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He C, Liu J, Li J, Wu H, Jiao C, Ze X, Xu S, Zhu Z, Guo W, Xu J, Yao H. Hit-to-Lead Optimization of the Natural Product Oridonin as Novel NLRP3 Inflammasome Inhibitors with Potent Anti-Inflammation Activity. J Med Chem 2024; 67:9406-9430. [PMID: 38751194 DOI: 10.1021/acs.jmedchem.4c00504] [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: 06/14/2024]
Abstract
Targeting NLRP3 inflammasome with inhibitors is a novel strategy for NLRP3-driven diseases. Herein, hit compound 5 possessing an attractive skeleton was identified from our in-house database of oridonin, and then a potential lead compound 32 was obtained by optimization of 5, displaying two-digit nanomolar inhibition on NLRP3. Moreover, compound 32 showed enhanced safety index (SI) relative to oridonin (IC50 = 77.2 vs 780.4 nM, SI = 40.5 vs 8.5) and functioned through blocking ASC oligomerization and interaction of NLRP3-ASC/NEK7, thereby suppressing NLRP3 inflammasome assembly and activation. Furthermore, diverse agonists-induced activations of NLRP3 could be impeded by compound 32 without altering NLRC4 or AIM2 inflammasome. Crucially, compound 32 possessed tolerable pharmaceutical properties and significant anti-inflammatory activity in MSU-induced gouty arthritis model. Therefore, this work enriched the SAR of NLRP3 inflammasome inhibitors and provided a potential candidate for the treatment of NLRP3-associated diseases.
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Affiliation(s)
- Chen He
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu 211198, P. R. China
| | - Junkai Liu
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu 211198, P. R. China
| | - Junda Li
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu 211198, P. R. China
| | - Hongyu Wu
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu 211198, P. R. China
| | - Chenyang Jiao
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210093, P. R. China
| | - Xiaotong Ze
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu 211198, P. R. China
| | - Shengtao Xu
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu 211198, P. R. China
| | - Zheying Zhu
- Division of Molecular Therapeutics & Formulation, School of Pharmacy, The University of Nottingham, Nottingham NG7 2RD, U.K
| | - Wenjie Guo
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210093, P. R. China
| | - Jinyi Xu
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu 211198, P. R. China
| | - Hong Yao
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu 211198, P. R. China
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Manshouri S, Seif F, Kamali M, Bahar MA, Mashayekh A, Molatefi R. The interaction of inflammasomes and gut microbiota: novel therapeutic insights. Cell Commun Signal 2024; 22:209. [PMID: 38566180 PMCID: PMC10986108 DOI: 10.1186/s12964-024-01504-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 01/28/2024] [Indexed: 04/04/2024] Open
Abstract
Inflammasomes are complex platforms for the cleavage and release of inactivated IL-1β and IL-18 cytokines that trigger inflammatory responses against damage-associated molecular patterns (DAMPs) or pathogen-associated molecular patterns (PAMPs). Gut microbiota plays a pivotal role in maintaining gut homeostasis. Inflammasome activation needs to be tightly regulated to limit aberrant activation and bystander damage to the host cells. Several types of inflammasomes, including Node-like receptor protein family (e.g., NLRP1, NLRP3, NLRP6, NLRP12, NLRC4), PYHIN family, and pyrin inflammasomes, interact with gut microbiota to maintain gut homeostasis. This review discusses the current understanding of how inflammasomes and microbiota interact, and how this interaction impacts human health. Additionally, we introduce novel biologics and antagonists, such as inhibitors of IL-1β and inflammasomes, as therapeutic strategies for treating gastrointestinal disorders when inflammasomes are dysregulated or the composition of gut microbiota changes.
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Affiliation(s)
- Shirin Manshouri
- Rajaei Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Valiasr St, Niayesh Intersection, Tehran, 1995614331, Iran
| | - Farhad Seif
- Department of Photodynamic Therapy, Medical Laser Research Center, Academic Center for Education, Culture, and Research (ACECR), Tehran, Iran
- Department of Immunology and Allergy, Academic Center for Education, Culture, and Research (ACECR), Tehran, Iran
| | - Monireh Kamali
- Rajaei Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Valiasr St, Niayesh Intersection, Tehran, 1995614331, Iran
| | - Mohammad Ali Bahar
- Department of Immunology, Medical School, Iran University of Medical Sciences, Tehran, Iran
| | - Arshideh Mashayekh
- Rajaei Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Valiasr St, Niayesh Intersection, Tehran, 1995614331, Iran.
| | - Rasol Molatefi
- Cancer Immunology and Immunotherapy Research Center, Ardabil University of Medical Sciences, Ardabil, Iran.
- Pediatric Department of Bou Ali Hospital, Ardabil University of Medical Sciences, Ardabil, 56189-85991, Iran.
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Sharifa M, Ghosh T, Daher OA, Bhusal P, Alaameri YA, Naz J, Ekhator C, Bellegarde SB, Bisharat P, Vaghani V, Hussain A. Unraveling the Gut-Brain Axis in Multiple Sclerosis: Exploring Dysbiosis, Oxidative Stress, and Therapeutic Insights. Cureus 2023; 15:e47058. [PMID: 38022314 PMCID: PMC10644699 DOI: 10.7759/cureus.47058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/15/2023] [Indexed: 12/01/2023] Open
Abstract
This comprehensive review delves into the intricate relationship between the gut microbiota and multiple sclerosis (MS), shedding light on the potential therapeutic avenues for this complex autoimmune disease. It emphasizes the multifactorial nature of MS, including genetic, environmental, and gender-related factors. Furthermore, the article highlights the emerging role of gut microbiota in MS pathophysiology, particularly in terms of gut dysbiosis, oxidative stress, and inflammasome activation within the gut-brain axis. This interplay raises intriguing questions about how the gut microbiota influences the onset and progression of MS. Environmental factors, such as diet and pollutants, add further layers of complexity to the connection between gut health and MS risk. This review also discusses promising therapeutic interventions, such as fecal microbiota transplantation, probiotics, dietary adjustments, and gut-derived metabolites that offer potential avenues for managing MS. It underscores the need for ongoing research to fully unravel the complexities of the role of the gut-brain axis in MS. Ultimately, this article provides a comprehensive exploration of the topic, offering hope for novel preventive and therapeutic strategies that could significantly improve the lives of individuals affected by this challenging autoimmune condition.
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Affiliation(s)
| | - Tanmay Ghosh
- Medical Education, Dinabandhu Andrews College, West Bengal, IND
| | - Omar A Daher
- Obstetrics and Gynaecology, Beirut Arab University, Tripoli, LBN
| | - Pramod Bhusal
- Internal Medicine, College Of Medical Sciences, Bharatpur, NPL
| | | | - Javeria Naz
- Internal Medicine, Jinnah Sindh Medical University, Karachi, PAK
| | - Chukwuyem Ekhator
- Neuro-Oncology, New York Institute of Technology, College of Osteopathic Medicine, Old Westbury, USA
| | - Sophia B Bellegarde
- Pathology and Laboratory Medicine, American University of Antigua, St. John's, ATG
| | | | - Viralkumar Vaghani
- Biomedical Informatics, The University of Texas Health Science Center, Houston, USA
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Han YH, Liu XD, Jin MH, Sun HN, Kwon T. Role of NLRP3 inflammasome-mediated neuronal pyroptosis and neuroinflammation in neurodegenerative diseases. Inflamm Res 2023; 72:1839-1859. [PMID: 37725102 DOI: 10.1007/s00011-023-01790-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 08/14/2023] [Accepted: 08/17/2023] [Indexed: 09/21/2023] Open
Abstract
BACKGROUND Neurodegenerative diseases are a common group of neurological disorders characterized by progressive loss of neuronal structure and function leading to cognitive impairment. Recent studies have shown that neuronal pyroptosis mediated by the NLRP3 inflammasome plays a crucial role in the pathogenesis of neurodegenerative diseases. OBJECTIVE AND METHOD The NLRP3 inflammasome is a multiprotein complex that, when activated within cells, triggers an inflammatory response, ultimately leading to pyroptotic cell death of neurons. Pyroptosis is a typical pro-inflammatory programmed cell death process occurring downstream of NLRP3 inflammasome activation, characterized by the formation of pores on the cell membrane by the GSDMD protein, leading to cell lysis and the release of inflammatory factors. It has been found that NLRP3 inflammasome-mediated neuronal pyroptosis is closely associated with the development of various neurodegenerative diseases, such as Alzheimer's disease, traumatic brain injury, and Parkinson's disease. Therefore, inhibiting NLRP3 inflammasome activation and attenuating neuronal pyroptosis could potentially serve as novel strategies for the treatment of neurodegenerative diseases. RESULTS The aim of this review is to explore the role of NLRP3 activation-mediated neuronal pyroptosis and neuroinflammation in neurodegenerative diseases. Firstly, we extensively discuss the relationship between NLRP3 inflammasome-mediated neuronal pyroptosis and neuroinflammation in various neurodegenerative diseases. Subsequently, we further explore the mechanisms driving NLRP3 activation and assembly, as well as the post-translational modifications regulating NLRP3 inflammasome activation. CONCLUSION Understanding these mechanisms will contribute to a deeper understanding of the link between neuronal pyroptosis and neurodegenerative diseases, and hold significant implications for the treatment and prevention of neurodegenerative diseases.
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Affiliation(s)
- Ying-Hao Han
- College of Life Science & Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, 163319, China.
| | - Xiao-Dong Liu
- College of Life Science & Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, 163319, China
| | - Mei-Hua Jin
- College of Life Science & Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, 163319, China
| | - Hu-Nan Sun
- College of Life Science & Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, 163319, China.
| | - Taeho Kwon
- Primate Resources Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Jeongeup-si, Jeonbuk, 56216, Republic of Korea.
- Department of Functional Genomics, KRIBB School of Bioscience, University of Science and Technology, Daejeon, 34113, Republic of Korea.
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Buga AM, Padureanu V, Riza AL, Oancea CN, Albu CV, Nica AD. The Gut-Brain Axis as a Therapeutic Target in Multiple Sclerosis. Cells 2023; 12:1872. [PMID: 37508537 PMCID: PMC10378521 DOI: 10.3390/cells12141872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 07/14/2023] [Accepted: 07/15/2023] [Indexed: 07/30/2023] Open
Abstract
The CNS is very susceptible to oxidative stress; the gut microbiota plays an important role as a trigger of oxidative damage that promotes mitochondrial dysfunction, neuroinflammation, and neurodegeneration. In the current review, we discuss recent findings on oxidative-stress-related inflammation mediated by the gut-brain axis in multiple sclerosis (MS). Growing evidence suggests targeting gut microbiota can be a promising strategy for MS management. Intricate interaction between multiple factors leads to increased intra- and inter-individual heterogeneity, frequently painting a different picture in vivo from that obtained under controlled conditions. Following an evidence-based approach, all proposed interventions should be validated in clinical trials with cohorts large enough to reach significance. Our review summarizes existing clinical trials focused on identifying suitable interventions, the suitable combinations, and appropriate timings to target microbiota-related oxidative stress. Most studies assessed relapsing-remitting MS (RRMS); only a few studies with very limited cohorts were carried out in other MS stages (e.g., secondary progressive MS-SPMS). Future trials must consider an extended time frame, perhaps starting with the perinatal period and lasting until the young adult period, aiming to capture as many complex intersystem interactions as possible.
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Affiliation(s)
- Ana Maria Buga
- Department of Biochemistry, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Vlad Padureanu
- Department of Internal Medicine, University of Medicine and Pharmacy of Craiova, 200638 Craiova, Romania
| | - Anca-Lelia Riza
- Laboratory of Human Genomics, University of Medicine and Pharmacy of Craiova, 200638 Craiova, Romania
- Regional Center for Medical Genetics Dolj, Emergency County Hospital Craiova, 200638 Craiova, Romania
| | - Carmen Nicoleta Oancea
- Department of Biochemistry, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Carmen Valeria Albu
- Department of Neurology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Alexandru Dan Nica
- Department of Biochemistry, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
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Jiang P, Chen H, Feng X, Xie H, Jiang M, Xu D, Tang H, Zhang N, Chen J, Zhang L, Tang L. GSDMD-mediated pyroptosis restrains intracellular Chlamydia trachomatis growth in macrophages. Front Cell Infect Microbiol 2023; 13:1116335. [PMID: 37009510 PMCID: PMC10061094 DOI: 10.3389/fcimb.2023.1116335] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 03/03/2023] [Indexed: 03/18/2023] Open
Abstract
Pyroptosis, a type of programmed necrosis associated with inflammatory, is a host defense mechanism against microbial infections. Although Chlamydia has been shown to induce pyroptosis, whether pyroptosis directly impacts the growth of Chlamydia has not been demonstrated. In this study, we found that C. trachomatis L2 infection of the mouse macrophage RAW 264.7 cells induced pyroptosis by monitoring the ultrastructural changes under transmission electron microscopy and the release of LDH and IL-1β. More importantly, this C. trachomatis-triggered pyroptosis with activation of caspase-1 and caspase-11 was also accompanied by gasdermin D (GSDMD) activation. Suppression of these two inflammatory caspases inhibited GSDMD activation. Interestingly, the C. trachomatis-triggered pyroptosis significantly inhibited the intracellular growth of C. trachomatis since inactivation of either GSDMD or caspase-1/11 significantly rescued infectious C. trachomatis yields, which suggests pyroptosis response can be utilized as an intrinsic mechanism to restrict C. trachomatis intracellular infection in addition to the well- documented extrinsic mechanisms by recruiting and enhancing inflammatory responses. This study may reveal novel targets for attenuating C. trachomatis infectivity and/or pathogenicity.
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Affiliation(s)
- Ping Jiang
- Department of Laboratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Hongzhi Chen
- National Clinical Research Center for Metabolic Disease, Key Laboratory of Diabetes Immunology, Ministry of Education, Metabolic Syndrome Research Center, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiaojing Feng
- Department of Laboratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Huiqi Xie
- Department of Laboratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Mengjie Jiang
- Department of Laboratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Danning Xu
- Department of Laboratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Haoneng Tang
- Department of Laboratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Ningjie Zhang
- Department of Blood Transfusion, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jianlin Chen
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Lei Zhang
- Department of Urology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Lingli Tang
- Department of Laboratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
- *Correspondence: Lingli Tang,
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Zhu S, Yue X, Huang K, Li X, Gouife M, Nawaz M, Ma R, Jiang J, Jin S, Xie J. Nigericin treatment activates endoplasmic reticulum apoptosis pathway in goldfish kidney leukocytes. FISH & SHELLFISH IMMUNOLOGY 2023; 134:108616. [PMID: 36796597 DOI: 10.1016/j.fsi.2023.108616] [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: 11/19/2022] [Revised: 02/03/2023] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
Nigericin has been reported to induce apoptosis and pyroptosis in mammalian models. However, the effects and mechanism underlying the immune responses of teleost HKLs induced by nigericin remain enigmatic. To decipher the mechanism after nigericin treatment, the transcriptomic profile of goldfish HKLs was analyzed. The results demonstrated that a total of 465 differently expressed genes (DEGs) with 275 up-regulated and 190 down-regulated genes were identified between the control and nigericin treated groups. Among them, the top 20 DEG KEGG enrichment pathways were observed including apoptosis pathways. In addition, the expression level of selected genes (ADP4, ADP5, IRE1, MARCC, ALR1, DDX58) by quantitative real-time PCR showed a significant change after treatment with nigericin, which was generally identical to the expression patterns of the transcriptomic data. Furthermore, the treatment could induce cell death of HKLs, which was confirmed by LDH release and annexin V-FITC/PI assays. Taken together, our results support the idea that nigericin treatment might activate the IRE1-JNK apoptosis pathway in goldfish HKLs, which will provide insights into the mechanisms underlying HKLs immunity towards apoptosis or pyroptosis regulation in teleosts.
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Affiliation(s)
- Songwei Zhu
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang Province, 315211, China
| | - Xinyuan Yue
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang Province, 315211, China
| | - Kejing Huang
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang Province, 315211, China
| | - Xionglin Li
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang Province, 315211, China
| | - Moussa Gouife
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang Province, 315211, China
| | - Mateen Nawaz
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang Province, 315211, China
| | - Rongrong Ma
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang Province, 315211, China; Key Laboratory of Aquacultural Biotechnology, Ministry of Education, Ningbo University, Ningbo, Zhejiang Province, 315211, China
| | - Jianhu Jiang
- Zhejiang Institute of Freshwater Fisheries, Huzhou, Zhejiang, 313001, China
| | - Shan Jin
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang Province, 315211, China; Key Laboratory of Aquacultural Biotechnology, Ministry of Education, Ningbo University, Ningbo, Zhejiang Province, 315211, China
| | - Jiasong Xie
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang Province, 315211, China; Key Laboratory of Aquacultural Biotechnology, Ministry of Education, Ningbo University, Ningbo, Zhejiang Province, 315211, China.
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Lin C, Jiang Z, Cao L, Zou H, Zhu X. Role of NLRP3 inflammasome in systemic sclerosis. Arthritis Res Ther 2022; 24:196. [PMID: 35974386 PMCID: PMC9380340 DOI: 10.1186/s13075-022-02889-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 07/29/2022] [Indexed: 11/10/2022] Open
Abstract
Systemic sclerosis (SSc) is an autoimmune rheumatic disease with high mortality, which is featured by inflammation, vascular damage, and aggressive fibrosis. To date, the pathogenesis of SSc remains unclear and effective treatments are still under research. Active NLRP3 recruits downstream proteins such as ASC and caspase-1 and assembles into inflammasome, resulting in excretion of inflammatory cytokines including IL-1β and IL-18, as well as in pyroptosis mediated by gasdermin D. Various studies demonstrated that NLRP3 inflammasome might be involved in the mechanism of tenosynovitis, arthritis, fibrosis, and vascular damage. The pathophysiological changes might be due to the activation of proinflammatory Th2 cells, profibrotic M2 macrophages, B cells, fibroblasts, and endothelial cells. Here, we review the studies focused on NLRP3 inflammasome activation, its association with innate and adaptive immune cells, endothelium injury, and differentiation of fibroblasts in SSc. Furthermore, we summarize the prospect of therapy targeting NLRP3 pathway.
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Affiliation(s)
- Cong Lin
- Division of Rheumatology, Huashan Hospital, Fudan University, 12 Wulumuqizhong Road, Shanghai, 200040, China.,Institute of Rheumatology, Immunology and Allergy, Fudan University, Shanghai, China
| | - Zhixing Jiang
- Division of Rheumatology, Huashan Hospital, Fudan University, 12 Wulumuqizhong Road, Shanghai, 200040, China.,Institute of Rheumatology, Immunology and Allergy, Fudan University, Shanghai, China
| | - Ling Cao
- Division of Rheumatology, Huashan Hospital, Fudan University, 12 Wulumuqizhong Road, Shanghai, 200040, China.,Institute of Rheumatology, Immunology and Allergy, Fudan University, Shanghai, China
| | - Hejian Zou
- Division of Rheumatology, Huashan Hospital, Fudan University, 12 Wulumuqizhong Road, Shanghai, 200040, China.,Institute of Rheumatology, Immunology and Allergy, Fudan University, Shanghai, China
| | - Xiaoxia Zhu
- Division of Rheumatology, Huashan Hospital, Fudan University, 12 Wulumuqizhong Road, Shanghai, 200040, China. .,Institute of Rheumatology, Immunology and Allergy, Fudan University, Shanghai, China.
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Ferrari R, Xie B, Assaf E, Morder K, Scott M, Liao H, Calderon MJ, Ross M, Loughran P, Watkins SC, Pipinos I, Casale G, Tzeng E, McEnaney R, Sachdev U. Inflammatory Caspase Activity Mediates HMGB1 Release and Differentiation in Myoblasts Affected by Peripheral Arterial Disease. Cells 2022; 11:1163. [PMID: 35406727 PMCID: PMC8997414 DOI: 10.3390/cells11071163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/08/2022] [Accepted: 03/11/2022] [Indexed: 12/10/2022] Open
Abstract
Introduction: We previously showed that caspase-1 and -11, which are activated by inflammasomes, mediate recovery from muscle ischemia in mice. We hypothesized that similar to murine models, inflammatory caspases modulate myogenicity and inflammation in ischemic muscle disease. Methods: Caspase activity was measured in ischemic and perfused human myoblasts in response to the NLRP3 and AIM2 inflammasome agonists (nigericin and poly(dA:dT), respectively) with and without specific caspase-1 or pan-caspase inhibition. mRNA levels of myogenic markers and caspase-1 were assessed, and protein levels of caspases-1, -4, -5, and -3 were measured by Western blot. Results: When compared to perfused cells, ischemic myoblasts demonstrated attenuated MyoD and myogenin and elevated caspase-1 mRNA. Ischemic myoblasts also had significantly higher enzymatic caspase activity with poly(dA:dT) (p < 0.001), but not nigericin stimulation. Inhibition of caspase activity including caspase-4/-5, but not caspase-1, blocked activation effects of poly(dA:dT). Ischemic myoblasts had elevated cleaved caspase-5. Inhibition of caspase activity deterred differentiation in ischemic but not perfused myoblasts and reduced the release of HMGB1 from both groups. Conclusion: Inflammatory caspases can be activated in ischemic myoblasts by AIM2 and influence ischemic myoblast differentiation and release of pro-angiogenic HMGB1. AIM2 inflammasome involvement suggests a role as a DNA damage sensor, and our data suggest that caspase-5 rather than caspase-1 may mediate the downstream mediator of this pathway.
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Affiliation(s)
- Ricardo Ferrari
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (R.F.); (B.X.); (E.A.); (K.M.); (M.S.); (H.L.); (E.T.); (R.M.)
| | - Bowen Xie
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (R.F.); (B.X.); (E.A.); (K.M.); (M.S.); (H.L.); (E.T.); (R.M.)
| | - Edwyn Assaf
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (R.F.); (B.X.); (E.A.); (K.M.); (M.S.); (H.L.); (E.T.); (R.M.)
| | - Kristin Morder
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (R.F.); (B.X.); (E.A.); (K.M.); (M.S.); (H.L.); (E.T.); (R.M.)
| | - Melanie Scott
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (R.F.); (B.X.); (E.A.); (K.M.); (M.S.); (H.L.); (E.T.); (R.M.)
| | - Hong Liao
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (R.F.); (B.X.); (E.A.); (K.M.); (M.S.); (H.L.); (E.T.); (R.M.)
| | - Michael J. Calderon
- University of Pittsburgh Center for Biologic Imaging, Pittsburgh, PA 15213, USA; (M.J.C.); (M.R.); (P.L.); (S.C.W.)
| | - Mark Ross
- University of Pittsburgh Center for Biologic Imaging, Pittsburgh, PA 15213, USA; (M.J.C.); (M.R.); (P.L.); (S.C.W.)
| | - Patricia Loughran
- University of Pittsburgh Center for Biologic Imaging, Pittsburgh, PA 15213, USA; (M.J.C.); (M.R.); (P.L.); (S.C.W.)
| | - Simon C. Watkins
- University of Pittsburgh Center for Biologic Imaging, Pittsburgh, PA 15213, USA; (M.J.C.); (M.R.); (P.L.); (S.C.W.)
| | - Iraklis Pipinos
- Department of Surgery, University of Nebraska, Omaha, NE 68198, USA; (I.P.); (G.C.)
- Department of Surgery, Veterans Affairs Hospital, Pittsburgh, PA 15240, USA
| | - George Casale
- Department of Surgery, University of Nebraska, Omaha, NE 68198, USA; (I.P.); (G.C.)
| | - Edith Tzeng
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (R.F.); (B.X.); (E.A.); (K.M.); (M.S.); (H.L.); (E.T.); (R.M.)
- Department of Surgery, Veterans Affairs Hospital, Pittsburgh, PA 15240, USA
| | - Ryan McEnaney
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (R.F.); (B.X.); (E.A.); (K.M.); (M.S.); (H.L.); (E.T.); (R.M.)
- Department of Surgery, Veterans Affairs Hospital, Pittsburgh, PA 15240, USA
| | - Ulka Sachdev
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (R.F.); (B.X.); (E.A.); (K.M.); (M.S.); (H.L.); (E.T.); (R.M.)
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10
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van de Veerdonk FL, Renga G, Pariano M, Bellet MM, Servillo G, Fallarino F, De Luca A, Iannitti RG, Piobbico D, Gargaro M, Manni G, D'Onofrio F, Stincardini C, Sforna L, Borghi M, Castelli M, Pieroni S, Oikonomou V, Villella VR, Puccetti M, Giovagnoli S, Galarini R, Barola C, Maiuri L, Maria Agnese DF, Cellini B, Talesa V, Dinarello CA, Costantini C, Romani L. Anakinra restores cellular proteostasis by coupling mitochondrial redox balance to autophagy. J Clin Invest 2021; 132:144983. [PMID: 34847078 PMCID: PMC8759782 DOI: 10.1172/jci144983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 11/24/2021] [Indexed: 12/09/2022] Open
Abstract
Autophagy selectively degrades aggregation-prone misfolded proteins caused by defective cellular proteostasis. However, the complexity of autophagy may prevent the full appreciation of how its modulation could be used as a therapeutic strategy in disease management. Here we define a molecular pathway through which recombinant interleukin-1 receptor antagonist (IL-1Ra, anakinra) affects cellular proteostasis independently from the IL-1 receptor (IL-1R1). Anakinra promoted H2O2-driven autophagy through a xenobiotic sensing pathway involving the aryl hydrocarbon receptor that, activated through the indoleamine 2,3-dioxygenase 1-kynurenine pathway, transcriptionally activates NADPH Oxidase 4 independent of the IL-1R1. By coupling the mitochondrial redox balance to autophagy, anakinra improved the dysregulated proteostasis network in murine and human cystic fibrosis. We anticipate that anakinra may represent a therapeutic option in addition to its IL-1R1 dependent anti-inflammatory properties by acting at the intersection of mitochondrial oxidative stress and autophagy with the capacity to restore conditions in which defective proteostasis leads to human disease.
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Affiliation(s)
| | - Giorgia Renga
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Marilena Pariano
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Marina M Bellet
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Giuseppe Servillo
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | | | - Antonella De Luca
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Rossana G Iannitti
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Danilo Piobbico
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Marco Gargaro
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Giorgia Manni
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Fiorella D'Onofrio
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | | | - Luigi Sforna
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Monica Borghi
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Marilena Castelli
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Stefania Pieroni
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | | | - Valeria R Villella
- European Institute for Research in Cystic Fibrosis, San Raffaele Scientific Institute, Milan, Italy
| | - Matteo Puccetti
- Department of Pharmaceutical Sciences, University of Perugia, Perugia, Italy
| | - Stefano Giovagnoli
- Department of Pharmaceutical Sciences, University of Perugia, Perugia, Italy
| | - Roberta Galarini
- Centro Sviluppo e Validazione Metodi, Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche, Perugia, Italy
| | - Carolina Barola
- Centro Sviluppo e Validazione Metodi, Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche, Perugia, Italy
| | - Luigi Maiuri
- European Institute for Research in Cystic Fibrosis, San Raffaele Scientific Institute, Milan, Italy
| | | | - Barbara Cellini
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Vincenzo Talesa
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Charles A Dinarello
- Department of Medicine, University of Colorado, Denver, United States of America
| | - Claudio Costantini
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Luigina Romani
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy
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11
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Zhang T, Ding S, Wang R. Research Progress of Mitochondrial Mechanism in NLRP3 Inflammasome Activation and Exercise Regulation of NLRP3 Inflammasome. Int J Mol Sci 2021; 22:ijms221910866. [PMID: 34639204 PMCID: PMC8509472 DOI: 10.3390/ijms221910866] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/29/2021] [Accepted: 09/30/2021] [Indexed: 12/13/2022] Open
Abstract
NLRP3 is an important pattern recognition receptor in the innate immune system, and its activation induces a large number of pro-inflammatory cytokines, IL-1β and IL-18 which are involved in the development of various diseases. In recent years, it has been suggested that mitochondria are the platform for NLRP3 inflammasome activation. Additionally, exercise is considered as an important intervention strategy to mediate the innate immune responses. Generally, chronic moderate-intensity endurance training, resistance training and high-intensity interval training inhibit NLRP3 inflammasome activation in response to various pathological factors. In contrast, acute exercise activates NLRP3 inflammasome. However, the mechanisms by which exercise regulates NLRP3 inflammasome activation are largely unclear. Therefore, the mechanism of NLRP3 inflammasome activation is discussed mainly from the perspective of mitochondria in this review. Moreover, the effect and potential mechanism of exercise on NLRP3 inflammasome are explored, hoping to provide new target for relevant research.
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Affiliation(s)
- Tan Zhang
- School of Kinesiology, Shanghai University of Sport, Shanghai 200438, China;
- Shanghai Frontiers Science Research Base of Exercise and Metabolic Health, Shanghai 200438, China
| | - Shuzhe Ding
- Key Laboratory of Adolescent Health Assessment and Exercise Intervention, Ministry of Education, East China Normal University, Shanghai 200241, China
- Correspondence: (S.D.); (R.W.)
| | - Ru Wang
- School of Kinesiology, Shanghai University of Sport, Shanghai 200438, China;
- Shanghai Frontiers Science Research Base of Exercise and Metabolic Health, Shanghai 200438, China
- Correspondence: (S.D.); (R.W.)
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12
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Kaewkla O, Franco CMM. Amycolatopsis pittospori sp. nov., an endophytic actinobacterium isolated from native apricot tree and genome mining revealed the biosynthesis potential as antibiotic producer and plant growth promoter. Antonie Van Leeuwenhoek 2021; 114:365-377. [PMID: 33598876 DOI: 10.1007/s10482-021-01519-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Accepted: 01/17/2021] [Indexed: 11/26/2022]
Abstract
An endophytic actinobacterium, strain PIP199T, was isolated from a root sample of a native apricot growing on the Bedford Park campus of Flinders University, Adelaide, South Australia. The result of a polyphasic study showed that this strain was identified as a new member of the genus Amycolatopsis. Strain PIP199T is an aerobic actinobacterium with well-developed substrate mycelia and aerial mycelia that form short chains of spores. Amycolatopsis keratiniphila subsp. keratiniphila DSM 44409T (99.7%), Amycolatopsis lurida DSM 43134T (99.6%) and Amycolatopsis keratiniphila subsp. nogabecina DSM 44586T (99.4%) shared the highest 16S rRNA gene sequence similarity. A. keratiniphila subsp. keratiniphila DSM 44409T and A. lurida DSM 43134T were the closest phylogenetic neighbors. Chemotaxonomic data including major fatty acids, cell wall components and major menaquinones confirmed the affiliation of strain PIP199T to the genus Amycolatopsis. The phylogenetic analysis, physiological and biochemical studies and genomic study, allowed the genotypic and phenotypic differentiation of strain PIP199T and the closely related species with valid names. ANIb and dDDH values when compared to Amycolatopsis keratiniphila subsp. keratiniphila DSM 44409T were 87.3% and 36.4%, respectively. The name proposed for the new species is Amycolatopsis pittospori sp. nov. The type strain is PIP199T (= NRRL B-65536T = TBRC 10618T).
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Affiliation(s)
- Onuma Kaewkla
- Department of Biology, Faculty of Science, Mahasarakham University, Kantaravichai, Maha Sarakham Province, 44150, Thailand.
- Medical Biotechnology, College of Medicine and Public Health, Flinders University, Bedford Park, SA, 5042, Australia.
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13
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Tupik JD, Coutermarsh-Ott SL, Benton AH, King KA, Kiryluk HD, Caswell CC, Allen IC. ASC-Mediated Inflammation and Pyroptosis Attenuates Brucella abortus Pathogenesis Following the Recognition of gDNA. Pathogens 2020; 9:E1008. [PMID: 33266295 PMCID: PMC7760712 DOI: 10.3390/pathogens9121008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 11/22/2020] [Accepted: 11/25/2020] [Indexed: 12/25/2022] Open
Abstract
Brucella abortus is a zoonotic pathogen that causes brucellosis. Because of Brucella's unique LPS layer and intracellular localization predominately within macrophages, it can often evade immune detection. However, pattern recognition receptors are capable of sensing Brucella pathogen-associated molecular patterns (PAMPS). For example, NOD-like receptors (NLRs) can form a multi-protein inflammasome complex to attenuate Brucella pathogenesis. The inflammasome activates IL-1β and IL-18 to drive immune cell recruitment. Alternatively, inflammasome activation also initiates inflammatory cell death, termed pyroptosis, which augments bacteria clearance. In this report, we assess canonical and non-canonical inflammasome activation following B. abortus infection. We conducted in vivo studies using Asc-/- mice and observed decreased mouse survival, immune cell recruitment, and increased bacteria load. We also conducted studies with Caspase-11-/- mice and did not observe any significant impact on B. abortus pathogenesis. Through mechanistic studies using Asc-/- macrophages, our data suggests that the protective role of ASC may result from the induction of pyroptosis through a gasdermin D-dependent mechanism in macrophages. Additionally, we show that the recognition of Brucella is facilitated by sensing the PAMP gDNA rather than the less immunogenic LPS. Together, these results refine our understanding of the role that inflammasome activation and pyroptosis plays during brucellosis.
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Affiliation(s)
- Juselyn D. Tupik
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24061, USA; (J.D.T.); (S.L.C.-O.); (A.H.B.); (K.A.K.); (H.D.K.); (C.C.C.)
| | - Sheryl L. Coutermarsh-Ott
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24061, USA; (J.D.T.); (S.L.C.-O.); (A.H.B.); (K.A.K.); (H.D.K.); (C.C.C.)
| | - Angela H. Benton
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24061, USA; (J.D.T.); (S.L.C.-O.); (A.H.B.); (K.A.K.); (H.D.K.); (C.C.C.)
| | - Kellie A. King
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24061, USA; (J.D.T.); (S.L.C.-O.); (A.H.B.); (K.A.K.); (H.D.K.); (C.C.C.)
| | - Hanna D. Kiryluk
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24061, USA; (J.D.T.); (S.L.C.-O.); (A.H.B.); (K.A.K.); (H.D.K.); (C.C.C.)
| | - Clayton C. Caswell
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24061, USA; (J.D.T.); (S.L.C.-O.); (A.H.B.); (K.A.K.); (H.D.K.); (C.C.C.)
| | - Irving C. Allen
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24061, USA; (J.D.T.); (S.L.C.-O.); (A.H.B.); (K.A.K.); (H.D.K.); (C.C.C.)
- Department of Basic Science Education, Virginia Tech Carilion School of Medicine, Roanoke, VA 24016, USA
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14
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Zito G, Buscetta M, Cimino M, Dino P, Bucchieri F, Cipollina C. Cellular Models and Assays to Study NLRP3 Inflammasome Biology. Int J Mol Sci 2020; 21:ijms21124294. [PMID: 32560261 PMCID: PMC7352206 DOI: 10.3390/ijms21124294] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 06/06/2020] [Accepted: 06/12/2020] [Indexed: 12/12/2022] Open
Abstract
The NLRP3 inflammasome is a multi-protein complex that initiates innate immunity responses when exposed to a wide range of stimuli, including pathogen-associated molecular patterns (PAMPs) and danger-associated molecular patterns (DAMPs). Inflammasome activation leads to the release of the pro-inflammatory cytokines interleukin (IL)-1β and IL-18 and to pyroptotic cell death. Over-activation of NLRP3 inflammasome has been associated with several chronic inflammatory diseases. A deep knowledge of NLRP3 inflammasome biology is required to better exploit its potential as therapeutic target and for the development of new selective drugs. To this purpose, in the past few years, several tools have been developed for the biological characterization of the multimeric inflammasome complex, the identification of the upstream signaling cascade leading to inflammasome activation, and the downstream effects triggered by NLRP3 activation. In this review, we will report cellular models and cellular, biochemical, and biophysical assays that are currently available for studying inflammasome biology. A special focus will be on those models/assays that have been used to identify NLRP3 inhibitors and their mechanism of action.
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Affiliation(s)
- Giovanni Zito
- Fondazione Ri.MED, via Bandiera 11, 90133 Palermo, Italy; (G.Z.); (M.B.); (M.C.)
| | - Marco Buscetta
- Fondazione Ri.MED, via Bandiera 11, 90133 Palermo, Italy; (G.Z.); (M.B.); (M.C.)
| | - Maura Cimino
- Fondazione Ri.MED, via Bandiera 11, 90133 Palermo, Italy; (G.Z.); (M.B.); (M.C.)
| | - Paola Dino
- Dipartimento di Biomedicina Sperimentale, Neuroscenze e Diagnostica Avanzata (Bi.N.D.), University of Palermo, via del Vespro 129, 90127 Palermo, Italy; (P.D.); (F.B.)
| | - Fabio Bucchieri
- Dipartimento di Biomedicina Sperimentale, Neuroscenze e Diagnostica Avanzata (Bi.N.D.), University of Palermo, via del Vespro 129, 90127 Palermo, Italy; (P.D.); (F.B.)
- Istituto per la Ricerca e l’Innovazione Biomedica-Consiglio Nazionale delle Ricerche, via Ugo la Malfa 153, 90146 Palermo, Italy
| | - Chiara Cipollina
- Fondazione Ri.MED, via Bandiera 11, 90133 Palermo, Italy; (G.Z.); (M.B.); (M.C.)
- Istituto per la Ricerca e l’Innovazione Biomedica-Consiglio Nazionale delle Ricerche, via Ugo la Malfa 153, 90146 Palermo, Italy
- Correspondence: ; Tel.: +39-091-6809191; Fax: +39-091-6809122
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15
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Luo XQ, Duan JX, Yang HH, Zhang CY, Sun CC, Guan XX, Xiong JB, Zu C, Tao JH, Zhou Y, Guan CX. Epoxyeicosatrienoic acids inhibit the activation of NLRP3 inflammasome in murine macrophages. J Cell Physiol 2020; 235:9910-9921. [PMID: 32452554 DOI: 10.1002/jcp.29806] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 05/09/2020] [Indexed: 12/17/2022]
Abstract
Epoxyeicosatrienoic acids (EETs) derived from arachidonic acid exert anti-inflammation effects. We have reported that blocking the degradation of EETs with a soluble epoxide hydrolase (sEH) inhibitor protects mice from lipopolysaccharide (LPS)-induced acute lung injury (ALI). The underlying mechanisms remain essential questions. In this study, we investigated the effects of EETs on the activation of nucleotide-binding domain leucine-rich repeat-containing receptor, pyrin domain-containing-3 (NLRP3) inflammasome in murine macrophages. In an LPS-induced ALI murine model, we found that sEH inhibitor 1-trifluoromethoxyphenyl-3-(1-propionylpiperidin-4-yl), TPPU, profoundly attenuated the pathological injury and inhibited the activation of the NLRP3 inflammasome, characterized by the reduction of the protein expression of NLRP3, ASC, pro-caspase-1, interleukin precursor (pro-IL-1β), and IL-1β p17 in the lungs of LPS-treated mice. In vitro, primary peritoneal macrophages from C57BL/6 were primed with LPS and activated with exogenous adenosine triphosphate (ATP). TPPU treatment remarkably reduced the expression of NLRP3 inflammasome-related molecules and blocked the activation of NLRP3 inflammasome. Importantly, four EETs (5,6-EET, 8,9-EET, 11,12-EET, and 14,15-EET) inhibited the activation of NLRP3 inflammasome induced by LPS + ATP or LPS + nigericin in macrophages in various degree. While the inhibitory effect of 5,6-EET was the weakest. Mechanismly, EETs profoundly decreased the content of reactive oxygen species (ROS) and restored the calcium overload in macrophages receiving LPS + ATP stimulation. In conclusion, this study suggests that EETs inhibit the activation of the NLRP3 inflammasome by suppressing calcium overload and ROS production in macrophages, contributing to the therapeutic potency to ALI.
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Affiliation(s)
- Xiao-Qin Luo
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,Department of Basic Medicine, Hunan Traditional Chinese Medical College, Zhuzhou, Hunan, China.,Department of Medical Technology, Changsha Health Vocational College, Changsha, Hunan, China
| | - Jia-Xi Duan
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Research Unit of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Hui-Hui Yang
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Chen-Yu Zhang
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Chen-Chen Sun
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Xin-Xin Guan
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Jian-Bing Xiong
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Cheng Zu
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Jia-Hao Tao
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Yong Zhou
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Cha-Xiang Guan
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
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16
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Wang T, Zhong H, Zhang W, Wen J, Yi Z, Li P, Gong J. STAT5a induces endotoxin tolerance by alleviating pyroptosis in kupffer cells. Mol Immunol 2020; 122:28-37. [PMID: 32298872 DOI: 10.1016/j.molimm.2020.03.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 03/21/2020] [Accepted: 03/23/2020] [Indexed: 12/15/2022]
Abstract
Pyroptosis, a newly discovered type of programmed cell death, affects endotoxin tolerance in macrophages. However, the factors acting on the nod-like receptor 3 (Nlrp3) inflammasome and caspase1 activation to impede pyroptosis and resulting in tolerance and survival in sepsis were needed to discovered. Here, we found that signal transducer and activator of transcription 5A (STAT5a) restrains pyroptosis in Kupffer cells (KCs) and induces endotoxin tolerance (ET) in a sepsis model. The lentiviral knockdown of STAT5a led to enhanced pyroptosis in KCs, increased IL-1β production and decreased IL-10 production via intricate NF-κb signaling regulation. Thus, our findings reveal a novel mechanism of STAT5a-midiated endotoxin tolerance in KCs.
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Affiliation(s)
- Tao Wang
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China
| | - Hua Zhong
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, 400010, China
| | - Wenfeng Zhang
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China
| | - Jian Wen
- Department of Hepatobiliary Surgery, the Affiliated Hospital of Southwest Medical University, 646000, China
| | - Zhujun Yi
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China
| | - Peizhi Li
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China
| | - Jianping Gong
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China.
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