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Li LR, Chen L, Sun ZJ. Igniting hope: Harnessing NLRP3 inflammasome-GSDMD-mediated pyroptosis for cancer immunotherapy. Life Sci 2024; 354:122951. [PMID: 39127315 DOI: 10.1016/j.lfs.2024.122951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 07/19/2024] [Accepted: 08/05/2024] [Indexed: 08/12/2024]
Abstract
In the contemporary landscape of oncology, immunotherapy, represented by immune checkpoint blockade (ICB) therapy, stands out as a beacon of innovation in cancer treatment. Despite its promise, the therapy's progression is hindered by suboptimal clinical response rates. Addressing this challenge, the modulation of the NLRP3 inflammasome-GSDMD-mediated pyroptosis pathway holds promise as a means to augment the efficacy of immunotherapy. In the pathway, the NLRP3 inflammasome serves as a pivotal molecular sensor that responds to inflammatory stimuli within the organism. Its activation leads to the release of cytokines interleukin 1β and interleukin 18 through the cleavage of GSDMD, thereby forming membrane pores and potentially resulting in pyroptosis. This cascade of processes exerts a profound impact on tumor development and progression, with its function and expression exhibiting variability across different tumor types and developmental stages. Consequently, understanding the specific roles of the NLRP3 inflammasome and GSDMD-mediated pyroptosis in diverse tumors is imperative for comprehending tumorigenesis and crafting precise therapeutic strategies. This review aims to elucidate the structure and activation mechanisms of the NLRP3 inflammasome, as well as the induction mechanisms of GSDMD-mediated pyroptosis. Additionally, we provide a comprehensive overview of the involvement of this pathway in various cancer types and its applications in tumor immunotherapy, nanotherapy, and other fields. Emphasis is placed on the feasibility of leveraging this approach to enhance ICB therapy within the field of immunotherapy. Furthermore, we discuss the potential applications of this pathway in other immunotherapy methods, such as chimeric antigen receptor T-cell (CAR-T) therapy and tumor vaccines.
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Affiliation(s)
- Ling-Rui Li
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Frontier Science Center for Immunology and Metabolism, Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan, China
| | - Lei Chen
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Frontier Science Center for Immunology and Metabolism, Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan, China.
| | - Zhi-Jun Sun
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Frontier Science Center for Immunology and Metabolism, Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan, China.
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2
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Fu J, Schroder K, Wu H. Mechanistic insights from inflammasome structures. Nat Rev Immunol 2024; 24:518-535. [PMID: 38374299 PMCID: PMC11216901 DOI: 10.1038/s41577-024-00995-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/17/2024] [Indexed: 02/21/2024]
Abstract
Inflammasomes are supramolecular complexes that form in the cytosol in response to pathogen-associated and damage-associated stimuli, as well as other danger signals that perturb cellular homoeostasis, resulting in host defence responses in the form of cytokine release and programmed cell death (pyroptosis). Inflammasome activity is closely associated with numerous human disorders, including rare genetic syndromes of autoinflammation, cardiovascular diseases, neurodegeneration and cancer. In recent years, a range of inflammasome components and their functions have been discovered, contributing to our knowledge of the overall machinery. Here, we review the latest advances in inflammasome biology from the perspective of structural and mechanistic studies. We focus on the most well-studied components of the canonical inflammasome - NAIP-NLRC4, NLRP3, NLRP1, CARD8 and caspase-1 - as well as caspase-4, caspase-5 and caspase-11 of the noncanonical inflammasome, and the inflammasome effectors GSDMD and NINJ1. These structural studies reveal important insights into how inflammasomes are assembled and regulated, and how they elicit the release of IL-1 family cytokines and induce membrane rupture in pyroptosis.
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Affiliation(s)
- Jianing Fu
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA, USA
| | - Kate Schroder
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Queensland, Australia
| | - Hao Wu
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA.
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA, USA.
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Wieske L, Michael MR, In 't Veld SGJG, Visser A, van Schaik IN, Eftimov F, Teunissen CE. Proximity extension assay-based discovery of biomarkers for disease activity in chronic inflammatory demyelinating polyneuropathy. J Neurol Neurosurg Psychiatry 2024; 95:595-604. [PMID: 37879899 DOI: 10.1136/jnnp-2023-332398] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 10/03/2023] [Indexed: 10/27/2023]
Abstract
BACKGROUND Objective disease activity biomarkers are lacking in chronic inflammatory demyelinating polyneuropathy (CIDP), impacting treatment decisions in clinical care and outcomes in clinical trials. Using a proximity extension assay, we aimed to identify candidate serum protein biomarkers for disease activity in CIDP. METHOD We collected clinical data and serum of 106 patients with CIDP. Patients starting induction treatment (n=53) and patients on maintenance treatment starting treatment withdrawal (n=40) were assessed at baseline and at 6 months (or at relapse). Patients in remission (n=13) were assessed once. Clinical disease activity was defined based on improvement or deterioration by the minimal clinically important difference on the inflammatory Rasch-built Overall Disability Scale in combination with either grip strength or the Medical Research Council sum score. Using a proximity extension assay (Olink Explore platform), 1472 protein levels were analysed in serum. Candidate proteins were selected based on fold change>0.5 or <-0.5 and p<0.05 between clinically active and inactive disease. Longitudinal changes of candidate proteins between baseline and follow-up were analysed. RESULTS We identified 48 candidate proteins that differed between clinically active and inactive disease on cross-sectional comparison. Five of these proteins (SUGT1, IRAK4, DCTN1, 5'-nucleotidase cytosolic IIIA (NT5C3A), glutaredoxin (GLRX)) also showed longitudinal changes consistent with disease activity changes. IRAK4 was also identified in a sensitivity analysis, using another definition for disease activity. CONCLUSION Our results indicate that IRAK4 and possibly SUGT1, DCTN1, NT5C3A and GLRX are candidate biomarkers for monitoring clinical disease activity in CIDP.
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Affiliation(s)
- Luuk Wieske
- Department of Neurology and Neurophysiology, Amsterdam Neuroscience, Amsterdam UMC Location AMC, Amsterdam, Noord-Holland, The Netherlands
- Department of Clinical Neurophysiology, Sint Antonius Hospital, Nieuwegein, The Netherlands
| | - Milou R Michael
- Department of Neurology and Neurophysiology, Amsterdam Neuroscience, Amsterdam UMC Location AMC, Amsterdam, Noord-Holland, The Netherlands
| | - Sjors G J G In 't Veld
- Neurochemistry Laboratory, Department of Clinical Chemistry, Amsterdam Neuroscience, Amsterdam UMC Location VUmc, Amsterdam, Noord-Holland, The Netherlands
| | - Allerdien Visser
- Neurochemistry Laboratory, Department of Clinical Chemistry, Amsterdam Neuroscience, Amsterdam UMC Location VUmc, Amsterdam, Noord-Holland, The Netherlands
| | - Ivo N van Schaik
- Department of Neurology and Neurophysiology, Amsterdam Neuroscience, Amsterdam UMC Location AMC, Amsterdam, Noord-Holland, The Netherlands
- Sanquin Bloedvoorziening, Amsterdam, Noord-Holland, The Netherlands
| | - Filip Eftimov
- Department of Neurology and Neurophysiology, Amsterdam Neuroscience, Amsterdam UMC Location AMC, Amsterdam, Noord-Holland, The Netherlands
| | - Charlotte E Teunissen
- Neurochemistry Laboratory, Department of Clinical Chemistry, Amsterdam Neuroscience, Amsterdam UMC Location VUmc, Amsterdam, Noord-Holland, The Netherlands
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Zhang L, Tang Y, Huang P, Luo S, She Z, Peng H, Chen Y, Luo J, Duan W, Xiong J, Liu L, Liu L. Role of NLRP3 inflammasome in central nervous system diseases. Cell Biosci 2024; 14:75. [PMID: 38849934 PMCID: PMC11162045 DOI: 10.1186/s13578-024-01256-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Accepted: 05/28/2024] [Indexed: 06/09/2024] Open
Abstract
The central nervous system (CNS) is the most delicate system in human body, with the most complex structure and function. It is vulnerable to trauma, infection, neurodegeneration and autoimmune diseases, and activates the immune system. An appropriate inflammatory response contributes to defence against invading microbes, whereas an excessive inflammatory response can aggravate tissue damage. The NLRP3 inflammasome was the first one studied in the brain. Once primed and activated, it completes the assembly of inflammasome (sensor NLRP3, adaptor ASC, and effector caspase-1), leading to caspase-1 activation and increased release of downstream inflammatory cytokines, as well as to pyroptosis. Cumulative studies have confirmed that NLRP3 plays an important role in regulating innate immunity and autoimmune diseases, and its inhibitors have shown good efficacy in animal models of various inflammatory diseases. In this review, we will briefly discuss the biological characteristics of NLRP3 inflammasome, summarize the recent advances and clinical impact of the NLRP3 inflammasome in infectious, inflammatory, immune, degenerative, genetic, and vascular diseases of CNS, and discuss the potential and challenges of NLRP3 as a therapeutic target for CNS diseases.
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Affiliation(s)
- Lu Zhang
- Department of Pediatrics, The Second Xiangya Hospital of Central South University, Changsha, 410011, China
- Department of Pediatric Neurology, Children's Medical Center, The Second Xiangya Hospital of Central South University, Changsha, HuChina, 410011, China
| | - Yufen Tang
- Department of Pediatrics, The Second Xiangya Hospital of Central South University, Changsha, 410011, China
- Department of Pediatric Neurology, Children's Medical Center, The Second Xiangya Hospital of Central South University, Changsha, HuChina, 410011, China
| | - Peng Huang
- Department of Pediatrics, The Second Xiangya Hospital of Central South University, Changsha, 410011, China
- Department of Pediatric Neurology, Children's Medical Center, The Second Xiangya Hospital of Central South University, Changsha, HuChina, 410011, China
| | - Senlin Luo
- Department of Pediatrics, The Second Xiangya Hospital of Central South University, Changsha, 410011, China
- Department of Pediatric Neurology, Children's Medical Center, The Second Xiangya Hospital of Central South University, Changsha, HuChina, 410011, China
| | - Zhou She
- Department of Pediatrics, The Second Xiangya Hospital of Central South University, Changsha, 410011, China
- Department of Pediatric Neurology, Children's Medical Center, The Second Xiangya Hospital of Central South University, Changsha, HuChina, 410011, China
| | - Hong Peng
- Department of Pediatrics, The Second Xiangya Hospital of Central South University, Changsha, 410011, China
- Department of Pediatric Neurology, Children's Medical Center, The Second Xiangya Hospital of Central South University, Changsha, HuChina, 410011, China
| | - Yuqiong Chen
- Department of Pediatrics, The Second Xiangya Hospital of Central South University, Changsha, 410011, China
- Department of Pediatric Neurology, Children's Medical Center, The Second Xiangya Hospital of Central South University, Changsha, HuChina, 410011, China
| | - Jinwen Luo
- Department of Pediatrics, The Second Xiangya Hospital of Central South University, Changsha, 410011, China
- Department of Pediatric Neurology, Children's Medical Center, The Second Xiangya Hospital of Central South University, Changsha, HuChina, 410011, China
| | - Wangxin Duan
- Department of Pediatrics, The Second Xiangya Hospital of Central South University, Changsha, 410011, China
| | - Jie Xiong
- Department of Pediatrics, The Second Xiangya Hospital of Central South University, Changsha, 410011, China
- Department of Pediatric Neurology, Children's Medical Center, The Second Xiangya Hospital of Central South University, Changsha, HuChina, 410011, China
| | - Lingjuan Liu
- Department of Pediatrics, The Second Xiangya Hospital of Central South University, Changsha, 410011, China
- Department of Pediatric Neurology, Children's Medical Center, The Second Xiangya Hospital of Central South University, Changsha, HuChina, 410011, China
| | - Liqun Liu
- Department of Pediatrics, The Second Xiangya Hospital of Central South University, Changsha, 410011, China.
- Department of Pediatric Neurology, Children's Medical Center, The Second Xiangya Hospital of Central South University, Changsha, HuChina, 410011, China.
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O'Keefe ME, Dubyak GR, Abbott DW. Post-translational control of NLRP3 inflammasome signaling. J Biol Chem 2024; 300:107386. [PMID: 38763335 PMCID: PMC11245928 DOI: 10.1016/j.jbc.2024.107386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Revised: 04/10/2024] [Accepted: 04/25/2024] [Indexed: 05/21/2024] Open
Abstract
Inflammasomes serve as critical sensors for disruptions to cellular homeostasis, with inflammasome assembly leading to inflammatory caspase activation, gasdermin cleavage, and cytokine release. While the canonical pathways leading to priming, assembly, and pyroptosis are well characterized, recent work has begun to focus on the role of post-translational modifications (PTMs) in regulating inflammasome activity. A diverse array of PTMs, including phosphorylation, ubiquitination, SUMOylation, acetylation, and glycosylation, exert both activating and inhibitory influences on members of the inflammasome cascade through effects on protein-protein interactions, stability, and localization. Dysregulation of inflammasome activation is associated with a number of inflammatory diseases, and evidence is emerging that aberrant modification of inflammasome components contributes to this dysregulation. This review provides insight into PTMs within the NLRP3 inflammasome pathway and their functional consequences on the signaling cascade and highlights outstanding questions that remain regarding the complex web of signals at play.
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Affiliation(s)
- Meghan E O'Keefe
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - George R Dubyak
- Department of Physiology and Biophysics, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Derek W Abbott
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA.
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Raina S, Hübner E, Samuel E, Nagel G, Fuchs H. DT-13 attenuates inflammation by inhibiting NLRP3-inflammasome related genes in RAW264.7 macrophages. Biochem Biophys Res Commun 2024; 708:149763. [PMID: 38503169 DOI: 10.1016/j.bbrc.2024.149763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 03/04/2024] [Accepted: 03/06/2024] [Indexed: 03/21/2024]
Abstract
Plant derived saponins or other glycosides are widely used for their anti-inflammatory, antioxidant, and anti-viral properties in therapeutic medicine. In this study, we focus on understanding the function of the less known steroidal saponin from the roots of Liriope muscari L. H. Bailey - saponin C (also known as DT-13) in lipopolysaccharide (LPS)-stimulated RAW264.7 macrophages in comparison to the well-known saponin ginsenoside Rk1 and anti-inflammatory drug dexamethasone. We proved that DT-13 reduces LPS-induced inflammation by inhibiting nitric oxide (NO) production, interleukin-6 (IL-6) release, cycloxygenase-2 (COX-2), tumour necrosis factor-alpha (TNF-α) gene expression, and nuclear factor kappa-B (NFκB) translocation into the nucleus. It also inhibits the inflammasome component NOD-like receptor family pyrin domain containing protein 3 (NLRP3) regulating the inflammasome activation. This was supported by the significant inhibition of caspase-1 and interleukin-1 beta (IL-1β) expression and release. This study demonstrates the anti-inflammatory effect of saponins on LPS-stimulated macrophages. For the first time, an in vitro study shows the attenuating effect of DT-13 on NLRP3-inflammasome activation. In comparison to the existing anti-inflammatory drug, dexamethasone, and triterpenoid saponin Rk1, DT-13 more efficiently inhibits inflammation in the applied cell culture model. Therefore, DT-13 may serve as a lead compound for the development of new more effective anti-inflammatory drugs with minimised side effects.
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Affiliation(s)
- Shikha Raina
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Diagnostic Laboratory Medicine, Clinical Chemistry and Pathobiochemistry, Augustenburger Platz 1, D-13353, Berlin, Germany
| | - Emely Hübner
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Diagnostic Laboratory Medicine, Clinical Chemistry and Pathobiochemistry, Augustenburger Platz 1, D-13353, Berlin, Germany; Hochschule Bonn-Rhein Sieg, 53359, Rheinbach, Germany; HAN University of Applied Sciences, Groenewoudseweg, 6524, Nijmegen, Netherlands
| | - Esther Samuel
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Diagnostic Laboratory Medicine, Clinical Chemistry and Pathobiochemistry, Augustenburger Platz 1, D-13353, Berlin, Germany
| | - Gregor Nagel
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Diagnostic Laboratory Medicine, Clinical Chemistry and Pathobiochemistry, Augustenburger Platz 1, D-13353, Berlin, Germany
| | - Hendrik Fuchs
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Diagnostic Laboratory Medicine, Clinical Chemistry and Pathobiochemistry, Augustenburger Platz 1, D-13353, Berlin, Germany.
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Marín-Palma D, Tabares-Guevara JH, Taborda N, Rugeles MT, Hernandez JC. Coarse particulate matter (PM10) induce an inflammatory response through the NLRP3 activation. J Inflamm (Lond) 2024; 21:15. [PMID: 38698414 PMCID: PMC11064351 DOI: 10.1186/s12950-024-00388-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 04/25/2024] [Indexed: 05/05/2024] Open
Abstract
INTRODUCTION PM exposure can induce inflammatory and oxidative responses; however, differences in these adverse effects have been reported depending on the chemical composition and size. Moreover, inflammatory mechanisms such as NLRP3 activation by PM10 have yet to be explored. OBJECTIVE To assess the impact of PM10 on cell cytotoxicity and the inflammatory response through in vitro and in vivo models. METHODOLOGY Peripheral blood mononuclear cells (PBMCs) from healthy donors were exposed to PM10. Cytotoxicity was determined using the LDH assay; the expression of inflammasome components and the production of pro-inflammatory cytokines were quantified through qPCR and ELISA, respectively; and the formation of ASC complexes was examined using confocal microscopy. For in vivo analysis, male C57BL6 mice were intranasally challenged with PM10 and bronchoalveolar lavage fluid was collected to determine cell counts and quantification of pro-inflammatory cytokines by ELISA. RNA was extracted from lung tissue, and the gene expression of inflammatory mediators was quantified. RESULTS PM10 exposure induced significant cytotoxicity at concentrations over 100 µg/mL. Moreover, PM10 enhances the gene expression and release of pro-inflammatory cytokines in PBMCs, particularly IL-1β; and induces the formation of ASC complexes in a dose-dependent manner. In vivo, PM10 exposure led to cell recruitment to the lungs, which was characterized by a significant increase in polymorphonuclear cells compared to control animals. Furthermore, PM10 induces the expression of several inflammatory response-related genes, such as NLRP3, IL-1β and IL-18, within lung tissue. CONCLUSION Briefly, PM10 exposure reduced the viability of primary cells and triggered an inflammatory response, involving NLRP3 inflammasome activation and the subsequent production of IL-1β. Moreover, PM10 induces the recruitment of cells to the lung and the expression of multiple cytokines; this phenomenon could contribute to epithelial damage and, thus to the development and exacerbation of respiratory diseases such as viral infections.
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Affiliation(s)
- Damariz Marín-Palma
- Infettare, Facultad de Medicina, Universidad Cooperativa de Colombia, Medellín, Colombia
- Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
| | - Jorge H Tabares-Guevara
- Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
| | - Natalia Taborda
- Grupo de Investigaciones Biomédicas Uniremington, Programa de Medicina, Facultad de Ciencias de la Salud, Corporación Universitaria Remington, Medellín, Colombia
| | - Maria T Rugeles
- Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
| | - Juan C Hernandez
- Infettare, Facultad de Medicina, Universidad Cooperativa de Colombia, Medellín, Colombia.
- Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia.
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Huang P, Zhang Z, Zhang P, Feng J, Xie J, Zheng Y, Liang X, Zhu B, Chen Z, Feng S, Wang L, Lu J, Liu Y, Zhang Y. TREM2 Deficiency Aggravates NLRP3 Inflammasome Activation and Pyroptosis in MPTP-Induced Parkinson's Disease Mice and LPS-Induced BV2 Cells. Mol Neurobiol 2024; 61:2590-2605. [PMID: 37917301 PMCID: PMC11043123 DOI: 10.1007/s12035-023-03713-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 09/22/2023] [Indexed: 11/04/2023]
Abstract
Microglia-mediated neuroinflammation plays a crucial role in the pathogenesis of Parkinson's disease (PD). Triggering receptor expressed on myeloid cells 2 (TREM2) confers strong neuroprotective effects in PD by regulating the phenotype of microglia. Recent studies suggest that TREM2 regulates high glucose-induced microglial inflammation through the NLRP3 signaling pathway. This study aimed to investigate the effect of TREM2 on NLRP3 inflammasome activation and neuroinflammation in PD. Mice were injected with AAV-TREM2-shRNA into both sides of the substantia nigra using a stereotactic injection method, followed by intraperitoneal injection of MPTP to establish chronic PD mouse model. Behavioral assessments including the pole test and rotarod test were conducted to evaluate the effects of TREM2 deficiency on MPTP-induced motor dysfunction. Immunohistochemistry of TREM2 and tyrosine hydroxylase (TH), immunohistochemistry and immunofluorescence Iba1, Western blot of NLRP3 inflammasome and its downstream inflammatory factors IL-1β and IL-18, and the key pyroptosis factors GSDMD and GSDMD-N were performed to explore the effect of TREM2 on NLRP3 inflammasome and neuroinflammation. In an in vitro experiment, lentivirus was used to interfere with the expression of TREM2 in BV2 microglia, and then lipopolysaccharide (LPS) and adenopterin nucleoside triphosphate (ATP) were used to stimulate inflammation to construct a cellular inflammation model. The expression differences of NLRP3 inflammasome and its components were detected by qPCR and Western blot. In vivo, TREM2 knockdown aggravated the loss of dopaminergic neuron and the decline of motor function. After TREM2 knockdown, the number of activated microglia was significantly increased, and the expression of cleaved caspase-1, NLRP3 inflammasome, IL-1β, GSDMD, and GSDMD-N was increased. In vitro, TREM2 knockdown aggravated the inflammatory response of BV2 cells stimulated by LPS and promoted the activation of NLRP3 inflammasome through the NF-κB pathway. In addition, TREM2 knockdown also promoted the expression of TLR4/MyD88, an upstream factor of the NF-κB pathway. Our vivo and vitro data showed that TREM2 knockdown promoted NLRP3 inflammasome activation and downstream inflammatory response, promoted pyroptosis, and aggravated dopaminergic neuron loss. TREM2 acts as an anti-inflammatory in PD through the TLR4/MyD88/NF-κB pathway, which extends previous findings and supports the notion that TREM2 ameliorates neuroinflammation in PD.
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Affiliation(s)
- Peiting Huang
- School of Medicine, South China University of Technology, Guangzhou, 510006, Guangdong Province, China
- Department of Neurology, Guangdong Neuroscience Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, Guangdong Province, China
- Guangzhou Key Laboratory of Diagnosis and Treatment for Neurodegenerative Diseases, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Guangzhou, 510080, China
| | - Zhanyu Zhang
- School of Medicine, South China University of Technology, Guangzhou, 510006, Guangdong Province, China
- Department of Neurology, Guangdong Neuroscience Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, Guangdong Province, China
- Guangzhou Key Laboratory of Diagnosis and Treatment for Neurodegenerative Diseases, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Guangzhou, 510080, China
| | - Piao Zhang
- Department of Neurology, Guangdong Neuroscience Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, Guangdong Province, China
- Guangzhou Key Laboratory of Diagnosis and Treatment for Neurodegenerative Diseases, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Guangzhou, 510080, China
| | - Jiezhu Feng
- School of Medicine, South China University of Technology, Guangzhou, 510006, Guangdong Province, China
- Department of Neurology, Guangdong Neuroscience Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, Guangdong Province, China
- Guangzhou Key Laboratory of Diagnosis and Treatment for Neurodegenerative Diseases, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Guangzhou, 510080, China
| | - Jianwei Xie
- School of Medicine, South China University of Technology, Guangzhou, 510006, Guangdong Province, China
- Department of Neurology, Guangdong Neuroscience Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, Guangdong Province, China
- Guangzhou Key Laboratory of Diagnosis and Treatment for Neurodegenerative Diseases, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Guangzhou, 510080, China
| | - Yinjuan Zheng
- School of Medicine, South China University of Technology, Guangzhou, 510006, Guangdong Province, China
- Department of Neurology, Guangdong Neuroscience Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, Guangdong Province, China
- Guangzhou Key Laboratory of Diagnosis and Treatment for Neurodegenerative Diseases, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Guangzhou, 510080, China
| | - Xiaomei Liang
- Department of Neurology, Guangdong Neuroscience Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, Guangdong Province, China
- Guangzhou Key Laboratory of Diagnosis and Treatment for Neurodegenerative Diseases, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Guangzhou, 510080, China
| | - Baoyu Zhu
- Department of Neurology, Guangdong Neuroscience Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, Guangdong Province, China
- Guangzhou Key Laboratory of Diagnosis and Treatment for Neurodegenerative Diseases, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Guangzhou, 510080, China
| | - Zhenzhen Chen
- Department of Neurology, Guangdong Neuroscience Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, Guangdong Province, China
- Guangzhou Key Laboratory of Diagnosis and Treatment for Neurodegenerative Diseases, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Guangzhou, 510080, China
| | - Shujun Feng
- Department of Neurology, Guangdong Neuroscience Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, Guangdong Province, China
- Guangzhou Key Laboratory of Diagnosis and Treatment for Neurodegenerative Diseases, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Guangzhou, 510080, China
| | - Lijuan Wang
- Department of Neurology, Guangdong Neuroscience Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, Guangdong Province, China
- Guangzhou Key Laboratory of Diagnosis and Treatment for Neurodegenerative Diseases, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Guangzhou, 510080, China
| | - Jiahong Lu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR, China
| | - Yawei Liu
- Department of Neurosurgery & Medical Research Center, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde Foshan), Foshan, Guangdong, China.
| | - Yuhu Zhang
- School of Medicine, South China University of Technology, Guangzhou, 510006, Guangdong Province, China.
- Department of Neurology, Guangdong Neuroscience Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, Guangdong Province, China.
- Guangzhou Key Laboratory of Diagnosis and Treatment for Neurodegenerative Diseases, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Guangzhou, 510080, China.
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Duan Y, Zhu Y, Zhang L, Wang W, Zhang M, Tian J, Li Q, Ai J, Wang R, Xie Z. Activation of the NLRP3 inflammasome by human adenovirus type 7 L4 100-kilodalton protein. Front Immunol 2024; 15:1294898. [PMID: 38660301 PMCID: PMC11041921 DOI: 10.3389/fimmu.2024.1294898] [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: 09/15/2023] [Accepted: 04/03/2024] [Indexed: 04/26/2024] Open
Abstract
Human adenovirus type 7 (HAdV-7) is a significant viral pathogen that causes respiratory infections in children. Currently, there are no specific antiviral drugs or vaccines for children targeting HAdV-7, and the mechanisms of its pathogenesis remain unclear. The NLRP3 inflammasome-driven inflammatory cascade plays a crucial role in the host's antiviral immunity. Our previous study demonstrated that HAdV-7 infection activates the NLRP3 inflammasome. Building upon this finding, our current study has identified the L4 100 kDa protein encoded by HAdV-7 as the primary viral component responsible for NLRP3 inflammasome activation. By utilizing techniques such as co-immunoprecipitation, we have confirmed that the 100 kDa protein interacts with the NLRP3 protein and facilitates the assembly of the NLRP3 inflammasome by binding specifically to the NACHT and LRR domains of NLRP3. These insights offer a deeper understanding of HAdV-7 pathogenesis and contribute to the development of novel antiviral therapies.
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Affiliation(s)
- Yali Duan
- Beijing Key Laboratory of Pediatric Respiratory Infectious Diseases, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, Laboratory of Infection and Virology, Beijing Pediatric Research Institute, Beijing Children’s Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
- Research Unit of Critical Infection in Children, 2019RU016, Chinese Academy of Medical Sciences, Beijing, China
- Department of Infectious Diseases, Beijing Children’s Hospital, Capital Medical University, National Center for Children’s Health, Beijing, China
| | - Yun Zhu
- Beijing Key Laboratory of Pediatric Respiratory Infectious Diseases, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, Laboratory of Infection and Virology, Beijing Pediatric Research Institute, Beijing Children’s Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
- Research Unit of Critical Infection in Children, 2019RU016, Chinese Academy of Medical Sciences, Beijing, China
| | - Linlin Zhang
- Beijing Key Laboratory of Pediatric Respiratory Infectious Diseases, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, Laboratory of Infection and Virology, Beijing Pediatric Research Institute, Beijing Children’s Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
- Research Unit of Critical Infection in Children, 2019RU016, Chinese Academy of Medical Sciences, Beijing, China
| | - Wei Wang
- Beijing Key Laboratory of Pediatric Respiratory Infectious Diseases, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, Laboratory of Infection and Virology, Beijing Pediatric Research Institute, Beijing Children’s Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
- Research Unit of Critical Infection in Children, 2019RU016, Chinese Academy of Medical Sciences, Beijing, China
- Department of Pediatrics, Beijing Jingmei Group General Hospital, Beijing, China
| | - Meng Zhang
- Beijing Key Laboratory of Pediatric Respiratory Infectious Diseases, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, Laboratory of Infection and Virology, Beijing Pediatric Research Institute, Beijing Children’s Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
- Research Unit of Critical Infection in Children, 2019RU016, Chinese Academy of Medical Sciences, Beijing, China
- Department of Pediatric Rehabilitation, Beijing Boai Hospital, School of Rehabilitation Medicine, Capital Medical University, China Rehabilitation Research Center, Beijing, China
| | - Jiao Tian
- Beijing Key Laboratory of Pediatric Respiratory Infectious Diseases, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, Laboratory of Infection and Virology, Beijing Pediatric Research Institute, Beijing Children’s Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
- Research Unit of Critical Infection in Children, 2019RU016, Chinese Academy of Medical Sciences, Beijing, China
| | - Qi Li
- Beijing Key Laboratory of Pediatric Respiratory Infectious Diseases, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, Laboratory of Infection and Virology, Beijing Pediatric Research Institute, Beijing Children’s Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
- Research Unit of Critical Infection in Children, 2019RU016, Chinese Academy of Medical Sciences, Beijing, China
| | - Junhong Ai
- Beijing Key Laboratory of Pediatric Respiratory Infectious Diseases, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, Laboratory of Infection and Virology, Beijing Pediatric Research Institute, Beijing Children’s Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
- Research Unit of Critical Infection in Children, 2019RU016, Chinese Academy of Medical Sciences, Beijing, China
| | - Ran Wang
- Beijing Key Laboratory of Pediatric Respiratory Infectious Diseases, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, Laboratory of Infection and Virology, Beijing Pediatric Research Institute, Beijing Children’s Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
- Research Unit of Critical Infection in Children, 2019RU016, Chinese Academy of Medical Sciences, Beijing, China
| | - Zhengde Xie
- Beijing Key Laboratory of Pediatric Respiratory Infectious Diseases, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, Laboratory of Infection and Virology, Beijing Pediatric Research Institute, Beijing Children’s Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
- Research Unit of Critical Infection in Children, 2019RU016, Chinese Academy of Medical Sciences, Beijing, China
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10
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Gurubaran IS. Mitochondrial damage and clearance in retinal pigment epithelial cells. Acta Ophthalmol 2024; 102 Suppl 282:3-53. [PMID: 38467968 DOI: 10.1111/aos.16661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 01/31/2024] [Indexed: 03/13/2024]
Abstract
Age-related macular degeneration (AMD) is a devastating eye disease that causes permanent vision loss in the central part of the retina, known as the macula. Patients with such severe visual loss face a reduced quality of life and are at a 1.5 times greater risk of death compared to the general population. Currently, there is no cure for or effective treatment for dry AMD. There are several mechanisms thought to underlie the disease, for example, ageing-associated chronic oxidative stress, mitochondrial damage, harmful protein aggregation and inflammation. As a way of gaining a better understanding of the molecular mechanisms behind AMD and thus developing new therapies, we have created a peroxisome proliferator-activated receptor gamma coactivator 1-alpha and nuclear factor erythroid 2-related factor 2 (PGC1α/NFE2L2) double-knockout (dKO) mouse model that mimics many of the clinical features of dry AMD, including elevated levels of oxidative stress markers, damaged mitochondria, accumulating lysosomal lipofuscin and extracellular drusen-like structures in retinal pigment epithelial cells (RPE). In addition, a human RPE cell-based model was established to examine the impact of non-functional intracellular clearance systems on inflammasome activation. In this study, we found that there was a disturbance in the autolysosomal machinery responsible for clearing mitochondria in the RPE cells of one-year-old PGC1α/NFE2L2-deficient mice. The confocal immunohistochemical analysis revealed an increase in autophagosome marker microtubule-associated proteins 1A/1B light chain 3B (LC3B) as well as multiple mitophagy markers such as PTE-induced putative kinase 1 (PINK1) and E3 ubiquitin ligase (PARKIN), along with signs of damaged mitochondria. However, no increase in autolysosome formation was detected, nor was there a colocalization of the lysosomal marker LAMP2 or the mitochondrial marker, ATP synthase β. There was an upregulation of late autolysosomal fusion Ras-related protein (Rab7) in the perinuclear space of RPE cells, together with autofluorescent aggregates. Additionally, we observed an increase in the numbers of Toll-like receptors 3 and 9, while those of NOD-like receptor 3 were decreased in PGC1α/NFE2L2 dKO retinal specimens compared to wild-type animals. There was a trend towards increased complement component C5a and increased involvement of the serine protease enzyme, thrombin, in enhancing the terminal pathway producing C5a, independent of C3. The levels of primary acute phase C-reactive protein and receptor for advanced glycation end products were also increased in the PGC1α/NFE2L2 dKO retina. Furthermore, selective proteasome inhibition with epoxomicin promoted both nicotinamide adenine dinucleotide phosphate (NADPH) oxidase and mitochondrial-mediated oxidative stress, leading to the release of mitochondrial DNA to the cytosol, resulting in potassium efflux-dependent activation of the absent in melanoma 2 (AIM2) inflammasome and the subsequent secretion of interleukin-1β in ARPE-19 cells. In conclusion, the data suggest that there is at least a relative decrease in mitophagy, increases in the amounts of C5 and thrombin and decreased C3 levels in this dry AMD-like model. Moreover, selective proteasome inhibition evoked mitochondrial damage and AIM2 inflammasome activation in ARPE-19 cells.
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Affiliation(s)
- Iswariyaraja Sridevi Gurubaran
- Department of Medicine, Clinical Medicine Unit, University of Eastern Finland Institute of Clinical Medicine, Kuopio, Northern Savonia, Finland
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11
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Li X, Ji LJ, Feng KD, Huang H, Liang MR, Cheng SJ, Meng XD. Emerging role of exosomes in ulcerative colitis: Targeting NOD-like receptor family pyrin domain containing 3 inflammasome. World J Gastroenterol 2024; 30:527-541. [PMID: 38463022 PMCID: PMC10921143 DOI: 10.3748/wjg.v30.i6.527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 11/21/2023] [Accepted: 01/09/2024] [Indexed: 02/05/2024] Open
Abstract
Ulcerative colitis (UC) is a chronic recurrent inflammatory bowel disease. Despite ongoing advances in our understanding of UC, its pathogenesis is yet unelucidated, underscoring the urgent need for novel treatment strategies for patients with UC. Exosomes are nanoscale membrane particles that mediate intercellular communication by carrying various bioactive molecules, such as proteins, RNAs, DNA, and metabolites. The NOD-like receptor family pyrin domain containing 3 (NLRP3) inflammasome is a cytosolic tripartite protein complex whose activation induces the maturation and secretion of proinflammatory cytokines interleukin-1β (IL-1β) and IL-18, triggering the inflammatory response to a pathogenic agent or injury. Growing evidence suggests that exosomes are new modulators of the NLRP3 inflammasome, with vital roles in the pathological process of UC. Here, recent evidence is reviewed on the role of exosomes and NLRP3 inflammasome in UC. First, the dual role of exosomes on NLRP3 inflammasome and the effect of NLRP3 inflammasome on exosome secretion are summarized. Finally, an outlook on the directions of exosome-NLRP3 inflammasome crosstalk research in the context of UC is proposed and areas of further research on this topic are highlighted.
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Affiliation(s)
- Xin Li
- School of Basic Medicine, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, Guizhou Province, China
| | - Li-Jiang Ji
- Department of Anorectal Surgery, Changshu Hospital Affiliated to Nanjing University of Chinese Medicine, Changshu 215500, Jiangsu Province, China
| | - Kai-Di Feng
- College of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Hua Huang
- Department of Anorectal Surgery, Changshu Hospital Affiliated to Nanjing University of Chinese Medicine, Changshu 215500, Jiangsu Province, China
| | - Mei-Rou Liang
- College of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Shi-Jin Cheng
- College of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Xiu-Dong Meng
- School of Basic Medicine, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, Guizhou Province, China
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12
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Huang J, Li W. Molecular crosstalk between circadian clock and NLRP3 inflammasome signaling in Parkinson's disease. Heliyon 2024; 10:e24752. [PMID: 38268831 PMCID: PMC10803942 DOI: 10.1016/j.heliyon.2024.e24752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 12/12/2023] [Accepted: 01/12/2024] [Indexed: 01/26/2024] Open
Abstract
Parkinson's disease (PD) is one of the most common neurodegenerative diseases. Research has recently found that both animal models and patients with PD have circadian dysfunction, accompanied by abnormal expression of circadian genes and proteins, which implies that the circadian clock plays a crucial role in PD etiopathogenesis. In addition, a strong relationship between NLRP3 inflammasome signaling and PD has been observed. Meanwhile, the activation of the NLRP3 inflammasome is highly relevant to dysfunctions of the molecular clock. Therefore, alleviating the neuroinflammation caused by NLRP3 inflammasome signaling by adjusting the abnormal molecular clock may be a potential strategy for preventing and treating PD. In this article, we have reviewed the potential or direct relationship between abnormalities of the circadian clock and NLRP3 inflammasome signaling in PD.
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Affiliation(s)
- Jiahua Huang
- Laboratory of Neuropathology and Neuropharmacology, Department of Neurology, Shanghai Public Health Clinical Center, Fudan University, 201500, Shanghai, China
- Institute of Neurology, Institutes of Integrative Medicine, Fudan University, 201500, Shanghai, China
| | - Wenwei Li
- Laboratory of Neuropathology and Neuropharmacology, Department of Neurology, Shanghai Public Health Clinical Center, Fudan University, 201500, Shanghai, China
- Institute of Neurology, Institutes of Integrative Medicine, Fudan University, 201500, Shanghai, China
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13
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More M, Chatterjee S, Saha P, Bose D, Trivedi A, Roy S, Chatterjee S. Host microbiome associated low intestinal acetate correlates with progressive NLRP3-dependent hepatic-immunotoxicity in early life microcystin-LR exposure. BMC Pharmacol Toxicol 2023; 24:78. [PMID: 38093299 PMCID: PMC10720243 DOI: 10.1186/s40360-023-00721-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 12/05/2023] [Indexed: 12/17/2023] Open
Abstract
BACKGROUND Microcystins (MCs), potent hepatotoxins pose a significant health risk to humans, particularly children, who are more vulnerable due to higher water intake and increased exposure during recreational activities. METHODS Here, we investigated the role of host microbiome-linked acetate in modulating inflammation caused by early-life exposure to the cyanotoxin Microcystin-LR (MC-LR) in a juvenile mice model. RESULTS Our study revealed that early-life MC-LR exposure disrupted the gut microbiome, leading to a depletion of key acetate-producing bacteria and decreased luminal acetate concentration. Consequently, the dysbiosis hindered the establishment of a gut homeostatic microenvironment and disrupted gut barrier function. The NOD-like receptor family pyrin domain - containing 3 (NLRP3) inflammasome, a key player in MC-induced hepatoxicity emerged as a central player in this process, with acetate supplementation effectively preventing NLRP3 inflammasome activation, attenuating hepatic inflammation, and decreasing pro-inflammatory cytokine production. To elucidate the mechanism underlying the association between early-life MC-LR exposure and the progression of metabolic dysfunction associated steatotic liver disease (MASLD), we investigated the role of acetate binding to its receptor -G-protein coupled receptor 43 (GPR43) on NLRP3 inflammasome activation. Our results demonstrated that acetate-GPR43 signaling was crucial for decreasing NLRP3 protein levels and inhibiting NLRP3 inflammasome assembly. Further, acetate-induced decrease in NLRP3 protein levels was likely mediated through proteasomal degradation rather than autophagy. Overall, our findings underscore the significance of a healthy gut microbiome and its metabolites, particularly acetate, in the progression of hepatotoxicity induced by early life toxin exposure, crucial for MASLD progression. CONCLUSIONS This study highlights potential therapeutic targets in gut dysbiosis and NLRP3 inflammasome activation for mitigating toxin-associated inflammatory liver diseases.
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Affiliation(s)
- Madhura More
- Environmental Health and Disease Laboratory, Department of Environmental and Occupational Health, Program in Public Health, University of California - Irvine, 92697, Irvine, CA, USA
| | | | - Punnag Saha
- Environmental Health and Disease Laboratory, Department of Environmental and Occupational Health, Program in Public Health, University of California - Irvine, 92697, Irvine, CA, USA
| | - Dipro Bose
- Environmental Health and Disease Laboratory, Department of Environmental and Occupational Health, Program in Public Health, University of California - Irvine, 92697, Irvine, CA, USA
| | - Ayushi Trivedi
- Environmental Health and Disease Laboratory, Department of Environmental and Occupational Health, Program in Public Health, University of California - Irvine, 92697, Irvine, CA, USA
| | - Subhajit Roy
- Environmental Health and Disease Laboratory, Department of Environmental and Occupational Health, Program in Public Health, University of California - Irvine, 92697, Irvine, CA, USA
| | - Saurabh Chatterjee
- Environmental Health and Disease Laboratory, Department of Environmental and Occupational Health, Program in Public Health, University of California - Irvine, 92697, Irvine, CA, USA.
- Toxicology Core, NIEHS Center for Oceans and Human Health on Climate Change Interactions, Department of Environmental and Occupational Health, Program in Public Health, University of California - Irvine, 92697, Irvine, CA, USA.
- Division of Infectious Disease, Department of Medicine, UCI School of Medicine, University of California - Irvine, 92697, Irvine, CA, USA.
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14
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Ramalingam V. NLRP3 inhibitors: Unleashing their therapeutic potential against inflammatory diseases. Biochem Pharmacol 2023; 218:115915. [PMID: 37949323 DOI: 10.1016/j.bcp.2023.115915] [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: 07/23/2023] [Revised: 11/04/2023] [Accepted: 11/07/2023] [Indexed: 11/12/2023]
Abstract
The NOD-like receptor pyrin domain-containing protein 3 (NLRP3) inflammasome has been linked to the release of pro-inflammatory cytokines and is essential for innate defence against infection and danger signals. These secreted cytokines improve the inflammatory response caused by tissue damage and associated inflammation. Consequently, the development of NLRP3 inflammasome inhibitors are viable option for the treatment of diverse inflammatory disorders. The significant anti-inflammatory effects of the NLRP3 inhibitors have severe side effects. Hence, the application of NLRP3 inhibitors against inflammatory disease has not yet been understood and most of the developed inhibitors are unsuccessful in clinical trials. The processes behind the NLRP3 complex, priming, and activation are the main emphasis of this review, which also covers therapeutical inhibitors of the NLRP3 inflammasome and potential therapeutic strategies for directing the NLRP3 inflammasome towards clinical development.
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Affiliation(s)
- Vaikundamoorthy Ramalingam
- Department of Natural Products and Medicinal Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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15
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Xu Y, Yang Y, Chen X, Jiang D, Zhang F, Guo Y, Hu B, Xu G, Peng S, Wu L, Hu J. NLRP3 inflammasome in cognitive impairment and pharmacological properties of its inhibitors. Transl Neurodegener 2023; 12:49. [PMID: 37915104 PMCID: PMC10621314 DOI: 10.1186/s40035-023-00381-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 10/09/2023] [Indexed: 11/03/2023] Open
Abstract
Cognitive impairment is a multifactorial and multi-step pathological process that places a heavy burden on patients and the society. Neuroinflammation is one of the main factors leading to cognitive impairment. The inflammasomes are multi-protein complexes that respond to various microorganisms and endogenous danger signals, helping to initiate innate protective responses in inflammatory diseases. NLRP3 inflammasomes produce proinflammatory cytokines (interleukin IL-1β and IL-18) by activating caspase-1. In this review, we comprehensively describe the structure and functions of the NLRP3 inflammasome. We also explore the intrinsic relationship between the NLRP3 inflammasome and cognitive impairment, which involves immune cell activation, cell apoptosis, oxidative stress, mitochondrial autophagy, and neuroinflammation. Finally, we describe NLRP3 inflammasome antagonists as targeted therapies to improve cognitive impairment.
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Affiliation(s)
- Yi Xu
- The Second Affiliated Hospital of Nanchang University, Department of the Second Clinical Medical College of Nanchang University, Nanchang, 330006, China
| | - Yanling Yang
- The Second Affiliated Hospital of Nanchang University, Department of the Second Clinical Medical College of Nanchang University, Nanchang, 330006, China
| | - Xi Chen
- Department of Emergency Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Danling Jiang
- Department of Ultrasound Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Fei Zhang
- Department of Emergency Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Yao Guo
- Department of Emergency Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Bin Hu
- Department of Emergency Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Guohai Xu
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Shengliang Peng
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China.
| | - Lidong Wu
- Department of Emergency Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China.
| | - Jialing Hu
- Department of Emergency Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China.
- Department of Thyroid and Hernia Surgery, The First Affiliated Hospital of Gannan Medical University, Ganzhou, 341000, China.
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16
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Ho LC, Chen YH, Wu TY, Kao LZ, Hung SY, Liou HH, Chen PC, Tsai PJ, Lin HK, Lee YC, Wang HH, Tsai YS. Phosphate burden induces vascular calcification through a NLRP3-caspase-1-mediated pyroptotic pathway. Life Sci 2023; 332:122123. [PMID: 37742736 DOI: 10.1016/j.lfs.2023.122123] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 09/01/2023] [Accepted: 09/21/2023] [Indexed: 09/26/2023]
Abstract
AIMS The aim of this study is to clarify the role of NLRP3 inflammasome in phosphate burden-induced vascular smooth muscle cell (VSMC) calcification. MAIN METHODS VSMC calcification was induced using a high concentration of inorganic phosphate. After pharmacological inhibition or genetic silencing of the NLRP3 inflammasome, pyroptosis, or potassium efflux, the cells were examined by RT-qPCR, immunofluorescence, and western blotting to identify the NLRP3-mediated pathway for VSMC calcification. KEY FINDINGS Calcified VSMCs with α-smooth muscle actin (α-SMA) disarray presented features of pyroptosis, including caspase-1 maturation, cleaved gasdermin D (GSDMD), and a high supernatant level of lactate dehydrogenase A. Pharmacological inhibitions of caspase-1 and pyroptosis attenuated VSMC calcification, whereas interleukin-1β receptor antagonism did not. Unlike canonical NLRP3 activation, osteogenic VSMCs did not upregulate NLRP3 expression. However, NLRP3 genetic silencing or inhibitions, which targets different domains of the NLRP3 protein, could ameliorate VSMC calcification by aborting caspase-1 and GSDMD activation. Furthermore, potassium efflux through the inward-rectifier potassium channel, and not through the P2X7 receptor, triggered NLRP3 inflammasome activation and VSMC calcification. SIGNIFICANCE In the present study, we identified a potassium efflux-triggered NLRP3-caspase-1-mediated pyroptotic pathway for VSMC calcification that is unique and different from the canonical NLRP3 inflammasome activation. Therefore, targeting this pathway may serve as a novel therapeutic strategy for vascular calcification.
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Affiliation(s)
- Li-Chun Ho
- School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan; Division of General Medicine, Department of Internal Medicine, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan.
| | - Yu-Hsin Chen
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ting-Yun Wu
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ling-Zhen Kao
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Shih-Yuan Hung
- Division of Nephrology, Department of Internal Medicine, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan
| | - Hung-Hsiang Liou
- Division of Nephrology, Department of Internal Medicine, Hsin-Jen Hospital, New Taipei City, Taiwan
| | - Pei-Chun Chen
- Department of Physiology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Pei-Jane Tsai
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Department of Cancer Biology, Wake Forest Baptist Medical Center, Wake Forest University, Winston Salem, NC, USA
| | - Hui-Kuan Lin
- Department of Cancer Biology, Wake Forest Baptist Medical Center, Wake Forest University, Winston Salem, NC, USA
| | - Yi-Che Lee
- School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan
| | - Hsi-Hao Wang
- Division of Nephrology, Department of Internal Medicine, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan
| | - Yau-Sheng Tsai
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Department of Cancer Biology, Wake Forest Baptist Medical Center, Wake Forest University, Winston Salem, NC, USA; Clinical Medicine Research Center, National Cheng Kung University Hospital, Tainan, Taiwan.
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17
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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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18
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Dai Y, Zhou J, Shi C. Inflammasome: structure, biological functions, and therapeutic targets. MedComm (Beijing) 2023; 4:e391. [PMID: 37817895 PMCID: PMC10560975 DOI: 10.1002/mco2.391] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 08/25/2023] [Accepted: 08/29/2023] [Indexed: 10/12/2023] Open
Abstract
Inflammasomes are a group of protein complex located in cytoplasm and assemble in response to a wide variety of pathogen-associated molecule patterns, damage-associated molecule patterns, and cellular stress. Generally, the activation of inflammasomes will lead to maturation of proinflammatory cytokines and pyroptotic cell death, both associated with inflammatory cascade amplification. A sensor protein, an adaptor, and a procaspase protein interact through their functional domains and compose one subunit of inflammasome complex. Under physiological conditions, inflammasome functions against pathogen infection and endogenous dangers including mtROS, mtDNA, and so on, while dysregulation of its activation can lead to unwanted results. In recent years, advances have been made to clarify the mechanisms of inflammasome activation, the structural details of them and their functions (negative/positive) in multiple disease models in both animal models and human. The wide range of the stimuli makes the function of inflammasome diverse and complex. Here, we review the structure, biological functions, and therapeutic targets of inflammasomes, while highlight NLRP3, NLRC4, and AIM2 inflammasomes, which are the most well studied. In conclusion, this review focuses on the activation process, biological functions, and structure of the most well-studied inflammasomes, summarizing and predicting approaches for disease treatment and prevention with inflammasome as a target. We aim to provide fresh insight into new solutions to the challenges in this field.
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Affiliation(s)
- Yali Dai
- Institute of Rocket Force MedicineState Key Laboratory of Trauma and Chemical PoisoningArmy Medical UniversityChongqingChina
| | - Jing Zhou
- Institute of Rocket Force MedicineState Key Laboratory of Trauma and Chemical PoisoningArmy Medical UniversityChongqingChina
- Institute of ImmunologyArmy Medical UniversityChongqingChina
| | - Chunmeng Shi
- Institute of Rocket Force MedicineState Key Laboratory of Trauma and Chemical PoisoningArmy Medical UniversityChongqingChina
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19
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Abstract
The immune system of multicellular organisms protects them from harmful microbes. To establish an infection in the face of host immune responses, pathogens must evolve specific strategies to target immune defense mechanisms. One such defense is the formation of intracellular protein complexes, termed inflammasomes, that are triggered by the detection of microbial components and the disruption of homeostatic processes that occur during bacterial infection. Formation of active inflammasomes initiates programmed cell death pathways via activation of inflammatory caspases and cleavage of target proteins. Inflammasome-activated cell death pathways such as pyroptosis lead to proinflammatory responses that protect the host. Bacterial infection has the capacity to influence inflammasomes in two distinct ways: activation and perturbation. In this review, we discuss how bacterial activities influence inflammasomes, and we discuss the consequences of inflammasome activation or evasion for both the host and pathogen.
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Affiliation(s)
- Beatrice I Herrmann
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; ,
- Cell and Molecular Biology Graduate Group, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - James P Grayczyk
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; ,
- Current affiliation: Oncology Discovery, Abbvie, Inc., Chicago, Illinois, USA;
| | - Igor E Brodsky
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; ,
- Cell and Molecular Biology Graduate Group, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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20
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Chen M, Yu S, Gao Y, Li J, Wang X, Wei B, Meng G. TRAF6-TAK1-IKKβ pathway mediates TLR2 agonists activating "one-step" NLRP3 inflammasome in human monocytes. Cytokine 2023; 169:156302. [PMID: 37480791 DOI: 10.1016/j.cyto.2023.156302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 06/30/2023] [Accepted: 07/11/2023] [Indexed: 07/24/2023]
Abstract
Gram-positive bacterial infection causes high morbidity and mortality worldwide, while the underlying mechanism for host sensing bacterial components and initiating immune responses remains elusive. The NLRP3 inflammasome is a cytosolic multi-protein complex sensing a broad spectrum of endogenous danger signals and environmental irritants. In contrast to canonical NLRP3 inflammasome activation that needs both priming and activation signals, Lipopolysaccharide (LPS) from gram-negative bacteria activates the "one-step" NLRP3 inflammasome in human monocytes, which relies on the TLR4-TRIF-Caspase-8 signaling. Here, we show that in human monocytes, TLR2 agonists such as heat-killed gram-positive bacteria, peptidoglycan (PGN) or synthetic bacterial lipoprotein analog Pam3CysSerLys4 (Pam3CSK4) are able to induce the "one-step" NLRP3 inflammasome activation. Using genetic targeting and pharmacological inhibition approaches, it was found that TLR2 propagates signal through TRAF6, TAK1 and IKKβ, ultimately activated NLRP3 independent of RelA. In addition, IKKβ interacts with NLRP3 directly and affects NLRP3 inflammasome activation. These results reveal the signaling cascade downstream of TLR2 upon sensing gram-positive bacterial infection and activating the "one-step" NLRP3 inflammasome in human monocytes, which provides clue for controlling gram-positive bacterial infection-related inflammation.
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Affiliation(s)
- Mengdan Chen
- The Center for Microbes, Development and Health, CAS Key Laboratory of Molecular Virology & Immunology, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Shi Yu
- The Center for Microbes, Development and Health, CAS Key Laboratory of Molecular Virology & Immunology, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Yuhui Gao
- The Center for Microbes, Development and Health, CAS Key Laboratory of Molecular Virology & Immunology, University of Chinese Academy of Sciences, Shanghai 200031, China; School of Life Sciences, Shanghai University, Shanghai 200444, China
| | - Jiaxun Li
- The Center for Microbes, Development and Health, CAS Key Laboratory of Molecular Virology & Immunology, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Xun Wang
- Shanghai Blood Center, Shanghai 200051, China
| | - Bin Wei
- School of Life Sciences, Shanghai University, Shanghai 200444, China
| | - Guangxun Meng
- The Center for Microbes, Development and Health, CAS Key Laboratory of Molecular Virology & Immunology, University of Chinese Academy of Sciences, Shanghai 200031, China; Pasteurien College, Soochow University, Suzhou, Jiangsu 215006, China; Nanjing Advanced Academy of Life and Health, Nanjing, Jiangsu 211135, China.
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21
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Banerjee S, Park T, Kim YS, Kim HY. Exacerbating effects of single-dose acute ethanol exposure on neuroinflammation and amelioration by GPR110 (ADGRF1) activation. J Neuroinflammation 2023; 20:187. [PMID: 37580715 PMCID: PMC10426059 DOI: 10.1186/s12974-023-02868-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 08/02/2023] [Indexed: 08/16/2023] Open
Abstract
BACKGROUND Neuroinflammation is a widely studied phenomenon underlying various neurodegenerative diseases. Earlier study demonstrated that pharmacological activation of GPR110 in both central and peripheral immune cells cooperatively ameliorates neuroinflammation caused by systemic lipopolysaccharide (LPS) administration. Ethanol consumption has been associated with exacerbation of neurodegenerative and systemic inflammatory conditions. The goal of this study is to determine the effects of single-dose acute ethanol exposure and GPR110 activation on the neuro-inflammation mechanisms. METHODS For in vivo studies, GPR110 wild type (WT) and knockout (KO) mice at 10-12 weeks of age were given an oral gavage of ethanol (3 g/kg) or maltose (5.4 g/kg) at 1-4 h prior to the injection of LPS (1 mg/kg, i.p.) followed by the GPR110 ligand, synaptamide (5 mg/kg). After 2-24 h, brains were collected for the analysis of gene expression by RT-PCR or protein expression by western blotting and enzyme-linked immunosorbent assay (ELISA). Microglial activation was assessed by western blotting and immunohistochemistry. For in vitro studies, microglia and peritoneal macrophages were isolated from adult WT mice and treated with 25 mM ethanol for 4 h and then with LPS (100 ng/ml) followed by 10 nM synaptamide for 2 h for gene expression and 12 h for protein analysis. RESULTS Single-dose exposure to ethanol by gavage before LPS injection upregulated pro-inflammatory cytokine expression in the brain and plasma. The LPS-induced Iba-1 expression in the brain was significantly higher after ethanol pretreatment in both WT and GPR110KO mice. GPR110 ligand decreased the mRNA and/or protein expression of these cytokines and Iba-1 in the WT but not in GPR110KO mice. In the isolated microglia and peritoneal macrophages, ethanol also exacerbated the LPS-induced expression of pro-inflammatory cytokines which was mitigated at least partially by synaptamide. The expression of an inflammasome marker NLRP3 upregulated by LPS was further elevated with prior exposure to ethanol, especially in the brains of GPR110KO mice. Both ethanol and LPS reduced adenylate cyclase 8 mRNA expression which was reversed by the activation of GPR110. PDE4B expression at both mRNA and protein level in the brain increased after ethanol and LPS treatment while synaptamide suppressed its expression in a GPR110-dependent manner. CONCLUSION Single-dose ethanol exposure exacerbated LPS-induced inflammatory responses. The GPR110 ligand synaptamide ameliorated this effect of ethanol by counteracting on the cAMP system, the common target for synaptamide and ethanol, and by regulating NLRP3 inflammasome.
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Affiliation(s)
- Sharmistha Banerjee
- Laboratory of Molecular Signaling, National Institute on Alcohol Abuse and Alcoholism, 5625 Fishers Lane, Rockville, MD, 20852, USA
| | - Taeyeop Park
- Laboratory of Molecular Signaling, National Institute on Alcohol Abuse and Alcoholism, 5625 Fishers Lane, Rockville, MD, 20852, USA
| | - Yoo Sun Kim
- Laboratory of Molecular Signaling, National Institute on Alcohol Abuse and Alcoholism, 5625 Fishers Lane, Rockville, MD, 20852, USA
| | - Hee-Yong Kim
- Laboratory of Molecular Signaling, National Institute on Alcohol Abuse and Alcoholism, 5625 Fishers Lane, Rockville, MD, 20852, USA.
- National Institutes of Health, 5625 Fishers Lane, Rm. 3N-07, Bethesda, MD, 20892-9410, USA.
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22
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Vegivinti CTR, Keesari PR, Veeraballi S, Martins Maia CMP, Mehta AK, Lavu RR, Thakur RK, Tella SH, Patel R, Kakumani VK, Pulakurthi YS, Aluri S, Aggarwal RK, Ramachandra N, Zhao R, Sahu S, Shastri A, Verma A. Role of innate immunological/inflammatory pathways in myelodysplastic syndromes and AML: a narrative review. Exp Hematol Oncol 2023; 12:60. [PMID: 37422676 DOI: 10.1186/s40164-023-00422-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Accepted: 06/22/2023] [Indexed: 07/10/2023] Open
Abstract
Dysregulation of the innate immune system and inflammatory-related pathways has been implicated in hematopoietic defects in the bone marrow microenvironment and associated with aging, clonal hematopoiesis, myelodysplastic syndromes (MDS), and acute myeloid leukemia (AML). As the innate immune system and its pathway regulators have been implicated in the pathogenesis of MDS/AML, novel approaches targeting these pathways have shown promising results. Variability in expression of Toll like receptors (TLRs), abnormal levels of MyD88 and subsequent activation of NF-κβ, dysregulated IL1-receptor associated kinases (IRAK), alterations in TGF-β and SMAD signaling, high levels of S100A8/A9 have all been implicated in pathogenesis of MDS/AML. In this review we not only discuss the interplay of various innate immune pathways in MDS pathogenesis but also focus on potential therapeutic targets from recent clinical trials including the use of monoclonal antibodies and small molecule inhibitors against these pathways.
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Affiliation(s)
- Charan Thej Reddy Vegivinti
- Department of Medicine, Jacobi Medical Center/Albert Einstein College of Medicine, Bronx, NY, 10461, US
- Department of Oncology, Albert Einstein College of Medicine, Bronx, NY, 10461, US
| | | | | | | | - Ansh Krishnachandra Mehta
- Department of Oncology, Albert Einstein College of Medicine, Bronx, NY, 10461, US
- Department of Hematology and Oncology, Jacobi Medical Center/ Albert Einstein College of Medicine, Bronx, NY, 10461, US
| | - Rohit Reddy Lavu
- Department of Oncology, Yashoda hospitals, Hyderabad, 500036, India
| | - Rahul Kumar Thakur
- Department of Medicine, Jacobi Medical Center/Albert Einstein College of Medicine, Bronx, NY, 10461, US
- Department of Oncology, Albert Einstein College of Medicine, Bronx, NY, 10461, US
| | - Sri Harsha Tella
- Department of Medical Oncology, Mayo Clinic, Rochester, MN, 55905, US
| | - Riya Patel
- Department of Hematology and Oncology, University of Buffalo - Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14203, US
| | | | | | - Srinivas Aluri
- Department of Oncology, Albert Einstein College of Medicine, Bronx, NY, 10461, US
| | | | - Nandini Ramachandra
- Department of Oncology, Albert Einstein College of Medicine, Bronx, NY, 10461, US
| | - Rongbao Zhao
- Department of Oncology, Albert Einstein College of Medicine, Bronx, NY, 10461, US
| | - Srabani Sahu
- Department of Oncology, Albert Einstein College of Medicine, Bronx, NY, 10461, US
| | - Aditi Shastri
- Department of Oncology, Albert Einstein College of Medicine, Bronx, NY, 10461, US
- Department of Oncology, Blood Cancer Institute, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY, 10461, US
| | - Amit Verma
- Department of Oncology, Albert Einstein College of Medicine, Bronx, NY, 10461, US.
- Department of Oncology, Blood Cancer Institute, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY, 10461, US.
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23
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Kinsella RL, Kimmey JM, Smirnov A, Woodson R, Gaggioli MR, Chavez SM, Kreamalmeyer D, Stallings CL. Autophagy prevents early proinflammatory responses and neutrophil recruitment during Mycobacterium tuberculosis infection without affecting pathogen burden in macrophages. PLoS Biol 2023; 21:e3002159. [PMID: 37319285 DOI: 10.1371/journal.pbio.3002159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 05/11/2023] [Indexed: 06/17/2023] Open
Abstract
The immune response to Mycobacterium tuberculosis infection determines tuberculosis disease outcomes, yet we have an incomplete understanding of what immune factors contribute to a protective immune response. Neutrophilic inflammation has been associated with poor disease prognosis in humans and in animal models during M. tuberculosis infection and, therefore, must be tightly regulated. ATG5 is an essential autophagy protein that is required in innate immune cells to control neutrophil-dominated inflammation and promote survival during M. tuberculosis infection; however, the mechanistic basis for how ATG5 regulates neutrophil recruitment is unknown. To interrogate what innate immune cells require ATG5 to control neutrophil recruitment during M. tuberculosis infection, we used different mouse strains that conditionally delete Atg5 in specific cell types. We found that ATG5 is required in CD11c+ cells (lung macrophages and dendritic cells) to control the production of proinflammatory cytokines and chemokines during M. tuberculosis infection, which would otherwise promote neutrophil recruitment. This role for ATG5 is autophagy dependent, but independent of mitophagy, LC3-associated phagocytosis, and inflammasome activation, which are the most well-characterized ways that autophagy proteins regulate inflammation. In addition to the increased proinflammatory cytokine production from macrophages during M. tuberculosis infection, loss of ATG5 in innate immune cells also results in an early induction of TH17 responses. Despite prior published in vitro cell culture experiments supporting a role for autophagy in controlling M. tuberculosis replication in macrophages, the effects of autophagy on inflammatory responses occur without changes in M. tuberculosis burden in macrophages. These findings reveal new roles for autophagy proteins in lung resident macrophages and dendritic cells that are required to suppress inflammatory responses that are associated with poor control of M. tuberculosis infection.
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Affiliation(s)
- Rachel L Kinsella
- Department of Molecular Microbiology, Center for Women's Infectious Disease Research, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Jacqueline M Kimmey
- Department of Molecular Microbiology, Center for Women's Infectious Disease Research, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Asya Smirnov
- Department of Molecular Microbiology, Center for Women's Infectious Disease Research, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Reilly Woodson
- Department of Molecular Microbiology, Center for Women's Infectious Disease Research, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Margaret R Gaggioli
- Department of Molecular Microbiology, Center for Women's Infectious Disease Research, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Sthefany M Chavez
- Department of Molecular Microbiology, Center for Women's Infectious Disease Research, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Darren Kreamalmeyer
- Department of Molecular Microbiology, Center for Women's Infectious Disease Research, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Christina L Stallings
- Department of Molecular Microbiology, Center for Women's Infectious Disease Research, Washington University School of Medicine, St. Louis, Missouri, United States of America
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24
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Wang M, Yu F, Chang W, Zhang Y, Zhang L, Li P. Inflammasomes: a rising star on the horizon of COVID-19 pathophysiology. Front Immunol 2023; 14:1185233. [PMID: 37251383 PMCID: PMC10213254 DOI: 10.3389/fimmu.2023.1185233] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 05/02/2023] [Indexed: 05/31/2023] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a contagious respiratory virus that is the cause of the coronavirus disease 2019 (COVID-19) pandemic which has posed a serious threat to public health. COVID-19 is characterized by a wide spectrum of clinical manifestations, ranging from asymptomatic infection to mild cold-like symptoms, severe pneumonia or even death. Inflammasomes are supramolecular signaling platforms that assemble in response to danger or microbial signals. Upon activation, inflammasomes mediate innate immune defense by favoring the release of proinflammatory cytokines and triggering pyroptotic cell death. Nevertheless, abnormalities in inflammasome functioning can result in a variety of human diseases such as autoimmune disorders and cancer. A growing body of evidence has showed that SARS-CoV-2 infection can induce inflammasome assembly. Dysregulated inflammasome activation and consequent cytokine burst have been associated with COVID-19 severity, alluding to the implication of inflammasomes in COVID-19 pathophysiology. Accordingly, an improved understanding of inflammasome-mediated inflammatory cascades in COVID-19 is essential to uncover the immunological mechanisms of COVID-19 pathology and identify effective therapeutic approaches for this devastating disease. In this review, we summarize the most recent findings on the interplay between SARS-CoV-2 and inflammasomes and the contribution of activated inflammasomes to COVID-19 progression. We dissect the mechanisms involving the inflammasome machinery in COVID-19 immunopathogenesis. In addition, we provide an overview of inflammasome-targeted therapies or antagonists that have potential clinical utility in COVID-19 treatment.
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Affiliation(s)
- Man Wang
- *Correspondence: Man Wang, ; Peifeng Li,
| | | | | | | | | | - Peifeng Li
- *Correspondence: Man Wang, ; Peifeng Li,
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25
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Devi S, Indramohan M, Jäger E, Carriere J, Chu LH, de Almeida L, Greaves DR, Stehlik C, Dorfleutner A. CARD-only proteins regulate in vivo inflammasome responses and ameliorate gout. Cell Rep 2023; 42:112265. [PMID: 36930645 PMCID: PMC10151391 DOI: 10.1016/j.celrep.2023.112265] [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: 04/15/2022] [Revised: 01/10/2023] [Accepted: 02/28/2023] [Indexed: 03/18/2023] Open
Abstract
Inflammatory responses are crucial for controlling infections and initiating tissue repair. However, excessive and uncontrolled inflammation causes inflammatory disease. Processing and release of the pro-inflammatory cytokines interleukin-1β (IL-1β) and IL-18 depend on caspase-1 activation within inflammasomes. Assembly of inflammasomes is initiated upon activation of cytosolic pattern recognition receptors (PRRs), followed by sequential polymerization of pyrin domain (PYD)-containing and caspase recruitment domain (CARD)-containing proteins mediated by homotypic PYD and CARD interactions. Small PYD- or CARD-only proteins (POPs and COPs, respectively) evolved in higher primates to target these crucial interactions to limit inflammation. Here, we show the ability of COPs to regulate inflammasome activation by modulating homotypic CARD-CARD interactions in vitro and in vivo. CARD16, CARD17, and CARD18 displace crucial CARD interactions between caspase-1 proteins through competitive binding and ameliorate uric acid crystal-mediated NLRP3 inflammasome activation and inflammatory disease. COPs therefore represent an important family of inflammasome regulators and ameliorate inflammatory disease.
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Affiliation(s)
- Savita Devi
- Department of Academic Pathology, Cedars Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Mohanalaxmi Indramohan
- Department of Academic Pathology, Cedars Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Elisabeth Jäger
- Department of Academic Pathology, Cedars Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Jessica Carriere
- Department of Academic Pathology, Cedars Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Lan H Chu
- Division of Rheumatology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; Driskill Graduate Program in Life Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Lucia de Almeida
- Division of Rheumatology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - David R Greaves
- Sir William Dunn School of Pathology, University of Oxford, Oxford OX1 3RE, UK
| | - Christian Stehlik
- Department of Academic Pathology, Cedars Sinai Medical Center, Los Angeles, CA 90048, USA; Department of Biomedical Sciences, Cedars Sinai Medical Center, Los Angeles, CA 90048, USA; Samuel Oschin Comprehensive Cancer Institute, Cedars Sinai Medical Center, Los Angeles, CA 90048, USA; The Kao Autoimmunity Institute, Cedars Sinai Medical Center, Los Angeles, CA 90048, USA.
| | - Andrea Dorfleutner
- Department of Academic Pathology, Cedars Sinai Medical Center, Los Angeles, CA 90048, USA; Department of Biomedical Sciences, Cedars Sinai Medical Center, Los Angeles, CA 90048, USA; The Kao Autoimmunity Institute, Cedars Sinai Medical Center, Los Angeles, CA 90048, USA.
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Dobrev D, Heijman J, Hiram R, Li N, Nattel S. Inflammatory signalling in atrial cardiomyocytes: a novel unifying principle in atrial fibrillation pathophysiology. Nat Rev Cardiol 2023; 20:145-167. [PMID: 36109633 PMCID: PMC9477170 DOI: 10.1038/s41569-022-00759-w] [Citation(s) in RCA: 79] [Impact Index Per Article: 79.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/26/2022] [Indexed: 02/08/2023]
Abstract
Inflammation has been implicated in atrial fibrillation (AF), a very common and clinically significant cardiac rhythm disturbance, but its precise role remains poorly understood. Work performed over the past 5 years suggests that atrial cardiomyocytes have inflammatory signalling machinery - in particular, components of the NLRP3 (NACHT-, LRR- and pyrin domain-containing 3) inflammasome - that is activated in animal models and patients with AF. Furthermore, work in animal models suggests that NLRP3 inflammasome activation in atrial cardiomyocytes might be a sufficient and necessary condition for AF occurrence. In this Review, we evaluate the evidence for the role and pathophysiological significance of cardiomyocyte NLRP3 signalling in AF. We first summarize the evidence for a role of inflammation in AF and review the biochemical properties of the NLRP3 inflammasome, as defined primarily in studies of classic inflammation. We then briefly consider the broader evidence for a role of inflammatory signalling in heart disease, particularly conditions that predispose individuals to develop AF. We provide a detailed discussion of the available information about atrial cardiomyocyte NLRP3 inflammasome signalling in AF and related conditions and evaluate the possibility that similar signalling might be important in non-myocyte cardiac cells. We then review the evidence on the role of active resolution of inflammation and its potential importance in suppressing AF-related inflammatory signalling. Finally, we consider the therapeutic potential and broader implications of this new knowledge and highlight crucial questions to be addressed in future research.
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Affiliation(s)
- Dobromir Dobrev
- Institute of Pharmacology, West German Heart and Vascular Center, University Duisburg-Essen, Duisburg, Germany
- Department of Medicine and Research Center, Montreal Heart Institute and Université de Montréal, Montréal, Canada
- Department of Molecular Physiology & Biophysics, Baylor College of Medicine, Houston, TX, USA
| | - Jordi Heijman
- Department of Cardiology, Cardiovascular Research Institute Maastricht, Faculty of Health, Medicine, and Life Sciences, Maastricht University, Maastricht, Netherlands
| | - Roddy Hiram
- Department of Medicine and Research Center, Montreal Heart Institute and Université de Montréal, Montréal, Canada
| | - Na Li
- Department of Molecular Physiology & Biophysics, Baylor College of Medicine, Houston, TX, USA
- Department of Medicine, Section of Cardiovascular Research, Baylor College of Medicine, Houston, TX, USA
- Cardiovascular Research Institute, Baylor College of Medicine, Houston, TX, USA
| | - Stanley Nattel
- Institute of Pharmacology, West German Heart and Vascular Center, University Duisburg-Essen, Duisburg, Germany.
- Department of Medicine and Research Center, Montreal Heart Institute and Université de Montréal, Montréal, Canada.
- IHU LIRYC and Fondation Bordeaux Université, Bordeaux, France.
- Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec, Canada.
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27
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Plitt T, Faith JJ. Seminars in immunology special issue: Nutrition, microbiota and immunity The unexplored microbes in health and disease. Semin Immunol 2023; 66:101735. [PMID: 36857892 PMCID: PMC10049858 DOI: 10.1016/j.smim.2023.101735] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 01/17/2023] [Accepted: 02/09/2023] [Indexed: 03/03/2023]
Abstract
Functional characterization of the microbiome's influence on host physiology has been dominated by a few characteristic example strains that have been studied in detail. However, the extensive development of methods for high-throughput bacterial isolation and culture over the past decade is enabling functional characterization of the broader microbiota that may impact human health. Characterizing the understudied majority of human microbes and expanding our functional understanding of the diversity of the gut microbiota could enable new insights into diseases with unknown etiology, provide disease-predictive microbiome signatures, and advance microbial therapeutics. We summarize high-throughput culture-dependent platforms for characterizing bacterial strain function and host-interactions. We elaborate on the importance of these technologies in facilitating mechanistic studies of previously unexplored microbes, highlight new opportunities for large-scale in vitro screens of host-relevant microbial functions, and discuss the potential translational applications for microbiome science.
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Affiliation(s)
- Tamar Plitt
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Jeremiah J Faith
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
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Shahi A, Afzali S, Firoozi Z, Mohaghegh P, Moravej A, Hosseinipour A, Bahmanyar M, Mansoori Y. Potential roles of NLRP3 inflammasome in the pathogenesis of Kawasaki disease. J Cell Physiol 2023; 238:513-532. [PMID: 36649375 DOI: 10.1002/jcp.30948] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 12/12/2022] [Accepted: 01/05/2023] [Indexed: 01/19/2023]
Abstract
There is a heterogeneous group of rare illnesses that fall into the vasculitis category and are characterized mostly by blood vessel inflammation. Ischemia and disrupted blood flow will cause harm to the organs whose blood arteries become inflamed. Kawasaki disease (KD) is the most prevalent kind of vasculitis in children aged 5 years or younger. Because KD's cardiovascular problems might persist into adulthood, it is no longer thought of as a self-limiting disease. KD is a systemic vasculitis with unknown initiating factors. Numerous factors, such as genetic predisposition and infectious pathogens, are implicated in the etiology of KD. As endothelial cell damage and inflammation can lead to coronary endothelial dysfunction in KD, some studies hypothesized the crucial role of pyroptosis in the pathogenesis of KD. Additionally, pyroptosis-related proteins like caspase-1, apoptosis-associated speck-like protein containing a CARD (ASC), proinflammatory cytokines like IL-1 and IL-18, lactic dehydrogenase, and Gasdermin D (GSDMD) have been found to be overexpressed in KD patients when compared to healthy controls. These occurrences may point to an involvement of inflammasomes and pyroptotic cell death in the etiology of KD and suggest potential treatment targets. Based on these shreds of evidence, in this review, we aim to focus on one of the well-defined inflammasomes, NLRP3, and its role in the pathophysiology of KD.
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Affiliation(s)
- Abbas Shahi
- Noncommunicable Diseases Research Center, Fasa University of Medical Sciences, Fasa, Iran
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Shima Afzali
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Zahra Firoozi
- Noncommunicable Diseases Research Center, Fasa University of Medical Sciences, Fasa, Iran
- Department of Medical Genetics, Fasa University of Medical Sciences, Fasa, Iran
| | - Poopak Mohaghegh
- Pediatrics Department, School of Medicine, Fasa University of Medical Sciences, Fasa, Iran
| | - Ali Moravej
- Department of Immunology, Fasa University of Medical Sciences, Fasa, Iran
| | - Ali Hosseinipour
- Department of Internal Medicine, Fasa University of Medical Sciences, Fasa, Iran
| | - Maryam Bahmanyar
- Pediatrics Department, School of Medicine, Fasa University of Medical Sciences, Fasa, Iran
| | - Yaser Mansoori
- Noncommunicable Diseases Research Center, Fasa University of Medical Sciences, Fasa, Iran
- Department of Medical Genetics, Fasa University of Medical Sciences, Fasa, Iran
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Upregulation of TLR4-Dependent ATP Production Is Critical for Glaesserella parasuis LPS-Mediated Inflammation. Cells 2023; 12:cells12050751. [PMID: 36899887 PMCID: PMC10001010 DOI: 10.3390/cells12050751] [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: 01/01/2023] [Revised: 02/15/2023] [Accepted: 02/24/2023] [Indexed: 03/02/2023] Open
Abstract
Glaesserella parasuis (G. parasuis), an important pathogenic bacterium, cause Glässer's disease, and has resulted in tremendous economic losses to the global swine industry. G. parasuis infection causes typical acute systemic inflammation. However, the molecular details of how the host modulates the acute inflammatory response induced by G. parasuis are largely unknown. In this study, we found that G. parasuis LZ and LPS both enhanced the mortality of PAM cells, and at the same time, the level of ATP was enhanced. LPS treatment significantly increased the expressions of IL-1β, P2X7R, NLRP3, NF-κB, p-NF-κB, and GSDMD, leading to pyroptosis. Furthermore, these proteins' expression was enhanced following extracellular ATP further stimulation. When reduced the production of P2X7R, NF-κB-NLRP3-GSDMS inflammasome signaling pathway was inhibited, and the mortality of cells was reduced. MCC950 treatment repressed the formation of inflammasome and reduced mortality. Further exploration found that the knockdown of TLR4 significantly reduced ATP content and cell mortality, and inhibited the expression of p-NF-κB and NLRP3. These findings suggested upregulation of TLR4-dependent ATP production is critical for G. parasuis LPS-mediated inflammation, provided new insights into the molecular pathways underlying the inflammatory response induced by G. parasuis, and offered a fresh perspective on therapeutic strategies.
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Pereira M, Gazzinelli RT. Regulation of innate immune signaling by IRAK proteins. Front Immunol 2023; 14:1133354. [PMID: 36865541 PMCID: PMC9972678 DOI: 10.3389/fimmu.2023.1133354] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 01/30/2023] [Indexed: 02/16/2023] Open
Abstract
The Toll-like receptors (TLRs) and interleukin-1 receptors (IL-1R) families are of paramount importance in coordinating the early immune response to pathogens. Signaling via most TLRs and IL-1Rs is mediated by the protein myeloid differentiation primary-response protein 88 (MyD88). This signaling adaptor forms the scaffold of the myddosome, a molecular platform that employs IL-1R-associated kinase (IRAK) proteins as main players for transducing signals. These kinases are essential in controlling gene transcription by regulating myddosome assembly, stability, activity and disassembly. Additionally, IRAKs play key roles in other biologically relevant responses such as inflammasome formation and immunometabolism. Here, we summarize some of the key aspects of IRAK biology in innate immunity.
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Affiliation(s)
- Milton Pereira
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, United States,*Correspondence: Milton Pereira, ; Ricardo T. Gazzinelli,
| | - Ricardo T. Gazzinelli
- Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, United States,Centro de Tecnologia de Vacinas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil,Instituto René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, MG, Brazil,Plataforma de Medicina Translacional, Fundação Oswaldo Cruz, Ribeirão Preto, SP, Brazil,*Correspondence: Milton Pereira, ; Ricardo T. Gazzinelli,
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31
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Wang Y, Pei S, Liu Z, Ding Y, Qian T, Wen H, Hsu SW, Zhou Z, Zhang J, Wang H. IRAK-M suppresses the activation of microglial NLRP3 inflammasome and GSDMD-mediated pyroptosis through inhibiting IRAK1 phosphorylation during experimental autoimmune encephalomyelitis. Cell Death Dis 2023; 14:103. [PMID: 36765034 PMCID: PMC9918485 DOI: 10.1038/s41419-023-05621-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 01/19/2023] [Accepted: 01/25/2023] [Indexed: 02/12/2023]
Abstract
The activation of the NOD-like receptor family pyrin domain-containing protein 3 (NLRP3) inflammasome triggers pyroptosis proinflammatory cell death in experimental autoimmune encephalomyelitis (EAE). However, the underlying mechanisms of the inflammatory processes of microglia in EAE remain unclear. Our previous studies suggested that interleukin-1 receptor-associated kinase (IRAK)-M down-regulates the toll-like receptor 4/interleukin-1 receptor signaling pathway. Here, we used IRAK-M knockout (IRAK-M-/-) mice and their microglia to dissect the role of IRAK-M in EAE. We found that deletion of IRAK-M increased the incidence rate and exacerbated the clinical symptoms in EAE mice. We then found that IRAK-M deficiency promoted the activation of microglia, activated NLRP3 inflammasomes, and enhanced GSDMD-mediated pyroptosis in the microglia of EAE. In contrast, over-expression of IRAK-M exerted inhibitory effects on neuroinflammation, NLRP3 activation, and pyroptosis. Moreover, IRAK-M deficiency enhanced the phosphorylation of IRAK1, while IRAK-M over-expression downregulated the level of phosphorylated IRAK1. Finally, we found upregulated binding of IRAK1 and TNF receptor-associated factor 6 (TRAF6) in IRAK-M-/- EAE mice compared to WT mice, which was blocked in AAVIRAK-M EAE mice. Our study reveals a complex signaling network of IRAK-M, which negatively regulates microglial NLRP3 inflammasomes and pyroptosis by inhibiting IRAK1 phosphorylation during EAE. These findings suggest a potential target for the novel therapeutic approaches of multiple sclerosis (MS)/EAE and NLRP3-related inflammatory diseases.
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Affiliation(s)
- Yuanyuan Wang
- Department of Neurology, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, 510180, Guangzhou, China
| | - Shanshan Pei
- Department of Neurology, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China
| | - Zhuhe Liu
- Department of Neurology, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, 510180, Guangzhou, China
| | - Yuewen Ding
- Department of Neurology, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China
| | - Tinglin Qian
- Department of Neurology, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China
| | - Haixia Wen
- Department of Neurology, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, 510180, Guangzhou, China
| | - Ssu-Wei Hsu
- Department of Internal Medicine, University of California at Davis, Davis, CA, 95616, USA
| | - Zheyi Zhou
- Department of Neurology, Hospital of Liuzhou Traditional Chinese Medicine, 545001, Liuzhou, China.
| | - Jun Zhang
- Department of Internal Medicine, University of California at Davis, Davis, CA, 95616, USA.
- Comprehensive Cancer Center, University of California at Davis, Davis, CA, 95616, USA.
| | - Honghao Wang
- Department of Neurology, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, 510180, Guangzhou, China.
- Department of Neurology, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China.
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32
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Zhu P, Ke ZR, Chen JX, Li SJ, Ma TL, Fan XL. Advances in mechanism and regulation of PANoptosis: Prospects in disease treatment. Front Immunol 2023; 14:1120034. [PMID: 36845112 PMCID: PMC9948402 DOI: 10.3389/fimmu.2023.1120034] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 01/31/2023] [Indexed: 02/11/2023] Open
Abstract
PANoptosis, a new research hotspot at the moment, is a cell death pattern in which pyroptosis, apoptosis, and necroptosis all occur in the same cell population. In essence, PANoptosis is a highly coordinated and dynamically balanced programmed inflammatory cell death pathway that combines the main features of pyroptosis, apoptosis, and necroptosis. Many variables, such as infection, injury, or self-defect, may be involved in the occurrence of PANoptosis, with the assembly and activation of the PANoptosome being the most critical. PANoptosis has been linked to the development of multiple systemic diseases in the human body, including infectious diseases, cancer, neurodegenerative diseases, and inflammatory diseases. Therefore, it is necessary to clarify the process of occurrence, the regulatory mechanism of PANoptosis, and its relation to diseases. In this paper, we summarized the differences and relations between PANoptosis and the three types of programmed cell death, and emphatically expounded molecular mechanism and regulatory patterns of PANoptosis, with the expectation of facilitating the application of PANoptosis regulation in disease treatment.
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Affiliation(s)
- Peng Zhu
- XiangYa School of Medicine, Central South University, Changsha, Hunan, China
| | - Zhuo-Ran Ke
- XiangYa School of Medicine, Central South University, Changsha, Hunan, China
| | - Jing-Xian Chen
- XiangYa School of Medicine, Central South University, Changsha, Hunan, China
| | - Shi-Jin Li
- School of Anesthesiology, Guizhou Medical University, Guiyang, Guizhou, China
| | - Tian-Liang Ma
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiao-Lei Fan
- Department of Orthopedics, Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
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33
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Schmacke NA, O'Duill F, Gaidt MM, Szymanska I, Kamper JM, Schmid-Burgk JL, Mädler SC, Mackens-Kiani T, Kozaki T, Chauhan D, Nagl D, Stafford CA, Harz H, Fröhlich AL, Pinci F, Ginhoux F, Beckmann R, Mann M, Leonhardt H, Hornung V. IKKβ primes inflammasome formation by recruiting NLRP3 to the trans-Golgi network. Immunity 2022; 55:2271-2284.e7. [PMID: 36384135 PMCID: PMC7614333 DOI: 10.1016/j.immuni.2022.10.021] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 07/17/2022] [Accepted: 10/26/2022] [Indexed: 11/17/2022]
Abstract
The NLRP3 inflammasome plays a central role in antimicrobial defense as well as in the context of sterile inflammatory conditions. NLRP3 activity is governed by two independent signals: the first signal primes NLRP3, rendering it responsive to the second signal, which then triggers inflammasome formation. Our understanding of how NLRP3 priming contributes to inflammasome activation remains limited. Here, we show that IKKβ, a kinase activated during priming, induces recruitment of NLRP3 to phosphatidylinositol-4-phosphate (PI4P), a phospholipid enriched on the trans-Golgi network. NEK7, a mitotic spindle kinase that had previously been thought to be indispensable for NLRP3 activation, was redundant for inflammasome formation when IKKβ recruited NLRP3 to PI4P. Studying iPSC-derived human macrophages revealed that the IKKβ-mediated NEK7-independent pathway constitutes the predominant NLRP3 priming mechanism in human myeloid cells. Our results suggest that PI4P binding represents a primed state into which NLRP3 is brought by IKKβ activity.
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Affiliation(s)
- Niklas A Schmacke
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, 81377 Munich, Germany
| | - Fionan O'Duill
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, 81377 Munich, Germany
| | - Moritz M Gaidt
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, 81377 Munich, Germany
| | - Inga Szymanska
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, 81377 Munich, Germany
| | - Julia M Kamper
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, 81377 Munich, Germany
| | - Jonathan L Schmid-Burgk
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, 81377 Munich, Germany
| | - Sophia C Mädler
- Department of Proteomics and Signal Transduction, Max Planck Institute of Biochemistry, 82152 Martinsried, Germany
| | - Timur Mackens-Kiani
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, 81377 Munich, Germany
| | - Tatsuya Kozaki
- Singapore Immunology Network (SIgN), Agency for Science, Technology & Research (A∗STAR), 8A Biomedical Grove, Immunos Building #3-4, Biopolis, Singapore 138648, Singapore
| | - Dhruv Chauhan
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, 81377 Munich, Germany
| | - Dennis Nagl
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, 81377 Munich, Germany
| | - Che A Stafford
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, 81377 Munich, Germany
| | - Hartmann Harz
- Faculty of Biology, Human Biology and BioImaging, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - Adrian L Fröhlich
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, 81377 Munich, Germany
| | - Francesca Pinci
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, 81377 Munich, Germany
| | - Florent Ginhoux
- Singapore Immunology Network (SIgN), Agency for Science, Technology & Research (A∗STAR), 8A Biomedical Grove, Immunos Building #3-4, Biopolis, Singapore 138648, Singapore; Shanghai Institute of Immunology, Shanghai JiaoTong University School of Medicine, 280 South Chongqing Road, Shanghai 200025, China; Translational Immunology Institute, SingHealth Duke-NUS Academic Medical Centre, Singapore 169856, Singapore
| | - Roland Beckmann
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, 81377 Munich, Germany
| | - Matthias Mann
- Department of Proteomics and Signal Transduction, Max Planck Institute of Biochemistry, 82152 Martinsried, Germany
| | - Heinrich Leonhardt
- Faculty of Biology, Human Biology and BioImaging, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - Veit Hornung
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, 81377 Munich, Germany.
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UBE2L3 Reduces TRIM21 Expression and IL-1β Secretion in Epidermal Keratinocytes and Improves Psoriasis-Like Skin. J Invest Dermatol 2022; 143:822-831.e4. [PMID: 36502938 DOI: 10.1016/j.jid.2022.10.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 10/24/2022] [Accepted: 10/26/2022] [Indexed: 12/13/2022]
Abstract
Proinflammatory cytokines, such as IL-1β, are important mediators of psoriasis. UBE2L3, an E2 enzyme, is thought to be an indirect target of IL-1β secretion by binding to ubiquitin ligases such as TRIM21. However, its role in psoriasis remains unknown. In this study, we found that UBE2L3 expression was decreased in psoriatic epidermis, whereas caspase 1 and IL-1β signaling were strongly activated. When normal human epidermal keratinocytes were stimulated with nigericin, adenosine triphosphate, and poly(dA:dT), downregulation of UBE2L3 and increased secretion of IL-1β were observed. Treatment with a caspase 1 inhibitor reversed the decrease in the level of UBE2L3. In addition, UBE2L3 overexpression reduced TRIM21, decreased signal transducer and activator of transcription 3 pathway activity, and reduced the level of the IL-1β precursor (pro‒IL-1β). Consistently, silencing UBE2L3 enhanced TRIM21 expression, signal transducer and activator of transcription 3 activation, and pro‒IL-1β production. Finally, in an imiquimod-induced mouse model, UBE2L3 reduction and caspase 1 activation were localized in the epidermis, whereas overexpression of UBE2L3 ameliorated psoriasis-like lesions and reduced pro‒IL-1β and mature IL-1β levels in the epidermis. Thus, UBE2L3 may be a protective biomarker that regulates IL-1β and inhibits TRIM21 in the epidermis of psoriasis.
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Paerewijck O, Lamkanfi M. The human inflammasomes. Mol Aspects Med 2022; 88:101100. [PMID: 35696786 DOI: 10.1016/j.mam.2022.101100] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 05/25/2022] [Accepted: 06/01/2022] [Indexed: 12/14/2022]
Abstract
Two decades of inflammasome research has led to a vast body of knowledge on the complex regulatory mechanisms and pathological roles of canonical and non-canonical inflammasome activation in a plethora of research models of primarily rodent origin. More recently, the field has made notable progress in characterizing human-specific inflammasomes and their regulation mechanisms, including an expansion of inflammasome biology to adaptive immune cells. These exciting developments in basic research have been accompanied by potentially transformative results from large clinical trials and translational efforts to develop inflammasome-targeted small molecule inhibitors for therapeutic use. Here, we will discuss recent findings in the field with a specific emphasis on activation mechanisms of human inflammasomes and their potential role in auto-inflammatory, metabolic and neoplastic diseases.
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Affiliation(s)
- Oonagh Paerewijck
- Laboratory of Medical Immunology, Department of Internal Medicine and Paediatrics, Ghent University, Ghent, B-9000, Belgium
| | - Mohamed Lamkanfi
- Laboratory of Medical Immunology, Department of Internal Medicine and Paediatrics, Ghent University, Ghent, B-9000, Belgium.
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36
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Xu L, Zhou Y, Xu J, Xu X, Lu G, Lv Q, Wei L, Deng X, Shen X, Feng H, Wang J. Anti-inflammatory, antioxidant and anti-virulence roles of atractylodin in attenuating Listeria monocytogenes infection. Front Immunol 2022; 13:977051. [PMID: 36389842 PMCID: PMC9651212 DOI: 10.3389/fimmu.2022.977051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 08/18/2022] [Indexed: 11/26/2022] Open
Abstract
Background Listeria monocytogenes (L. monocytogenes), as a pandemic foodborne pathogen, severely threatens food security and public health care worldwide, which evolves multiple bacterial virulence factors (such as listeriolysin O, LLO) for manipulating the immune response of L. monocytogenes-host interactions. Methods Hemolysis assay was employed to screen a potential LLO inhibitor and the underlying mechanisms were investigated using molecular dynamics (MD) simulation and oligomerization assay. The effects of candidates on immune response were examined by qRT-PCR and immunoblotting analysis. Histological analysis, ELISA assay and biochemistry detection were conducted to assess in vivo efficacy of candidates. Results In the present study, natural terpenoid atractylodin was characterized as an alternative drug candidate for the treatment of L. monocytogenes by the regulation of LLO function and host Nrf2/NLRP3 signaling pathway. Notably, in vivo infection model by L. monocytogenes also highlighted that atractylodin treatment provided effective therapeutic benefits, as evidenced by decreased bacterial burden and diminished inflammation. Congruently, the survival rate of L. monocytogenes-infection mice increased significantly from 10.0% to 40.0% by atractylodin treatment. Conclusion Collectively, our study showed for the first time that atractylodin has tremendous potential to attenuate L. monocytogenes pathogenicity by blocking LLO pore formation and mediating the suppression of inflammation and oxidative stress, providing a promising therapeutic strategy and broadening the applications of atractylodin against L. monocytogenes infection.
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Affiliation(s)
- Lei Xu
- Department of Respiratory Medicine, Center for Pathogen Biology and Infectious Diseases, Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, The First Hospital of Jilin University, Changchun, China
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Yonglin Zhou
- Department of Respiratory Medicine, Center for Pathogen Biology and Infectious Diseases, Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, The First Hospital of Jilin University, Changchun, China
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Jingwen Xu
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Xiangzhu Xu
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Gejin Lu
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Qianghua Lv
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Lijuan Wei
- Hebei Veterinary Medicine Technology Innovation Center, Shijiazhuang, China
| | - Xuming Deng
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Xue Shen
- Department of Food Science, College of Food Science and Engineering, Jilin University, Changchun, China
| | - Haihua Feng
- Department of Respiratory Medicine, Center for Pathogen Biology and Infectious Diseases, Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, The First Hospital of Jilin University, Changchun, China
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
- *Correspondence: Jianfeng Wang, ; Haihua Feng,
| | - Jianfeng Wang
- Department of Respiratory Medicine, Center for Pathogen Biology and Infectious Diseases, Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, The First Hospital of Jilin University, Changchun, China
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
- *Correspondence: Jianfeng Wang, ; Haihua Feng,
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Asare Y, Shnipova M, Živković L, Schlegl C, Tosato F, Aronova A, Brandhofer M, Strohm L, Beaufort N, Malik R, Weber C, Bernhagen J, Dichgans M. IKKβ binds NLRP3 providing a shortcut to inflammasome activation for rapid immune responses. Signal Transduct Target Ther 2022; 7:355. [PMID: 36257930 PMCID: PMC9579124 DOI: 10.1038/s41392-022-01189-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 08/22/2022] [Accepted: 09/07/2022] [Indexed: 11/12/2022] Open
Affiliation(s)
- Yaw Asare
- Institute for Stroke and Dementia Research (ISD), University Hospital, Ludwig-Maximilians-University (LMU), Munich, Germany.
| | - Margarita Shnipova
- Institute for Stroke and Dementia Research (ISD), University Hospital, Ludwig-Maximilians-University (LMU), Munich, Germany
| | - Luka Živković
- Institute for Stroke and Dementia Research (ISD), University Hospital, Ludwig-Maximilians-University (LMU), Munich, Germany
| | - Christina Schlegl
- Institute for Stroke and Dementia Research (ISD), University Hospital, Ludwig-Maximilians-University (LMU), Munich, Germany
| | - Federica Tosato
- Institute for Stroke and Dementia Research (ISD), University Hospital, Ludwig-Maximilians-University (LMU), Munich, Germany
| | - Arailym Aronova
- Institute for Stroke and Dementia Research (ISD), University Hospital, Ludwig-Maximilians-University (LMU), Munich, Germany
| | - Markus Brandhofer
- Institute for Stroke and Dementia Research (ISD), University Hospital, Ludwig-Maximilians-University (LMU), Munich, Germany
| | - Laura Strohm
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Nathalie Beaufort
- Institute for Stroke and Dementia Research (ISD), University Hospital, Ludwig-Maximilians-University (LMU), Munich, Germany
| | - Rainer Malik
- Institute for Stroke and Dementia Research (ISD), University Hospital, Ludwig-Maximilians-University (LMU), Munich, Germany
| | - Christian Weber
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany.,Institute for Cardiovascular Prevention (IPEK), LMU, Munich, Germany
| | - Jürgen Bernhagen
- Institute for Stroke and Dementia Research (ISD), University Hospital, Ludwig-Maximilians-University (LMU), Munich, Germany.,Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Martin Dichgans
- Institute for Stroke and Dementia Research (ISD), University Hospital, Ludwig-Maximilians-University (LMU), Munich, Germany. .,Munich Cluster for Systems Neurology (SyNergy), Munich, Germany.
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Guan Y, Gu Y, Li H, Liang B, Han C, Zhang Y, Liu Q, Wei W, Ma Y. NLRP3 inflammasome activation mechanism and its role in autoimmune liver disease. Acta Biochim Biophys Sin (Shanghai) 2022; 54:1577-1586. [PMID: 36148948 PMCID: PMC9828325 DOI: 10.3724/abbs.2022137] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
The NLRP3 inflammasome is a multiprotein binding compound comprising NLRP3, connector protein ASC, and effector protein pro-caspase-1. When the NLRP3 inflammasome senses a danger signal from the host or pathogen, activated caspase-1 cleaves the precursors of interleukin (IL)-1β and IL-18 into mature proinflammatory cytokines, simultaneously causing lysis via the pore-forming protein gasdermin D. This induction of cell inflammatory pyroptosis suggests that it is a key process in the innate immune response to pathogens or cellular stress. Recent studies have shown that NLRP3 inflammasome also plays an important role in regulating autoimmune liver diseases, including autoimmune hepatitis, primary biliary cholangitis, and primary sclerosclerotic cholangitis. In this review, we summarize the structure, activation and modulation of the NLRP3 inflammasome, highlight the progress in research on the role of NLRP3 inflammasome in the occurrence and development of autoimmune liver diseases, and discuss potential strategies for targeting the NLRP3 inflammasome in the treatment of autoimmune liver diseases.
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Affiliation(s)
- Yanling Guan
- Institute of Clinical PharmacologyAnhui Medical UniversityKey Laboratory of Anti-inflammatory and Immune MedicineMinistry of EducationAnhui Collaborative Innovation Center of Anti-inflammatory and Immune MedicineCenter of Rheumatoid Arthritis of Anhui Medical UniversityHefei230032China
| | - Yiyue Gu
- Department of Cardiologythe First People’s Hospital of XuzhouXuzhou221000China
| | - Hao Li
- Institute of Clinical PharmacologyAnhui Medical UniversityKey Laboratory of Anti-inflammatory and Immune MedicineMinistry of EducationAnhui Collaborative Innovation Center of Anti-inflammatory and Immune MedicineCenter of Rheumatoid Arthritis of Anhui Medical UniversityHefei230032China
| | - Bo Liang
- Institute of Dermatology and Department of Dermatologythe First Affiliated HospitalAnhui Medical UniversityHefei230032China
| | - Chenchen Han
- Institute of Clinical PharmacologyAnhui Medical UniversityKey Laboratory of Anti-inflammatory and Immune MedicineMinistry of EducationAnhui Collaborative Innovation Center of Anti-inflammatory and Immune MedicineCenter of Rheumatoid Arthritis of Anhui Medical UniversityHefei230032China
| | - Yu Zhang
- Institute of Clinical PharmacologyAnhui Medical UniversityKey Laboratory of Anti-inflammatory and Immune MedicineMinistry of EducationAnhui Collaborative Innovation Center of Anti-inflammatory and Immune MedicineCenter of Rheumatoid Arthritis of Anhui Medical UniversityHefei230032China
| | - Qian Liu
- Institute of Clinical PharmacologyAnhui Medical UniversityKey Laboratory of Anti-inflammatory and Immune MedicineMinistry of EducationAnhui Collaborative Innovation Center of Anti-inflammatory and Immune MedicineCenter of Rheumatoid Arthritis of Anhui Medical UniversityHefei230032China
| | - Wei Wei
- Institute of Clinical PharmacologyAnhui Medical UniversityKey Laboratory of Anti-inflammatory and Immune MedicineMinistry of EducationAnhui Collaborative Innovation Center of Anti-inflammatory and Immune MedicineCenter of Rheumatoid Arthritis of Anhui Medical UniversityHefei230032China,Correspondence address. Tel: +86-551-65161209; E-mail: (Y.M.) / E-mail: (W.W.) @ahmu.edu.cn
| | - Yang Ma
- Institute of Clinical PharmacologyAnhui Medical UniversityKey Laboratory of Anti-inflammatory and Immune MedicineMinistry of EducationAnhui Collaborative Innovation Center of Anti-inflammatory and Immune MedicineCenter of Rheumatoid Arthritis of Anhui Medical UniversityHefei230032China,Correspondence address. Tel: +86-551-65161209; E-mail: (Y.M.) / E-mail: (W.W.) @ahmu.edu.cn
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Xie X, Bai G, Zhang L, Liu H, Qiang D, Li L. Changes in plasma IRAK-M in patients with prediabetes and its relationship with related metabolic indexes: a cross-sectional study. J Int Med Res 2022; 50:3000605221111275. [PMID: 36039603 PMCID: PMC9437484 DOI: 10.1177/03000605221111275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To investigate whether IL-1R-associated kinase (IRAK)-M is associated with prediabetes and type 2 diabetes (T2D). METHODS In this cross-sectional study, enrolled subjects were assigned to different groups according to their fasting plasma glucose (FPG) values. IRAK-M and metabolic parameters, including fasting insulin (FINS), glycosylated hemoglobin (HbA1c), homeostasis model assessment of insulin resistance (HOMA-IR) and beta-cell function (HOMA-β), and thioredoxin-interacting protein (TXNIP), were evaluated. The area under the receiver operating characteristic curve of IRAK-M and TXNIP for prediabetes and T2D was determined. RESULTS IRAK-M decreased significantly with increasing FPG levels. IRAK-M was negatively correlated with TXNIP, FPG, FINS, HbA1c, and HOMA-IR and positively correlated with HOMA-β. The diagnostic cutoff value of IRAK-M was 3.76 ng/mL for prediabetes and 3.45 ng/mL for T2D. After stratifying by IRAK-M (<3.76 and ≥3.76 ng/mL), patients with a higher TXNIP level showed a greater risk of prediabetes or T2D in the subgroup with low IRAK-M (<3.76 ng/mL). CONCLUSIONS IRAK-M is independently and positively associated with prediabetes and T2D, while TXNIP is independently and negatively associated with prediabetes and T2D. IRAK-M and TXNIP serve as diagnostic factors for prediabetes.
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Affiliation(s)
- Xiaomin Xie
- Department of Endocrinology, The First People's Hospital of Yinchuan, Yinchuan, Ningxia, China
| | - Guirong Bai
- Department of Endocrinology, The First People's Hospital of Yinchuan, Yinchuan, Ningxia, China
| | - Li Zhang
- Department of Endocrinology, The First People's Hospital of Yinchuan, Yinchuan, Ningxia, China
| | - Huili Liu
- Department of Endocrinology, The First People's Hospital of Yinchuan, Yinchuan, Ningxia, China
| | - Dan Qiang
- Department of Endocrinology, The First People's Hospital of Yinchuan, Yinchuan, Ningxia, China
| | - Ling Li
- Department of Endocrinology, The First People's Hospital of Yinchuan, Yinchuan, Ningxia, China
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Sapidolide A alleviates acetaminophen-induced acute liver injury by inhibiting NLRP3 inflammasome activation in macrophages. Acta Pharmacol Sin 2022; 43:2016-2025. [PMID: 35022542 PMCID: PMC9343373 DOI: 10.1038/s41401-021-00842-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 12/10/2021] [Indexed: 02/06/2023] Open
Abstract
Macrophages play a critical role in the pathogenesis of acetaminophen (APAP)-induced liver injury (AILI), a major cause of acute liver failure or even death. Sapidolide A (SA) is a sesquiterpene lactone extracted from Baccaurea ramiflora Lour., a folk medicine used in China to treat inflammatory diseases. In this study, we investigated whether SA exerted protective effects on macrophages, thus alleviated the secondary hepatocyte damage in an AILI. We showed that SA (5-20 μM) suppressed the phosphorylated activation of NF-κB in a dose-dependent manner, thereby inhibiting the expression and activation of the NOD-like receptor protein 3 (NLRP3) inflammasome and pyroptosis in LPS/ATP-treated mouse bone marrow-derived primary macrophages (BMDMs). In human hepatic cell line L02 co-cultured with BMDMs, SA (10 μM) protected macrophages from the pyroptosis induced by APAP-damaged L02 cells. Moreover, SA treatment reduced the secondary liver cell damage aggravated by the conditioned medium (CM) taken from LPS/ATP-treated macrophages. The in vivo assessments conducted on mice pretreated with SA (25, 50 mg/kg, ip) then with a single dose of APAP (400 mg/kg, ip) showed that SA significantly alleviated inflammatory responses of AILI by inhibiting the expression and activation of the NLRP3 inflammasome. In general, the results reported herein revealed that SA exerts anti-inflammatory effects by regulating NLRP3 inflammasome activation in macrophages, which suggests that SA has great a potential for use in the treatment of AILI patients.
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Activation and Pharmacological Regulation of Inflammasomes. Biomolecules 2022; 12:biom12071005. [PMID: 35883561 PMCID: PMC9313256 DOI: 10.3390/biom12071005] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/16/2022] [Accepted: 07/18/2022] [Indexed: 01/27/2023] Open
Abstract
Inflammasomes are intracellular signaling complexes of the innate immune system, which is part of the response to exogenous pathogens or physiological aberration. The multiprotein complexes mainly consist of sensor proteins, adaptors, and pro-caspase-1. The assembly of the inflammasome upon extracellular and intracellular cues drives the activation of caspase-1, which processes pro-inflammatory cytokines IL-1β and IL-18 to maturation and gasdermin-D for pore formation, leading to pyroptosis and cytokine release. Inflammasome signaling functions in numerous infectious or sterile inflammatory diseases, including inherited autoinflammatory diseases, metabolic disorders, cardiovascular diseases, cancers, neurodegenerative disorders, and COVID-19. In this review, we summarized current ideas on the organization and activation of inflammasomes, with details on the molecular mechanisms, regulations, and interventions. The recent developments of pharmacological strategies targeting inflammasomes as disease therapeutics were also covered.
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Chen M, Rong R, Xia X. Spotlight on pyroptosis: role in pathogenesis and therapeutic potential of ocular diseases. J Neuroinflammation 2022; 19:183. [PMID: 35836195 PMCID: PMC9281180 DOI: 10.1186/s12974-022-02547-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 07/05/2022] [Indexed: 11/10/2022] Open
Abstract
Pyroptosis is a programmed cell death characterized by swift plasma membrane disruption and subsequent release of cellular contents and pro-inflammatory mediators (cytokines), including IL‐1β and IL‐18. It differs from other types of programmed cell death such as apoptosis, autophagy, necroptosis, ferroptosis, and NETosis in terms of its morphology and mechanism. As a recently discovered form of cell death, pyroptosis has been demonstrated to be involved in the progression of multiple diseases. Recent studies have also suggested that pyroptosis is linked to various ocular diseases. In this review, we systematically summarized and discussed recent scientific discoveries of the involvement of pyroptosis in common ocular diseases, including diabetic retinopathy, age-related macular degeneration, AIDS-related human cytomegalovirus retinitis, glaucoma, dry eye disease, keratitis, uveitis, and cataract. We also organized new and emerging evidence suggesting that pyroptosis signaling pathways may be potential therapeutic targets in ocular diseases, hoping to provide a summary of overall intervention strategies and relevant multi-dimensional evaluations for various ocular diseases, as well as offer valuable ideas for further research and development from the perspective of pyroptosis.
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Affiliation(s)
- Meini Chen
- Eye Center of Xiangya Hospital, Central South University, Changsha, 410008, Hunan, People's Republic of China.,Hunan Key Laboratory of Ophthalmology, Changsha, 410008, Hunan, People's Republic of China.,National Clinical Research Center for Geriatric Diseases (Xiangya Hospital), Changsha, 410008, Hunan, People's Republic of China
| | - Rong Rong
- Eye Center of Xiangya Hospital, Central South University, Changsha, 410008, Hunan, People's Republic of China.,Hunan Key Laboratory of Ophthalmology, Changsha, 410008, Hunan, People's Republic of China.,National Clinical Research Center for Geriatric Diseases (Xiangya Hospital), Changsha, 410008, Hunan, People's Republic of China
| | - Xiaobo Xia
- Eye Center of Xiangya Hospital, Central South University, Changsha, 410008, Hunan, People's Republic of China. .,Hunan Key Laboratory of Ophthalmology, Changsha, 410008, Hunan, People's Republic of China. .,National Clinical Research Center for Geriatric Diseases (Xiangya Hospital), Changsha, 410008, Hunan, People's Republic of China.
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Campbell GR, Rawat P, Spector SA. Pacritinib Inhibition of IRAK1 Blocks Aberrant TLR8 Signalling by SARS-CoV-2 and HIV-1-Derived RNA. J Innate Immun 2022; 15:96-106. [PMID: 35785771 PMCID: PMC10643889 DOI: 10.1159/000525292] [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: 03/02/2022] [Accepted: 05/27/2022] [Indexed: 11/19/2022] Open
Abstract
Macrophages promote an early host response to infection by releasing pro-inflammatory cytokines such as interleukin (IL) 1β (IL-1β), tumour necrosis factor (TNF), and IL-6. One of the mechanisms through which cells sense pathogenic microorganisms is through Toll-like receptors (TLRs). IL-1 receptor-associated kinase (IRAK) 1, IRAK2, IRAK3, and IRAK4 are integral to TLR and IL-1 receptor signalling pathways. Recent studies suggest a role for aberrant TLR8 and NLRP3 inflammasome activation during both COVID-19 and HIV-1 infection. Here, we show that pacritinib inhibits the TLR8-dependent pro-inflammatory cytokine response elicited by GU-rich single-stranded RNA derived from SARS-CoV-2 and HIV-1. Using genetic and pharmacologic inhibition, we demonstrate that pacritinib inhibits IRAK1 phosphorylation and ubiquitination which then inhibits the recruitment of the TAK1 complex to IRAK1, thus inhibiting the activation of downstream signalling and the production of pro-inflammatory cytokines.
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Affiliation(s)
- Grant R. Campbell
- Division of Infectious Diseases, Department of Pediatrics, University of California San Diego, La Jolla, California, USA
| | - Pratima Rawat
- Division of Infectious Diseases, Department of Pediatrics, University of California San Diego, La Jolla, California, USA
| | - Stephen A. Spector
- Division of Infectious Diseases, Department of Pediatrics, University of California San Diego, La Jolla, California, USA
- Rady Children's Hospital, San Diego, California, USA
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Kim SK. The Mechanism of the NLRP3 Inflammasome Activation and Pathogenic Implication in the Pathogenesis of Gout. JOURNAL OF RHEUMATIC DISEASES 2022; 29:140-153. [PMID: 37475970 PMCID: PMC10324924 DOI: 10.4078/jrd.2022.29.3.140] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 02/16/2022] [Accepted: 02/22/2022] [Indexed: 07/22/2023]
Abstract
The NACHT, LRR, and PYD-domains-containing protein 3 (NLRP3) inflammasome is an intracellular multi-protein signaling platform that is activated by cytosolic pattern-recognition receptors such as NLRs against endogenous and exogenous pathogens. Once it is activated by a variety of danger signals, recruitment and assembly of NLRP3, ASC, and pro-caspase-1 trigger the processing and release of pro-inflammatory cytokines including interleukin-1β (IL-1β) and IL-18. Multiple intracellular and extracellular structures and molecular mechanisms are involved in NLRP3 inflammasome activation. Gout is an autoinflammatory disease induced by inflammatory response through production of NLRP3 inflammasome-mediated proinflammatory cytokines such as IL-1β by deposition of monosodium urate (MSU) crystals in the articular joints and periarticular structures. NLRP3 inflammasome is considered a main therapeutic target in MSU crystal-induced inflammation in gout. Novel therapeutic strategies have been proposed to control acute flares of gouty arthritis and prophylaxis for gout flares through modulation of the NLRP3/IL-1 axis pathway. This review discusses the basic mechanism of NLRP3 inflammasome activation and the IL-1-induced inflammatory cascade and explains the NLRP3 inflammasome-induced pathogenic role in the pathogenesis of gout.
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Affiliation(s)
- Seong-Kyu Kim
- Division of Rheumatology, Department of Internal Medicine, Daegu Catholic University School of Medicine, Daegu, Korea
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45
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Yin H, Liu N, Sigdel KR, Duan L. Role of NLRP3 Inflammasome in Rheumatoid Arthritis. Front Immunol 2022; 13:931690. [PMID: 35833125 PMCID: PMC9271572 DOI: 10.3389/fimmu.2022.931690] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 05/30/2022] [Indexed: 11/13/2022] Open
Abstract
Rheumatoid arthritis (RA) is a chronic inflammatory disease characterized by multi-articular, symmetrical and invasive arthritis resulting from immune system abnormalities involving T and B lymphocytes. Although significant progress has been made in the understanding of RA pathogenesis, the underlying mechanisms are not fully understood. Recent studies suggest that NLRP3 inflammasome, a regulator of inflammation, might play an important role in the development of RA. There have been increasing clinical and pre-clinical evidence showing the treatment of NLRP3/IL-1β in inflammatory diseases. To provide a foundation for the development of therapeutic strategies, we will briefly summarize the roles of NLRP3 inflammasome in RA and explore its potential clinical treatment.
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Affiliation(s)
- Hui Yin
- Department of Rheumatology and Clinical Immunology, Jiangxi Provincial People’s Hospital, Medical College of Nanchang University, Nanchang, China
- Department of Rheumatology and Clinical Immunology, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China
| | - Na Liu
- Department of Rheumatology and Clinical Immunology, Jiangxi Provincial People’s Hospital, Medical College of Nanchang University, Nanchang, China
- Department of Rheumatology and Clinical Immunology, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China
| | - Keshav Raj Sigdel
- Department of Internal Medicine, Patan Academy of Health Sciences, Kathmandu, Nepal
| | - Lihua Duan
- Department of Rheumatology and Clinical Immunology, Jiangxi Provincial People’s Hospital, Medical College of Nanchang University, Nanchang, China
- Department of Rheumatology and Clinical Immunology, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China
- *Correspondence: Lihua Duan,
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Nanda SK, Vollmer S, Perez-Oliva AB. Posttranslational Regulation of Inflammasomes, Its Potential as Biomarkers and in the Identification of Novel Drugs Targets. Front Cell Dev Biol 2022; 10:887533. [PMID: 35800898 PMCID: PMC9253692 DOI: 10.3389/fcell.2022.887533] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 05/27/2022] [Indexed: 11/13/2022] Open
Abstract
In this review, we have summarized classical post-translational modifications (PTMs) such as phosphorylation, ubiquitylation, and SUMOylation of the different components of one of the most studied NLRP3, and other emerging inflammasomes. We will highlight how the discovery of these modifications have provided mechanistic insight into the biology, function, and regulation of these multiprotein complexes not only in the context of the innate immune system but also in adaptive immunity, hematopoiesis, bone marrow transplantation, as well and their role in human diseases. We have also collected available information concerning less-studied modifications such as acetylation, ADP-ribosylation, nitrosylation, prenylation, citrullination, and emphasized their relevance in the regulation of inflammasome complex formation. We have described disease-associated mutations affecting PTMs of inflammasome components. Finally, we have discussed how a deeper understanding of different PTMs can help the development of biomarkers and identification of novel drug targets to treat diseases caused by the malfunctioning of inflammasomes.
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Affiliation(s)
- Sambit K. Nanda
- Bioscience Immunology, Research and Early Development, Respiratory and Immunology (R&I), Gaithersburg, MD, United States
- *Correspondence: Sambit K. Nanda, ; Stefan Vollmer, ; Ana B. Perez-Oliva,
| | - Stefan Vollmer
- Bioscience COPD/IPF, Research and Early Development, Respiratory and Immunology (R&I), Gothenburg, Sweden
- *Correspondence: Sambit K. Nanda, ; Stefan Vollmer, ; Ana B. Perez-Oliva,
| | - Ana B. Perez-Oliva
- Instituto Murciano de Investigación Biosanitaria (IMIB)-Arrixaca, Murcia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
- *Correspondence: Sambit K. Nanda, ; Stefan Vollmer, ; Ana B. Perez-Oliva,
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Blevins HM, Xu Y, Biby S, Zhang S. The NLRP3 Inflammasome Pathway: A Review of Mechanisms and Inhibitors for the Treatment of Inflammatory Diseases. Front Aging Neurosci 2022; 14:879021. [PMID: 35754962 PMCID: PMC9226403 DOI: 10.3389/fnagi.2022.879021] [Citation(s) in RCA: 140] [Impact Index Per Article: 70.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 05/12/2022] [Indexed: 12/24/2022] Open
Abstract
The NLRP3 inflammasome is a multiprotein complex that plays a pivotal role in regulating the innate immune system and inflammatory signaling. Upon activation by PAMPs and DAMPs, NLRP3 oligomerizes and activates caspase-1 which initiates the processing and release of pro-inflammatory cytokines IL-1β and IL-18. NLRP3 is the most extensively studied inflammasome to date due to its array of activators and aberrant activation in several inflammatory diseases. Studies using small molecules and biologics targeting the NLRP3 inflammasome pathway have shown positive outcomes in treating various disease pathologies by blocking chronic inflammation. In this review, we discuss the recent advances in understanding the NLRP3 mechanism, its role in disease pathology, and provide a broad review of therapeutics discovered to target the NLRP3 pathway and their challenges.
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Affiliation(s)
| | | | | | - Shijun Zhang
- Department of Medicinal Chemistry, Virginia Commonwealth University, Richmond, VA, United States
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48
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Liu D, Zhong Z, Karin M. NF-κB: A Double-Edged Sword Controlling Inflammation. Biomedicines 2022; 10:1250. [PMID: 35740272 PMCID: PMC9219609 DOI: 10.3390/biomedicines10061250] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 05/10/2022] [Accepted: 05/23/2022] [Indexed: 02/06/2023] Open
Abstract
Inflammation, when properly mounted and precisely calibrated, is a beneficial process that enables the rapid removal of invading pathogens and/or cellular corpses and promotes tissue repair/regeneration to restore homeostasis after injury. Being a paradigm of a rapid response transcription factor, the nuclear factor-kappa B (NF-κB) transcription factor family plays a central role in amplifying inflammation by inducing the expression of inflammatory cytokines and chemokines. Additionally, NF-κB also induces the expression of pro-survival and -proliferative genes responsible for promoting tissue repair and regeneration. Paradoxically, recent studies have suggested that the NF-κB pathway can also exert inhibitory effects on pro-inflammatory cytokine production to temper inflammation. Here, we review our current understanding about the pro- and anti-inflammatory roles of NF-κB and discuss the implication of its dichotomous inflammation-modulating activity in the context of inflammasome activation and tumorigenesis.
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Affiliation(s)
- Danhui Liu
- Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA;
| | - Zhenyu Zhong
- Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA;
| | - Michael Karin
- Laboratory of Gene Regulation and Signal Transduction, Department of Pharmacology, University of California San Diego, La Jolla, CA 92093, USA
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Liu C, Shen Y, Huang L, Wang J. TLR2/caspase-5/Panx1 pathway mediates necrosis-induced NLRP3 inflammasome activation in macrophages during acute kidney injury. Cell Death Dis 2022; 8:232. [PMID: 35473933 PMCID: PMC9042857 DOI: 10.1038/s41420-022-01032-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 04/13/2022] [Accepted: 04/13/2022] [Indexed: 11/19/2022]
Abstract
Acute kidney injury (AKI) is characterized by necroinflammation formed by necrotic tubular epithelial cells (TECs) and interstitial inflammation. In necroinflammation, macrophages are key inflammatory cells and can be activated and polarized into proinflammatory macrophages. Membranous Toll-like receptors (TLRs) can cooperate with intracellular NOD-like receptor protein 3 (NLRP3) to recognize danger signals from necrotic TECs and activate proinflammatory macrophages by assembling NLRP3 inflammasome. However, the cooperation between TLRs and NLRP3 is still unclear. Using conditioned medium from necrotic TECs, we confirmed that necrotic TECs could release danger signals to activate NLRP3 inflammasome in macrophages. We further identified that necrotic TECs-induced NLRP3 inflammasome activation was dependent on ATP secretion via Pannexin-1 (Panx1) channel in macrophages. Next, we verified that TLR2 was required for the activation of Panx1 and NLRP3 in macrophages. Mechanistically, we indicated that caspase-5 mediated TLR2-induced Panx1 activation. In addition, we showed that necrotic TECs-induced activation of TLR2/caspase-5/Panx1 axis could be decreased in macrophages when TECs was protected by N-acetylcysteine (NAC). Overall, we demonstrate that danger signals from necrotic TECs could activate NLRP3 inflammasome in macrophages via TLR2/caspase-5/Panx1 axis during AKI.
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Affiliation(s)
- Chongbin Liu
- Clinical Research Center of Kidney Disease, State Key Laboratory of Organ Failure Research, Guangdong Provincial Institute of Nephrology, Guangdong Provincial Key Laboratory of Renal Failure Research, Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - Yanting Shen
- Clinical Research Center of Kidney Disease, State Key Laboratory of Organ Failure Research, Guangdong Provincial Institute of Nephrology, Guangdong Provincial Key Laboratory of Renal Failure Research, Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - Liuwei Huang
- Clinical Research Center of Kidney Disease, State Key Laboratory of Organ Failure Research, Guangdong Provincial Institute of Nephrology, Guangdong Provincial Key Laboratory of Renal Failure Research, Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - Jun Wang
- Clinical Research Center of Kidney Disease, State Key Laboratory of Organ Failure Research, Guangdong Provincial Institute of Nephrology, Guangdong Provincial Key Laboratory of Renal Failure Research, Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, PR China. .,Department of Nephrology, The First People's Hospital of Kashi, Kashi, PR China.
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50
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Fu H, Gu YH, Tan J, Yang YN, Wang GH. CircACTR2 in macrophages promotes renal fibrosis by activating macrophage inflammation and epithelial-mesenchymal transition of renal tubular epithelial cells. Cell Mol Life Sci 2022; 79:253. [PMID: 35449370 PMCID: PMC11072867 DOI: 10.1007/s00018-022-04247-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 02/16/2022] [Accepted: 03/16/2022] [Indexed: 02/06/2023]
Abstract
The crosstalk between macrophages and tubular epithelial cells (TECs) actively regulates the progression of renal fibrosis. In the present study, we revealed the significance of circular RNA ACTR2 (circACTR2) in regulating macrophage inflammation, epithelial-mesenchymal transition (EMT) of TECs, and the development of renal fibrosis. Our results showed UUO-induced renal fibrosis was associated with increased inflammation and EMT, hypertrophy of contralateral kidney, up-regulations of circACTR2 and NLRP3, and the down-regulation of miR-561. CircACTR2 sufficiently and essentially promoted the activation of NLRP3 inflammasome, pyroptosis, and inflammation in macrophages, and through paracrine effect, stimulated EMT and fibrosis of TECs. Mechanistically, circACTR2 sponged miR-561 and up-regulated NLRP3 expression level to induce the secretion of IL-1β. In TECs, IL-1β induced renal fibrosis via up-regulating fascin-1. Knocking down circACTR2 or elevating miR-561 potently alleviated renal fibrosis in vivo. In summary, circACTR2, by sponging miR-561, activated NLRP3 inflammasome, promoted macrophage inflammation, and stimulated macrophage-induced EMT and fibrosis of TECs. Knocking down circACTR2 and overexpressing miR-561 may, thus, benefit the treatment of renal fibrosis.
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Affiliation(s)
- Hua Fu
- Department of Pathology, Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, People's Republic of China
| | - Yong-Hong Gu
- Department of Pathology, Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, People's Republic of China
| | - Juan Tan
- Department of Pathology, Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, People's Republic of China
| | - Ye-Ning Yang
- Department of Pathology, Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, People's Republic of China
| | - Guo-Hui Wang
- Department of Gastrointestinal Surgery, Third Xiangya Hospital, Central South University, No 138, Tongzipo Road, Yuelu, Changsha, 410013, Hunan, People's Republic of China.
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