X, Chen W. Mediation of serum albumin in the association of serum potassium with mortality in Chinese dialysis patients: a prospective cohort study. Chin Med J (Engl) 2023; 136:213-220. [PMID: 36805593 PMCID: PMC10106125 DOI: 10.1097/cm9.0000000000002588] [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: 07/09/2022] [Indexed: 02/23/2023] Open
Abstract
BACKGROUND The clinical importance of hypokalemia is likely underrecognized in Chinese dialysis patients, and whether its clinical effect was mediated by serum albumin is not fully elucidated. This study aimed to explore the association between serum potassium and mortality in dialysis patients of a Chinese nationwide multicenter cohort, taking albumin as a consideration. METHODS This was a prospective nation-wide multicenter cohort study. Restricted cubic splines were used to test the linearity of serum potassium and relationships with all-cause (AC) and cardiovascular (CV) mortality and a subsequent two-line piecewise linear model was fitted to approach the nadir. A mediation analysis was performed to examine relations of albumin to potassium and mortalities. RESULTS A total of 10,027 patients were included, of whom 6605 were peritoneal dialysis and 3422 were hemodialysis patients. In the overall population, the mean age was 51.7 ± 14.8 years, 55.3%(5546/10,027) were male, and the median dialysis vintage was 13.60 (4.70, 39.70) months. Baseline serum potassium was 4.30 ± 0.88 mmol/L. After a median follow-up period of 26.87 (14.77, 41.50) months, a U-shape was found between potassium and mortality, and a marked increase in risk at lower potassium but a moderate elevation in risk at higher potassium were observed. The nadir for AC mortality risk was estimated from piecewise linear models to be a potassium concentration of 4.0 mmol/L. Interestingly, the significance of the association between potassium and mortality was attenuated when albumin was introduced into the extended adjusted model. A subsequent significant mediation by albumin for potassium and AC and CV mortalities were found ( P < 0.001 for both), indicating that hypokalemia led to higher mortality mediated by low serum albumin, which was a surrogate of poor nutritional status and inflammation. CONCLUSIONS Associations between potassium and mortalities were U-shaped in the overall population. The nadir for AC mortality risk was at a potassium of 4.0 mmol/L. Serum albumin mediated the association between potassium and AC and CV mortalities.
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Affiliation(s)
- Naya Huang
- Department of Nephrology, The First Affiliated Hospital, Key Laboratory of Nephrology, Ministry of Health of China, Guangdong Provincial Key Laboratory of Nephrology, Sun Yat-Sen University, Guangzhou, Guangdong 510080, China
| | - Yuanying Liu
- Department of Nephrology, The First Affiliated Hospital, Key Laboratory of Nephrology, Ministry of Health of China, Guangdong Provincial Key Laboratory of Nephrology, Sun Yat-Sen University, Guangzhou, Guangdong 510080, China
| | - Zhen Ai
- Department of Nephrology, The First Affiliated Hospital, Key Laboratory of Nephrology, Ministry of Health of China, Guangdong Provincial Key Laboratory of Nephrology, Sun Yat-Sen University, Guangzhou, Guangdong 510080, China
| | - Qian Zhou
- Department of Medical Statistics, Clinical Trials Unit, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510080, China
| | - Haiping Mao
- Department of Nephrology, The First Affiliated Hospital, Key Laboratory of Nephrology, Ministry of Health of China, Guangdong Provincial Key Laboratory of Nephrology, Sun Yat-Sen University, Guangzhou, Guangdong 510080, China
| | - Xiao Yang
- Department of Nephrology, The First Affiliated Hospital, Key Laboratory of Nephrology, Ministry of Health of China, Guangdong Provincial Key Laboratory of Nephrology, Sun Yat-Sen University, Guangzhou, Guangdong 510080, China
| | - Yuanwen Xu
- Department of Nephrology, The First Affiliated Hospital, Key Laboratory of Nephrology, Ministry of Health of China, Guangdong Provincial Key Laboratory of Nephrology, Sun Yat-Sen University, Guangzhou, Guangdong 510080, China
| | - Xueqing Yu
- Department of Nephrology, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510080, China
| | - Wei Chen
- Department of Nephrology, The First Affiliated Hospital, Key Laboratory of Nephrology, Ministry of Health of China, Guangdong Provincial Key Laboratory of Nephrology, Sun Yat-Sen University, Guangzhou, Guangdong 510080, China
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80
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Zhan X, Li Q, Xu G, Xiao X, Bai Z. The mechanism of NLRP3 inflammasome activation and its pharmacological inhibitors. Front Immunol 2023; 13:1109938. [PMID: 36741414 PMCID: PMC9889537 DOI: 10.3389/fimmu.2022.1109938] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 12/29/2022] [Indexed: 01/20/2023] Open
Abstract
NLRP3 (NOD-, LRR-, and pyrin domain-containing protein 3) is a cytosolic pattern recognition receptor (PRR) that recognizes multiple pathogen-associated molecular patterns (PAMPs) and damage-associated molecular patterns (DAMPs). Once activated, NLRP3 initiates the inflammasome assembly together with the adaptor ASC and the effector caspase-1, leading to caspase-1 activation and subsequent cleavage of IL-1β and IL-18. Aberrant NLRP3 inflammasome activation is linked with the pathogenesis of multiple inflammatory diseases, such as cryopyrin-associated periodic syndromes, type 2 diabetes, non-alcoholic steatohepatitis, gout, and neurodegenerative diseases. Thus, NLRP3 is an important therapeutic target, and researchers are putting a lot of effort into developing its inhibitors. The review summarizes the latest advances in the mechanism of NLRP3 inflammasome activation and its pharmacological inhibitors.
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Affiliation(s)
- Xiaoyan Zhan
- Department of Hepatology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China,China Military Institute of Chinese Materia, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Qiang Li
- Department of Hepatology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China,China Military Institute of Chinese Materia, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Guang Xu
- Department of Hepatology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China,China Military Institute of Chinese Materia, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Xiaohe Xiao
- Department of Hepatology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China,China Military Institute of Chinese Materia, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China,*Correspondence: Xiaohe Xiao, ; Zhaofang Bai,
| | - Zhaofang Bai
- Department of Hepatology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China,China Military Institute of Chinese Materia, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China,*Correspondence: Xiaohe Xiao, ; Zhaofang Bai,
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81
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Man Q, Gao Z, Chen K. Functional Potassium Channels in Macrophages. J Membr Biol 2023; 256:175-187. [PMID: 36622407 DOI: 10.1007/s00232-022-00276-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Accepted: 12/30/2022] [Indexed: 01/10/2023]
Abstract
Macrophages are the predominant component of innate immunity, which is an important protective barrier of our body. Macrophages are present in all organs and tissues of the body, their main functions include immune surveillance, bacterial killing, tissue remodeling and repair, and clearance of cell debris. In addition, macrophages can present antigens to T cells and facilitate inflammatory response by releasing cytokines. Macrophages are of high concern due to their crucial roles in multiple physiological processes. In recent years, new advances are emerging after great efforts have been made to explore the mechanisms of macrophage activation. Ion channel is a class of multimeric transmembrane protein that allows specific ions to go through cell membrane. The flow of ions through ion channel between inside and outside of cell membrane is required for maintaining cell morphology and intracellular signal transduction. Expressions of various ion channels in macrophages have been detected. The roles of ion channels in macrophage activation are gradually caught attention. K+ channels are the most studied channels in immune system. However, very few of published papers reviewed the studies of K+ channels on macrophages. Here, we will review the four types of K+ channels that are expressed in macrophages: voltage-gated K+ channel, calcium-activated K+ channel, inwardly rectifying K+ channel and two-pore domain K+ channel.
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Affiliation(s)
- Qiaoyan Man
- Department of Pharmacology, Ningbo University School of Medicine, A506, Wang Changlai Building818 Fenghua Rd, Ningbo, China
| | - Zhe Gao
- Ningbo Institute of Medical Sciences, 42 Yangshan Rd, Ningbo, China.
| | - Kuihao Chen
- Department of Pharmacology, Ningbo University School of Medicine, A506, Wang Changlai Building818 Fenghua Rd, Ningbo, China.
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82
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Shi XY, Yue XL, Xu YS, Jiang M, Li RJ. Aldehyde dehydrogenase 2 and NOD-like receptor thermal protein domain associated protein 3 inflammasome in atherosclerotic cardiovascular diseases: A systematic review of the current evidence. Front Cardiovasc Med 2023; 10:1062502. [PMID: 36910525 PMCID: PMC9996072 DOI: 10.3389/fcvm.2023.1062502] [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: 10/06/2022] [Accepted: 02/02/2023] [Indexed: 02/25/2023] Open
Abstract
Inflammation and dyslipidemia underlie the pathological basis of atherosclerosis (AS). Clinical studies have confirmed that there is still residual risk of atherosclerotic cardiovascular diseases (ASCVD) even after intense reduction of LDL. Some of this residual risk can be explained by inflammation as anti-inflammatory therapy is effective in improving outcomes in subjects treated with LDL-lowering agents. NOD-like receptor thermal protein domain associated protein 3 (NLRP3) inflammasome activation is closely related to early-stage inflammation in AS. Aldehyde dehydrogenase 2 (ALDH2) is an important enzyme of toxic aldehyde metabolism located in mitochondria and works in the metabolism of toxic aldehydes such as 4-HNE and MDA. Despite studies confirming that ALDH2 can negatively regulate NLRP3 inflammasome and delay the development of atherosclerosis, the mechanisms involved are still poorly understood. Reactive Oxygen Species (ROS) is a common downstream pathway activated for NLRP3 inflammasome. ALDH2 can reduce the multiple sources of ROS, such as oxidative stress, inflammation, and mitochondrial damage, thereby reducing the activation of NLRP3 inflammasome. Further, according to the downstream of ALDH2 and the upstream of NLRP3, the molecules and related mechanisms of ALDH2 on NLRP3 inflammasome are comprehensively expounded as possible. The potential mechanism may provide potential inroads for treating ASCVD.
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Affiliation(s)
- Xue-Yun Shi
- Qilu Medical College, Shandong University, Jinan, China
| | - Xiao-Lin Yue
- Qilu Medical College, Shandong University, Jinan, China
| | - You-Shun Xu
- Qilu Medical College, Shandong University, Jinan, China
| | - Mei Jiang
- Department of Emergency, Qilu Hospital, Shandong University, Jinan, China
| | - Rui-Jian Li
- Department of Emergency, Qilu Hospital, Shandong University, Jinan, China
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83
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Tang H, Sun Y, Fachim HA, Cheung TKD, Reynolds GP, Harte MK. Elevated Expression of Two Pore Potassium Channel THIK-1 in Alzheimer's Disease: An Inflammatory Mechanism. J Alzheimers Dis 2023; 95:1757-1769. [PMID: 37718820 DOI: 10.3233/jad-230616] [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: 09/19/2023]
Abstract
INTRODUCTION Tandem pore domain halothane-inhibited K+ channel 1 (THIK-1, coded by KCNK13) provides an upstream regulation of the activation of the NOD-like receptor pyrin domain containing 3 (NLRP3) inflammasome, which has been suggested as one of the key mechanisms of the pathological process in neurodegeneration mainly from in vitro and in vivo model systems studies. However, unequivocal evidence from neurodegenerative disorders has been lacking. OBJECTIVE To investigate the involvement of the THIK-1/NLRP3 pathway in the pathological process of Alzheimer's disease (AD) and Parkinson's disease (PD). METHODS This study investigated gene expression of markers in the THIK-1/NLRP3 pathway in an animal model representing AD as well as in human postmortem brains of AD and PD by quantitative real-time PCR. THIK-1 protein expression was determined using automated capillary electrophoresis immunoblotting. Furthermore, DNA methylation of KCNK13 was analysed in AD cohort by pyrosequencing. RESULTS A substantial upregulation of KCNK13, glial activation markers, NLRP3 inflammasome components, and IL1B was observed in the animal study. Increased expression of KCNK13 support an inflammatory glial cell activation in both advanced AD and PD. The increase in KCNK13 expression was also supported by downregulation in DNA methylation of KCNK13 in AD. CONCLUSIONS The association between THIK-1 K+ channels expression and pathology changes indicates a THIK-1-induced activation of this glial subtype in AD and PD. Therefore, specific blocks of the microglial THIK-1 K+ channels at the early stage of AD and PD may be beneficial for the patients.
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Affiliation(s)
- Hao Tang
- Department of Neurology, The First People's Hospital of Yunnan Province, Kunming, China
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Yuhong Sun
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Helene A Fachim
- The School of Medicine and Manchester Academic Health Sciences Centre, University of Manchester, Manchester, UK
- Department of Diabetes and Endocrinology, Salford Royal Hospital, Salford, UK
| | | | - Gavin P Reynolds
- Biomolecular Sciences Research Centre, Sheffield Hallam University, Sheffield, UK
| | - Michael K Harte
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
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Hartmann A, Vila-Verde C, Guimarães FS, Joca SR, Lisboa SF. The NLRP3 Inflammasome in Stress Response: Another Target for the Promiscuous Cannabidiol. Curr Neuropharmacol 2023; 21:284-308. [PMID: 35410608 PMCID: PMC10190150 DOI: 10.2174/1570159x20666220411101217] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 03/14/2022] [Accepted: 03/27/2022] [Indexed: 11/22/2022] Open
Abstract
Many psychiatric patients do not respond to conventional therapy. There is a vast effort to investigate possible mechanisms involved in treatment resistance, trying to provide better treatment options, and several data points toward a possible involvement of inflammatory mechanisms. Microglia, glial, and resident immune cells are involved in complex responses in the brain, orchestrating homeostatic functions, such as synaptic pruning and maintaining neuronal activity. In contrast, microglia play a major role in neuroinflammation, neurodegeneration, and cell death. Increasing evidence implicate microglia dysfunction in neuropsychiatric disorders. The mechanisms are still unclear, but one pathway in microglia has received increased attention in the last 8 years, i.e., the NLRP3 inflammasome pathway. Stress response and inflammation, including microglia activation, can be attenuated by Cannabidiol (CBD). CBD has antidepressant, anti-stress, antipsychotic, anti-inflammatory, and other properties. CBD effects are mediated by direct or indirect modulation of many receptors, enzymes, and other targets. This review will highlight some findings for neuroinflammation and microglia involvement in stress-related psychiatric disorders, particularly addressing the NLRP3 inflammasome pathway. Moreover, we will discuss evidence and mechanisms for CBD effects in psychiatric disorders and animal models and address its potential effects on stress response via neuroinflammation and NLRP3 inflammasome modulation.
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Affiliation(s)
- Alice Hartmann
- Department of Pharmacology, School of Medicine of Ribeirão Preto (FMRP), University of São Paulo (USP), Ribeirão Preto, Brazil
| | - Carla Vila-Verde
- Department of Pharmacology, School of Medicine of Ribeirão Preto (FMRP), University of São Paulo (USP), Ribeirão Preto, Brazil
| | - Francisco S. Guimarães
- Department of Pharmacology, School of Medicine of Ribeirão Preto (FMRP), University of São Paulo (USP), Ribeirão Preto, Brazil
- Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), University of São Paulo, São Paulo, Brazil
| | - Sâmia R. Joca
- Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), University of São Paulo, São Paulo, Brazil
- BioMolecular Sciences Department, School of Pharmaceutical Sciences of Ribeirão Preto (FCFRP), University of São Paulo (USP);
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Sabrina F. Lisboa
- Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), University of São Paulo, São Paulo, Brazil
- BioMolecular Sciences Department, School of Pharmaceutical Sciences of Ribeirão Preto (FCFRP), University of São Paulo (USP);
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85
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Leal VNC, Pontillo A. Canonical Inflammasomes. Methods Mol Biol 2023; 2696:1-27. [PMID: 37578712 DOI: 10.1007/978-1-0716-3350-2_1] [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: 08/15/2023]
Abstract
The innate immune response represents the first line of host defense, and it is able to detect pathogen- and damage-associated molecular patterns (PAMPs and DAMPs, respectively) through a variety of pattern recognition receptors (PRRs). Among these PRRs, certain cytosolic receptors of the NLRs family (specifically NLRP1, NLRP3, NLRC4, and NAIP) or those containing at least a pyrin domain (PYD) such as pyrin and AIM2, activate the multimeric complex known as inflammasome, and its effector enzyme caspase-1. The caspase-1 induces the proteolytic maturation of the pro-inflammatory cytokines IL-1ß and IL-18, as well as the pore-forming protein gasdermin D (GSDMD). GSDMD is responsible for the release of the two cytokines and the induction of lytic and inflammatory cell death known as pyroptosis. Each inflammasome receptor detects specific stimuli, either directly or indirectly, thereby enhancing the cell's ability to sense infections or homeostatic disturbances. In this chapter, we present the activation mechanism of the so-called "canonical" inflammasomes.
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Affiliation(s)
| | - Alessandra Pontillo
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brasil.
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Wang Y, Wang C, He Q, Chen G, Yu J, Cang J, Zhong M. Inhibition of sphingosine-1-phosphate receptor 3 suppresses ATP-induced NLRP3 inflammasome activation in macrophages via TWIK2-mediated potassium efflux. Front Immunol 2023; 14:1090202. [PMID: 36798132 PMCID: PMC9927198 DOI: 10.3389/fimmu.2023.1090202] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Accepted: 01/16/2023] [Indexed: 02/04/2023] Open
Abstract
Background Inhibition of sphingosine kinase 1 (SphK1), which catalyzes bioactive lipid sphingosine-1-phosphate (S1P), attenuates NLRP3 inflammasome activation. S1P exerts most of its function by binding to S1P receptors (S1PR1-5). The roles of S1P receptors in NLRP3 inflammasome activation remain unclear. Materials and methods The mRNA expressions of S1PRs in bone marrow-derived macrophages (BMDMs) were measured by real-time quantitative polymerase chain reaction (qPCR) assays. BMDMs were primed with LPS and stimulated with NLRP3 activators, including ATP, nigericin, and imiquimod. Interleukin-1β (IL-1β) in the cell culture supernatant was detected by enzyme-linked immunosorbent assay (ELISA). Intracellular potassium was labeled with a potassium indicator and was measured by confocal microscopy. Protein expression in whole-cell or plasma membrane fraction was measured by Western blot. Cecal ligation and puncture (CLP) was induced in C57BL/6J mice. Mortality, lung wet/dry ratio, NLRP3 activation, and bacterial loads were measured. Results Macrophages expressed all five S1PRs in the resting state. The mRNA expression of S1PR3 was upregulated after lipopolysaccharide (LPS) stimulation. Inhibition of S1PR3 suppressed NLRP3 and pro-IL-1β in macrophages primed with LPS. Inhibition of S1PR3 attenuated ATP-induced NLRP3 inflammasome activation, enhanced nigericin-induced NLRP3 activation, and did not affect imiquimod-induced NLRP3 inflammasome activation. In addition, inhibition of S1PR3 suppressed ATP-induced intracellular potassium efflux. Inhibition of S1PR3 did not affect the mRNA or protein expression of TWIK2 in LPS-primed BMDMs. ATP stimulation induced TWIK2 expression in the plasma membrane of LPS-primed BMDMs, and inhibition of S1PR3 impeded the membrane expression of TWIK2 induced by ATP. Compared with CLP mice treated with vehicle, CLP mice treated with the S1PR3 antagonist, TY52156, had aggravated pulmonary edema, increased bacterial loads in the lung, liver, spleen, and blood, and a higher seven-day mortality rate. Conclusions Inhibition of S1PR3 suppresses the expression of NLRP3 and pro-IL-1β during LPS priming, and attenuates ATP-induced NLRP3 inflammasome activation by impeding membrane trafficking of TWIK2 and potassium efflux. Although inhibition of S1PR3 decreases IL-1β maturation in the lungs, it leads to higher bacterial loads and mortality in CLP mice.
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Affiliation(s)
- Yingqin Wang
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Chen Wang
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Qiaolan He
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Guannan Chen
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jie Yu
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jing Cang
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Ming Zhong
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Key Laboratory of Lung Inflammation and Injury, Shanghai, China.,Shanghai Institute of Infectious Disease and Biosecurity, School of Public Health, Fudan University, Shanghai, China
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Xia GQ, Fang Q, Cai JN, Li ZX, Zhang FZ, Lv XW. P2X7 Receptor in Alcoholic Steatohepatitis and Alcoholic Liver Fibrosis. J Clin Transl Hepatol 2022; 10:1205-1212. [PMID: 36381094 PMCID: PMC9634783 DOI: 10.14218/jcth.2022.00022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 04/12/2022] [Accepted: 04/21/2022] [Indexed: 12/04/2022] Open
Abstract
Alcoholic liver disease is one of the most common chronic liver diseases in the world. It is a liver disease caused by prolonged heavy drinking and its main clinical features are nausea, vomiting, enlargement of the liver, and jaundice. Recent studies suggest that Kupffer cell-mediated inflammatory response is a core driver in the development of alcoholic steatohepatitis and alcoholic liver fibrosis. As a danger signal, extracellular ATP activates the assembly of NLPR3 inflammasome by acting on purine P2X7 receptor, the activated NLRP3 inflammasome prompts ASC to cleave pro-cCaspase-1 into active caspase-1in KCs. Active caspase-1 promotes the conversion of pro-IL-1β to IL-1β, which further enhances the inflammatory response. Here, we briefly review the role of the P2X7R-NLRP3 inflammasome axis in the pathogenesis of alcoholic liver disease and the evolution of alcoholic steatohepatitis and alcoholic liver fibrosis. Regulation of the inflammasome axis of P2X7R-NLRP3 may be a new approach for the treatment of alcoholic liver disease.
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Affiliation(s)
- Guo-Qing Xia
- Institute for Liver Diseases of Anhui Medical University, Hefei, Anhui, China
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, Anhui, China
- Inflammation and Immune-Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, Anhui, China
| | - Qian Fang
- Institute for Liver Diseases of Anhui Medical University, Hefei, Anhui, China
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, Anhui, China
- Inflammation and Immune-Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, Anhui, China
| | - Jun-Nan Cai
- Institute for Liver Diseases of Anhui Medical University, Hefei, Anhui, China
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, Anhui, China
- Inflammation and Immune-Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, Anhui, China
| | - Zi-Xuan Li
- Institute for Liver Diseases of Anhui Medical University, Hefei, Anhui, China
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, Anhui, China
- Inflammation and Immune-Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, Anhui, China
| | - Feng-Zhi Zhang
- Wannan Medical College, Yijishan Hospital, Affiliated Hospital 1, Wuhu, Anhui, China
| | - Xiong-Wen Lv
- Institute for Liver Diseases of Anhui Medical University, Hefei, Anhui, China
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, Anhui, China
- Inflammation and Immune-Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, Anhui, China
- Correspondence to: Xiong-Wen Lv, School of Pharmacy, Anhui Medical University, 81 Mei Shan Road, Hefei, Anhui 230032, China. ORCID: https://orcid.org/0000-0003-2354-0168. Tel: +86-13515519961, Fax: +86-551-63633742, E-mail:
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Decreased Interleukin-1 Family Cytokine Production in Patients with Nontuberculous Mycobacterial Lung Disease. Microbiol Spectr 2022; 10:e0311022. [PMID: 36255321 PMCID: PMC9769609 DOI: 10.1128/spectrum.03110-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Nontuberculous mycobacteria (NTM) cause pulmonary disease in individuals without obvious immunodeficiency. This study was initiated to gain insight into the immunological factors that predispose persons to NTM pulmonary disease (NTMPD). Blood was obtained from 15 pairs of NTMPD patients and their healthy household contacts. Peripheral blood mononuclear cells (PBMCs) were stimulated with the Mycobacterium avium complex (MAC). A total of 34 cytokines and chemokines were evaluated in plasma and PBMC culture supernatants using multiplex immunoassays, and gene expression in the PBMCs was determined using real-time PCR. PBMCs from NTMPD patients produced significantly less interleukin-1β (IL-1β), IL-18, IL-1α, and IL-10 than PBMCs from their healthy household contacts in response to MAC. Although plasma RANTES levels were high in NTMPD patients, they had no effect on IL-1β production by macrophages infected with MAC. Toll-like receptor 2 (TLR2) and TWIK2 (a two-pore domain K+ channel) were impaired in response to MAC in PBMCs of NTMPD patients. A TLR2 inhibitor decreased all four cytokines, whereas a two-pore domain K+ channel inhibitor decreased the production of IL-1β, IL-18, and IL-1α, but not IL-10, by MAC-stimulated PBMCs and monocytes. The ratio of monocytes was reduced in whole blood of NTMPD patients compared with that of healthy household contacts. A reduced monocyte ratio might contribute to the attenuated production of IL-1 family cytokines by PBMCs of NTMPD patients in response to MAC stimulations. Collectively, our findings suggest that the attenuated IL-1 response may increase susceptibility to NTM pulmonary infection through multiple factors, including impaired expression of the TLR2 and TWIK2 and reduced monocyte ratio. IMPORTANCE Upon MAC stimulation, the production of IL-1 family cytokines and IL-10 by PBMCs of NTMPD patients was attenuated compared with that of healthy household contacts. Upon MAC stimulation, the expression of TLR2 and TWIK2 (one of the two-pore domain K+ channels) was attenuated in PBMCs of NTMPD patients compared with that of healthy household contacts. The production of IL-1 family cytokines by MAC-stimulated PBMCs and MAC-infected monocytes of healthy donors was reduced by a TLR2 inhibitor and two-pore domain K+ channel inhibitor. The ratio of monocytes was reduced in whole blood of NTMPD patients compared with that of healthy household contacts. Collectively, our data suggest that defects in the expression of TLR2 and TWIK2 in human PBMCs or monocytes and reduced monocyte ratio are involved in the reduced production of IL-1 family cytokines, and it may increase susceptibility to NTM pulmonary infection.
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Pore-forming proteins as drivers of membrane permeabilization in cell death pathways. Nat Rev Mol Cell Biol 2022; 24:312-333. [PMID: 36543934 DOI: 10.1038/s41580-022-00564-w] [Citation(s) in RCA: 63] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/08/2022] [Indexed: 12/24/2022]
Abstract
Regulated cell death (RCD) relies on activation and recruitment of pore-forming proteins (PFPs) that function as executioners of specific cell death pathways: apoptosis regulator BAX (BAX), BCL-2 homologous antagonist/killer (BAK) and BCL-2-related ovarian killer protein (BOK) for apoptosis, gasdermins (GSDMs) for pyroptosis and mixed lineage kinase domain-like protein (MLKL) for necroptosis. Inactive precursors of PFPs are converted into pore-forming entities through activation, membrane recruitment, membrane insertion and oligomerization. These mechanisms involve protein-protein and protein-lipid interactions, proteolytic processing and phosphorylation. In this Review, we discuss the structural rearrangements incurred by RCD-related PFPs and describe the mechanisms that manifest conversion from autoinhibited to membrane-embedded molecular states. We further discuss the formation and maturation of membrane pores formed by BAX/BAK/BOK, GSDMs and MLKL, leading to diverse pore architectures. Lastly, we highlight commonalities and differences of PFP mechanisms involving BAX/BAK/BOK, GSDMs and MLKL and conclude with a discussion on how, in a population of challenged cells, the coexistence of cell death modalities may have profound physiological and pathophysiological implications.
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90
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Zhang RN, Sun ZJ, Zhang L. Pyroptosis in inflammatory bone diseases: Molecular insights and targeting strategies. FASEB J 2022; 36:e22670. [PMID: 36412502 DOI: 10.1096/fj.202201229r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 11/02/2022] [Accepted: 11/11/2022] [Indexed: 11/23/2022]
Abstract
Inflammatory bone diseases include osteoarthritis (OA) and rheumatoid arthritis (RA), which can cause severe bone damage in a chronic inflammation state, putting tremendous pressure on the patients' families and government agencies regarding medical costs. In addition, the complexity of osteoimmunology makes research on these diseases difficult. Hence, it is urgent to determine the potential mechanisms and find effective drugs to target inflammatory bone diseases to reduce the negative effects of these diseases. Recently, pyroptosis, a gasdermin-induced necrotic cell death featuring secretion of pro-inflammatory cytokines and lysis, has become widely known. Based on the effect of pyroptosis on immunity, this process has gradually emerged as a vital component in the etiopathogenesis of inflammatory bone diseases. Herein, we review the characteristics and mechanisms of pyroptosis and then focus on its clinical significance in inflammatory bone diseases. In addition, we summarize the current research progress of drugs targeting pyroptosis to enhance the therapeutic efficacy of inflammatory bone diseases and provide new insights for future directions.
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Affiliation(s)
- Ruo-Nan Zhang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China.,Department of Endodontics, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Zhi-Jun Sun
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China.,Department of Oral Maxillofacial-Head Neck Oncology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Lu Zhang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China.,Department of Endodontics, School and Hospital of Stomatology, Wuhan University, Wuhan, China
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91
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Wang J, Pan Y, Wei G, Mao H, Liu R, He Y. Damage-associated molecular patterns in vitiligo: igniter fuse from oxidative stress to melanocyte loss. Redox Rep 2022; 27:193-199. [PMID: 36154894 PMCID: PMC9518600 DOI: 10.1080/13510002.2022.2123864] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
OBJECTIVES The pathogenesis of vitiligo remains unclear. In this review, we comprehensively describe the role of damage associated molecular patterns (DAMPs) during vitiligo pathogenesis. METHODS Published papers on vitiligo, oxidative stress and DAMPs were collected and reviewed via database searching on PubMed, MEDLINE and Embase, etc. RESULTS Oxidative stress may be an important inducer of vitiligo. At high oxidative stress levels, damage-associated molecular patterns (DAMPs) are released from keratinocytes or melanocytes in the skin and induce downstream immune responses during vitiligo. Treatment regimens targeting DAMPs can effectively improve disease severity. DISCUSSION DAMPs play key roles in initiating host defenses against danger signals, deteriorating the condition of vitiligo. DAMP levels in serum and skin may be used as biomarkers to indicate vitiligo activity and prognosis. Targeted therapies, incorporating HMGB1, Hsp70, and IL-15 could significantly improve disease etiology. Thus, novel strategies could be identified for vitiligo treatment by targeting DAMPs.
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Affiliation(s)
- Jingying Wang
- Department of Dermatology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, People’s Republic of China
| | - Yinghao Pan
- Department of Dermatology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, People’s Republic of China
| | - Guangmin Wei
- Department of Dermatology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, People’s Republic of China
| | - Hanxiao Mao
- Department of Dermatology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, People’s Republic of China
| | - Rulan Liu
- Department of Dermatology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, People’s Republic of China
| | - Yuanmin He
- Department of Dermatology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, People’s Republic of China, Yuanmin He Department of Dermatology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, People’s Republic of China
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Liang Y, Gu T, Peng S, Lin Y, Liu J, Wang X, Huang X, Zhang X, Zhu J, Zhao L, Fan C, Wang G, Gu X, Lin J. p16 INK4a Plays Critical Role in Exacerbating Inflammaging in High Fat Diet Induced Skin. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:3415528. [PMID: 36457728 PMCID: PMC9706253 DOI: 10.1155/2022/3415528] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 10/29/2022] [Accepted: 11/01/2022] [Indexed: 09/02/2023]
Abstract
BACKGROUND Long term high fat diets (HFD) promote skin aging pathogenesis, but detailed mechanisms remain unclear especially for inflammaging, which has recently emerged as a pathway correlating aging and age-related disease with inflammation. p16INK4a (hereafter termed p16) inhibits the cell cycle, with p16 deletion significantly inhibiting inflammaging. We observed that HFD-induced p16 overexpression in the skin. Therefore, we investigated if p16 exacerbated inflammaging in HFD-induced skin and also if p16 deletion exerted protective effects against this process. METHODS Eight-week-old double knockout (KO) ApoE-/-p16-/- mice and ApoE-/- littermates were fed HFD for 12 weeks and their skin phenotypes were analyzed. We measured skin fibrosis, senescence-associated secretory phenotype (SASP) levels, and integrin-inflammasome pathway activation using histopathological, RNA-sequencing (RNA-seq), bioinformatics analysis, and molecular techniques. RESULTS We found that HFD contributed to inflammaging in the skin by activating the NLRP3 inflammasome pathway, increasing inflammatory infiltration, and promoting apoptosis by balancing expression between proapoptotic and antiapoptotic molecules. p16 knockout, when compared with the ApoE-/- phenotype, inhibited skin fibrosis by ameliorating inflammatory infiltration and proinflammatory factor expression (Interleukin-1β (IL-1β), Interleukin-6 (IL-6), and tumor necrosis factor-α (TNF-α)), and also alleviated inflammaging skin progress induced by HFD in the ApoE-/- mouse model. RNA-seq showed that p16 KO mice inhibited both integrin-inflammasome and NF-κB proinflammatory pathway activation. CONCLUSIONS p16 deletion or p16 positive cell clearance could be a novel strategy preventing long term HFD-induced skin aging.
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Affiliation(s)
- Yan Liang
- Department of Plastic Surgery, The Affiliated Friendship Plastic Surgery Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Tianya Gu
- Department of Plastic Surgery, The Affiliated Friendship Plastic Surgery Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Su Peng
- Department of Plastic Surgery, The Affiliated Friendship Plastic Surgery Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Yi Lin
- Department of Plastic Surgery, The Affiliated Friendship Plastic Surgery Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - JiaBao Liu
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Xiaoyan Wang
- Department of Cardiology, The Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu 214062, China
| | - Xin Huang
- Department of Plastic Surgery, The Affiliated Friendship Plastic Surgery Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Xiaodong Zhang
- Department of Cardiology, The Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu 214062, China
| | - Jun Zhu
- Department of Cardiology, The Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu 214062, China
| | - Lin Zhao
- Department of Cardiology, The Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu 214062, China
| | - Changyan Fan
- Department of Cardiology, The Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu 214062, China
| | - Guangyan Wang
- Department of Cardiology, The Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu 214062, China
| | - Xin Gu
- Department of Plastic Surgery, The Affiliated Friendship Plastic Surgery Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
- Department of Cardiology, The Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu 214062, China
| | - JinDe Lin
- Department of Plastic Surgery, The Affiliated Friendship Plastic Surgery Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
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93
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The role of Nod-like receptor protein 3 inflammasome activated by ion channels in multiple diseases. Mol Cell Biochem 2022; 478:1397-1410. [PMID: 36378463 PMCID: PMC10164009 DOI: 10.1007/s11010-022-04602-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 10/24/2022] [Indexed: 11/16/2022]
Abstract
AbstractThe inflammasome is a multimeric protein complex located in the cytoplasm that is activated by many factors and subsequently promotes the release of proinflammatory factors such as interleukin (IL)-1β and IL-18, resulting in a series of inflammatory responses that ultimately lead to the occurrence of various diseases. The Nod-like receptor protein 3 (NLRP3) inflammasome is the most characteristic type and the most widely studied among many inflammasomes. Activation of the NLRP3 inflammasome is closely related to the occurrence of many diseases, such as Alzheimer's disease. At present, a large number of studies have focused on the mechanisms underlying the activation of the NLRP3 inflammasome. Plenty of articles have reported the activation of the NLRP3 inflammasome by various ions, such as K+ and Na+ reflux and Ca2+ influx. However, few articles have reviewed the effects of various ion channels on the activation of the NLRP3 inflammasome and the relationship between the diseases caused by these proteins. This article mainly summarizes the relationship between intracellular and extracellular ion activities and ion channels and the activation of the NLRP3 inflammasome. We also provide a general summary of the diseases of each system caused by NLRP3 activation. We hope that more research will provide options for the treatment of diseases driven by the NLRP3 inflammasome.
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94
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Puylaert P, Zurek M, Rayner KJ, De Meyer GRY, Martinet W. Regulated Necrosis in Atherosclerosis. Arterioscler Thromb Vasc Biol 2022; 42:1283-1306. [PMID: 36134566 DOI: 10.1161/atvbaha.122.318177] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
During atherosclerosis, lipid-rich plaques are formed in large- and medium-sized arteries, which can reduce blood flow to tissues. This situation becomes particularly precarious when a plaque develops an unstable phenotype and becomes prone to rupture. Despite advances in identifying and treating vulnerable plaques, the mortality rate and disability caused by such lesions remains the number one health threat in developed countries. Vulnerable, unstable plaques are characterized by a large necrotic core, implying a prominent role for necrotic cell death in atherosclerosis and plaque destabilization. Necrosis can occur accidentally or can be induced by tightly regulated pathways. Over the past decades, different forms of regulated necrosis, including necroptosis, ferroptosis, pyroptosis, and secondary necrosis, have been identified, and these may play an important role during atherogenesis. In this review, we describe several forms of necrosis that may occur in atherosclerosis and how pharmacological modulation of these pathways can stabilize vulnerable plaques. Moreover, some challenges of targeting necrosis in atherosclerosis such as the presence of multiple death-inducing stimuli in plaques and extensive cross-talk between necrosis pathways are discussed. A better understanding of the role of (regulated) necrosis in atherosclerosis and the mechanisms contributing to plaque destabilization may open doors to novel pharmacological strategies and will enable clinicians to tackle the residual cardiovascular risk that remains in many atherosclerosis patients.
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Affiliation(s)
- Pauline Puylaert
- Laboratory of Physiopharmacology and Infla-Med Centre of Excellence, University of Antwerp, Belgium (P.P., M.Z., G.R.Y.D.M., W.M.)
| | - Michelle Zurek
- Laboratory of Physiopharmacology and Infla-Med Centre of Excellence, University of Antwerp, Belgium (P.P., M.Z., G.R.Y.D.M., W.M.)
| | - Katey J Rayner
- Department of Biochemistry, Microbiology and Immunology and Centre for Infection, Immunity and Inflammation, Faculty of Medicine, University of Ottawa, ON, Canada (K.J.R.).,University of Ottawa Heart Institute, ON, Canada (K.J.R.)
| | - Guido R Y De Meyer
- Laboratory of Physiopharmacology and Infla-Med Centre of Excellence, University of Antwerp, Belgium (P.P., M.Z., G.R.Y.D.M., W.M.)
| | - Wim Martinet
- Laboratory of Physiopharmacology and Infla-Med Centre of Excellence, University of Antwerp, Belgium (P.P., M.Z., G.R.Y.D.M., W.M.)
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95
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How location and cellular signaling combine to activate the NLRP3 inflammasome. Cell Mol Immunol 2022; 19:1201-1214. [PMID: 36127465 PMCID: PMC9622870 DOI: 10.1038/s41423-022-00922-w] [Citation(s) in RCA: 59] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Accepted: 08/15/2022] [Indexed: 01/27/2023] Open
Abstract
NOD-, LRR-, and pyrin domain-containing 3 (NLRP3) is a cytosolic innate immune sensor of cellular stress signals, triggered by infection and sterile inflammation. Upon detection of an activating stimulus, NLRP3 transitions from an inactive homo-oligomeric multimer into an active multimeric inflammasome, which promotes the helical oligomeric assembly of the adaptor molecule ASC. ASC oligomers provide a platform for caspase-1 activation, leading to the proteolytic cleavage and activation of proinflammatory cytokines in the IL-1 family and gasdermin D, which can induce a lytic form of cell death. Recent studies investigating both the cellular requirement for NLRP3 activation and the structure of NLRP3 have revealed the complex regulation of NLRP3 and the multiple steps involved in its activation. This review presents a perspective on the biochemical and cellular processes controlling the assembly of the NLRP3 inflammasome with particular emphasis on structural regulation and the role of organelles. We also highlight the latest research on metabolic control of this inflammatory pathway and discuss promising clinical targets for intervention.
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96
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Qiang R, Li Y, Dai X, Lv W. NLRP3 inflammasome in digestive diseases: From mechanism to therapy. Front Immunol 2022; 13:978190. [PMID: 36389791 PMCID: PMC9644028 DOI: 10.3389/fimmu.2022.978190] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 10/12/2022] [Indexed: 09/05/2023] Open
Abstract
Digestive system diseases remain a formidable challenge to human health. NOD-like receptor family pyrin domain containing 3 (NLRP3) inflammasome is the most characteristic multimeric protein complex and is involved in a wide range of digestive diseases as intracellular innate immune sensors. It has emerged as a research hotspot in recent years. In this context, we provide a comprehensive review of NLRP3 inflammasome priming and activation in the pathogenesis of digestive diseases, including clinical and preclinical studies. Moreover, the scientific evidence of small-molecule chemical drugs, biologics, and phytochemicals, which acts on different steps of the NLRP3 inflammasome, is reviewed. Above all, deep interrogation of the NLRP3 inflammasome is a better insight of the pathomechanism of digestive diseases. We believe that the NLRP3 inflammasome will hold promise as a novel valuable target and research direction for treating digestive disorders.
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Affiliation(s)
- Rui Qiang
- *Correspondence: Rui Qiang, ; Yanbo Li, ; Wenliang Lv,
| | - Yanbo Li
- *Correspondence: Rui Qiang, ; Yanbo Li, ; Wenliang Lv,
| | | | - Wenliang Lv
- *Correspondence: Rui Qiang, ; Yanbo Li, ; Wenliang Lv,
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97
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Yan P, Ke B, Fang X. Ion channels as a therapeutic target for renal fibrosis. Front Physiol 2022; 13:1019028. [PMID: 36277193 PMCID: PMC9581181 DOI: 10.3389/fphys.2022.1019028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Accepted: 09/20/2022] [Indexed: 11/13/2022] Open
Abstract
Renal ion channel transport and electrolyte disturbances play an important role in the process of functional impairment and fibrosis in the kidney. It is well known that there are limited effective drugs for the treatment of renal fibrosis, and since a large number of ion channels are involved in the renal fibrosis process, understanding the mechanisms of ion channel transport and the complex network of signaling cascades between them is essential to identify potential therapeutic approaches to slow down renal fibrosis. This review summarizes the current work of ion channels in renal fibrosis. We pay close attention to the effect of cystic fibrosis transmembrane conductance regulator (CFTR), transmembrane Member 16A (TMEM16A) and other Cl− channel mediated signaling pathways and ion concentrations on fibrosis, as well as the various complex mechanisms for the action of Ca2+ handling channels including Ca2+-release-activated Ca2+ channel (CRAC), purinergic receptor, and transient receptor potential (TRP) channels. Furthermore, we also focus on the contribution of Na+ transport such as epithelial sodium channel (ENaC), Na+, K+-ATPase, Na+-H+ exchangers, and K+ channels like Ca2+-activated K+ channels, voltage-dependent K+ channel, ATP-sensitive K+ channels on renal fibrosis. Proposed potential therapeutic approaches through further dissection of these mechanisms may provide new therapeutic opportunities to reduce the burden of chronic kidney disease.
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He Y, Chang Y, Peng Y, Zhu J, Liu K, Chen J, Wu Y, Ji Z, Lin Z, Wang S, Gupta S, Zang N, Pan S, Huang K. Glibenclamide Directly Prevents Neuroinflammation by Targeting SUR1-TRPM4-Mediated NLRP3 Inflammasome Activation In Microglia. Mol Neurobiol 2022; 59:6590-6607. [PMID: 35972671 DOI: 10.1007/s12035-022-02998-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Accepted: 08/07/2022] [Indexed: 10/15/2022]
Abstract
Glibenclamide (GLB) reduces brain edema and improves neurological outcome in animal experiments and preliminary clinical studies. Recent studies also suggested a strong anti-inflammatory effect of GLB, via inhibiting nucleotide-binding oligomerization domain-like receptor containing pyrin domain 3 (NLRP3) inflammasome activation. However, it remains unknown whether the anti-inflammatory effect of GLB is independent of its role in preventing brain edema, and how GLB inhibits the NLRP3 inflammasome is not fully understood. Sprague-Dawley male rats underwent 10-min asphyxial cardiac arrest and cardiopulmonary resuscitation or sham-operation. The Trpm4 siRNA and GLB were injected to block sulfonylurea receptor 1-transient receptor potential M4 (SUR1-TRPM4) channel in rats. Western blotting, quantitative real-time polymerase chain reaction, behavioral analysis, and histological examination were used to evaluate the role of GLB in preventing NLRP3-mediated neuroinflammation through inhibiting SUR1-TRPM4, and corresponding neuroprotective effect. To further explore the underlying mechanism, BV2 cells were subjected to lipopolysaccharides, or oxygen-glucose deprivation/reperfusion. Here, in rat model of cardiac arrest with brain edema combined with neuroinflammation, GLB significantly alleviated neurocognitive deficit and neuropathological damage, via the inhibition of microglial NLRP3 inflammasome activation by blocking SUR1-TRPM4. Of note, the above effects of GLB could be achieved by knockdown of Trpm4. In vitro under circumstance of eliminating distractions from brain edema, SUR1-TRPM4 and NLRP3 inflammasome were also activated in BV2 cells subjected to lipopolysaccharides, or oxygen-glucose deprivation/reperfusion, which could be blocked by GLB or 9-phenanthrol, a TRPM4 inhibitor. Importantly, activation of SUR1-TRPM4 in BV2 cells required the P2X7 receptor-mediated Ca2+ influx, which in turn magnified the K+ efflux via the Na+ influx-driven opening of K+ channels, leading to the NLRP3 inflammasome activation. These findings suggest that GLB has a direct anti-inflammatory neuroprotective effect independent of its role in preventing brain edema, through inhibition of SUR1-TRPM4 which amplifies K+ efflux and promotes NLRP3 inflammasome activation.
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Affiliation(s)
- Yihua He
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou North Avenue 1838#, 510515, Guangzhou, China
| | - Yuan Chang
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou North Avenue 1838#, 510515, Guangzhou, China
| | - Yuqin Peng
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou North Avenue 1838#, 510515, Guangzhou, China
| | - Juan Zhu
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou North Avenue 1838#, 510515, Guangzhou, China
| | - Kewei Liu
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou North Avenue 1838#, 510515, Guangzhou, China
| | - Jiancong Chen
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou North Avenue 1838#, 510515, Guangzhou, China
| | - Yongming Wu
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou North Avenue 1838#, 510515, Guangzhou, China
| | - Zhong Ji
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou North Avenue 1838#, 510515, Guangzhou, China
| | - Zhenzhou Lin
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou North Avenue 1838#, 510515, Guangzhou, China
| | - Shengnan Wang
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou North Avenue 1838#, 510515, Guangzhou, China
| | - Sohan Gupta
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou North Avenue 1838#, 510515, Guangzhou, China
| | - Nailiang Zang
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou North Avenue 1838#, 510515, Guangzhou, China
| | - Suyue Pan
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou North Avenue 1838#, 510515, Guangzhou, China.
| | - Kaibin Huang
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou North Avenue 1838#, 510515, Guangzhou, China.
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Jiang ZF, Wu W, Hu HB, Li ZY, Zhong M, Zhang L. P2X7 receptor as the regulator of T-cell function in intestinal barrier disruption. World J Gastroenterol 2022; 28:5265-5279. [PMID: 36185635 PMCID: PMC9521516 DOI: 10.3748/wjg.v28.i36.5265] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 06/20/2022] [Accepted: 09/01/2022] [Indexed: 02/06/2023] Open
Abstract
The intestinal mucosa is a highly compartmentalized structure that forms a direct barrier between the host intestine and the environment, and its dysfunction could result in a serious disease. As T cells, which are important components of the mucosal immune system, interact with gut microbiota and maintain intestinal homeostasis, they may be involved in the process of intestinal barrier dysfunction. P2X7 receptor (P2X7R), a member of the P2X receptors family, mediates the effects of extracellular adenosine triphosphate and is expressed by most innate or adaptive immune cells, including T cells. Current evidence has demonstrated that P2X7R is involved in inflammation and mediates the survival and differentiation of T lymphocytes, indicating its potential role in the regulation of T cell function. In this review, we summarize the available research about the regulatory role and mechanism of P2X7R on the intestinal mucosa-derived T cells in the setting of intestinal barrier dysfunction.
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Affiliation(s)
- Zhi-Feng Jiang
- Center of Emergency & Intensive Care Unit, Jinshan Hospital of Fudan University, Shanghai 201508, China
| | - Wei Wu
- Department of Critical Care Medicine, Zhongshan Hospital of Fudan University, Shanghai 200032, China
| | - Han-Bing Hu
- Center of Emergency & Intensive Care Unit, Jinshan Hospital of Fudan University, Shanghai 201508, China
| | - Zheng-Yang Li
- Department of Gastroenterology, Jinshan Hospital of Fudan University, Shanghai 201508, China
| | - Ming Zhong
- Department of Critical Care Medicine, Zhongshan Hospital of Fudan University, Shanghai 200032, China
| | - Lin Zhang
- Center of Emergency & Intensive Care Unit, Jinshan Hospital of Fudan University, Shanghai 201508, China
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Wallace HL, Russell RS. Promiscuous Inflammasomes: The False Dichotomy of RNA/DNA Virus-Induced Inflammasome Activation and Pyroptosis. Viruses 2022; 14:2113. [PMID: 36298668 PMCID: PMC9609106 DOI: 10.3390/v14102113] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/16/2022] [Accepted: 09/18/2022] [Indexed: 07/30/2023] Open
Abstract
It is well-known that viruses activate various inflammasomes, which can initiate the programmed cell death pathway known as pyroptosis, subsequently leading to cell lysis and release of inflammatory cytokines IL-1β and IL-18. This pathway can be triggered by various sensors, including, but not limited to, NLRP3, AIM2, IFI16, RIG-I, and NLRC4. Many viruses are known either to activate or inhibit inflammasomes as a part of the innate immune response or as a mechanism of pathogenesis. Early research in the field of virus-induced pyroptosis suggested a dichotomy, with RNA viruses activating the NLRP3 inflammasome and DNA viruses activating the AIM2 inflammasome. More recent research has shown that this dichotomy may not be as distinct as once thought. It seems many viruses activate multiple inflammasome sensors. Here, we detail which viruses fit the dichotomy as well as many that appear to defy this clearly false dichotomy. It seems likely that most, if not all, viruses activate multiple inflammasome sensors, and future research should focus on expanding our understanding of inflammasome activation in a variety of tissue types as well as virus activation of multiple inflammasomes, challenging biases that stemmed from early literature in this field. Here, we review primarily research performed on human viruses but also include details regarding animal viruses whenever possible.
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