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Hirano A, Kadoya H, Yamanouchi Y, Kishi S, Sasaki T, Kashihara N. IL-1β may be an indicator of peritoneal deterioration after healing of peritoneal dialysis-associated peritonitis. BMC Nephrol 2023; 24:374. [PMID: 38114999 PMCID: PMC10731768 DOI: 10.1186/s12882-023-03431-8] [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: 05/17/2023] [Accepted: 12/07/2023] [Indexed: 12/21/2023] Open
Abstract
BACKGROUND Peritoneal dialysis (PD) is an essential lifesaving treatment for end-stage renal disease. However, PD therapy is limited by peritoneal inflammation, which leads to peritoneal membrane failure because of progressive peritoneal deterioration. Peritonitis is the most common complication in patients undergoing PD. Thus, elucidating the mechanism of chronic peritoneal inflammation after PD-associated peritonitis is an urgent issue for patients undergoing PD. This first case report suggests that an increased interleukin-1β (IL-1β) expression in the peritoneal dialysate after healing of peritonitis can contribute to peritoneal deterioration. CASE PRESENTATION A 64-year-old woman was diagnosed with diabetes mellitus 10 years ago and had been started on PD for end-stage renal disease. One day, the patient developed PD-associated acute peritonitis and was admitted to our hospital for treatment. Thus, treatment with antimicrobial agents was initiated for PD-associated peritonitis. Dialysate turbidity gradually disappeared after treatment with antimicrobial agents, and the number of cells in the PD fluid decreased. After 2 weeks of antimicrobial therapy, peritonitis was clinically cured, and the patient was discharged. Thereafter, the patient did not develop peritonitis; however, residual renal function tended to decline, and peritoneal function also decreased in a relatively short period. We evaluated pro-inflammatory cytokine levels before and after PD-associated peritonitis; interestingly, the levels of IL-1β remained high in the PD fluid, even after remission of bacterial peritonitis. In addition, it correlated with decreased peritoneal function. CONCLUSIONS This case suggests that inflammasome-derived pro-inflammatory cytokines may contribute to chronic inflammation-induced peritoneal deterioration after PD-related peritonitis is cured.
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Affiliation(s)
- Akira Hirano
- Department of Nephrology and Hypertension, Kawasaki Medical School, Kurashiki, Okayama, 701-0192, Japan
| | - Hiroyuki Kadoya
- Department of Nephrology and Hypertension, Kawasaki Medical School, Kurashiki, Okayama, 701-0192, Japan.
| | - Yu Yamanouchi
- Department of Nephrology and Hypertension, Kawasaki Medical School, Kurashiki, Okayama, 701-0192, Japan
| | - Seiji Kishi
- Department of Nephrology and Hypertension, Kawasaki Medical School, Kurashiki, Okayama, 701-0192, Japan
| | - Tamaki Sasaki
- Department of Nephrology and Hypertension, Kawasaki Medical School, Kurashiki, Okayama, 701-0192, Japan
| | - Naoki Kashihara
- Department of Nephrology and Hypertension, Kawasaki Medical School, Kurashiki, Okayama, 701-0192, Japan
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Glück IM, Mathias GP, Strauss S, Rat V, Gialdini I, Ebert TS, Stafford C, Agam G, Manley S, Hornung V, Jungmann R, Sieben C, Lamb DC. Nanoscale organization of the endogenous ASC speck. iScience 2023; 26:108382. [PMID: 38047065 PMCID: PMC10690566 DOI: 10.1016/j.isci.2023.108382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 06/15/2023] [Accepted: 10/31/2023] [Indexed: 12/05/2023] Open
Abstract
The NLRP3 inflammasome is a central component of the innate immune system. Its activation leads to formation of the ASC speck, a supramolecular assembly of the inflammasome adaptor protein ASC. Different models, based on ASC overexpression, have been proposed for the structure of the ASC speck. Using dual-color 3D super-resolution imaging (dSTORM and DNA-PAINT), we visualized the ASC speck structure following NLRP3 inflammasome activation using endogenous ASC expression. A complete structure was only obtainable by labeling with both anti-ASC antibodies and nanobodies. The complex varies in diameter between ∼800 and 1000 nm, and is composed of a dense core with emerging filaments. Dual-color confocal fluorescence microscopy indicated that the ASC speck does not colocalize with the microtubule-organizing center at late time points after Nigericin stimulation. From super-resolution images of whole cells, the ASC specks were sorted into a pseudo-time sequence indicating that they become denser but not larger during formation.
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Affiliation(s)
- Ivo M. Glück
- Department of Chemistry, Ludwig Maximilians-Universität München, Butenandtstraße 5-13, 81377 München, Germany
- Center for Nano Science (CENS), Ludwig Maximilians-Universität München, Butenandtstraße 5-13, 81377 München, Germany
| | - Grusha Primal Mathias
- Department of Chemistry, Ludwig Maximilians-Universität München, Butenandtstraße 5-13, 81377 München, Germany
| | - Sebastian Strauss
- Faculty of Physics and Center for Nanoscience, Ludwig Maximilian University, Munich, Germany
- Max Planck Institute of Biochemistry, Martinsried, Germany
| | - Virgile Rat
- Department of Chemistry, Ludwig Maximilians-Universität München, Butenandtstraße 5-13, 81377 München, Germany
- Center for Nano Science (CENS), Ludwig Maximilians-Universität München, Butenandtstraße 5-13, 81377 München, Germany
| | - Irene Gialdini
- Department of Chemistry, Ludwig Maximilians-Universität München, Butenandtstraße 5-13, 81377 München, Germany
- Center for Nano Science (CENS), Ludwig Maximilians-Universität München, Butenandtstraße 5-13, 81377 München, Germany
| | - Thomas Sebastian Ebert
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität, Munich, Germany
| | - Che Stafford
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität, Munich, Germany
| | - Ganesh Agam
- Department of Chemistry, Ludwig Maximilians-Universität München, Butenandtstraße 5-13, 81377 München, Germany
- Center for Nano Science (CENS), Ludwig Maximilians-Universität München, Butenandtstraße 5-13, 81377 München, Germany
| | - Suliana Manley
- Laboratory of Experimental Biophysics, École Polytechnique Fédérale de Lausanne, BSP 427 (Cubotron UNIL), Rte de la Sorge, CH-1015 Lausanne, Switzerland
| | - Veit Hornung
- Max Planck Institute of Biochemistry, Martinsried, Germany
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität, Munich, Germany
| | - Ralf Jungmann
- Faculty of Physics and Center for Nanoscience, Ludwig Maximilian University, Munich, Germany
- Max Planck Institute of Biochemistry, Martinsried, Germany
| | - Christian Sieben
- Laboratory of Experimental Biophysics, École Polytechnique Fédérale de Lausanne, BSP 427 (Cubotron UNIL), Rte de la Sorge, CH-1015 Lausanne, Switzerland
| | - Don C. Lamb
- Department of Chemistry, Ludwig Maximilians-Universität München, Butenandtstraße 5-13, 81377 München, Germany
- Center for Nano Science (CENS), Ludwig Maximilians-Universität München, Butenandtstraße 5-13, 81377 München, Germany
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Sun S, Li Z, Huang C, Liu J, Yu Q, Jiang X, Yue K, Zhao J, Xu T, Liu Y, Li X, Qin C, Jiang Y. Discovery of Novel 2,3-Dihydro-1 H-indene-5-sulfonamide NLRP3 Inflammasome Inhibitors Targeting Colon as a Potential Therapy for Colitis. J Med Chem 2023; 66:16141-16167. [PMID: 38029358 DOI: 10.1021/acs.jmedchem.3c01511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
The NLRP3 inflammasome is a multiprotein complex that plays a crucial role in the pathophysiology of multiple inflammation-related diseases. In this study, we designed and synthesized a series of novel 2,3-dihydro-1H-indene-5-sulfonamide analogues as NLRP3 inflammasome inhibitors, and then identified compound 15z as a potent and specific inhibitor (IC50: 0.13 μM) with low toxicity. Mechanistic studies indicate that 15z binds directly to NLRP3 protein (KD: 102.7 nM), blocking the assembly and activation of the NLRP3 inflammasome and effectively inhibiting cell pyroptosis. Given the notable distribution of 15z in the colon, the DSS-induced colitis model was employed to evaluate its in vivo effectiveness. 15z significantly impacted NLRP3 inflammasome activation and relieved inflammatory bowel disease symptoms in this model. Acute and subacute toxicity studies suggested that 15z has a favorable safety profile. Our results indicate that 15z has great potential to be further developed as a candidate for the treatment of inflammatory bowel disease.
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Affiliation(s)
- Simin Sun
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
| | - Zhuoyue Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
- Center for Targeted Protein Degradation and Drug Discovery, Ocean University of China, Qingdao, Shandong 266003, China
| | - Chao Huang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
| | - Jinyu Liu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
| | - Qixin Yu
- Marine Biomedical Research Institute of Qingdao, Qingdao, Shandong 266071, P.R. China
| | - Xiaolin Jiang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
- Center for Targeted Protein Degradation and Drug Discovery, Ocean University of China, Qingdao, Shandong 266003, China
| | - Kairui Yue
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
| | - Jianchun Zhao
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
| | - Tongqiang Xu
- Marine Biomedical Research Institute of Qingdao, Qingdao, Shandong 266071, P.R. China
| | - Yankai Liu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
| | - Xiaoyang Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
- Center for Targeted Protein Degradation and Drug Discovery, Ocean University of China, Qingdao, Shandong 266003, China
- Marine Biomedical Research Institute of Qingdao, Qingdao, Shandong 266071, P.R. China
| | - Chong Qin
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
- Center for Targeted Protein Degradation and Drug Discovery, Ocean University of China, Qingdao, Shandong 266003, China
- Marine Biomedical Research Institute of Qingdao, Qingdao, Shandong 266071, P.R. China
| | - Yuqi Jiang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
- Center for Targeted Protein Degradation and Drug Discovery, Ocean University of China, Qingdao, Shandong 266003, China
- Marine Biomedical Research Institute of Qingdao, Qingdao, Shandong 266071, P.R. China
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104
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Gaspar-Morales EA, Waterston A, Sadqi M, Diaz-Parga P, Smith AM, Gopinath A, Andresen Eguiluz RC, de Alba E. Natural and Engineered Isoforms of the Inflammasome Adaptor ASC Form Noncovalent, pH-Responsive Hydrogels. Biomacromolecules 2023; 24:5563-5577. [PMID: 37930828 DOI: 10.1021/acs.biomac.3c00409] [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] [Indexed: 11/08/2023]
Abstract
The protein ASC polymerizes into intricate filament networks to assemble the inflammasome, a filamentous multiprotein complex that triggers the inflammatory response. ASC carries two Death Domains integrally involved in protein self-association for filament assembly. We have leveraged this behavior to create noncovalent, pH-responsive hydrogels of full-length, folded ASC by carefully controlling the pH as a critical factor in the polymerization process. We show that natural variants of ASC (ASC isoforms) involved in inflammasome regulation also undergo hydrogelation. To further demonstrate this general capability, we engineered proteins inspired by the ASC structure that also form hydrogels. We analyzed the structural network of the natural and engineered protein hydrogels using transmission and scanning electron microscopy and studied their viscoelastic behavior using shear rheology. Our results reveal one of the very few examples of hydrogels created by the self-assembly of globular proteins and domains in their native conformation and show that Death Domains can be used alone or as building blocks to engineer bioinspired hydrogels.
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105
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Sharma M, de Alba E. Assembly mechanism of the inflammasome sensor AIM2 revealed by single molecule analysis. Nat Commun 2023; 14:7957. [PMID: 38042863 PMCID: PMC10693601 DOI: 10.1038/s41467-023-43691-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 11/06/2023] [Indexed: 12/04/2023] Open
Abstract
Pathogenic dsDNA prompts AIM2 assembly leading to the formation of the inflammasome, a multimeric complex that triggers the inflammatory response. The recognition of foreign dsDNA involves AIM2 self-assembly concomitant with dsDNA binding. However, we lack mechanistic and kinetic information on the formation and propagation of the assembly, which can shed light on innate immunity's time response and specificity. Combining optical traps and confocal fluorescence microscopy, we determine here the association and dissociation rates of the AIM2-DNA complex at the single molecule level. We identify distinct mechanisms for oligomer growth via the binding of incoming AIM2 molecules to adjacent dsDNA or direct interaction with bound AIM2 assemblies, resembling primary and secondary nucleation. Through these mechanisms, the size of AIM2 oligomers can increase fourfold in seconds. Finally, our data indicate that single AIM2 molecules do not diffuse/scan along the DNA, suggesting that oligomerization depends on stochastic encounters with DNA and/or DNA-bound AIM2.
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Affiliation(s)
- Meenakshi Sharma
- Department of Bioengineering, School of Engineering, University of California Merced, Merced, California, USA
| | - Eva de Alba
- Department of Bioengineering, School of Engineering, University of California Merced, Merced, California, USA.
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106
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Ma ZY, Jiang C, Xu LL. Protein-protein interactions and related inhibitors involved in the NLRP3 inflammasome pathway. Cytokine Growth Factor Rev 2023; 74:14-28. [PMID: 37758629 DOI: 10.1016/j.cytogfr.2023.09.003] [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: 09/12/2023] [Accepted: 09/14/2023] [Indexed: 09/29/2023]
Abstract
NOD-like receptor thermal protein domain-associated protein 3 (NLRP3) receptor serves as the central node of immune sensing in the innate immune system, and plays an important role in the initiation and progression of chronic diseases. Cryo-electron microscopy (cryo-EM) has provided insights into the conformation of various oligomers within the NLRP3 activation pathway, significantly advancing our understanding of the mechanisms underlying NLRP3 inflammasome activation. Despite the extensive network of protein-protein interactions (PPIs) involved in the assembly and activation of NLRP3 inflammasome, the utilization of protein-protein interactions has been relatively overlooked in the development of NLRP3 inhibitors. This review focuses on summarizing PPIs within the NLRP3 inflammasome activation pathway and small molecule inhibitors capable of interfering with PPIs to counteract the NLRP3 overactivation. Small molecule NLRP3 inhibitors have been gained significant attention owing to their remarkable efficacy, excellent safety profiles, and unique mechanisms of action.
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Affiliation(s)
- Zhen-Yu Ma
- Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing 210009, China; Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, China Pharmaceutical University, Nanjing 210009, China
| | - Cheng Jiang
- Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing 210009, China; Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, China Pharmaceutical University, Nanjing 210009, China.
| | - Li-Li Xu
- Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing 210009, China; Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, China Pharmaceutical University, Nanjing 210009, China.
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107
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Zhang W, Jiang H, Wu G, Huang P, Wang H, An H, Liu S, Zhang W. The pathogenesis and potential therapeutic targets in sepsis. MedComm (Beijing) 2023; 4:e418. [PMID: 38020710 PMCID: PMC10661353 DOI: 10.1002/mco2.418] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 10/01/2023] [Accepted: 10/12/2023] [Indexed: 12/01/2023] Open
Abstract
Sepsis is defined as "a life-threatening organ dysfunction caused by dysregulated host systemic inflammatory and immune response to infection." At present, sepsis continues to pose a grave healthcare concern worldwide. Despite the use of supportive measures in treating traditional sepsis, such as intravenous fluids, vasoactive substances, and oxygen plus antibiotics to eradicate harmful pathogens, there is an ongoing increase in both the morbidity and mortality associated with sepsis during clinical interventions. Therefore, it is urgent to design specific pharmacologic agents for the treatment of sepsis and convert them into a novel targeted treatment strategy. Herein, we provide an overview of the molecular mechanisms that may be involved in sepsis, such as the inflammatory response, immune dysfunction, complement deactivation, mitochondrial damage, and endoplasmic reticulum stress. Additionally, we highlight important targets involved in sepsis-related regulatory mechanisms, including GSDMD, HMGB1, STING, and SQSTM1, among others. We summarize the latest advancements in potential therapeutic drugs that specifically target these signaling pathways and paramount targets, covering both preclinical studies and clinical trials. In addition, this review provides a detailed description of the crosstalk and function between signaling pathways and vital targets, which provides more opportunities for the clinical development of new treatments for sepsis.
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Affiliation(s)
- Wendan Zhang
- Shanghai Frontiers Science Center of TCM Chemical BiologyInstitute of Interdisciplinary Integrative Medicine ResearchShanghai University of Traditional Chinese MedicineShanghaiChina
- Faculty of PediatricsNational Engineering Laboratory for Birth defects prevention and control of key technologyBeijing Key Laboratory of Pediatric Organ Failurethe Chinese PLA General HospitalBeijingChina
| | - Honghong Jiang
- Shanghai Frontiers Science Center of TCM Chemical BiologyInstitute of Interdisciplinary Integrative Medicine ResearchShanghai University of Traditional Chinese MedicineShanghaiChina
- Faculty of PediatricsNational Engineering Laboratory for Birth defects prevention and control of key technologyBeijing Key Laboratory of Pediatric Organ Failurethe Chinese PLA General HospitalBeijingChina
| | - Gaosong Wu
- Shanghai Frontiers Science Center of TCM Chemical BiologyInstitute of Interdisciplinary Integrative Medicine ResearchShanghai University of Traditional Chinese MedicineShanghaiChina
| | - Pengli Huang
- Shanghai Frontiers Science Center of TCM Chemical BiologyInstitute of Interdisciplinary Integrative Medicine ResearchShanghai University of Traditional Chinese MedicineShanghaiChina
| | - Haonan Wang
- Shanghai Frontiers Science Center of TCM Chemical BiologyInstitute of Interdisciplinary Integrative Medicine ResearchShanghai University of Traditional Chinese MedicineShanghaiChina
| | - Huazhasng An
- Shandong Provincial Key Laboratory for Rheumatic Disease and Translational MedicineThe First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan HospitalJinanShandongChina
| | - Sanhong Liu
- Shanghai Frontiers Science Center of TCM Chemical BiologyInstitute of Interdisciplinary Integrative Medicine ResearchShanghai University of Traditional Chinese MedicineShanghaiChina
| | - Weidong Zhang
- Shanghai Frontiers Science Center of TCM Chemical BiologyInstitute of Interdisciplinary Integrative Medicine ResearchShanghai University of Traditional Chinese MedicineShanghaiChina
- Department of PhytochemistrySchool of PharmacySecond Military Medical UniversityShanghaiChina
- The Research Center for Traditional Chinese MedicineShanghai Institute of Infectious Diseases and BiosecurityShanghai University of Traditional Chinese MedicineShanghaiChina
- Institute of Medicinal Plant DevelopmentChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
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108
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Duan X, Boo ZZ, Chua SL, Chong KHC, Long Z, Yang R, Zhou Y, Janela B, Chotirmall SH, Ginhoux F, Hu Q, Wu B, Yang L. A Bacterial Quorum Sensing Regulated Protease Inhibits Host Immune Responses by Cleaving Death Domains of Innate Immune Adaptors. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2304891. [PMID: 37870218 PMCID: PMC10700182 DOI: 10.1002/advs.202304891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 09/28/2023] [Indexed: 10/24/2023]
Abstract
Innate immune adaptor proteins are critical components of the innate immune system that propagate pro-inflammatory responses from their upstream receptors, and lead to pathogen clearance from the host. Bacterial pathogens have developed strategies to survive inside host cells without triggering the innate immune surveillance in ways that are still not fully understood. Here, it is reported that Pseudomonas aeruginosa induces its quorum sensing mechanism after macrophage engulfment. Further investigation of its secretome identified a quorum sensing regulated product, LasB, is responsible for innate immune suppression depending on the MyD88-mediated signaling. Moreover, it is showed that this specific type of pathogen-mediated innate immune suppression is due to the enzymatic digestion of the death domains of the innate immune adaptors, mainly MyD88, and attributed to LasB's large substrate binding groove. Lastly, it is demonstrated that the secretion of LasB from P. aeruginosa directly contributed to MyD88 degradation within macrophages. Hence, it is discovered an example of bacterial quorum sensing-regulated cellular innate immune suppression by direct cleavage of immune adaptors.
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Affiliation(s)
- Xiangke Duan
- Shenzhen Third People's HospitalThe Second Affiliated Hospital of Southern University of Science and TechnologyNational Clinical Research Center for Infectious DiseaseShenzhen518112P. R. China
- School of MedicineSouthern University of Science and TechnologyShenzhenGuangdong518055P. R. China
- Shenzhen Center for Disease, Control and PreventionShenzhen518055P.R. China
| | - Zhao Zhi Boo
- School of Biological SciencesNanyang Technological UniversitySingapore637551Singapore
- NTU Institute of Structural BiologyNanyang Technological UniversitySingapore636921Singapore
| | - Song Lin Chua
- Department of Applied Biology and Chemical TechnologyThe Hong Kong Polytechnic UniversityHong Kong SAR999077P. R. China
| | - Kelvin Han Chung Chong
- School of Biological SciencesNanyang Technological UniversitySingapore637551Singapore
- NTU Institute of Structural BiologyNanyang Technological UniversitySingapore636921Singapore
| | - Ziqi Long
- School of Biological SciencesNanyang Technological UniversitySingapore637551Singapore
- NTU Institute of Structural BiologyNanyang Technological UniversitySingapore636921Singapore
| | - Renliang Yang
- School of Biological SciencesNanyang Technological UniversitySingapore637551Singapore
- NTU Institute of Structural BiologyNanyang Technological UniversitySingapore636921Singapore
| | - Yachun Zhou
- Shenzhen Third People's HospitalThe Second Affiliated Hospital of Southern University of Science and TechnologyNational Clinical Research Center for Infectious DiseaseShenzhen518112P. R. China
- School of MedicineSouthern University of Science and TechnologyShenzhenGuangdong518055P. R. China
| | - Baptiste Janela
- Skin Research Institute of SingaporeSingapore308232Singapore
- Lee Kong Chian School of MedicineNanyang Technological UniversitySingapore639798Singapore
| | | | - Florent Ginhoux
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)8A Biomedical Grove, ImmunosSingapore138648Singapore
| | - Qinghua Hu
- Shenzhen Center for Disease, Control and PreventionShenzhen518055P.R. China
| | - Bin Wu
- School of Biological SciencesNanyang Technological UniversitySingapore637551Singapore
- NTU Institute of Structural BiologyNanyang Technological UniversitySingapore636921Singapore
| | - Liang Yang
- Shenzhen Third People's HospitalThe Second Affiliated Hospital of Southern University of Science and TechnologyNational Clinical Research Center for Infectious DiseaseShenzhen518112P. R. China
- School of MedicineSouthern University of Science and TechnologyShenzhenGuangdong518055P. R. China
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109
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Wu S, Wen F, Zhong X, Du W, Chen M, Wang J. Astragaloside IV ameliorate acute alcohol-induced liver injury in mice via modulating gut microbiota and regulating NLRP3/caspase-1 signaling pathway. Ann Med 2023; 55:2216942. [PMID: 37243569 DOI: 10.1080/07853890.2023.2216942] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 05/05/2023] [Accepted: 05/17/2023] [Indexed: 05/29/2023] Open
Abstract
PURPOSE Astragaloside IV (AS-IV) is a natural saponin substance extracted from the plant Radix Astragali with anti-inflammatory, antioxidant, anti-apoptotic, and liver-protecting effects. This study was to evaluate the liver protection effect of AS-IV on mice after acute alcohol stimulation. MATERIALS AND METHODS Mice were orally administrated with AS-IV (50, 150, and 500 mg/kg, respectively), and sodium carboxymethyl cellulose (CMC, 50 mg/kg) daily for 7 days, before giving five alcohol-intragastric injections. RESULTS Results suggested that the levels of serum ALT and AST, liver SOD, GSH-PX, 4-HNE, and MDA, serum and liver TNF-α, IL-1β, and IL-6, serum lipopolysaccharide (LPS), lipopolysaccharide binding protein (LBP), diamine oxidase (DAO) and Myeloperoxidase (MPO), the mRNA and protein expression of hepatic NLRP3, Caspase-1, IL-1β, and IL-18 were significantly decreased in AS-IV-treated mice compared with the model group. Moreover, the effect of AS-IV on histopathology of liver tissue confirmed its protective function. Furthermore, AS-IV ameliorated the gut microbiota imbalance and adjusted the abundance of the following dysfunctional bacteria closer to the control group: Butyricicoccus, Turicibacter, Akkermansia, Anaerotruncus, and Mucispirillum. A strong correlation between intestinal bacteria and potential biomarkers was found. CONCLUSION Together, our findings indicated that AS-IV exert the hepatoprotective effect by modulating the gut microbiota imbalance and regulating NLRP3/Caspase-1 signaling pathway.
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Affiliation(s)
- Shan Wu
- School of Public Health, Guangdong Pharmaceutical University, Guangzhou, China
| | - Fei Wen
- School of Public Health, Guangdong Pharmaceutical University, Guangzhou, China
| | - Xiangbin Zhong
- School of Public Health, Guangdong Pharmaceutical University, Guangzhou, China
| | - Wenjing Du
- School of Public Health, Guangdong Pharmaceutical University, Guangzhou, China
| | - Manlian Chen
- The Sixth People's Hospital of Dongguan, Dongguan, China
| | - Junyi Wang
- School of Public Health, Guangdong Pharmaceutical University, Guangzhou, China
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110
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Wang RH, Shang BB, Wu SX, Wang L, Sui SG. Recent updates on pyroptosis in tumors of the digestive tract. J Dig Dis 2023; 24:640-647. [PMID: 38059890 DOI: 10.1111/1751-2980.13244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 11/27/2023] [Accepted: 12/06/2023] [Indexed: 12/08/2023]
Abstract
Pyroptosis is an inflammasome-dependent form of programmed cell death that is mediated by caspases-1, -4, -5, and -11, and the gasdermin protein family. It is characterized by the rupture of cell membrane and the subsequent release of cell contents and interleukins, leading to inflammatory reaction and activation of the immune system. Recent studies have suggested that pyroptosis plays a role in the development of gastrointestinal tumors, impeding tumor generation and progression as well as providing a favorable microenvironment for tumor growth. In this review we outlined the current knowledge regarding the implications of pyroptosis in gastrointestinal cancers.
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Affiliation(s)
- Ruo Han Wang
- Emergency Department, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
| | - Bing Bing Shang
- Emergency Department, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
| | - Shi Xi Wu
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
| | - Liang Wang
- Research and Teaching Department of Comparative Medicine, Dalian Medical University, Dalian, Liaoning Province, China
| | - Shao Guang Sui
- Emergency Department, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
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111
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Terzioglu G, Young-Pearse TL. Microglial function, INPP5D/SHIP1 signaling, and NLRP3 inflammasome activation: implications for Alzheimer's disease. Mol Neurodegener 2023; 18:89. [PMID: 38017562 PMCID: PMC10685641 DOI: 10.1186/s13024-023-00674-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 10/26/2023] [Indexed: 11/30/2023] Open
Abstract
Recent genetic studies on Alzheimer's disease (AD) have brought microglia under the spotlight, as loci associated with AD risk are enriched in genes expressed in microglia. Several of these genes have been recognized for their central roles in microglial functions. Increasing evidence suggests that SHIP1, the protein encoded by the AD-associated gene INPP5D, is an important regulator of microglial phagocytosis and immune response. A recent study from our group identified SHIP1 as a negative regulator of the NLRP3 inflammasome in human iPSC-derived microglial cells (iMGs). In addition, we found evidence for a connection between SHIP1 activity and inflammasome activation in the AD brain. The NLRP3 inflammasome is a multiprotein complex that induces the secretion of pro-inflammatory cytokines as part of innate immune responses against pathogens and endogenous damage signals. Previously published studies have suggested that the NLRP3 inflammasome is activated in AD and contributes to AD-related pathology. Here, we provide an overview of the current understanding of the microglial NLRP3 inflammasome in the context of AD-related inflammation. We then review the known intracellular functions of SHIP1, including its role in phosphoinositide signaling, interactions with microglial phagocytic receptors such as TREM2 and evidence for its intersection with NLRP3 inflammasome signaling. Through rigorous examination of the intricate connections between microglial signaling pathways across several experimental systems and postmortem analyses, the field will be better equipped to tailor newly emerging therapeutic strategies targeting microglia in neurodegenerative diseases.
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Affiliation(s)
- Gizem Terzioglu
- Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital and Harvard Medical School, 60 Fenwood Rd, Boston, MA, 02115, USA
| | - Tracy L Young-Pearse
- Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital and Harvard Medical School, 60 Fenwood Rd, Boston, MA, 02115, USA.
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112
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Bockstiegel J, Engelhardt J, Weindl G. P2X7 receptor activation leads to NLRP3-independent IL-1β release by human macrophages. Cell Commun Signal 2023; 21:335. [PMID: 37996864 PMCID: PMC10666422 DOI: 10.1186/s12964-023-01356-1] [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] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 10/14/2023] [Indexed: 11/25/2023] Open
Abstract
BACKGROUND The purinergic receptor P2X7 plays a crucial role in infection, inflammation, and cell death. It is thought that P2X7 receptor stimulation triggers processing and release of the pro-inflammatory cytokine interleukin (IL)-1β by activation of the NLRP3 inflammasome; however, the underlying mechanisms remain poorly understood. METHODS Modulation of IL-1β secretion was studied in THP-1 macrophages. Adenosine 5'-triphosphate (ATP), BzATP, nigericin and pharmacological inhibitors of P2X receptors, inflammatory caspases and the nucleotide-binding oligomerization domain-like receptor family pyrin domain-containing protein 3 (NLRP3) inflammasome were used to characterize signaling. RESULTS In primed macrophages, IL-1β release was increased after P2X7 receptor activation by ATP and 2,3-O-(4-benzoylbenzoyl)-ATP (BzATP). Pharmacological inhibition or genetic knockout of NLRP3 does not completely inhibit IL-1β release in TLR2/1-primed macrophages. Increase in extracellular K+ as well as inhibition of caspase-1 or serine proteases maintained IL-1β release in macrophages stimulated with P2X7 receptor agonists at 50%. CONCLUSIONS Our findings suggest a previously unrecognized mechanism of P2X7 receptor mediated IL-1β release and highlight the existence of an NLRP3-independent pathway in human macrophages. Video Abstract.
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Affiliation(s)
- Judith Bockstiegel
- Pharmacology and Toxicology Section, Pharmaceutical Institute, University of Bonn, 53121, Bonn, Germany
| | - Jonas Engelhardt
- Pharmacology and Toxicology Section, Pharmaceutical Institute, University of Bonn, 53121, Bonn, Germany
| | - Günther Weindl
- Pharmacology and Toxicology Section, Pharmaceutical Institute, University of Bonn, 53121, Bonn, Germany.
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113
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Krantz M, Eklund D, Särndahl E, Hedbrant A. A detailed molecular network map and model of the NLRP3 inflammasome. Front Immunol 2023; 14:1233680. [PMID: 38077364 PMCID: PMC10699087 DOI: 10.3389/fimmu.2023.1233680] [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: 06/02/2023] [Accepted: 10/16/2023] [Indexed: 12/18/2023] Open
Abstract
The NLRP3 inflammasome is a key regulator of inflammation that responds to a broad range of stimuli. The exact mechanism of activation has not been determined, but there is a consensus on cellular potassium efflux as a major common denominator. Once NLRP3 is activated, it forms high-order complexes together with NEK7 that trigger aggregation of ASC into specks. Typically, there is only one speck per cell, consistent with the proposal that specks form - or end up at - the centrosome. ASC polymerisation in turn triggers caspase-1 activation, leading to maturation and release of IL-1β and pyroptosis, i.e., highly inflammatory cell death. Several gain-of-function mutations in the NLRP3 inflammasome have been suggested to induce spontaneous activation of NLRP3 and hence contribute to development and disease severity in numerous autoinflammatory and autoimmune diseases. Consequently, the NLRP3 inflammasome is of significant clinical interest, and recent attention has drastically improved our insight in the range of involved triggers and mechanisms of signal transduction. However, despite recent progress in knowledge, a clear and comprehensive overview of how these mechanisms interplay to shape the system level function is missing from the literature. Here, we provide such an overview as a resource to researchers working in or entering the field, as well as a computational model that allows for evaluating and explaining the function of the NLRP3 inflammasome system from the current molecular knowledge. We present a detailed reconstruction of the molecular network surrounding the NLRP3 inflammasome, which account for each specific reaction and the known regulatory constraints on each event as well as the mechanisms of drug action and impact of genetics when known. Furthermore, an executable model from this network reconstruction is generated with the aim to be used to explain NLRP3 activation from priming and activation to the maturation and release of IL-1β and IL-18. Finally, we test this detailed mechanistic model against data on the effect of different modes of inhibition of NLRP3 assembly. While the exact mechanisms of NLRP3 activation remains elusive, the literature indicates that the different stimuli converge on a single activation mechanism that is additionally controlled by distinct (positive or negative) priming and licensing events through covalent modifications of the NLRP3 molecule. Taken together, we present a compilation of the literature knowledge on the molecular mechanisms on NLRP3 activation, a detailed mechanistic model of NLRP3 activation, and explore the convergence of diverse NLRP3 activation stimuli into a single input mechanism.
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Affiliation(s)
- Marcus Krantz
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- Inflammatory Response and Infection Susceptibility Centre (iRiSC), Örebro University, Örebro, Sweden
| | - Daniel Eklund
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- Inflammatory Response and Infection Susceptibility Centre (iRiSC), Örebro University, Örebro, Sweden
| | - Eva Särndahl
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- Inflammatory Response and Infection Susceptibility Centre (iRiSC), Örebro University, Örebro, Sweden
| | - Alexander Hedbrant
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- Inflammatory Response and Infection Susceptibility Centre (iRiSC), Örebro University, Örebro, Sweden
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114
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Liu Y, Zhai H, Alemayehu H, Boulanger J, Hopkins LJ, Borgeaud AC, Heroven C, Howe JD, Leigh KE, Bryant CE, Modis Y. Cryo-electron tomography of NLRP3-activated ASC complexes reveals organelle co-localization. Nat Commun 2023; 14:7246. [PMID: 37945612 PMCID: PMC10636019 DOI: 10.1038/s41467-023-43180-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 11/02/2023] [Indexed: 11/12/2023] Open
Abstract
NLRP3 induces caspase-1-dependent pyroptotic cell death to drive inflammation. Aberrant activity of NLRP3 occurs in many human diseases. NLRP3 activation induces ASC polymerization into a single, micron-scale perinuclear punctum. Higher resolution imaging of this signaling platform is needed to understand how it induces pyroptosis. Here, we apply correlative cryo-light microscopy and cryo-electron tomography to visualize ASC/caspase-1 in NLRP3-activated cells. The puncta are composed of branched ASC filaments, with a tubular core formed by the pyrin domain. Ribosomes and Golgi-like or endosomal vesicles permeate the filament network, consistent with roles for these organelles in NLRP3 activation. Mitochondria are not associated with ASC but have outer-membrane discontinuities the same size as gasdermin D pores, consistent with our data showing gasdermin D associates with mitochondria and contributes to mitochondrial depolarization.
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Affiliation(s)
- Yangci Liu
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge, CB2 0QH, UK
- Cambridge Institute of Therapeutic Immunology & Infectious Disease (CITIID), University of Cambridge School of Clinical Medicine, Cambridge, CB2 0AW, UK
| | - Haoming Zhai
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge, CB2 0QH, UK
- Cambridge Institute of Therapeutic Immunology & Infectious Disease (CITIID), University of Cambridge School of Clinical Medicine, Cambridge, CB2 0AW, UK
| | - Helen Alemayehu
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge, CB2 0QH, UK
- Cambridge Institute of Therapeutic Immunology & Infectious Disease (CITIID), University of Cambridge School of Clinical Medicine, Cambridge, CB2 0AW, UK
| | - Jérôme Boulanger
- MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge, CB2 0QH, UK
| | - Lee J Hopkins
- Department of Medicine, University of Cambridge, Box 157, Level 5, Addenbrooke's Hospital, Cambridge, CB2 0QQ, UK
- Department of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge, CB3 0ES, UK
- Wren Therapeutics, Clarendon House, Clarendon Road, Cambridge, CB2 8FH, UK
| | - Alicia C Borgeaud
- MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge, CB2 0QH, UK
- Institute of Biochemistry and Molecular Medicine, University of Bern, Bühlstrasse 28, 3012, Bern, Switzerland
| | - Christina Heroven
- MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge, CB2 0QH, UK
- Division of Structural Biology, University of Oxford, Oxford, OX3 7BN, UK
| | - Jonathan D Howe
- MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge, CB2 0QH, UK
| | - Kendra E Leigh
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge, CB2 0QH, UK
- Cambridge Institute of Therapeutic Immunology & Infectious Disease (CITIID), University of Cambridge School of Clinical Medicine, Cambridge, CB2 0AW, UK
| | - Clare E Bryant
- Department of Medicine, University of Cambridge, Box 157, Level 5, Addenbrooke's Hospital, Cambridge, CB2 0QQ, UK.
- Department of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge, CB3 0ES, UK.
| | - Yorgo Modis
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge, CB2 0QH, UK.
- Cambridge Institute of Therapeutic Immunology & Infectious Disease (CITIID), University of Cambridge School of Clinical Medicine, Cambridge, CB2 0AW, UK.
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115
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Bornancin F, Dekker C. A phospho-harmonic orchestra plays the NLRP3 score. Front Immunol 2023; 14:1281607. [PMID: 38022631 PMCID: PMC10654991 DOI: 10.3389/fimmu.2023.1281607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 10/23/2023] [Indexed: 12/01/2023] Open
Abstract
NLRP3 is a prototypical sensor protein connecting cellular stress to pro-inflammatory signaling. A complex array of regulatory steps is required to switch NLRP3 from an inactive state into a primed entity that is poised to assemble an inflammasome. Accumulating evidence suggests that post-translational mechanisms are critical. In particular, phosphorylation/dephosphorylation and ubiquitylation/deubiquitylation reactions have been reported to regulate NLRP3. Taken individually, several post-translational modifications appear to be essential. However, it remains difficult to understand how they may be coordinated, whether there is a unique sequence of regulatory steps accounting for the functional maturation of NLRP3, or whether the sequence is subject to variations depending on cell type, the stimulus, and other parameters such as the cellular context. This review will focus on the regulation of the NLRP3 inflammasome by phosphorylation and dephosphorylation, and on kinases and phosphatases that have been reported to modulate NLRP3 activity. The aim is to try to integrate the current understanding and highlight potential gaps for further studies.
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Affiliation(s)
| | - Carien Dekker
- Discovery Sciences Department, Novartis Biomedical Research, Basel, Switzerland
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116
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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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117
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Ramos-Tovar E, Muriel P. NLRP3 inflammasome in hepatic diseases: A pharmacological target. Biochem Pharmacol 2023; 217:115861. [PMID: 37863329 DOI: 10.1016/j.bcp.2023.115861] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 10/13/2023] [Accepted: 10/16/2023] [Indexed: 10/22/2023]
Abstract
The NOD-like receptor family pyrin domain containing 3 (NLRP3) inflammasome pathway is mainly responsible for the activation and release of a cascade of proinflammatory mediators that contribute to the development of hepatic diseases. During alcoholic liver disease development, the NLRP3 inflammasome pathway contributes to the maturation of caspase-1, interleukin (IL)-1β, and IL-18, which induce a robust inflammatory response, leading to fibrosis by inducing profibrogenic hepatic stellate cell (HSC) activation. Substantial evidence demonstrates that nonalcoholic fatty liver disease (NAFLD) progresses to nonalcoholic steatohepatitis (NASH) via NLRP3 inflammasome activation, ultimately leading to fibrosis and hepatocellular carcinoma (HCC). Activation of the NLRP3 inflammasome in NASH can be attributed to several factors, such as reactive oxygen species (ROS), gut dysbiosis, leaky gut, which allow triggers such as cardiolipin, cholesterol crystals, endoplasmic reticulum stress, and uric acid to reach the liver. Because inflammation triggers HSC activation, the NLRP3 inflammasome pathway performs a central function in fibrogenesis regardless of the etiology. Chronic hepatic activation of the NLRP3 inflammasome can ultimately lead to HCC; however, inflammation also plays a role in decreasing tumor growth. Some data indicate that NLRP3 inflammasome activation plays an important role in autoimmune hepatitis, but the evidence is scarce. Most researchers have reported that NLRP3 inflammasome activation is essential in liver injury induced by a variety of drugs and hepatotropic virus infection; however, few reports indicate that this pathway can play a beneficial role by inducing liver regeneration. Modulation of the NLRP3 inflammasome appears to be a suitable strategy to treat liver diseases.
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Affiliation(s)
- Erika Ramos-Tovar
- Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina-IPN, Apartado Postal 11340, Plan de San Luis y Díaz Mirón s/n, Casco de Santo Tomás, Ciudad de México, México
| | - Pablo Muriel
- Laboratorio de Hepatología Experimental, Departamento de Farmacología, Cinvestav-IPN, Apartado Postal 14-740, Ciudad de México, México.
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118
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Yao J, Wang Z, Song W, Zhang Y. Targeting NLRP3 inflammasome for neurodegenerative disorders. Mol Psychiatry 2023; 28:4512-4527. [PMID: 37670126 DOI: 10.1038/s41380-023-02239-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 08/18/2023] [Accepted: 08/24/2023] [Indexed: 09/07/2023]
Abstract
Neuroinflammation is a key pathological feature in neurological diseases, including Alzheimer's disease (AD). The nucleotide-binding domain leucine-rich repeat-containing proteins (NLRs) belong to the pattern recognition receptors (PRRs) family that sense stress signals, which play an important role in inflammation. As a member of NLRs, the NACHT, LRR and PYD domains-containing protein 3 (NLRP3) is predominantly expressed in microglia, the principal innate immune cells in the central nervous system (CNS). Microglia release proinflammatory cytokines to cause pyroptosis through activating NLRP3 inflammasome. The active NLRP3 inflammasome is involved in a variety of neurodegenerative diseases (NDs). Recent studies also indicate the key role of neuronal NLRP3 in the pathogenesis of neurological disorders. In this article, we reviewed the mechanisms of NLRP3 expression and activation and discussed the role of active NLRP3 inflammasome in the pathogenesis of NDs, particularly focusing on AD. The studies suggest that targeting NLRP3 inflammasome could be a novel approach for the disease modification.
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Affiliation(s)
- Jing Yao
- The National Clinical Research Center for Geriatric Disease, Xuanwu Hospital, Capital Medical University, 100053, Beijing, China
| | - Zhe Wang
- The National Clinical Research Center for Geriatric Disease, Xuanwu Hospital, Capital Medical University, 100053, Beijing, China
| | - Weihong Song
- The National Clinical Research Center for Geriatric Disease, Xuanwu Hospital, Capital Medical University, 100053, Beijing, China.
- Institute of Aging, Key Laboratory of Alzheimer's Disease of Zhejiang Province, Zhejiang Clinical Research Center for Mental Disorders, School of Mental Health and The Affiliated Kangning Hospital, Wenzhou Medical University, Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, 325000, Zhejiang, China.
| | - Yun Zhang
- The National Clinical Research Center for Geriatric Disease, Xuanwu Hospital, Capital Medical University, 100053, Beijing, China.
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Wang K, Liu H, Sun W, Guo J, Jiang Z, Xu S, Miao Z. Eucalyptol alleviates avermectin exposure-induced apoptosis and necroptosis of grass carp hepatocytes by regulating ROS/NLRP3 axis. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2023; 264:106739. [PMID: 37918148 DOI: 10.1016/j.aquatox.2023.106739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 10/17/2023] [Accepted: 10/28/2023] [Indexed: 11/04/2023]
Abstract
The wide application of Avermectin (AVM) has caused pollution of surface water and damage to non-target organisms. A growing body of evidence supports the most prominent role of Eucalyptol (EUC) is antioxidation. To the purpose of explore the injury mechanism of Avermectin on grass carp hepatocytes and the antagonistic effect of Eucalyptol, 5.7 μM AVM and/or 20 μM EUC were used to treat grass carp hepatocytes for 24 h to establish hepatocyte exposure model. The results showed that Avermectin exposure significantly increased the contents of reactive oxygen species (ROS) and malondialdehyde (MDA) in cells, reduced the activities of superoxide dismutase (SOD), catalase (CAT), and total antioxidant capacity (T-AOC). Also, the expressions of NLRP3 inflammasome-related genes including NLRP3, ASC, and Caspase-1, the necroptosis-related genes including RIPK1, RIPK3, and MLKL and apoptotic genes including Bax, Caspase-3, and Caspase-9 were all up-regulated. Meanwhile, the expressions of Caspase-8 and Bcl-2 were significantly decreased upon exposure to Avermectin. However, the toxicity was significantly alleviated with the treatment of EUC or N-acetyl-l-cysteine (NAC). The above results indicated that eucalyptol alleviated AVM exposure-induced apoptosis and necroptosis of grass carp hepatocytes by regulating the ROS/NLRP3 signaling pathway.
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Affiliation(s)
- Kun Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Huanyi Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Wenying Sun
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Jinming Guo
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Zhihui Jiang
- Henan Beiai Natural Product Application and Development Engineering Research Center, Anyang Institute of Technology, Anyang, Henan 455000, PR China
| | - Shiwen Xu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China; Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, PR China
| | - Zhiying Miao
- College of Veterinary Medicine, Northeast Agricultural University, HaRbin 150030, PR China.
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Wu S, Liao J, Hu G, Yan L, Su X, Ye J, Zhang C, Tian T, Wang H, Wang Y. Corilagin alleviates LPS-induced sepsis through inhibiting pyroptosis via targeting TIR domain of MyD88 and binding CARD of ASC in macrophages. Biochem Pharmacol 2023; 217:115806. [PMID: 37714273 DOI: 10.1016/j.bcp.2023.115806] [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: 07/13/2023] [Revised: 09/10/2023] [Accepted: 09/12/2023] [Indexed: 09/17/2023]
Abstract
Sepsis is a dysregulated systemic inflammatory response caused by infection that leads to multiple organ injury and high mortality without effective treatment. Corilagin, a natural polyphenol extracted from traditional Chinese herbs, exhibits strong anti-inflammatory properties. However, the role for Corilagin in lipopolysaccharide (LPS)-induced sepsis and the molecular mechanisms underlying this process have not been completely explored. Here we determine the effect of Corilagin on LPS-treated mice and use a screening approach integrating surface plasmon resonance with liquid chromatography-tandem mass spectrometry (SPR-LC-MS/MS) to further explore the therapeutic target of Corilagin. We discovered that Corilagin significantly prolonged the survival time of septic mice, attenuated the multi-organ injury and the expression of pyroptosis-related proteins in tissues of LPS-treated mice. In vitro studies revealed that Corilagin inhibited pyroptosis and NLRP3 inflammasome activation in LPS-treated macrophages followed with ATP stimulation, as reflected by decreased levels of GSDMD-NT and activated caspase-1, and reduced ASC specks formation. Mechanistically, Corilagin alleviated the formation of ASC specks and blocked the interaction of ASC and pro-caspase1 by competitively binding with the caspase recruitment domain (CARD) of ASC. Additionally, Corilagin interrupted the TLR4-MyD88 interaction through targeting TIR domain of MyD88, leading to the inhibition of NF-κB activation and NLRP3 production. In addition, Corilagin downregulated genes associated with several inflammatory responses and inflammasome-related signaling pathways in LPS-stimulated macrophages. Overall, our results indicate that the inhibitory effect of Corilagin on pyroptosis through targeting TIR domain of MyD88 and binding the CARD domain of ASC in macrophages plays an essential role in protection against LPS-induced sepsis.
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Affiliation(s)
- Senquan Wu
- Department of Respiratory and Critical Care Medicine, Dongguan People's Hospital, Dongguan 523059, China; Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, China
| | - Jia Liao
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, China
| | - Guodong Hu
- Department of Respiratory and Critical Care Medicine, Dongguan People's Hospital, Dongguan 523059, China
| | - Liang Yan
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, China
| | - Xingyu Su
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, China
| | - Jiezhou Ye
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, China
| | - Chanjuan Zhang
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, China
| | - Tian Tian
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, China
| | - Huadong Wang
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, China.
| | - Yiyang Wang
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou 510632, China.
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Zhang D, Ge F, Ji J, Li YJ, Zhang FR, Wang SY, Zhang SJ, Zhang DM, Chen M. β-sitosterol alleviates dextran sulfate sodium-induced experimental colitis via inhibition of NLRP3/Caspase-1/GSDMD-mediated pyroptosis. Front Pharmacol 2023; 14:1218477. [PMID: 37954856 PMCID: PMC10637366 DOI: 10.3389/fphar.2023.1218477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Accepted: 10/16/2023] [Indexed: 11/14/2023] Open
Abstract
Background: Inflammation-related NLRP3/Caspase-1/GSDMD-mediated pyroptosis is involved in the progression of ulcerative colitis (UC). β-sitosterol (SIT) was reported to have anti-inflammatory effects on experimental colitis, while the regulation of SIT on pyroptosis is unclear. Therefore, the present study aimed to define the protective and healing effects of SIT on dextran sulfate sodium (DSS)-induced experimental UC rats and human epithelial colorectal adenocarcinoma cells (Caco-2) and explore the underlying mechanisms that are responsible for its effects on NLRP3/Caspase-1/GSDMD-mediated pyroptosis in UC. Methods: UC model rats were established by oral 4% DSS. Following colitis injury, the animals received SIT (doses of 50, 100, and 200 mg/kg) treatment for 2 weeks. For in vitro study, we exposed Caco-2-50 mg/mL DSS with or without SIT (concentrations of 8 and 16 μg/mL). Disease activity index (DAI) and histopathological injury were assessed in vivo. Activation proteins of nuclear factor kappa B (NF-κB) signaling axis, and tight junction-related proteins of zonula occludens-1 (ZO-1) and occludin were detected in colon tissues. TNF-α, IL-1β, and IL-18 in serum and cell supernatant were measured by enzyme-linked immunosorbent assay (ELISA). Changes in NLRP3/Caspase-1/GSDMD-mediated pyroptosis signaling pathway activation were analyzed both in tissues and cells. Results: Our findings suggested that SIT treatment attenuated the severity of 4% DSS-induced UC by protecting rats from weight and colon length loss, and macroscopic damage. SIT also reduced proinflammatory factors production (TNF-α, IL-1β, and IL-18) in serum and cell supernatant. Mechanistically, SIT downregulated the expression levels of pyroptosis-related proteins including Caspase-1, cleaved-Caspase-1, NLRP3, GSDMD, and GSDMD-N in colon tissues and Caco-2 cells. Further analysis indicated that SIT maintained the colonic barrier integrity by enhancing the protein expression of ZO-1 and occludin. Conclusion: We confirmed that SIT exerts protective and therapeutic effects on DSS-induced colitis injury by suppressing NLRP3/Caspase-1/GSDMD-mediated pyroptosis and inflammation response. These findings demonstrated that SIT could be a potential medication for UC treatment.
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Affiliation(s)
- Di Zhang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Fei Ge
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Jing Ji
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Yu-Jing Li
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Fu-Rong Zhang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Shu-Yan Wang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Shu-Jing Zhang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Dong-Mei Zhang
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital, Affiliated Hospital of Beijing University of Chinese Medicine, Beijing, China
| | - Meng Chen
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
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Chen W, Luo Y, Quan J, Zhou J, Yi B, Huang Z. PM 2.5 induces renal tubular injury by activating NLRP3-mediated pyroptosis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 265:115490. [PMID: 37742582 DOI: 10.1016/j.ecoenv.2023.115490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 09/13/2023] [Accepted: 09/14/2023] [Indexed: 09/26/2023]
Abstract
Fine particulate matter (PM2.5)-related health issues have received increasing attention as a worldwide public health problem, and PM2.5-related chronic kidney disease (CKD) has been emerging over the years. Limited research has focused on the mechanism of PM2.5-induced kidney disease. To investigate the impact of PM2.5 on the kidney and its potential mechanism, we generated a PM2.5-exposed C57BL/6 mouse model by using Shanghai Meteorological and Environment Animal Exposure System (Shanghai-METAS) for 12 weeks, urine, blood and kidney tissues were collected. The pathological changes and the function of the kidney were measured after PM2.5 exposure for 12 weeks. Along with glomerular damage, tubular damage was also severe in PM2.5-induced mice. The results of mRNA-seq indicate that pyroptosis is involved. Pyroptosis is defined as caspase-1-dependent programmed cell death in response to insults. The expression of the nucleotide-binding and oligomerization domain-like receptor family pyrin domain containing 3 (NLRP3), Caspase-1, gasdermin D (GSDMD) and IL-1β was detected. NLRP3 inflammasome activation and subsequent pyroptosis were observed in PM2.5-exposed kidney tissues and PM2.5-exposed Bumpt cells too. At the meantime, the inhibitors of NLRP3 and caspase-1 were applied to the PM2.5 exposed Bumpt cells. It turned out to have a significant rescue effect of the inhibitors. This study revealed new insights into PM2.5-induced kidney injury and specific kidney pathological damage, as well as morphological changes, and defined the important role of pyroptosis in PM2.5-induced kidney dysfunction.
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Affiliation(s)
- Weilin Chen
- Department of Nephrology, The Third Xiangya Hospital, Central South University, 138 Tongzipo Road, Changsha 410013, Hunan, China; The Critical Kidney Disease Research Center of Central South University, 138 Tongzipo Road, Changsha 410013, Hunan, China
| | - Yanfang Luo
- Department of Nephrology, The Third Xiangya Hospital, Central South University, 138 Tongzipo Road, Changsha 410013, Hunan, China; The Critical Kidney Disease Research Center of Central South University, 138 Tongzipo Road, Changsha 410013, Hunan, China
| | - Jingjing Quan
- Department of Nephrology, The Third Xiangya Hospital, Central South University, 138 Tongzipo Road, Changsha 410013, Hunan, China; The Critical Kidney Disease Research Center of Central South University, 138 Tongzipo Road, Changsha 410013, Hunan, China
| | - Ji Zhou
- Typhoon Institute/CMA, Shanghai Key Laboratory of Meteorology and Health, Shanghai 200030, China
| | - Bin Yi
- Department of Nephrology, The Third Xiangya Hospital, Central South University, 138 Tongzipo Road, Changsha 410013, Hunan, China; The Critical Kidney Disease Research Center of Central South University, 138 Tongzipo Road, Changsha 410013, Hunan, China; Furong Laboratory, Changsha 410013, Hunan, China.
| | - Zhijun Huang
- Department of Nephrology, The Third Xiangya Hospital, Central South University, 138 Tongzipo Road, Changsha 410013, Hunan, China; Furong Laboratory, Changsha 410013, Hunan, China; Center for Clinical Pharmacology, The Third Xiangya Hospital, Central South University, Changsha 410013, Hunan, China.
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Zheng X, Zhao D, Jin Y, Liu Y, Liu D. Role of the NLRP3 inflammasome in gynecological disease. Biomed Pharmacother 2023; 166:115393. [PMID: 37660654 DOI: 10.1016/j.biopha.2023.115393] [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: 07/04/2023] [Revised: 08/20/2023] [Accepted: 08/26/2023] [Indexed: 09/05/2023] Open
Abstract
The NLR family pyrin domain containing 3 (NLRP3) inflammasome is involved in the innate immune system and is a three-part macromolecular complex comprising the NLRP3 protein, apoptosis-associated speck-like protein containing a CARD (ASC) and the cysteine protease pro-caspase-1. When the NLRP3 inflammasome is activated, it can produce interleukin (IL)- 1β and IL-18 and eventually lead to inflammatory cell pyroptosis. Related studies have demonstrated that the NLRP3 inflammasome can induce an immune response and is related to the occurrence and development of gynecological diseases, such as endometriosis, polycystic ovary syndrome and breast cancer. NLRP3 inflammasome inhibitors are beneficial for maintaining cellular homeostasis and tissue health and have been found effective in targeting some gynecological diseases. However, excessive inhibitor concentrations have been found to cause adverse effects. Therefore, proper control of NLRP3 inflammasome activity is critical. This paper summarizes the structure and function of the NLRP3 inflammasome and highlights the therapeutic potential of targeting it in gynecological diseases, such as endometriosis, polycystic ovary syndrome and breast cancer The application of NLRP3 inflammasome inhibitors is also discussed.
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Affiliation(s)
- Xu Zheng
- College of Acupuncture and Massage, Changchun University of Chinese Medicine, Changchun 130117, Jilin, China
| | - Dan Zhao
- College of Acupuncture and Massage, Changchun University of Chinese Medicine, Changchun 130117, Jilin, China
| | - Ye Jin
- School of Pharmacy, Changchun University of Chinese Medicine, Changchun 130117, Jilin, China.
| | - Yang Liu
- Acupuncture department,Affiliated Hospital of Changchun University of Chinese Medicine, Changchun 130117, Jilin, China.
| | - Da Liu
- School of Pharmacy, Changchun University of Chinese Medicine, Changchun 130117, Jilin, China.
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Muslimov A, Tereshchenko V, Shevyrev D, Rogova A, Lepik K, Reshetnikov V, Ivanov R. The Dual Role of the Innate Immune System in the Effectiveness of mRNA Therapeutics. Int J Mol Sci 2023; 24:14820. [PMID: 37834268 PMCID: PMC10573212 DOI: 10.3390/ijms241914820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 09/24/2023] [Accepted: 09/28/2023] [Indexed: 10/15/2023] Open
Abstract
Advances in molecular biology have revolutionized the use of messenger RNA (mRNA) as a therapeutic. The concept of nucleic acid therapy with mRNA originated in 1990 when Wolff et al. reported successful expression of proteins in target organs by direct injection of either plasmid DNA or mRNA. It took decades to bring the transfection efficiency of mRNA closer to that of DNA. The next few decades were dedicated to turning in vitro-transcribed (IVT) mRNA from a promising delivery tool for gene therapy into a full-blown therapeutic modality, which changed the biotech market rapidly. Hundreds of clinical trials are currently underway using mRNA for prophylaxis and therapy of infectious diseases and cancers, in regenerative medicine, and genome editing. The potential of IVT mRNA to induce an innate immune response favors its use for vaccination and immunotherapy. Nonetheless, in non-immunotherapy applications, the intrinsic immunostimulatory activity of mRNA directly hinders the desired therapeutic effect since it can seriously impair the target protein expression. Targeting the same innate immune factors can increase the effectiveness of mRNA therapeutics for some indications and decrease it for others, and vice versa. The review aims to present the innate immunity-related 'barriers' or 'springboards' that may affect the development of immunotherapies and non-immunotherapy applications of mRNA medicines.
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Affiliation(s)
- Albert Muslimov
- Scientific Center for Translational Medicine, Sirius University of Science and Technology, Olympic Ave 1, 354340 Sirius, Russia; (V.T.); (D.S.); (V.R.); (R.I.)
- Laboratory of Nano- and Microencapsulation of Biologically Active Substances, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia;
- RM Gorbacheva Research Institute, Pavlov University, L’va Tolstogo 6-8, 197022 St. Petersburg, Russia;
| | - Valeriy Tereshchenko
- Scientific Center for Translational Medicine, Sirius University of Science and Technology, Olympic Ave 1, 354340 Sirius, Russia; (V.T.); (D.S.); (V.R.); (R.I.)
| | - Daniil Shevyrev
- Scientific Center for Translational Medicine, Sirius University of Science and Technology, Olympic Ave 1, 354340 Sirius, Russia; (V.T.); (D.S.); (V.R.); (R.I.)
| | - Anna Rogova
- Laboratory of Nano- and Microencapsulation of Biologically Active Substances, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia;
- Saint-Petersburg Chemical-Pharmaceutical University, Professora Popova 14, 197376 St. Petersburg, Russia
- School of Physics and Engineering, ITMO University, Lomonosova 9, 191002 St. Petersburg, Russia
| | - Kirill Lepik
- RM Gorbacheva Research Institute, Pavlov University, L’va Tolstogo 6-8, 197022 St. Petersburg, Russia;
| | - Vasiliy Reshetnikov
- Scientific Center for Translational Medicine, Sirius University of Science and Technology, Olympic Ave 1, 354340 Sirius, Russia; (V.T.); (D.S.); (V.R.); (R.I.)
- Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, Prospekt Akad. Lavrentyeva 10, 630090 Novosibirsk, Russia
| | - Roman Ivanov
- Scientific Center for Translational Medicine, Sirius University of Science and Technology, Olympic Ave 1, 354340 Sirius, Russia; (V.T.); (D.S.); (V.R.); (R.I.)
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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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126
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Chou WC, Jha S, Linhoff MW, Ting JPY. The NLR gene family: from discovery to present day. Nat Rev Immunol 2023; 23:635-654. [PMID: 36973360 PMCID: PMC11171412 DOI: 10.1038/s41577-023-00849-x] [Citation(s) in RCA: 43] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/15/2023] [Indexed: 03/29/2023]
Abstract
The mammalian NLR gene family was first reported over 20 years ago, although several genes that were later grouped into the family were already known at that time. Although it is widely known that NLRs include inflammasome receptors and/or sensors that promote the maturation of caspase 1, IL-1β, IL-18 and gasdermin D to drive inflammation and cell death, the other functions of NLR family members are less well appreciated by the scientific community. Examples include MHC class II transactivator (CIITA), a master transcriptional activator of MHC class II genes, which was the first mammalian NBD-LRR-containing protein to be identified, and NLRC5, which regulates the expression of MHC class I genes. Other NLRs govern key inflammatory signalling pathways or interferon responses, and several NLR family members serve as negative regulators of innate immune responses. Multiple NLRs regulate the balance of cell death, cell survival, autophagy, mitophagy and even cellular metabolism. Perhaps the least discussed group of NLRs are those with functions in the mammalian reproductive system. The focus of this Review is to provide a synopsis of the NLR family, including both the intensively studied and the underappreciated members. We focus on the function, structure and disease relevance of NLRs and highlight issues that have received less attention in the NLR field. We hope this may serve as an impetus for future research on the conventional and non-conventional roles of NLRs within and beyond the immune system.
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Affiliation(s)
- Wei-Chun Chou
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Sushmita Jha
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur, Jodhpur, India
| | - Michael W Linhoff
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
| | - Jenny P-Y Ting
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
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Wang J, Hua S, Bao H, Yuan J, Zhao Y, Chen S. Pyroptosis and inflammasomes in cancer and inflammation. MedComm (Beijing) 2023; 4:e374. [PMID: 37752941 PMCID: PMC10518439 DOI: 10.1002/mco2.374] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 08/20/2023] [Accepted: 08/22/2023] [Indexed: 09/28/2023] Open
Abstract
Nonprogrammed cell death (NPCD) and programmed cell death (PCD) are two types of cell death. Cell death is significantly linked to tumor development, medication resistance, cancer recurrence, and metastatic dissemination. Therefore, a comprehensive understanding of cell death is essential for the treatment of cancer. Pyroptosis is a kind of PCD distinct from autophagy and apoptosis in terms of the structure and function of cells. The defining features of pyroptosis include the release of an inflammatory cascade reaction and the expulsion of lysosomes, inflammatory mediators, and other cellular substances from within the cell. Additionally, it displays variations in osmotic pressure both within and outside the cell. Pyroptosis, as evidenced by a growing body of research, is critical for controlling the development of inflammatory diseases and cancer. In this paper, we reviewed the current level of knowledge on the mechanism of pyroptosis and inflammasomes and their connection to cancer and inflammatory diseases. This article presents a theoretical framework for investigating the potential of therapeutic targets in cancer and inflammatory diseases, overcoming medication resistance, establishing nanomedicines associated with pyroptosis, and developing risk prediction models in refractory cancer. Given the link between pyroptosis and the emergence of cancer and inflammatory diseases, pyroptosis-targeted treatments may be a cutting-edge treatment strategy.
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Affiliation(s)
- Jie‐Lin Wang
- Department of Obstetrics and GynecologyGuangzhou Key Laboratory of Targeted Therapy for Gynecologic OncologyGuangdong Provincial Key Laboratory of Major Obstetric DiseasesThe Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina
- Department of Gynecologic Oncology Research OfficeGuangzhou Key Laboratory of Targeted Therapy for Gynecologic OncologyGuangdong Provincial Key Laboratory of Major Obstetric DiseasesThe Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina
| | - Sheng‐Ni Hua
- Department of Radiation OncologyZhuhai Peoples HospitalZhuhai Hospital Affiliated with Jinan UniversityZhuhaiChina
| | - Hai‐Juan Bao
- Department of Obstetrics and GynecologyGuangzhou Key Laboratory of Targeted Therapy for Gynecologic OncologyGuangdong Provincial Key Laboratory of Major Obstetric DiseasesThe Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina
- Department of Gynecologic Oncology Research OfficeGuangzhou Key Laboratory of Targeted Therapy for Gynecologic OncologyGuangdong Provincial Key Laboratory of Major Obstetric DiseasesThe Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina
| | - Jing Yuan
- Department of Obstetrics and GynecologyGuangzhou Key Laboratory of Targeted Therapy for Gynecologic OncologyGuangdong Provincial Key Laboratory of Major Obstetric DiseasesThe Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina
- Department of Gynecologic Oncology Research OfficeGuangzhou Key Laboratory of Targeted Therapy for Gynecologic OncologyGuangdong Provincial Key Laboratory of Major Obstetric DiseasesThe Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina
| | - Yang Zhao
- Department of Obstetrics and GynecologyGuangzhou Key Laboratory of Targeted Therapy for Gynecologic OncologyGuangdong Provincial Key Laboratory of Major Obstetric DiseasesThe Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina
- Department of Gynecologic Oncology Research OfficeGuangzhou Key Laboratory of Targeted Therapy for Gynecologic OncologyGuangdong Provincial Key Laboratory of Major Obstetric DiseasesThe Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina
| | - Shuo Chen
- Department of Obstetrics and GynecologyGuangzhou Key Laboratory of Targeted Therapy for Gynecologic OncologyGuangdong Provincial Key Laboratory of Major Obstetric DiseasesThe Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina
- Department of Gynecologic Oncology Research OfficeGuangzhou Key Laboratory of Targeted Therapy for Gynecologic OncologyGuangdong Provincial Key Laboratory of Major Obstetric DiseasesThe Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina
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Li M, Wang M, Wen Y, Zhang H, Zhao G, Gao Q. Signaling pathways in macrophages: molecular mechanisms and therapeutic targets. MedComm (Beijing) 2023; 4:e349. [PMID: 37706196 PMCID: PMC10495745 DOI: 10.1002/mco2.349] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 07/24/2023] [Accepted: 07/27/2023] [Indexed: 09/15/2023] Open
Abstract
Macrophages play diverse roles in development, homeostasis, and immunity. Accordingly, the dysfunction of macrophages is involved in the occurrence and progression of various diseases, such as coronavirus disease 2019 and atherosclerosis. The protective or pathogenic effect that macrophages exert in different conditions largely depends on their functional plasticity, which is regulated via signal transduction such as Janus kinase-signal transducer and activator of transcription, Wnt and Notch pathways, stimulated by environmental cues. Over the past few decades, the molecular mechanisms of signaling pathways in macrophages have been gradually elucidated, providing more alternative therapeutic targets for diseases treatment. Here, we provide an overview of the basic physiology of macrophages and expound the regulatory pathways within them. We also address the crucial role macrophages play in the pathogenesis of diseases, including autoimmune, neurodegenerative, metabolic, infectious diseases, and cancer, with a focus on advances in macrophage-targeted strategies exploring modulation of components and regulators of signaling pathways. Last, we discuss the challenges and possible solutions of macrophage-targeted therapy in clinical applications. We hope that this comprehensive review will provide directions for further research on therapeutic strategies targeting macrophage signaling pathways, which are promising to improve the efficacy of disease treatment.
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Affiliation(s)
- Ming Li
- Department of Gynecological OncologyTongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- National Clinical Research Center for Obstetrics and GynecologyCancer Biology Research Center (Key Laboratory of the Ministry of Education)Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Mengjie Wang
- Department of Gynecological OncologyTongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- National Clinical Research Center for Obstetrics and GynecologyCancer Biology Research Center (Key Laboratory of the Ministry of Education)Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Yuanjia Wen
- Department of Gynecological OncologyTongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- National Clinical Research Center for Obstetrics and GynecologyCancer Biology Research Center (Key Laboratory of the Ministry of Education)Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Hongfei Zhang
- Department of Gynecological OncologyTongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- National Clinical Research Center for Obstetrics and GynecologyCancer Biology Research Center (Key Laboratory of the Ministry of Education)Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Guang‐Nian Zhao
- Department of Gynecological OncologyTongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- National Clinical Research Center for Obstetrics and GynecologyCancer Biology Research Center (Key Laboratory of the Ministry of Education)Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Qinglei Gao
- Department of Gynecological OncologyTongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- National Clinical Research Center for Obstetrics and GynecologyCancer Biology Research Center (Key Laboratory of the Ministry of Education)Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
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Chen Y, Miao C, Zhao Y, Yang L, Wang R, Shen D, Ren N, Zhang Q. Inflammasomes in human reproductive diseases. Mol Hum Reprod 2023; 29:gaad035. [PMID: 37788097 DOI: 10.1093/molehr/gaad035] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 09/20/2023] [Indexed: 10/05/2023] Open
Abstract
Inflammasomes are multi-protein complexes localized within immune and non-immune cells that induce caspase activation, proinflammatory cytokine secretion, and ultimately pyroptosis-a type of cell death. Inflammasomes are involved in a variety of human diseases, especially acute or chronic inflammatory diseases. In this review, we focused on the strong correlation between the NLRP3 inflammasome and various reproductive diseases, including ovarian aging or premature ovarian insufficiency, PCOS, endometriosis, recurrent spontaneous abortion, preterm labor, pre-eclampsia, and male subfertility, as well as the multifaceted role of NLRP3 in the pathogenesis and treatment of these diseases. In addition, we provide an overview of the structure and amplification of inflammasomes. This comprehensive review demonstrates the vital role of NLRP3 inflammasome activation in human reproductive diseases together with the underlying mechanisms, offers new insights for mechanistic studies of reproduction, and provides promising possibilities for the development of drugs targeting the NLRP3 inflammasome for the treatment of reproductive disorders in the future.
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Affiliation(s)
- Yun Chen
- Department of TCM Gynecology, Hangzhou TCM Hospital affiliated to Zhejiang Chinese Medical University, Hangzhou, China
| | - Chenyun Miao
- Department of TCM Gynecology, Hangzhou TCM Hospital affiliated to Zhejiang Chinese Medical University, Hangzhou, China
| | - Ying Zhao
- Department of TCM Gynecology, Hangzhou TCM Hospital affiliated to Zhejiang Chinese Medical University, Hangzhou, China
| | - Liuqing Yang
- Department of TCM Gynecology, Hangzhou TCM Hospital affiliated to Zhejiang Chinese Medical University, Hangzhou, China
| | - Ruye Wang
- Department of TCM Gynecology, Hangzhou TCM Hospital affiliated to Zhejiang Chinese Medical University, Hangzhou, China
| | - Dan Shen
- Department of TCM Gynecology, Hangzhou TCM Hospital affiliated to Zhejiang Chinese Medical University, Hangzhou, China
| | - Ning Ren
- Department of TCM Gynecology, Hangzhou TCM Hospital affiliated to Zhejiang Chinese Medical University, Hangzhou, China
| | - Qin Zhang
- Department of TCM Gynecology, Hangzhou TCM Hospital affiliated to Zhejiang Chinese Medical University, Hangzhou, China
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Ahmad B, Achek A, Farooq M, Choi S. Accelerated NLRP3 inflammasome-inhibitory peptide design using a recurrent neural network model and molecular dynamics simulations. Comput Struct Biotechnol J 2023; 21:4825-4835. [PMID: 37854633 PMCID: PMC10579963 DOI: 10.1016/j.csbj.2023.09.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 09/27/2023] [Accepted: 09/27/2023] [Indexed: 10/20/2023] Open
Abstract
Anomalous NLRP3 inflammasome responses have been linked to multiple health issues, including but not limited to atherosclerosis, diabetes, metabolic syndrome, cardiovascular disease, and neurodegenerative disease. Thus, targeting NLRP3 and modulating its associated immune response might be a promising strategy for developing new anti-inflammatory drugs. Herein, we report a computational method for de novo peptide design for targeting NLRP3 inflammasomes. The described method leverages a long-short-term memory (LSTM) network based on a recurrent neural network (RNN) to model a valuable latent space of molecules. The resulting classifiers are utilized to guide the selection of molecules generated by the model based on circular dichroism spectra and physicochemical features derived from high-throughput molecular dynamics simulations. Of the experimentally tested sequences, 60% of the peptides showed NLRP3-mediated inhibition of IL-1β and IL-18. One peptide displayed high potency against NLRP3-mediated IL-1β inhibition. However, NLRC4 and AIM2 inflammasome-mediated IL-1β secretion was uninterrupted by this peptide, demonstrating its selectivity toward the NLRP3 inflammasome. Overall, these results indicate that deep learning and molecular dynamics can accelerate the discovery of NLRP3 inhibitors with potent and selective activity.
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Affiliation(s)
- Bilal Ahmad
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, South Korea
- S&K Therapeutics, Ajou University, Campus Plaza 418, Worldcup-ro 199, Yeongtong-gu, Suwon 16502, South Korea
| | - Asma Achek
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, South Korea
- Technology Development Platform, Institut Pasteur Korea, Seongnam 13488, Soouth Korea
| | - Mariya Farooq
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, South Korea
- S&K Therapeutics, Ajou University, Campus Plaza 418, Worldcup-ro 199, Yeongtong-gu, Suwon 16502, South Korea
| | - Sangdun Choi
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, South Korea
- S&K Therapeutics, Ajou University, Campus Plaza 418, Worldcup-ro 199, Yeongtong-gu, Suwon 16502, South Korea
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Abdelhady R, Saber S, Ahmed Abdel-Reheim M, Mohammad S. Alamri M, Alfaifi J, I. E. Adam M, A. Saleh L, I. Farag A, A. Elmorsy E, S. El-Wakeel H, S. Doghish A, E. Shaker M, H. Hazem S, A. Ramadan H, S. Hamad R, A. Mohammed O. Unveiling the therapeutic potential of exogenous β-hydroxybutyrate for chronic colitis in rats: novel insights on autophagy, apoptosis, and pyroptosis. Front Pharmacol 2023; 14:1239025. [PMID: 37841914 PMCID: PMC10570820 DOI: 10.3389/fphar.2023.1239025] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 09/05/2023] [Indexed: 10/15/2023] Open
Abstract
Ulcerative colitis (UC) is a chronic relapsing inflammatory disease of the colorectal area that demonstrates a dramatically increasing incidence worldwide. This study provides novel insights into the capacity of the exogenous β-hydroxybutyrate and ketogenic diet (KD) consumption to alleviate dextran sodium sulfate (DSS)-induced UC in rats. Remarkably, both interventions attenuated disease activity and colon weight-to-length ratio, and improved macro and microstructures of the damaged colon. Importantly, both β-hydroxybutyrate and KD curbed the DSS-induced aberrant NLRP3 inflammasome activation as observed in mRNA and protein expression analysis. Additionally, inhibition of the NLRP3/NGSDMD-mediated pyroptosis was detected in response to both regimens. In parallel, these modalities attenuated caspase-1 and its associated consequences of IL-1β and IL-18 overproduction. They also mitigated apoptosis as indicated by the inactivation of caspase-3. The anti-inflammatory effects of BHB and KD were confirmed by the reported decline in the levels of inflammatory markers including MPO, NFκB, IL-6, and TNF-α. Moreover, these interventions exhibited antioxidative properties by reducing ROS production and improving antioxidative enzymes. Their effectiveness in mitigating UC was also evident in the renovation of normal intestinal epithelial barrier function, as shown by correcting the discrepancies in the levels of tight junction proteins ZO-1, OCLN, and CLDN5. Furthermore, their effects on the intestinal microbiota homeostasis were investigated. In terms of autophagy, exogenous β-hydroxybutyrate upregulated BECN-1 and downregulated p62, which may account for its superiority over KD in attenuating colonic damage. In conclusion, this study provides experimental evidence supporting the potential therapeutic use of β-hydroxybutyrate or β-hydroxybutyrate-boosting regimens in UC.
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Affiliation(s)
- Rasha Abdelhady
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Fayoum University, Fayoum, Egypt
| | - Sameh Saber
- Department of Pharmacology, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, Egypt
| | - Mustafa Ahmed Abdel-Reheim
- Department of Pharmaceutical Sciences, College of Pharmacy, Shaqra University, Shaqra, Saudi Arabia
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Beni-Suef University, Beni Suef, Egypt
| | | | - Jaber Alfaifi
- Department of Child Health, College of Medicine, University of Bisha, Bisha, Saudi Arabia
| | - Masoud I. E. Adam
- Department of Medical Education and Internal Medicine, College of Medicine, University of Bisha, Bisha, Saudi Arabia
| | - Lobna A. Saleh
- Department of Clinical Pharmacology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
- Department of Pharmacology and Toxicology, Collage of Pharmacy, Taif University, Taif, Saudi Arabia
| | - Azza I. Farag
- Department of Human Anatomy and Embryology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Elsayed A. Elmorsy
- Department of Pharmacology and Therapeutics, Qassim College of Medicine, Qassim University, Buraydah, Saudi Arabia
- Department of Clinical Pharmacology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Hend S. El-Wakeel
- Physiology Department, Benha Faculty of Medicine, Benha University, Banha, Egypt
- Physiology Department, Al-baha Faculty of Medicine, Al-baha University, Al-Baha, Saudi Arabia
| | - Ahmed S. Doghish
- Department of Biochemistry, Faculty of Pharmacy, Badr University in Cairo (BUC), Cairo, Egypt
- Department of Biochemistry and Molecular Biology, Faculty of Pharmacy (Boys), Al-Azhar University, Cairo, Egypt
| | - Mohamed E. Shaker
- Department of Pharmacology, College of Pharmacy, Jouf University, Sakaka, Saudi Arabia
| | - Sara H. Hazem
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Heba A. Ramadan
- Department of Microbiology and Immunology, Faculty of Pharmacy, Delta University for Science and Technology, Al Mansurah, Egypt
| | - Rabab S. Hamad
- Biological Sciences Department, College of Science, King Faisal University, Al Ahsa, Saudi Arabia
- Central Laboratory, Theodor Bilharz Research Institute, Giza, Egypt
| | - Osama A. Mohammed
- Department of Clinical Pharmacology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
- Department of Clinical Pharmacology, College of Medicine, University of Bisha, Bisha, Saudi Arabia
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Acevedo W, Morán-Figueroa R, Vargas-Chacoff L, Morera FJ, Pontigo JP. Revealing the Salmo salar NLRP3 Inflammasome: Insights from Structural Modeling and Transcriptome Analysis. Int J Mol Sci 2023; 24:14556. [PMID: 37834004 PMCID: PMC10572965 DOI: 10.3390/ijms241914556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 09/14/2023] [Accepted: 09/15/2023] [Indexed: 10/15/2023] Open
Abstract
The NLRP3, one of the most heavily studied inflammasome-related proteins in mammals, remains inadequately characterized in Atlantic salmon (Salmo salar), despite the significant commercial importance of this salmonid. The NLRP3 inflammasome is composed of the NLRP3 protein, which is associated with procaspase-1 via an adapter molecule known as ASC. This work aims to characterize the Salmo salar NLRP3 inflammasome through in silico structural modeling, functional transcript expression determination in the SHK-1 cell line in vitro, and a transcriptome analysis on Atlantic salmon. The molecular docking results suggested a similar arrangement of the ternary complex between NLRP3, ASC, and caspase-1 in both the Atlantic salmon and the mammalian NLRP3 inflammasomes. Moreover, the expression results confirmed the functionality of the SsNLRP3 inflammasome in the SHK-1 cells, as evidenced by the lipopolysaccharide-induced increase in the transcription of genes involved in inflammasome activation, including ASC and NLRP3. Additionally, the transcriptome results revealed that most of the inflammasome-related genes, including ASC, NLRP3, and caspase-1, were down-regulated in the Atlantic salmon following its adaptation to seawater (also known as parr-smolt transformation). This is correlated with a temporary detrimental effected on the immune system. Collectively, these findings offer novel insights into the evolutionarily conserved role of NLRP3.
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Affiliation(s)
- Waldo Acevedo
- Biological Chemistry Laboratory, Institute of Chemistry, Faculty of Science, Pontificia Universidad Católica de Valparaíso, Valparaiso 2373223, Chile;
| | - Rodrigo Morán-Figueroa
- Escuela de Medicina Veterinaria, Facultad de Agronomía y Sistemas Naturales, Pontificia Universidad Católica de Chile, Santiago 7810000, Chile;
- Escuela de Medicina Veterinaria, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago 7810000, Chile
- Escuela de Medicina Veterinaria, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago 7810000, Chile
| | - Luis Vargas-Chacoff
- Institute of Marine Sciences and Limnology, Faculty of Sciences, Universidad Austral de Chile, Valdivia 5110566, Chile;
- IDEAL Research Center for Dynamics of High Latitude Marine Ecosystems, Universidad Austral de Chile, Valdivia 5110566, Chile
- Millennium Institute Biodiversity of Antarctic and Subantarctic Ecosystems, BASE, University Austral of Chile, Valdivia 5090000, Chile
- Integrative Biology Group, Valdivia 5110566, Chile
| | - Francisco J. Morera
- Escuela de Medicina Veterinaria, Facultad de Agronomía y Sistemas Naturales, Pontificia Universidad Católica de Chile, Santiago 7810000, Chile;
- Escuela de Medicina Veterinaria, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago 7810000, Chile
- Escuela de Medicina Veterinaria, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago 7810000, Chile
- Integrative Biology Group, Valdivia 5110566, Chile
| | - Juan Pablo Pontigo
- Laboratorio Institucional de Investigación, Facultad Ciencias de la Naturaleza, Medicina Veterinaria, Universidad San Sebastián, Lago Panguipulli 1390, Puerto Montt 5090000, Chile
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133
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Wong MP, Juan EYW, Chelluri SS, Wang P, Pahmeier F, Castillo-Rojas B, Blanc SF, Biering SB, Vance RE, Harris E. The Inflammasome Pathway is Activated by Dengue Virus Non-structural Protein 1 and is Protective During Dengue Virus Infection. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.09.21.558875. [PMID: 37790301 PMCID: PMC10543007 DOI: 10.1101/2023.09.21.558875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Dengue virus (DENV) is a medically important flavivirus causing an estimated 50-100 million dengue cases annually, some of whom progress to severe disease. DENV non-structural protein 1 (NS1) is secreted from infected cells and has been implicated as a major driver of dengue pathogenesis by inducing endothelial barrier dysfunction. However, less is known about how DENV NS1 interacts with immune cells and what role these interactions play. Here we report that DENV NS1 can trigger activation of inflammasomes, a family of cytosolic innate immune sensors that respond to infectious and noxious stimuli, in mouse and human macrophages. DENV NS1 induces the release of IL-1β in a caspase-1 dependent manner. Additionally, we find that DENV NS1-induced inflammasome activation is independent of the NLRP3, Pyrin, and AIM2 inflammasome pathways, but requires CD14. Intriguingly, DENV NS1-induced inflammasome activation does not induce pyroptosis and rapid cell death; instead, macrophages maintain cellular viability while releasing IL-1β. Lastly, we show that caspase-1/11-deficient, but not NLRP3-deficient, mice are more susceptible to lethal DENV infection. Together, these results indicate that the inflammasome pathway acts as a sensor of DENV NS1 and plays a protective role during infection.
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Affiliation(s)
- Marcus P Wong
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, Berkeley, CA, USA
- Infectious Diseases and Immunity Graduate Group, School of Public Health, University of California, Berkeley, Berkeley, CA, USA
| | - Evan Y W Juan
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, Berkeley, CA, USA
| | - Sai S Chelluri
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, Berkeley, CA, USA
| | - Phoebe Wang
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, Berkeley, CA, USA
| | - Felix Pahmeier
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, Berkeley, CA, USA
- Infectious Diseases and Immunity Graduate Group, School of Public Health, University of California, Berkeley, Berkeley, CA, USA
| | - Bryan Castillo-Rojas
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, Berkeley, CA, USA
| | - Sophie F Blanc
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, Berkeley, CA, USA
| | - Scott B Biering
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, Berkeley, CA, USA
| | - Russell E Vance
- Division of Immunology and Molecular Medicine, Department of Molecular and Cell Biology University of California, Berkeley, Berkeley, CA, USA
- Howard Hughes Medical Institute, University of California, Berkeley, California, USA
| | - Eva Harris
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, Berkeley, CA, USA
- Infectious Diseases and Immunity Graduate Group, School of Public Health, University of California, Berkeley, Berkeley, CA, USA
- Division of Immunology and Molecular Medicine, Department of Molecular and Cell Biology University of California, Berkeley, Berkeley, CA, USA
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134
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Broz P. Unconventional protein secretion by gasdermin pores. Semin Immunol 2023; 69:101811. [PMID: 37473560 DOI: 10.1016/j.smim.2023.101811] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 07/14/2023] [Accepted: 07/14/2023] [Indexed: 07/22/2023]
Abstract
Unconventional protein secretion (UPS) allows the release of specific leaderless proteins independently of the classical endoplasmic reticulum (ER)-Golgi secretory pathway. While it remains one of the least understood mechanisms in cell biology, UPS plays an essential role in immunity as it controls the release of the IL-1 family of cytokines, which coordinate host defense and inflammatory responses. The unconventional secretion of IL-1β and IL-18, the two most prominent members of the IL-1 family, is initiated by inflammasome complexes - cytosolic signaling platforms that are assembled in response to infectious or noxious stimuli. Inflammasomes activate inflammatory caspases that proteolytically mature IL-1β/- 18, but also induce pyroptosis, a lytic form of cell death. Pyroptosis is caused by gasdermin-D (GSDMD), a member of the gasdermin protein family, which is activated by caspase cleavage and forms large β-barrel plasma membrane pores. This pore-forming activity is shared with other family members that are activated during infection or upon treatment with chemotherapy drugs. While the induction of cell death was assumed to be the main function of gasdermin pores, accumulating evidence suggests that they have also non-lytic functions, such as in the release of cytokines and alarmins, or in regulating ion fluxes. This has raised the possibility that gasdermin pores are one of the main mediators of UPS. Here, I summarize and discuss new insights into gasdermin activation and pore formation, how gasdermin pores achieve selective cargo release, and how gasdermin pore formation and ninjurin-1-driven plasma membrane rupture are executed and regulated.
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Affiliation(s)
- Petr Broz
- Department of Immunobiology, University of Lausanne, Switzerland.
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135
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Kadoya H, Hirano A, Umeno R, Kajimoto E, Iwakura T, Kondo M, Wada Y, Kidokoro K, Kishi S, Nagasu H, Sasaki T, Taniguchi S, Takahashi M, Kashihara N. Activation of the inflammasome drives peritoneal deterioration in a mouse model of peritoneal fibrosis. FASEB J 2023; 37:e23129. [PMID: 37606578 DOI: 10.1096/fj.202201777rrr] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 07/10/2023] [Accepted: 07/25/2023] [Indexed: 08/23/2023]
Abstract
During peritoneal dialysis (PD), the peritoneum is exposed to a bioincompatible dialysate, deteriorating the tissue and limiting the long-term effectiveness of PD. Peritoneal fibrosis is triggered by chronic inflammation induced by a variety of stimuli, including peritonitis. Exposure to PD fluid alters peritoneal macrophages phenotype. Inflammasome activation triggers chronic inflammation. First, it was determined whether inflammasome activation causes peritoneal deterioration. In the in vivo experiments, the increased expression of the inflammasome components, caspase-1 activity, and concomitant overproduction of IL-1β and IL-18 were observed in a mouse model of peritoneal fibrosis. ASC-positive and F4/80-positive cells colocalized in the subperitoneal mesothelial cell layer. These macrophages expressed high CD44 levels indicating that the CD44-positive macrophages contribute to developing peritoneal deterioration. Furthermore, intravital imaging of the peritoneal microvasculature demonstrated that the circulating CD44-positive leukocytes may contribute to peritoneal fibrosis. Bone marrow transplantation in ASC-deficient mice suppressed inflammasome activation, thereby attenuating peritoneal fibrosis in a high glucose-based PD solution-injected mouse model. Our results suggest inflammasome activation in CD44-positive macrophages may be involved in developing peritoneal fibrosis. The inflammasome-derived pro-inflammatory cytokines might therefore serve as new biomarkers for developing encapsulating peritoneal sclerosis.
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Affiliation(s)
- Hiroyuki Kadoya
- Department of Nephrology and Hypertension, Kawasaki Medical School, Kurashiki, Japan
| | - Akira Hirano
- Department of Nephrology and Hypertension, Kawasaki Medical School, Kurashiki, Japan
| | - Reina Umeno
- Department of Nephrology and Hypertension, Kawasaki Medical School, Kurashiki, Japan
| | - Eriko Kajimoto
- Department of Nephrology and Hypertension, Kawasaki Medical School, Kurashiki, Japan
| | - Tsukasa Iwakura
- Department of Nephrology and Hypertension, Kawasaki Medical School, Kurashiki, Japan
| | - Megumi Kondo
- Department of Nephrology and Hypertension, Kawasaki Medical School, Kurashiki, Japan
| | - Yoshihisa Wada
- Department of Nephrology and Hypertension, Kawasaki Medical School, Kurashiki, Japan
| | - Kengo Kidokoro
- Department of Nephrology and Hypertension, Kawasaki Medical School, Kurashiki, Japan
| | - Seiji Kishi
- Department of Nephrology and Hypertension, Kawasaki Medical School, Kurashiki, Japan
| | - Hajime Nagasu
- Department of Nephrology and Hypertension, Kawasaki Medical School, Kurashiki, Japan
| | - Tamaki Sasaki
- Department of Nephrology and Hypertension, Kawasaki Medical School, Kurashiki, Japan
| | - Shun'ichiro Taniguchi
- Advanced Cancer Medicine for Gynecologic Cancer, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Masafumi Takahashi
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Shimotsuke, Japan
| | - Naoki Kashihara
- Department of Nephrology and Hypertension, Kawasaki Medical School, Kurashiki, Japan
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Luo T, Jia X, Feng WD, Wang JY, Xie F, Kong LD, Wang XJ, Lian R, Liu X, Chu YJ, Wang Y, Xu AL. Bergapten inhibits NLRP3 inflammasome activation and pyroptosis via promoting mitophagy. Acta Pharmacol Sin 2023; 44:1867-1878. [PMID: 37142684 PMCID: PMC10462717 DOI: 10.1038/s41401-023-01094-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 04/17/2023] [Indexed: 05/06/2023] Open
Abstract
Inhibition of NLRP3 inflammasome activation produces potent therapeutic effects in a wide array of inflammatory diseases. Bergapten (BeG), a furocoumarin phytohormone present in many herbal medicines and fruits, exibits anti-inflammatory activity. In this study we characterized the therapeutic potential of BeG against bacterial infection and inflammation-related disorders, and elucidated the underlying mechanisms. We showed that pre-treatment with BeG (20 μM) effectively inhibited NLRP3 inflammasome activation in both lipopolysaccharides (LPS)-primed J774A.1 cells and bone marrow-derived macrophages (BMDMs), evidenced by attenuated cleaved caspase-1 and mature IL-1β release, as well as reduced ASC speck formation and subsequent gasdermin D (GSDMD)-mediated pyroptosis. Transcriptome analysis revealed that BeG regulated the expression of genes involved in mitochondrial and reactive oxygen species (ROS) metabolism in BMDMs. Moreover, BeG treatment reversed the diminished mitochondrial activity and ROS production after NLRP3 activation, and elevated the expression of LC3-II and enhanced the co-localization of LC3 with mitochondria. Treatment with 3-methyladenine (3-MA, 5 mM) reversed the inhibitory effects of BeG on IL-1β, cleaved caspase-1 and LDH release, GSDMD-N formation as well as ROS production. In mouse model of Escherichia coli-induced sepsis and mouse model of Citrobacter rodentium-induced intestinal inflammation, pre-treatment with BeG (50 mg/kg) significantly ameliorated tissue inflammation and injury. In conclusion, BeG inhibits NLRP3 inflammasome activation and pyroptosis by promoting mitophagy and maintaining mitochondrial homeostasis. These results suggest BeG as a promising drug candidate for the treatment of bacterial infection and inflammation-related disorders.
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Affiliation(s)
- Tong Luo
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Xin Jia
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Wan-di Feng
- Beijing Academy of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Jin-Yong Wang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Fang Xie
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Ling-Dong Kong
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Xue-Jiao Wang
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Rui Lian
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Xia Liu
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Ying-Jie Chu
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Yao Wang
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - An-Long Xu
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, 100029, China.
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137
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Yu H, Chang Q, Sun T, He X, Wen L, An J, Feng J, Zhao Y. Metabolic reprogramming and polarization of microglia in Parkinson's disease: Role of inflammasome and iron. Ageing Res Rev 2023; 90:102032. [PMID: 37572760 DOI: 10.1016/j.arr.2023.102032] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 08/03/2023] [Accepted: 08/09/2023] [Indexed: 08/14/2023]
Abstract
Parkinson's disease (PD) is a slowly progressive neurodegenerative disease characterized by α-synuclein aggregation and dopaminergic neuronal death. Recent evidence suggests that neuroinflammation is an early event in the pathogenesis of PD. Microglia are resident immune cells in the central nervous system that can be activated into either pro-inflammatory M1 or anti-inflammatory M2 phenotypes as found in peripheral macrophages. To exert their immune functions, microglia respond to various stimuli, resulting in the flexible regulation of their metabolic pathways. Inflammasomes activation in microglia induces metabolic shift from oxidative phosphorylation to glycolysis, and leads to the polarization of microglia to pro-inflammatory M1 phenotype, finally causing neuroinflammation and neurodegeneration. In addition, iron accumulation induces microglia take an inflammatory and glycolytic phenotype. M2 phenotype microglia is more sensitive to ferroptosis, inhibition of which can attenuate neuroinflammation. Therefore, this review highlights the interplay between microglial polarization and metabolic reprogramming of microglia. Moreover, it will interpret how inflammasomes and iron regulate microglial metabolism and phenotypic shifts, which provides a promising therapeutic target to modulate neuroinflammation and neurodegeneration in PD and other neurodegenerative diseases.
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Affiliation(s)
- Haiyang Yu
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China; Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Qing Chang
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China; Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China; Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Tong Sun
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Xin He
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Lulu Wen
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Jing An
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Juan Feng
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China.
| | - Yuhong Zhao
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China; Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China; Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China.
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138
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Li B, Xu L, Liu J, Zhou M, Jiang X. Phloretin ameliorates heart function after myocardial infarction via NLRP3/Caspase-1/IL-1β signaling. Biomed Pharmacother 2023; 165:115083. [PMID: 37413902 DOI: 10.1016/j.biopha.2023.115083] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Revised: 06/23/2023] [Accepted: 06/26/2023] [Indexed: 07/08/2023] Open
Abstract
OBJECTIVES/AIMS Inflammation is crucial in structural and electrical remodeling after myocardial infarction (MI), affecting cardiac pump function and conduction pathways. Phloretin possesses an anti-inflammation role by inhibiting the NLRP3/Caspase-1/IL-1β pathway. However, the effects of Phloretin on cardiac contractile and electrical conduction function after MI remained unclear. Therefore, we aimed to investigate the potential role of Phloretin in a rat model of MI. METHODS Rats were assigned into four groups: Sham, Sham+Phloretin, MI and MI+Phloretin, with ad libitum food and water. In the MI and MI+Phloretin groups, the left anterior descending coronary artery was occluded for 4 weeks, while the Sham and Sham+Phloretin groups received sham operation. The Sham+Phloretin group and the MI+Phloretin group received oral administration of Phloretin. In vitro, H9c2 cells were subjected to hypoxic conditions to simulate an MI model, with Phloretin for 24 h. Cardiac electrophysiological properties were assessed following MI, including the effective refractory period (ERP), action potential duration (APD)90 and ventricular fibrillation (VF) incidence. Echocardiography evaluated left ventricular ejection fraction (LVEF), left ventricular fraction shortening (LVFS), left ventricular internal diameter at end-diastole (LVIDd), left ventricular internal diameter at end-systole (LVIDs), left ventricular end-systolic volume (LVESV) and left ventricular end-diastolic volume (LVEDV) to assess cardiac function. Serum type B natriuretic peptide (BNP) level was applied to evaluate the degree of Heart failure (HF). The fibrosis area and severity were assessed by Masson staining and protein expression levels of collagen 3, collagen 1, TGF-β and α-SMA. Western blot analysis estimated the protein expression levels of NLRP3, Pro Caspase-1, Caspase-1, ASC, IL-18, IL-1β, pp38, p38, and Connexin43(Cx43) to elucidate the influence of inflammation on electrical remodeling after MI. RESULTS Our findings demonstrate that Phloretin inhibits the NLRP3/Caspase-1/IL-1β pathway, leading to the upregulation of Cx43 by limiting p38 phosphorylation, which further decreases susceptibility to ventricular arrhythmias (VAs). Additionally, Phloretin attenuated fibrosis by inhibiting inflammation to prevent HF. In vitro experiments also provided strong evidence supporting the inhibitory effects of Phloretin on the NLRP3/Caspase-1/IL-1β pathway. CONCLUSION Our results suggest that Phloretin could suppress the NLRP3/Caspase-1/IL-1β pathway to reverse structural and electrical remodeling after MI to prevent the occurrence of VAs and HF.
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Affiliation(s)
- Bin Li
- Department of Cardiology, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan 430060, China; Cardiovascular Research Institute, Wuhan University, Wuhan 430060, China; Hubei Key Laboratory of Cardiology, Wuhan, China
| | - Liao Xu
- Department of Cardiology, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan 430060, China; Cardiovascular Research Institute, Wuhan University, Wuhan 430060, China; Hubei Key Laboratory of Cardiology, Wuhan, China
| | - Jiangwen Liu
- Department of Cardiology, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan 430060, China; Cardiovascular Research Institute, Wuhan University, Wuhan 430060, China; Hubei Key Laboratory of Cardiology, Wuhan, China
| | - Mingmin Zhou
- Department of Cardiology, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan 430060, China; Cardiovascular Research Institute, Wuhan University, Wuhan 430060, China; Hubei Key Laboratory of Cardiology, Wuhan, China.
| | - Xuejun Jiang
- Department of Cardiology, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan 430060, China; Cardiovascular Research Institute, Wuhan University, Wuhan 430060, China; Hubei Key Laboratory of Cardiology, Wuhan, China.
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139
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Chen X, Yuan S, Mi L, Long Y, He H. Pannexin1: insight into inflammatory conditions and its potential involvement in multiple organ dysfunction syndrome. Front Immunol 2023; 14:1217366. [PMID: 37711629 PMCID: PMC10498923 DOI: 10.3389/fimmu.2023.1217366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 08/10/2023] [Indexed: 09/16/2023] Open
Abstract
Sepsis represents a global health concern, and patients with severe sepsis are at risk of experiencing MODS (multiple organ dysfunction syndrome), which is associated with elevated mortality rates and a poorer prognosis. The development of sepsis involves hyperactive inflammation, immune disorder, and disrupted microcirculation. It is crucial to identify targets within these processes to develop therapeutic interventions. One such potential target is Panx1 (pannexin-1), a widely expressed transmembrane protein that facilitates the passage of molecules smaller than 1 KDa, such as ATP. Accumulating evidence has implicated the involvement of Panx1 in sepsis-associated MODS. It attracts immune cells via the purinergic signaling pathway, mediates immune responses via the Panx1-IL-33 axis, promotes immune cell apoptosis, regulates blood flow by modulating VSMCs' and vascular endothelial cells' tension, and disrupts microcirculation by elevating endothelial permeability and promoting microthrombosis. At the level of organs, Panx1 contributes to inflammatory injury in multiple organs. Panx1 primarily exacerbates injury and hinders recovery, making it a potential target for sepsis-induced MODS. While no drugs have been developed explicitly against Panx1, some compounds that inhibit Panx1 hemichannels have been used extensively in experiments. However, given that Panx1's role may vary during different phases of sepsis, more investigations are required before interventions against Panx1 can be applied in clinical. Overall, Panx1 may be a promising target for sepsis-induced MODS. Nevertheless, further research is needed to understand its complex role in different stages of sepsis fully and to develop suitable pharmaceutical interventions for clinical use.
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Affiliation(s)
| | | | | | - Yun Long
- Department of Critical Care Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Huaiwu He
- Department of Critical Care Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
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140
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Chen Y, Zuo M, Chen Y, Yu P, Chen X, Zhang X, Yuan W, Wu Y, Zhu W, Zhao Y. Nanocompartment-confined polymerization in living systems. Nat Commun 2023; 14:5229. [PMID: 37634028 PMCID: PMC10460442 DOI: 10.1038/s41467-023-40935-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 08/16/2023] [Indexed: 08/28/2023] Open
Abstract
Polymerization in living systems has become an effective strategy to regulate cell functions and behavior. However, the requirement of high concentrations of monomers, the existence of complicated intracorporal interferences, and the demand for extra external stimulations hinder their further biological applications. Herein, a nanocompartment-confined strategy that provides a confined and secluded environment for monomer enrichment and isolation is developed to achieve high polymerization efficiency, reduce the interference from external environment, and realize broad-spectrum polymerizations in living systems. For exogenous photopolymerization, the light-mediated free-radical polymerization of sodium 4-styrenesulfonate induces a 2.7-fold increase in the reaction rate with the protection of a confined environment. For endogenous hydrogen peroxide-responsive polymerization, p‑aminodiphenylamine hydrochloride embedded in a nanocompartment not only performs a 6.4-fold higher reaction rate than that of free monomers, but also activates an effective second near-infrared photoacoustic imaging-guided photothermal immunotherapy at tumor sites. This nanocompartment-confined strategy breaks the shackles of conventional polymerization, providing a universal platform for in vivo synthesis of polymers with diverse structures and functions.
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Affiliation(s)
- Yun Chen
- MOE International Joint Research Laboratory on Synthetic Biology and Medicines, School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510006, P. R. China
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Mengxuan Zuo
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Yu Chen
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, P. R. China
| | - Peiyuan Yu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, P. R. China.
| | - Xiaokai Chen
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Xiaodong Zhang
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Wei Yuan
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Yinglong Wu
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Wei Zhu
- MOE International Joint Research Laboratory on Synthetic Biology and Medicines, School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510006, P. R. China.
| | - Yanli Zhao
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.
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141
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Qian N, Distefano R, Ilieva M, Madsen JH, Rennie S, Uchida S. Systematic Analysis of Long Non-Coding RNAs in Inflammasome Activation in Monocytes/Macrophages. Noncoding RNA 2023; 9:50. [PMID: 37736896 PMCID: PMC10514883 DOI: 10.3390/ncrna9050050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 08/21/2023] [Accepted: 08/23/2023] [Indexed: 09/23/2023] Open
Abstract
The NLRP3 inflammasome plays a pivotal role in regulating inflammation and immune responses. Its activation can lead to an inflammatory response and pyroptotic cell death. This is beneficial in the case of infections, but excessive activation can lead to chronic inflammation and tissue damage. Moreover, while most of the mammalian genome is transcribed as RNAs, only a small fraction codes for proteins. Among non-protein-coding RNAs, long non-coding RNAs (lncRNAs) have been shown to play key roles in regulating gene expression and cellular processes. They interact with DNA, RNAs, and proteins, and their dysregulation can provide insights into disease mechanisms, including NLRP3 inflammasome activation. Here, we systematically analyzed previously published RNA sequencing (RNA-seq) data of NLRP3 inflammasome activation in monocytes/macrophages to uncover inflammasome-regulated lncRNA genes. To uncover the functional importance of inflammasome-regulated lncRNA genes, one inflammasome-regulated lncRNA, ENSG00000273124, was knocked down in an in vitro model of macrophage polarization. The results indicate that silencing of ENSG00000273124 resulted in the up-regulation tumor necrosis factor (TNF), suggesting that this lncRNA might be involved in pro-inflammatory response in macrophages. To make our analyzed data more accessible, we developed the web database InflammasomeDB.
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Affiliation(s)
- Na Qian
- Department of Biology, University of Copenhagen, DK-2200 Copenhagen N, Denmark; (N.Q.); (R.D.); (S.R.)
| | - Rebecca Distefano
- Department of Biology, University of Copenhagen, DK-2200 Copenhagen N, Denmark; (N.Q.); (R.D.); (S.R.)
| | - Mirolyuba Ilieva
- Center for RNA Medicine, Department of Clinical Medicine, Aalborg University, DK-2450 Copenhagen SV, Denmark; (M.I.); (J.H.M.)
| | - Jens Hedelund Madsen
- Center for RNA Medicine, Department of Clinical Medicine, Aalborg University, DK-2450 Copenhagen SV, Denmark; (M.I.); (J.H.M.)
| | - Sarah Rennie
- Department of Biology, University of Copenhagen, DK-2200 Copenhagen N, Denmark; (N.Q.); (R.D.); (S.R.)
| | - Shizuka Uchida
- Center for RNA Medicine, Department of Clinical Medicine, Aalborg University, DK-2450 Copenhagen SV, Denmark; (M.I.); (J.H.M.)
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142
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Lamichhane PP, Samir P. Cellular Stress: Modulator of Regulated Cell Death. BIOLOGY 2023; 12:1172. [PMID: 37759572 PMCID: PMC10525759 DOI: 10.3390/biology12091172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/22/2023] [Accepted: 08/22/2023] [Indexed: 09/29/2023]
Abstract
Cellular stress response activates a complex program of an adaptive response called integrated stress response (ISR) that can allow a cell to survive in the presence of stressors. ISR reprograms gene expression to increase the transcription and translation of stress response genes while repressing the translation of most proteins to reduce the metabolic burden. In some cases, ISR activation can lead to the assembly of a cytoplasmic membraneless compartment called stress granules (SGs). ISR and SGs can inhibit apoptosis, pyroptosis, and necroptosis, suggesting that they guard against uncontrolled regulated cell death (RCD) to promote organismal homeostasis. However, ISR and SGs also allow cancer cells to survive in stressful environments, including hypoxia and during chemotherapy. Therefore, there is a great need to understand the molecular mechanism of the crosstalk between ISR and RCD. This is an active area of research and is expected to be relevant to a range of human diseases. In this review, we provided an overview of the interplay between different cellular stress responses and RCD pathways and their modulation in health and disease.
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Affiliation(s)
| | - Parimal Samir
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA
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143
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Karami Z, Mehrzad J, Akrami M, Hosseinkhani S. Anti-inflammation-based treatment of atherosclerosis using Gliclazide-loaded biomimetic nanoghosts. Sci Rep 2023; 13:13880. [PMID: 37620556 PMCID: PMC10449813 DOI: 10.1038/s41598-023-41136-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 08/22/2023] [Indexed: 08/26/2023] Open
Abstract
In the study, a biomimetic platform for anti-inflammatory-based treatment of atherosclerotic plaque was developed. Gliclazide (GL) as an anti-inflammasome agent was encapsulated in PLGA nanoparticles (NP), which were coated by monocyte membrane using an extrusion procedure. The size and zeta potential of the nanoghost (NG) changed to 292 and - 10 nm from 189.5 to -34.1 in the core NP. In addition, the actual size of 62.5 nm with a coating layer of 5 nm was measured using TEM. The NG was also showed a sustained release profile with the drug loading content of about 4.7%. Beside to attenuated TNFα, decrease in gene expression levels of NLRP3, MyD88, NOS, IL-1β, IL-18 and caspases 1/3/8/9 in LPS-primed monocytes exposed to NG strongly indicated remarkable inflammation control. After systemic toxicity evaluation and pharmacokinetic analysis of NP and NG, intravenous NG treatment of rabbits with experimentally induced atherosclerosis revealed remarkably less plaque lesions, foam cells, lipid-laden macrophages, and pathological issues in tunica media of aorta sections. Higher expression of CD163 than CD68 in aorta of NG-treated rabbits strongly reveals higher M2/M1 macrophage polarization. The bio/hemocompatible, biomimetic and anti-inflammatory NG can be considered as a potential platform for immunotherapy of particularly atherosclerosis in the field of personalized medicine.
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Affiliation(s)
- Zahra Karami
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Jalil Mehrzad
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.
| | - Mohammad Akrami
- Department of Pharmaceutical Biomaterials and Medical Biomaterials Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, and Institute of Biomaterials, University of Tehran and Tehran University of Medical Sciences (IBUTUMS), Tehran, Iran.
| | - Saman Hosseinkhani
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
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144
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Han PP, Han Y, Shen XY, Gao ZK, Bi X. NLRP3 inflammasome activation after ischemic stroke. Behav Brain Res 2023; 452:114578. [PMID: 37437697 DOI: 10.1016/j.bbr.2023.114578] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 06/15/2023] [Accepted: 07/09/2023] [Indexed: 07/14/2023]
Abstract
Cerebral ischemia is a pathological condition resulting from the cessation or reduction of blood supply to the cerebral arteries. Neurological deficits that are clinically relevant can arise as a result of brain damage. The etiology of stroke is multifaceted and intricate, with the inflammatory response being a crucial component that warrants significant attention. Following a cerebrovascular accident, the levels of interleukin-1 beta and interleukin-18 within the central nervous system escalate due to the activation of the nucleotide-binding oligomerization domain-like receptor family pyrin domain-containing 3 inflammasome. The inflammation is aggravated by the subsequent occurrence of pyroptosis. The mechanisms that activate the NLRP3 inflammasome pyroptosis signaling pathway axis are described in this article. In addition, we go over how pyroptosis interacts with other processes for regulated cell death. In addition, specific NLRP3 inflammasome pathway inhibitors are identified, which offer new approaches to preventing ischemic brain injury.
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Affiliation(s)
- Ping-Ping Han
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai, China
| | - Yu Han
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai, China
| | - Xin-Ya Shen
- Graduate School of Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Zhen-Kun Gao
- Graduate School of Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xia Bi
- Department of Rehabilitation Medicine, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital, Shanghai, China.
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145
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Stoess C, Leszczynska A, Kui L, Feldstein AE. Pyroptosis and gasdermins-Emerging insights and therapeutic opportunities in metabolic dysfunction-associated steatohepatitis. Front Cell Dev Biol 2023; 11:1218807. [PMID: 37664463 PMCID: PMC10470644 DOI: 10.3389/fcell.2023.1218807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 07/24/2023] [Indexed: 09/05/2023] Open
Abstract
In recent years, there has been a rapid expansion in our understanding of regulated cell death, leading to the discovery of novel mechanisms that govern diverse cell death pathways. One recently discovered type of cell death is pyroptosis, initially identified in the 1990s as a caspase-1-dependent lytic cell death. However, further investigations have redefined pyroptosis as a regulated cell death that relies on the activation of pore-forming proteins, particularly the gasdermin family. Among the key regulators of pyroptosis is the inflammasome sensor NOD-like receptor 3 (NLRP3), a critical innate immune sensor responsible for regulating the activation of caspase-1 and gasdermin D. A deeper understanding of pyroptosis and its interplay with other forms of regulated cell death is emerging, shedding light on a complex regulatory network controlling pore-forming proteins and cell fate. Cell death processes play a central role in diseases such as metabolic dysfunction-associated steatotic liver disease, metabolic dysfunction-associated steatohepatitis, autoinflammatory disorders, and cancer. Cell death often acts as a starting point in these diseases, making it an appealing target for drug development. Yet, the complete molecular mechanisms are not fully understood, and new discoveries reveal promising novel avenues for therapeutic interventions. In this review, we summarize recent evidence on pathways and proteins controlling pyroptosis and gasdermins. Furthermore, we will address the role of pyroptosis and the gasdermin family in metabolic dysfunction-associated steatotic liver disease and steatohepatitis. Additionally, we highlight new potential therapeutic targets for treating metabolic dysfunction-associated steatohepatitis and other inflammatory-associated diseases.
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Affiliation(s)
- Christian Stoess
- Department of Pediatric Gastroenterology, University of California, San Diego, San Diego, CA, United States
- Department of Surgery, TUM School of Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Aleksandra Leszczynska
- Department of Pediatric Gastroenterology, University of California, San Diego, San Diego, CA, United States
| | - Lin Kui
- Department of Pediatric Gastroenterology, University of California, San Diego, San Diego, CA, United States
| | - Ariel E. Feldstein
- Department of Pediatric Gastroenterology, University of California, San Diego, San Diego, CA, United States
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146
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Martín-Sánchez F, Compan V, Peñín-Franch A, Tapia-Abellán A, Gómez AI, Baños-Gregori MC, Schmidt FI, Pelegrin P. ASC oligomer favors caspase-1CARD domain recruitment after intracellular potassium efflux. J Cell Biol 2023; 222:e202003053. [PMID: 37402211 DOI: 10.1083/jcb.202003053] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 02/21/2023] [Accepted: 04/28/2023] [Indexed: 07/06/2023] Open
Abstract
Signaling through the inflammasome is important for the inflammatory response. Low concentrations of intracellular K+ are associated with the specific oligomerization and activation of the NLRP3 inflammasome, a type of inflammasome involved in sterile inflammation. After NLRP3 oligomerization, ASC protein binds and forms oligomeric filaments that culminate in large protein complexes named ASC specks. ASC specks are also initiated from different inflammasome scaffolds, such as AIM2, NLRC4, or Pyrin. ASC oligomers recruit caspase-1 and then induce its activation through interactions between their respective caspase activation and recruitment domains (CARD). So far, ASC oligomerization and caspase-1 activation are K+-independent processes. Here, we found that when there is low intracellular K+, ASC oligomers change their structure independently of NLRP3 and make the ASCCARD domain more accessible for the recruitment of the pro-caspase-1CARD domain. Therefore, conditions that decrease intracellular K+ not only drive NLRP3 responses but also enhance the recruitment of the pro-caspase-1 CARD domain into the ASC specks.
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Affiliation(s)
- Fátima Martín-Sánchez
- Molecular Inflammation Group, Biomedical Research Institute of Murcia (IMIB) , Murcia, Spain
| | - Vincent Compan
- IGF, Univ. Montpellier, CNRS, INSERM , Montpellier, France
- Laboratory of Excellence in Ion Channel Science and Therapeutics (Labex ICST) , Villeneuve d'Ascq, France
| | - Alejandro Peñín-Franch
- Molecular Inflammation Group, Biomedical Research Institute of Murcia (IMIB) , Murcia, Spain
| | - Ana Tapia-Abellán
- Molecular Inflammation Group, Biomedical Research Institute of Murcia (IMIB) , Murcia, Spain
| | - Ana I Gómez
- Molecular Inflammation Group, Biomedical Research Institute of Murcia (IMIB) , Murcia, Spain
| | - María C Baños-Gregori
- Molecular Inflammation Group, Biomedical Research Institute of Murcia (IMIB) , Murcia, Spain
| | - Florian I Schmidt
- Institute of Innate Immunity, Medical Faculty, University of Bonn , Bonn, Germany
| | - Pablo Pelegrin
- Molecular Inflammation Group, Biomedical Research Institute of Murcia (IMIB) , Murcia, Spain
- Department of Biochemistry and Molecular Biology B and Immunology, Faculty of Medicine, University of Murcia, Murcia, Spain
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147
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Alves-Hanna FS, Crespo-Neto JA, Nogueira GM, Pereira DS, Lima AB, Ribeiro TLP, Santos VGR, Fonseca JRF, Magalhães-Gama F, Sadahiro A, Costa AG. Insights Regarding the Role of Inflammasomes in Leukemia: What Do We Know? J Immunol Res 2023; 2023:5584492. [PMID: 37577033 PMCID: PMC10421713 DOI: 10.1155/2023/5584492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 07/02/2023] [Accepted: 07/10/2023] [Indexed: 08/15/2023] Open
Abstract
Inflammation is a physiological mechanism of the immune response and has an important role in maintaining the hematopoietic cell niche in the bone marrow. During this process, the participation of molecules produced by innate immunity cells in response to a variety of pathogen-associated molecular patterns and damage-associated molecular patterns is observed. However, chronic inflammation is intrinsically associated with leukemogenesis, as it induces DNA damage in hematopoietic stem cells and contributes to the creation of the preleukemic clone. Several factors influence the malignant transformation within the hematopoietic microenvironment, with inflammasomes having a crucial role in this process, in addition to acting in the regulation of hematopoiesis and its homeostasis. Inflammasomes are intracellular multimeric complexes responsible for the maturation and secretion of the proinflammatory cytokines interleukin-1β and interleukin-18 and the cell death process via pyroptosis. Therefore, dysregulation of the activation of these complexes may be a factor in triggering several diseases, including leukemias, and this has been the subject of several studies in the area. In this review, we summarized the current knowledge on the relationship between inflammation and leukemogenesis, in particular, the role of inflammasomes in different types of leukemias, and we describe the potential therapeutic targets directed at inflammasomes in the leukemic context.
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Affiliation(s)
- Fabíola Silva Alves-Hanna
- Programa de Pós-Graduação em Imunologia Básica e Aplicada, Instituto de Ciências Biológicas, Universidade Federal do Amazonas (UFAM), Manaus, AM, Brazil
- Diretoria de Ensino e Pesquisa, Fundação Hospitalar de Hematologia e Hemoterapia do Amazonas (HEMOAM), Manaus, AM, Brazil
| | - Juniel Assis Crespo-Neto
- Diretoria de Ensino e Pesquisa, Fundação Hospitalar de Hematologia e Hemoterapia do Amazonas (HEMOAM), Manaus, AM, Brazil
| | - Glenda Menezes Nogueira
- Diretoria de Ensino e Pesquisa, Fundação Hospitalar de Hematologia e Hemoterapia do Amazonas (HEMOAM), Manaus, AM, Brazil
- Programa de Pós-Graduação em Ciências Aplicadas à Hematologia, Universidade do Estado do Amazonas (UEA), Manaus, AM, Brazil
| | - Daniele Sá Pereira
- Diretoria de Ensino e Pesquisa, Fundação Hospitalar de Hematologia e Hemoterapia do Amazonas (HEMOAM), Manaus, AM, Brazil
- Programa de Pós-Graduação em Ciências Aplicadas à Hematologia, Universidade do Estado do Amazonas (UEA), Manaus, AM, Brazil
| | - Amanda Barros Lima
- Programa de Pós-Graduação em Imunologia Básica e Aplicada, Instituto de Ciências Biológicas, Universidade Federal do Amazonas (UFAM), Manaus, AM, Brazil
- Diretoria de Ensino e Pesquisa, Fundação Hospitalar de Hematologia e Hemoterapia do Amazonas (HEMOAM), Manaus, AM, Brazil
| | - Thaís Lohana Pereira Ribeiro
- Diretoria de Ensino e Pesquisa, Fundação Hospitalar de Hematologia e Hemoterapia do Amazonas (HEMOAM), Manaus, AM, Brazil
- Programa de Pós-Graduação em Ciências Aplicadas à Hematologia, Universidade do Estado do Amazonas (UEA), Manaus, AM, Brazil
| | | | - Joey Ramone Ferreira Fonseca
- Diretoria de Ensino e Pesquisa, Fundação Hospitalar de Hematologia e Hemoterapia do Amazonas (HEMOAM), Manaus, AM, Brazil
| | - Fábio Magalhães-Gama
- Diretoria de Ensino e Pesquisa, Fundação Hospitalar de Hematologia e Hemoterapia do Amazonas (HEMOAM), Manaus, AM, Brazil
- Programa de Pós-Graduação em Ciências da Saúde, Instituto René Rachou, Fundação Oswaldo Cruz (FIOCRUZ-Minas), Belo Horizonte, MG, Brazil
| | - Aya Sadahiro
- Programa de Pós-Graduação em Imunologia Básica e Aplicada, Instituto de Ciências Biológicas, Universidade Federal do Amazonas (UFAM), Manaus, AM, Brazil
| | - Allyson Guimarães Costa
- Programa de Pós-Graduação em Imunologia Básica e Aplicada, Instituto de Ciências Biológicas, Universidade Federal do Amazonas (UFAM), Manaus, AM, Brazil
- Diretoria de Ensino e Pesquisa, Fundação Hospitalar de Hematologia e Hemoterapia do Amazonas (HEMOAM), Manaus, AM, Brazil
- Programa de Pós-Graduação em Ciências Aplicadas à Hematologia, Universidade do Estado do Amazonas (UEA), Manaus, AM, Brazil
- Programa de Pós-Graduação em Ciências da Saúde, Instituto René Rachou, Fundação Oswaldo Cruz (FIOCRUZ-Minas), Belo Horizonte, MG, Brazil
- Escola de Enfermagem de Manaus, Universidade Federal do Amazonas (UFAM), Manaus, AM, Brazil
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148
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Wang HY, Lin X, Huang GG, Zhou R, Lei SY, Ren J, Zhang KR, Feng CL, Wu YW, Tang W. Atranorin inhibits NLRP3 inflammasome activation by targeting ASC and protects NLRP3 inflammasome-driven diseases. Acta Pharmacol Sin 2023; 44:1687-1700. [PMID: 36964308 PMCID: PMC10374890 DOI: 10.1038/s41401-023-01054-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 01/09/2023] [Indexed: 03/26/2023] Open
Abstract
Aberrant NLRP3 activation has been implicated in the pathogenesis of numerous inflammation-associated diseases. However, no small molecular inhibitor that directly targets NLRP3 inflammasome has been approved so far. In this study, we show that Atranorin (C19H18O8), the secondary metabolites of lichen family, effectively prevents NLRP3 inflammasome activation in macrophages and dendritic cells. Mechanistically, Atranorin inhibits NLRP3 activation induced cytokine secretion and cell pyroptosis through binding to ASC protein directly and therefore restraining ASC oligomerization. The pharmacological effect of Atranorin is evaluated in NLRP3 inflammasome-driven disease models. Atranorin lowers serum IL-1β and IL-18 levels in LPS induced mice acute inflammation model. Also, Atranorin protects against MSU crystal induced mice gouty arthritis model and lowers ankle IL-1β level. Moreover, Atranorin ameliorates intestinal inflammation and epithelial barrier dysfunction in DSS induced mice ulcerative colitis and inhibits NLRP3 inflammasome activation in colon. Altogether, our study identifies Atranorin as a novel NLRP3 inhibitor that targets ASC protein and highlights the potential therapeutic effects of Atranorin in NLRP3 inflammasome-driven diseases including acute inflammation, gouty arthritis and ulcerative colitis.
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Affiliation(s)
- Hao-Yu Wang
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Laboratory of Anti-inflammation and Immunopharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Xi Lin
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Guan-Gen Huang
- Laboratory of Anti-inflammation and Immunopharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Rong Zhou
- Laboratory of Anti-inflammation and Immunopharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Shu-Yue Lei
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Laboratory of Anti-inflammation and Immunopharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Jing Ren
- Laboratory of Anti-inflammation and Immunopharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Kai-Rong Zhang
- Laboratory of Anti-inflammation and Immunopharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- School of Pharmaceutical Science, Nanchang University, Nanchang, 330006, China
| | - Chun-Lan Feng
- Laboratory of Anti-inflammation and Immunopharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Yan-Wei Wu
- Laboratory of Anti-inflammation and Immunopharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China.
- School of Medicine, Shanghai University, Shanghai, 200444, China.
| | - Wei Tang
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- Laboratory of Anti-inflammation and Immunopharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China.
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, 210023, China.
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149
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Chen H, Deng J, Gao H, Song Y, Zhang Y, Sun J, Zhai J. Involvement of the SIRT1-NLRP3 pathway in the inflammatory response. Cell Commun Signal 2023; 21:185. [PMID: 37507744 PMCID: PMC10375653 DOI: 10.1186/s12964-023-01177-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 05/25/2023] [Indexed: 07/30/2023] Open
Abstract
The silent information regulator 2 homolog 1-NACHT, LRR and PYD domains-containing protein 3 (SIRT1-NLRP3) pathway has a crucial role in regulation of the inflammatory response, and is closely related to the occurrence and development of several inflammation-related diseases. NLRP3 is activated to produce the NLRP3 inflammasome, which leads to activation of caspase-1 and cleavage of pro-interleukin (IL)-1β and pro-IL-18 to their active forms: IL-1β and IL-18, respectively. They are proinflammatory cytokines which then cause an inflammatory response.SIRT1 can inhibit this inflammatory response through nuclear factor erythroid 2-related factor 2 and nuclear factor-kappa B pathways. This review article focuses mainly on how the SIRT1-NLRP3 pathway influences the inflammatory response and its relationship with melatonin, traumatic brain injury, neuroinflammation, depression, atherosclerosis, and liver damage. Video Abstract.
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Affiliation(s)
- Huiyue Chen
- Department of Clinical Pharmacy, the First Hospital of Jilin University, Changchun, , Jilin, China
- School of Pharmaceutical Science, Jilin University, Changchun, Jilin, China
| | - Jiayu Deng
- Department of Pharmacy, Lequn Branch, the First Hospital of Jilin University, Changchun, Jilin, China
| | - Huan Gao
- Department of Clinical Pharmacy, the First Hospital of Jilin University, Changchun, , Jilin, China
| | - Yanqing Song
- Department of Clinical Pharmacy, the First Hospital of Jilin University, Changchun, , Jilin, China
- School of Pharmaceutical Science, Jilin University, Changchun, Jilin, China
- Department of Pharmacy, Lequn Branch, the First Hospital of Jilin University, Changchun, Jilin, China
| | - Yueming Zhang
- Department of Clinical Pharmacy, the First Hospital of Jilin University, Changchun, , Jilin, China
| | - Jingmeng Sun
- Department of Clinical Pharmacy, the First Hospital of Jilin University, Changchun, , Jilin, China
| | - Jinghui Zhai
- Department of Clinical Pharmacy, the First Hospital of Jilin University, Changchun, , Jilin, China.
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150
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Nagar A, Bharadwaj R, Shaikh MOF, Roy A. What are NLRP3-ASC specks? an experimental progress of 22 years of inflammasome research. Front Immunol 2023; 14:1188864. [PMID: 37564644 PMCID: PMC10411722 DOI: 10.3389/fimmu.2023.1188864] [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: 03/17/2023] [Accepted: 07/12/2023] [Indexed: 08/12/2023] Open
Abstract
Speck assembly is the hallmark of NLRP3 inflammasome activation. The 1µm structure comprising of NLRP3 and ASC is the first observable phenotype of NLRP3 activation. While the common consensus is that the specks are the site of inflammasome activity, no direct experimental evidence exists to support this notion. In these 22 years, since the inflammasome discovery, several research studies have been published which directly or indirectly support or refute the idea of speck being the inflammasome. This review compiles the data from two decades of research to answer a long-standing question: "What are NLRP3-ASC specks?"
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Affiliation(s)
- Abhinit Nagar
- Department of Flow Cytometry, Cytek Biosciences, Fremont, CA, United States
| | - Ravi Bharadwaj
- MassBiologics of the University of Massachusetts Medical School, Boston, MA, United States
| | - Mohammad Omar Faruk Shaikh
- Division of Critical Care Medicine, Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Boston, MA, United States
- Department of Anesthesia, Harvard Medical School, Boston, MA, United States
| | - Abhishek Roy
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, United States
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