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Huang W, Chen X, Yin M, Li J, Luo M, Ai Y, Xie L, Li W, Liu Y, Xie X, Chen Y, Zhang X, He J. Protection effects of mice liver and lung injury induced by coronavirus infection of Qingfei Paidu decoction involve inhibition of the NLRP3 signaling pathway. JOURNAL OF ETHNOPHARMACOLOGY 2024; 321:117512. [PMID: 38040130 DOI: 10.1016/j.jep.2023.117512] [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: 07/30/2023] [Revised: 11/12/2023] [Accepted: 11/24/2023] [Indexed: 12/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Coronavirus Disease 2019 (COVID-19) is a grave and pervasive global infectious malady brought about by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), posing a significant menace to human well-being. Qingfei Paidu decoction (QFPD) represents a pioneering formulation derived from four classical Chinese medicine prescriptions. Substantiated evidence attests to its efficacy in alleviating clinical manifestations, mitigating the incidence of severe and critical conditions, and reducing mortality rates among COVID-19 patients. AIM OF THE STUDY This study aims to investigate the protection effects of QFPD in mice afflicted with a coronavirus infection, with a particular focus on determining whether its mechanism involves the NLRP3 signaling pathway. MATERIALS AND METHODS The coronavirus mice model was established through intranasal infection of Kunming mice with Hepatic Mouse Virus A59 (MHV-A59). In the dose-effect experiment, normal saline, ribavirin (80 mg/kg), or QFPD (5, 10, 20 g/kg) were administered to the mice 2 h following MHV-A59 infection. In the time-effect experiment, normal saline or QFPD (20 g/kg) was administered to mice 2 h post MHV-A59 infection. Following the assessment of mouse body weights, food consumption, and water intake, intragastric administration was conducted once daily at consistent intervals over a span of 5 days. The impact of QFPD on pathological alterations in the livers and lungs of MHV-A59-infected mice was evaluated through H&E staining. The viral loads of MHV-A59 in both the liver and lung were determined using qPCR. The expression levels of genes and proteins related to the NLRP3 pathway in the liver and lung were assessed through qPCR, Western Blot analysis, and immunofluorescence. RESULTS The administration of QFPD was shown to ameliorate the reduced weight gain, decline in food consumption, and diminished water intake, all of which were repercussions of MHV-A59 infection in mice. QFPD treatment exhibited notable efficacy in safeguarding tissue integrity. The extent of hepatic and pulmonary injury, when coupled with QFPD treatment, demonstrated not only a reduction with higher treatment dosages but also a decline with prolonged treatment duration. In the dose-effect experiment, there was a notable, dose-dependent reduction in the viral loads, as well as the expression levels of IL-1β, NLRP3, ASC, Caspase 1, Caspase-1 p20, GSDMD, GSDMD-N, and NF-κB within the liver of the QFPD-treated groups. Additionally, in the time-effects experiments, the viral loads and the expression levels of genes and proteins linked to the NLRP3 pathway were consistently lower in the QFPD-treated groups compared with the model control groups, particularly during the periods when their expressions reached their zenith in the model group. Notably, IL-18 showed only a modest elevation relative to the blank control group following QFPD treatment. CONCLUSIONS To sum up, our current study demonstrated that QFPD treatment has the capacity to alleviate infection-related symptoms, mitigate tissue damage in infected organs, and suppress viral replication in coronavirus-infected mice. The protective attributes of QFPD in coronavirus-infected mice are plausibly associated with its modulation of the NLRP3 signaling pathway. We further infer that QFPD holds substantial promise in the context of coronavirus infection therapy.
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Affiliation(s)
- Wenguan Huang
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Xiuyun Chen
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Mingyu Yin
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Junlin Li
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Minyi Luo
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Ying Ai
- Artemisinin Research Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Lei Xie
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Wanxi Li
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Yatian Liu
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Xinyuan Xie
- Artemisinin Research Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Yuan Chen
- Animal Experiment Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Xinyu Zhang
- Clinical Medical College of Acupuncture Moxibustion and Rehabilitation. Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jinyang He
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China.
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Kodi T, Sankhe R, Gopinathan A, Nandakumar K, Kishore A. New Insights on NLRP3 Inflammasome: Mechanisms of Activation, Inhibition, and Epigenetic Regulation. J Neuroimmune Pharmacol 2024; 19:7. [PMID: 38421496 PMCID: PMC10904444 DOI: 10.1007/s11481-024-10101-5] [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: 03/07/2023] [Accepted: 11/06/2023] [Indexed: 03/02/2024]
Abstract
Inflammasomes are important modulators of inflammation. Dysregulation of inflammasomes can enhance vulnerability to conditions such as neurodegenerative diseases, autoinflammatory diseases, and metabolic disorders. Among various inflammasomes, Nucleotide-binding oligomerization domain leucine-rich repeat and pyrin domain-containing protein 3 (NLRP3) is the best-characterized inflammasome related to inflammatory and neurodegenerative diseases. NLRP3 is an intracellular sensor that recognizes pathogen-associated molecular patterns and damage-associated patterns resulting in the assembly and activation of NLRP3 inflammasome. The NLRP3 inflammasome includes sensor NLRP3, adaptor apoptosis-associated speck-like protein (ASC), and effector cysteine protease procaspase-1 that plays an imperative role in caspase-1 stimulation which further initiates a secondary inflammatory response. Regulation of NLRP3 inflammasome ameliorates NLRP3-mediated diseases. Much effort has been invested in studying the activation, and exploration of specific inhibitors and epigenetic mechanisms controlling NLRP3 inflammasome. This review gives an overview of the established NLRP3 inflammasome assembly, its brief molecular mechanistic activations as well as a current update on specific and non-specific NLRP3 inhibitors that could be used in NLRP3-mediated diseases. We also focused on the recently discovered epigenetic mechanisms mediated by DNA methylation, histone alterations, and microRNAs in regulating the activation and expression of NLRP3 inflammasome, which has resulted in a novel method of gaining insight into the mechanisms that modulate NLRP3 inflammasome activity and introducing potential therapeutic strategies for CNS disorders.
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Affiliation(s)
- Triveni Kodi
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Runali Sankhe
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Adarsh Gopinathan
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Krishnadas Nandakumar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Anoop Kishore
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India.
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Green-Fulgham SM, Ball JB, Kwilasz AJ, Harland ME, Frank MG, Dragavon JM, Grace PM, Watkins LR. Interleukin-1beta and inflammasome expression in spinal cord following chronic constriction injury in male and female rats. Brain Behav Immun 2024; 115:157-168. [PMID: 37838078 PMCID: PMC10841465 DOI: 10.1016/j.bbi.2023.10.004] [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: 05/21/2023] [Revised: 10/02/2023] [Accepted: 10/07/2023] [Indexed: 10/16/2023] Open
Abstract
Females represent a majority of chronic pain patients and show greater inflammatory immune responses in human chronic pain patient populations as well as in animal models of neuropathic pain. Recent discoveries in chronic pain research have revealed sex differences in inflammatory signaling, a key component of sensory pathology in chronic neuropathic pain, inviting more research into the nuances of these sex differences. Here we use the chronic constriction injury (CCI) model to explore similarities and differences in expression and production of Inflammatory cytokine IL-1beta in the lumbar spinal cord, as well as its role in chronic pain. We have discovered that intrathecal IL-1 receptor antagonist reverses established pain in both sexes, and increased gene expression of inflammasome NLRP3 is specific to microglia and astrocytes rather than neurons, while IL-1beta is specific to microglia in both sexes. We report several sex differences in the expression level of the genes coding for IL-1beta, as well as the four inflammasomes responsible for IL-1beta release: NLRP3, AIM2, NLRP1, and NLRC4 in the spinal cord. Total mRNA, but not protein expression of IL-1beta is greater in females than males after CCI. Also, while CCI increases all four inflammasomes in both sexes, there are sex differences in relative levels of inflammasome expression. NLRP3 and AIM2 are more highly expressed in females, whereas NLRP1 expression is greater in males.
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Affiliation(s)
- Suzanne M Green-Fulgham
- Department of Psychology and Neuroscience, and the Center for Neuroscience, University of Colorado, Boulder, CO, United States
| | - Jayson B Ball
- Department of Psychology and Neuroscience, and the Center for Neuroscience, University of Colorado, Boulder, CO, United States
| | - Andrew J Kwilasz
- Department of Psychology and Neuroscience, and the Center for Neuroscience, University of Colorado, Boulder, CO, United States
| | - Michael E Harland
- Department of Psychology and Neuroscience, and the Center for Neuroscience, University of Colorado, Boulder, CO, United States
| | - Matthew G Frank
- Department of Psychology and Neuroscience, and the Center for Neuroscience, University of Colorado, Boulder, CO, United States
| | - Joseph M Dragavon
- Advanced Light Microscopy Core, BioFrontiers Institute, University of Colorado, Boulder, CO, United States
| | - Peter M Grace
- Laboratories of Neuroimmunology, Department of Symptom Research, University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Linda R Watkins
- Department of Psychology and Neuroscience, and the Center for Neuroscience, University of Colorado, Boulder, CO, United States.
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Chen SY, Li YP, You YP, Zhang HR, Shi ZJ, Liang QQ, Yuan T, Xu R, Xu LH, Zha QB, Ou-Yang DY, He XH. Theaflavin mitigates acute gouty peritonitis and septic organ injury in mice by suppressing NLRP3 inflammasome assembly. Acta Pharmacol Sin 2023; 44:2019-2036. [PMID: 37221235 PMCID: PMC10545837 DOI: 10.1038/s41401-023-01105-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 05/03/2023] [Indexed: 05/25/2023] Open
Abstract
Activation of NLR family pyrin domain-containing 3 (NLRP3) inflammasome plays important role in defending against infections, but its aberrant activation is causally linked to many inflammatory diseases, thus being a therapeutic target for these diseases. Theaflavin, one major ingredient of black tea, exhibits potent anti-inflammatory and anti-oxidative activities. In this study, we investigated the therapeutic effects of theaflavin against NLRP3 inflammasome activation in macrophages in vitro and in animal models of related diseases. We showed that theaflavin (50, 100, 200 μM) dose-dependently inhibited NLRP3 inflammasome activation in LPS-primed macrophages stimulated with ATP, nigericin or monosodium urate crystals (MSU), evidenced by reduced release of caspase-1p10 and mature interleukin-1β (IL-1β). Theaflavin treatment also inhibited pyroptosis as shown by decreased generation of N-terminal fragment of gasdermin D (GSDMD-NT) and propidium iodide incorporation. Consistent with these, theaflavin treatment suppressed ASC speck formation and oligomerization in macrophages stimulated with ATP or nigericin, suggesting reduced inflammasome assembly. We revealed that theaflavin-induced inhibition on NLRP3 inflammasome assembly and pyroptosis resulted from ameliorated mitochondrial dysfunction and reduced mitochondrial ROS production, thereby suppressing interaction between NLRP3 and NEK7 downstream of ROS. Moreover, we showed that oral administration of theaflavin significantly attenuated MSU-induced mouse peritonitis and improved the survival of mice with bacterial sepsis. Consistently, theaflavin administration significantly reduced serum levels of inflammatory cytokines including IL-1β and attenuated liver inflammation and renal injury of mice with sepsis, concomitant with reduced generation of caspase-1p10 and GSDMD-NT in the liver and kidney. Together, we demonstrate that theaflavin suppresses NLRP3 inflammasome activation and pyroptosis by protecting mitochondrial function, thus mitigating acute gouty peritonitis and bacterial sepsis in mice, highlighting a potential application in treating NLRP3 inflammasome-related diseases.
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Affiliation(s)
- Si-Yuan Chen
- Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Ya-Ping Li
- Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Yi-Ping You
- Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Hong-Rui Zhang
- Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Zi-Jian Shi
- Department of Fetal Medicine, the First Affiliated Hospital of Jinan University, Guangzhou, 510630, China
| | - Qi-Qi Liang
- Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Tao Yuan
- Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Rong Xu
- Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Li-Hui Xu
- Department of Cell Biology, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Qing-Bing Zha
- Department of Fetal Medicine, the First Affiliated Hospital of Jinan University, Guangzhou, 510630, China.
- Department of Clinical Laboratory, the Fifth Affiliated Hospital of Jinan University, Heyuan, 517000, China.
| | - Dong-Yun Ou-Yang
- Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China.
| | - Xian-Hui He
- Department of Immunobiology, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China.
- Department of Clinical Laboratory, the Fifth Affiliated Hospital of Jinan University, Heyuan, 517000, China.
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5
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Liu S, Bi H, Jiang M, Chen Y, Jiang M. An update on the role of TRIM/NLRP3 signaling pathway in atherosclerosis. Biomed Pharmacother 2023; 160:114321. [PMID: 36736278 DOI: 10.1016/j.biopha.2023.114321] [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: 11/11/2022] [Revised: 01/14/2023] [Accepted: 01/26/2023] [Indexed: 02/04/2023] Open
Abstract
Atherosclerosis (AS) is a chronic inflammatory disease of large and medium arteries that includes lipid metabolism disorder and recruitment of immune cells to the artery wall. An increasing number of studies have confirmed that inflammasome over-activation is associated with the onset and progression of atherosclerosis. The NLRP3 inflammasome, in particular, has been proven to increase the incidence rate of cardiovascular diseases (CVD) by promoting pro-inflammatory cytokine release and reducing plaque stability. The strict control of inflammasome and prevention of excessive inflammatory reactions have been the research focus of inflammatory diseases. Tripartite motif (TRIM) is a protein family with a conservative structure and rapid evolution. Several studies have demonstrated the TRIM family's regulatory role in mediating inflammation. This review aims to clarify the relationship between TRIMs and NLRP3 inflammasome and provide insights for future research and treatment discovery.
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Affiliation(s)
- Sibo Liu
- The QUEEN MARY school, Nanchang University, 999 Xuefu Road, Nanchang, Jiangxi 330031, China
| | - Hongfeng Bi
- Medical Equipment Department, Dongying Shengli Oilfield Central Hospital, Dongying, Shandong 257034, China
| | - Meiling Jiang
- Department of obstetrics, Dongying Shengli Oilfield Central Hospital, Dongying, Shandong 257034, China
| | - Yuanli Chen
- Key Laboratory of Major Metabolic Diseases and Nutritional Regulation of Anhui Department of Education, College of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Meixiu Jiang
- The Institute of Translational Medicine, Nanchang University, 999 Xuefu Road, Nanchang, Jiangxi 330031, China.
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Min AK, Fortune T, Rodriguez N, Hedge E, Swartz TH. Inflammasomes as mediators of inflammation in HIV-1 infection. Transl Res 2023; 252:1-8. [PMID: 35917903 PMCID: PMC10160852 DOI: 10.1016/j.trsl.2022.07.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 07/23/2022] [Accepted: 07/27/2022] [Indexed: 01/14/2023]
Abstract
Human immunodeficiency virus type 1 (HIV-1) infection is a chronic disease without a known cure. The advent of effective antiretroviral therapy (ART) has enabled people with HIV (PWH) to have significantly prolonged life expectancies. As a result, morbidity and mortality associated with HIV-1 infection have declined considerably. However, these individuals experience chronic systemic inflammation whose multifaceted etiology is associated with other numerous comorbidities. Inflammasomes are vital mediators that contribute to inflammatory signaling in HIV-1 infection. Here, we provide an overview of the inflammatory pathway that underlies HIV-1 infection, explicitly highlighting the role of the NLRP3 inflammasome. We also delineate the current literature on inflammasomes and the therapeutic targeting strategies aimed at the NLRP3 inflammasome to moderate HIV-1 infection-associated inflammation. Here we describe the NLRP3 inflammasome as a key pathway in developing novel therapeutic targets to block HIV-1 replication and HIV-1-associated inflammatory signaling. Controlling the inflammatory pathways is critical in alleviating the morbidities and mortality associated with chronic HIV-1 infection in PWH.
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Affiliation(s)
- Alice K Min
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Trinisia Fortune
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Natalia Rodriguez
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Esha Hedge
- University of South Carolina, Columbia, South Carolina
| | - Talia H Swartz
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York.
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Cheng H, Chen L, Huang M, Hou J, Chen Z, Yang X. Hunting down NLRP3 inflammasome: An executioner of radiation-induced injury. Front Immunol 2022; 13:967989. [PMID: 36353625 PMCID: PMC9637992 DOI: 10.3389/fimmu.2022.967989] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 10/05/2022] [Indexed: 11/13/2022] Open
Abstract
Radiotherapy is one of the mainstream treatment modalities for several malignancies. However, radiation-induced injury to surrounding normal tissues limits its efficacy. The NLRP3 inflammasome is an essential mechanism of innate immunity that reacts to challenges from endogenous danger signals and pathological microbes. A growing body of evidence has demonstrated a key role of NLRP3 inflammasome in the pathogenesis of radiation-induced tissue injury. Despite accumulating evidence, the potential value of the NLRP3 inflammasome in the management of radiation-induced tissue injury is not adequately recognized. We conducted a literature review to characterize the relationship between NLRP3 inflammasome and radiation injury. By analyzing recent evidence, we identify NLRP3 inflammasome as one of the executioners of radiation-induced injury, since it responds to the challenges of radiation, induces cell pyroptosis and tissue dysfunction, and initiates non-resolving inflammation and fibrosis. Based on these concepts, we propose early intervention/prevention strategies targeting NLRP3 inflammasome in a radiation context, which may help resolve imperative clinical problems.
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Affiliation(s)
- Han Cheng
- First School of Clinical Medicine, Southern Medical University, Guangzhou, China,Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Lingling Chen
- First School of Clinical Medicine, Southern Medical University, Guangzhou, China,Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Minchun Huang
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Jin Hou
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zhifeng Chen
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China,*Correspondence: Xiaojun Yang, ; Zhifeng Chen,
| | - Xiaojun Yang
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China,*Correspondence: Xiaojun Yang, ; Zhifeng Chen,
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Koca-Ünsal RB, Şehirli AÖ, Sayıner S, Aksoy U. Relationship of NLRP3 inflammasome with periodontal, endodontic and related systemic diseases. Mol Biol Rep 2022; 49:11123-11132. [DOI: 10.1007/s11033-022-07894-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 08/16/2022] [Accepted: 08/19/2022] [Indexed: 11/28/2022]
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Jahan S, Awaja N, Hess B, Hajjar S, Sad S, Lohnes D. The transcription factor Cdx2 regulates inflammasome activity through expression of the NLRP3 suppressor TRIM31 to maintain intestinal homeostasis. J Biol Chem 2022; 298:102386. [PMID: 35985421 PMCID: PMC9508567 DOI: 10.1016/j.jbc.2022.102386] [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: 10/07/2021] [Revised: 07/26/2022] [Accepted: 08/02/2022] [Indexed: 11/03/2022] Open
Abstract
The intestine-specific transcription factor Cdx2 is essential for intestinal homeostasis and has been implicated in the pathogenesis of disorders including inflammatory bowel disease. However, the mechanism by which Cdx2 influences intestinal disease is not clear. Here, we present evidence supporting a novel Cdx2–TRIM31–NLRP3 (NLR family, pyrin domain containing 3) signaling pathway, which may represent a mechanistic means by which Cdx2 impacts intestinal inflammation. We found that conditional loss of Cdx function resulted in an increase in proinflammatory cytokines, including tumor necrosis factor alpha, interleukin (IL)-1β, and IL-6, in the mouse colon. We further show that TRIM31, which encodes a suppressor of NLRP3 (a central component of the NLRP3 inflammasome complex) is a novel Cdx2 target gene and is attenuated in the colon of Cdx conditional mutants. Consistent with this, we found that attenuation of TRIM31 in Cdx mutant intestine occurs concomitant with elevated levels of NLRP3 and an increase in inflammasome products. We demonstrate that specific inhibition of NLRP3 activity significantly reduced IL-1β and IL-6 levels and extended the life span of Cdx conditional mutants, reflecting the therapeutic potential of targeting NLRP3. Tumor necrosis factor-alpha levels were also induced independent of NLRP3, potentially via elevated activity of the proinflammatory NF-κB signaling pathway in Cdx mutants. Finally, in silico analysis of ulcerative colitis patients revealed attenuation of CDX2 and TRIM31 expression coincident with enhanced expression of proinflammatory cytokines. We conclude that the novel Cdx2–TRIM31–NLRP3 signaling pathway promotes proinflammatory cytokine expression, and its inhibition may have therapeutic potential in human intestinal diseases.
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Affiliation(s)
- Sanzida Jahan
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada
| | - Nidaa Awaja
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada
| | - Bradley Hess
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada
| | - Stephanie Hajjar
- Department of Biochemistry, Microbiology, and Immunology, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada
| | - Subash Sad
- Department of Biochemistry, Microbiology, and Immunology, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada
| | - David Lohnes
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada.
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Murakami T, Nakaminami Y, Takahata Y, Hata K, Nishimura R. Activation and Function of NLRP3 Inflammasome in Bone and Joint-Related Diseases. Int J Mol Sci 2022; 23:ijms23105365. [PMID: 35628185 PMCID: PMC9141484 DOI: 10.3390/ijms23105365] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 05/09/2022] [Accepted: 05/10/2022] [Indexed: 12/12/2022] Open
Abstract
Inflammation is a pivotal response to a variety of stimuli, and inflammatory molecules such as cytokines have central roles in the pathogenesis of various diseases, including bone and joint diseases. Proinflammatory cytokines are mainly produced by immune cells and mediate inflammatory and innate immune responses. Additionally, proinflammatory cytokines accelerate bone resorption and cartilage destruction, resulting in the destruction of bone and joint tissues. Thus, proinflammatory cytokines are involved in regulating the pathogenesis of bone and joint diseases. Interleukin (IL)-1 is a representative inflammatory cytokine that strongly promotes bone and cartilage destruction, and elucidating the regulation of IL-1 will advance our understanding of the onset and progression of bone and joint diseases. IL-1 has two isoforms, IL-1α and IL-1β. Both isoforms signal through the same IL-1 receptor type 1, but the activation mechanisms are completely different. In particular, IL-1β is tightly regulated by protein complexes termed inflammasomes. Recent research using innovative technologies has led to a series of discoveries about inflammasomes. This review highlights the current understanding of the activation and function of the NLRP3 (NOD-like receptor family, pyrin domain-containing 3) inflammasome in bone and joint diseases.
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Nagaraja S, Jain D, Kesavardhana S. Inflammasome regulation in driving COVID-19 severity in humans and immune tolerance in bats. J Leukoc Biol 2021; 111:497-508. [PMID: 34057760 PMCID: PMC8242921 DOI: 10.1002/jlb.4covhr0221-093rr] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Coronaviruses (CoVs) are RNA viruses that cause human respiratory infections. Zoonotic transmission of the SARS‐CoV‐2 virus caused the recent COVID‐19 pandemic, which led to over 2 million deaths worldwide. Elevated inflammatory responses and cytotoxicity in the lungs are associated with COVID‐19 severity in SARS‐CoV‐2‐infected individuals. Bats, which host pathogenic CoVs, operate dampened inflammatory responses and show tolerance to these viruses with mild clinical symptoms. Delineating the mechanisms governing these host‐specific inflammatory responses is essential to understand host–virus interactions determining the outcome of pathogenic CoV infections. Here, we describe the essential role of inflammasome activation in determining COVID‐19 severity in humans and innate immune tolerance in bats that host several pathogenic CoVs. We further discuss mechanisms leading to inflammasome activation in human SARS‐CoV‐2 infection and how bats are molecularly adapted to suppress these inflammasome responses. We also report an analysis of functionally important residues of inflammasome components that provide new clues of bat strategies to suppress inflammasome signaling and innate immune responses. As spillover of bat viruses may cause the emergence of new human disease outbreaks, the inflammasome regulation in bats and humans likely provides specific strategies to combat the pathogenic CoV infections.
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Affiliation(s)
- Sahana Nagaraja
- Department of Biochemistry, Indian Institute of Science, Bengaluru, Karnataka, India
| | - Disha Jain
- Department of Biochemistry, Indian Institute of Science, Bengaluru, Karnataka, India
| | - Sannula Kesavardhana
- Department of Biochemistry, Indian Institute of Science, Bengaluru, Karnataka, India
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Looi CK, Hii LW, Chung FFL, Mai CW, Lim WM, Leong CO. Roles of Inflammasomes in Epstein-Barr Virus-Associated Nasopharyngeal Cancer. Cancers (Basel) 2021; 13:1786. [PMID: 33918087 PMCID: PMC8069343 DOI: 10.3390/cancers13081786] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/08/2021] [Accepted: 03/08/2021] [Indexed: 02/05/2023] Open
Abstract
Epstein-Barr virus (EBV) infection is recognised as one of the causative agents in most nasopharyngeal carcinoma (NPC) cases. Expression of EBV viral antigens can induce host's antiviral immune response by activating the inflammasomes to produce pro-inflammatory cytokines, such as interleukin-1β (IL-1β) and IL-18. These cytokines are known to be detrimental to a wide range of virus-infected cells, in which they can activate an inflammatory cell death program, called pyroptosis. However, aberrant inflammasome activation and production of its downstream cytokines lead to chronic inflammation that may contribute to various diseases, including NPC. In this review, we summarise the roles of inflammasomes during viral infection, how EBV evades inflammasome-mediated immune response, and progress into tumourigenesis. The contrasting roles of inflammasomes in cancer, as well as the current therapeutic approaches used in targeting inflammasomes, are also discussed in this review. While the inflammasomes appear to have dual roles in carcinogenesis, there are still many questions that remain unanswered. In particular, the exact molecular mechanism responsible for the regulation of the inflammasomes during carcinogenesis of EBV-associated NPC has not been explored thoroughly. Furthermore, the current practical application of inflammasome inhibitors is limited to specific tumour types, hence, further studies are warranted to discover the potential of targeting the inflammasomes for the treatment of NPC.
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Affiliation(s)
- Chin King Looi
- School of Postgraduate Studies, International Medical University, Kuala Lumpur 57000, Malaysia; (C.K.L.); (L.-W.H.)
- Center for Cancer and Stem Cell Research, Institute for Research, Development and Innovation (IRDI), International Medical University, Kuala Lumpur 57000, Malaysia; (C.-W.M.); (W.-M.L.)
| | - Ling-Wei Hii
- School of Postgraduate Studies, International Medical University, Kuala Lumpur 57000, Malaysia; (C.K.L.); (L.-W.H.)
- Center for Cancer and Stem Cell Research, Institute for Research, Development and Innovation (IRDI), International Medical University, Kuala Lumpur 57000, Malaysia; (C.-W.M.); (W.-M.L.)
- School of Pharmacy, International Medical University, Kuala Lumpur 57000, Malaysia
| | - Felicia Fei-Lei Chung
- Mechanisms of Carcinogenesis Section (MCA), Epigenetics Group (EGE), International Agency for Research on Cancer World Health Organisation, CEDEX 08 Lyon, France;
| | - Chun-Wai Mai
- Center for Cancer and Stem Cell Research, Institute for Research, Development and Innovation (IRDI), International Medical University, Kuala Lumpur 57000, Malaysia; (C.-W.M.); (W.-M.L.)
- State Key Laboratory of Oncogenes and Related Genes, Renji-Med X Clinical Stem Cell Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Wei-Meng Lim
- Center for Cancer and Stem Cell Research, Institute for Research, Development and Innovation (IRDI), International Medical University, Kuala Lumpur 57000, Malaysia; (C.-W.M.); (W.-M.L.)
- School of Pharmacy, International Medical University, Kuala Lumpur 57000, Malaysia
| | - Chee-Onn Leong
- Center for Cancer and Stem Cell Research, Institute for Research, Development and Innovation (IRDI), International Medical University, Kuala Lumpur 57000, Malaysia; (C.-W.M.); (W.-M.L.)
- School of Pharmacy, International Medical University, Kuala Lumpur 57000, Malaysia
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13
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Thapa P, Upadhyay SP, Suo WZ, Singh V, Gurung P, Lee ES, Sharma R, Sharma M. Chalcone and its analogs: Therapeutic and diagnostic applications in Alzheimer's disease. Bioorg Chem 2021; 108:104681. [PMID: 33571811 PMCID: PMC7928223 DOI: 10.1016/j.bioorg.2021.104681] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 12/15/2020] [Accepted: 01/20/2021] [Indexed: 02/08/2023]
Abstract
Chalcone [(E)-1,3-diphenyl-2-propene-1-one], a small molecule with α, β unsaturated carbonyl group is a precursor or component of many natural flavonoids and isoflavonoids. It is one of the privileged structures in medicinal chemistry. It possesses a wide range of biological activities encouraging many medicinal chemists to study this scaffold for its usefulness to oncology, infectious diseases, virology and neurodegenerative diseases including Alzheimer's disease (AD). Small molecular size, convenient and cost-effective synthesis, and flexibility for modifications to modulate lipophilicity suitable for blood brain barrier (BBB) permeability make chalcones a preferred candidate for their therapeutic and diagnostic potential in AD. This review summarizes and highlights the importance of chalcone and its analogs as single target small therapeutic agents, multi-target directed ligands (MTDLs) as well as molecular imaging agents for AD. The information summarized here will guide many medicinal chemist and researchers involved in drug discovery to consider chalcone as a potential scaffold for the development of anti-AD agents including theranostics.
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Affiliation(s)
- Pritam Thapa
- Drug Discovery Program, Midwest Veterans' Biomedical Research Foundation, KCVA Medical Center, Kansas City, MO 64128, USA.
| | - Sunil P Upadhyay
- Drug Discovery Program, Midwest Veterans' Biomedical Research Foundation, KCVA Medical Center, Kansas City, MO 64128, USA
| | - William Z Suo
- Laboratory for Alzheimer's Disease & Aging Research, Veterans Affairs Medical Center, Kansas City, MO 64128, USA
| | - Vikas Singh
- Division of Neurology, KCVA Medical Center, Kansas City, MO, USA
| | - Prajwal Gurung
- Inflammation Program, University of Iowa, Iowa City, IA 52242, USA
| | - Eung Seok Lee
- College of Pharmacy, Yeungnam University, Gyeongsan 712-749, Republic of Korea
| | - Ram Sharma
- Drug Discovery Program, Midwest Veterans' Biomedical Research Foundation, KCVA Medical Center, Kansas City, MO 64128, USA
| | - Mukut Sharma
- Drug Discovery Program, Midwest Veterans' Biomedical Research Foundation, KCVA Medical Center, Kansas City, MO 64128, USA
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14
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Chandra S, Ehrlich KC, Lacey M, Baribault C, Ehrlich M. Epigenetics and expression of key genes associated with cardiac fibrosis: NLRP3, MMP2, MMP9, CCN2/CTGF and AGT. Epigenomics 2021; 13:219-234. [PMID: 33538177 PMCID: PMC7907962 DOI: 10.2217/epi-2020-0446] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Aims: Excessive inflammatory signaling and pathological remodeling of the extracellular matrix drive cardiac fibrosis and require changes in gene expression. Materials and methods: Using bioinformatics, both tissue-specific expression profiles and epigenomic profiles of some genes critical for cardiac fibrosis were examined, namely, NLRP3, MMP2, MMP9, CCN2/CTGF, AGT (encodes angiotensin II precursors) and hsa-mir-223 (post-transcriptionally regulates NLRP3). Results: In monocytes, neutrophils, fibroblasts, venous cells, liver and brain, enhancers or super-enhancers were found that correlate with high expression of these genes. One enhancer extended into a silent gene neighbor. These enhancers harbored tissue-specific foci of DNA hypomethylation, open chromatin and transcription factor binding. Conclusions: This study identified previously undescribed enhancers containing hypomethylated transcription factor binding subregions that are predicted to regulate expression of these cardiac fibrosis-inducing genes.
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Affiliation(s)
- Sruti Chandra
- Tulane Research Innovation for Arrhythmia Discoveries, Tulane University School of Medicine, New Orleans, LA, 70112, USA
| | - Kenneth C Ehrlich
- Tulane Center for Biomedical Informatics & Genomics, Tulane University Health Sciences Center, New Orleans, LA, 70112, USA
| | - Michelle Lacey
- Department of Mathematics, Tulane University, New Orleans, LA, 70112, USA.,Tulane Cancer Center, Tulane University Health Sciences Center, New Orleans, LA, 70112, USA
| | - Carl Baribault
- Center for Research & Scientific Computing, Tulane University Information Technology, New Orleans, LA, 70112, USA
| | - Melanie Ehrlich
- Tulane Center for Biomedical Informatics & Genomics, Tulane University Health Sciences Center, New Orleans, LA, 70112, USA.,Tulane Cancer Center, Tulane University Health Sciences Center, New Orleans, LA, 70112, USA.,Hayward Genetics Center, Tulane University Health Sciences Center, New Orleans, LA, 70112, USA
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15
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Malireddi RKS, Gurung P, Kesavardhana S, Samir P, Burton A, Mummareddy H, Vogel P, Pelletier S, Burgula S, Kanneganti TD. Innate immune priming in the absence of TAK1 drives RIPK1 kinase activity-independent pyroptosis, apoptosis, necroptosis, and inflammatory disease. J Exp Med 2020; 217:133533. [PMID: 31869420 PMCID: PMC7062518 DOI: 10.1084/jem.20191644] [Citation(s) in RCA: 179] [Impact Index Per Article: 44.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 10/22/2019] [Accepted: 11/18/2019] [Indexed: 11/14/2022] Open
Abstract
In this issue, Malireddi et al. use a model of pathogen-induced priming and inhibition of TAK1 to demonstrate RIPK1 kinase activity–independent inflammasome activation and pyroptosis, apoptosis, and necroptosis that drive myeloid proliferation and sepsis in TAK1-deficient animals. RIPK1 kinase activity has been shown to be essential to driving pyroptosis, apoptosis, and necroptosis. However, here we show a kinase activity–independent role for RIPK1 in these processes using a model of TLR priming in a TAK1-deficient setting to mimic pathogen-induced priming and inhibition. TLR priming of TAK1-deficient macrophages triggered inflammasome activation, including the activation of caspase-8 and gasdermin D, and the recruitment of NLRP3 and ASC into a novel RIPK1 kinase activity–independent cell death complex to drive pyroptosis and apoptosis. Furthermore, we found fully functional RIPK1 kinase activity–independent necroptosis driven by the RIPK3–MLKL pathway in TAK1-deficient macrophages. In vivo, TAK1 inactivation resulted in RIPK3–caspase-8 signaling axis–driven myeloid proliferation and a severe sepsis-like syndrome. Overall, our study highlights a previously unknown mechanism for RIPK1 kinase activity–independent inflammasome activation and pyroptosis, apoptosis, and necroptosis (PANoptosis) that could be targeted for treatment of TAK1-associated myeloid proliferation and sepsis.
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Affiliation(s)
| | - Prajwal Gurung
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN.,Inflammation Program, Infectious Diseases Division, Department of Internal Medicine, University of Iowa, Iowa City, IA
| | | | - Parimal Samir
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN
| | - Amanda Burton
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN
| | | | - Peter Vogel
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN
| | - Stephane Pelletier
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN
| | - Sandeepta Burgula
- Department of Microbiology, Osmania University, Hyderabad, Telangana, India
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16
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Role of interleukin-1 and inflammasomes in oral disease. J Oral Biosci 2020; 62:242-248. [PMID: 32771408 DOI: 10.1016/j.job.2020.07.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 07/23/2020] [Accepted: 07/30/2020] [Indexed: 01/01/2023]
Abstract
BACKGROUND Inflammation promotes immune cell infiltration into tissues and induces production of pro-inflammatory cytokines that mediate innate immune responses. Acute or temporary inflammation results in the required repair of the inflamed tissues. However, chronic inflammation leads to pathogenesis of inflammatory conditions such as periodontal disease. In periodontal tissues, pro-inflammatory cytokines mediate inflammatory responses and accelerate the bone-resorbing activity of osteoclasts, resulting in destruction of alveolar bone. Levels of interleukin-1 (IL-1), a major pro-inflammatory cytokine that strongly promotes osteoclastic activity, are elevated in oral tissues of patients with periodontitis. Therefore, elucidation of the mechanisms underlying IL-1 production will enhance our understanding of the pathogenesis of periodontal disease. HIGHLIGHT IL-1 has two isoforms: IL-1α and IL-1β. Both isoforms bind to the same IL-1 receptor and have identical biological activity. Unlike that of IL-1α, the IL-1β precursor is not bioactive. To induce its bioactivity, the IL-1β precursor is cleaved by caspase-1, whose activation is mediated by multiprotein complexes termed inflammasomes. Thus, IL-1β maturation and activity are strictly regulated by inflammasomes. This review highlights the current understanding of the molecular mechanisms underlying IL-1 production and the related inflammasome activity. CONCLUSION Inhibition of IL-1 production or the inflammasomes via their regulatory mechanisms may facilitate prevention or treatment of periodontal disease and other inflammatory diseases.
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17
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Harrington V, Gurung P. Reconciling protective and pathogenic roles of the NLRP3 inflammasome in leishmaniasis. Immunol Rev 2020; 297:53-66. [PMID: 32564424 DOI: 10.1111/imr.12886] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/12/2020] [Accepted: 05/20/2020] [Indexed: 12/29/2022]
Abstract
Leishmaniasis is a global health problem that affects more than 2 billion people worldwide. Recent advances in research have demonstrated critical roles for cytoplasmic sensors and inflammasomes during Leishmania spp. infection and pathogenesis. Specifically, several studies have focused on the role of nod-like receptor family, pyrin domain-containing protein 3 (NLRP3) inflammasome and inflammasome-associated cytokines IL-1β and IL-18 in leishmaniasis. Despite these studies, our understanding of the priming and activation events that lead to NLRP3 inflammasome activation during Leishmania spp. infection is limited. Furthermore, whether NLRP3 plays a protective or pathogenic role during Leishmania spp. infection is far from resolved, with some studies showing a protective role and others showing a pathogenic role. In this review, we performed a critical review of the literature to provide a current update on priming and activating signals required for NLRP3 inflammasome activation during Leishmania spp. infection. Finally, we provide a thorough review of the literature to reconcile differences in the observed protective vs pathogenic roles of the NLRP3 inflammasome during Leishmania spp. infection.
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Affiliation(s)
| | - Prajwal Gurung
- Inflammation Program, University of Iowa, Iowa City, IA, USA.,Department of Internal Medicine, University of Iowa, Iowa City, IA, USA.,Immunology Graduate Program, University of Iowa, Iowa City, IA, USA.,Interdisciplinary Graduate Program in Human Toxicology, University of Iowa, Iowa City, IA, USA
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18
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Shen C, Zhang Z, Xie T, Ji J, Xu J, Lin L, Yan J, Kang A, Dai Q, Dong Y, Shan J, Wang S, Zhao X. Rhein Suppresses Lung Inflammatory Injury Induced by Human Respiratory Syncytial Virus Through Inhibiting NLRP3 Inflammasome Activation via NF-κB Pathway in Mice. Front Pharmacol 2020; 10:1600. [PMID: 32047436 PMCID: PMC6997271 DOI: 10.3389/fphar.2019.01600] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 12/10/2019] [Indexed: 11/17/2022] Open
Abstract
Rhein is one of active anthraquinone components in traditional Chinese herbal medicine Rheum palmatum L., possessing anti-inflammatory, antioxidant, antitumor, antiviral, and hepatoprotective activities. Human respiratory syncytial virus (RSV), a common virus, is able to result in pneumonia and bronchitis, which usually can be seen in infants. However, so far the effects of Rhein on RSV-induced pneumonia are still unknown. As the NLRP3 inflammasome is activated excessively, it is able to lead to inflammatory response and tissue injury in most viral infection process (including RSV infection) of respiratory tract. Therefore, we designed experiments to reveal whether Rhein can treat RSV-induced pneumonia by inhibiting NLRP3 inflammasome activation. In present research, we established the pneumonia model of BALB/C mice caused by RSV. First of all, the pathology of lung tissue and the weight of mice were evaluated, and the corresponding lung index was calculated. Additionally, the expression of pro-inflammatory mediators in serum and lung tissues, and related proteins (NLRP3, ASC and Caspase-1) of NLRP3 inflammasome and NF-κB pathway were detected by Enzyme-linked immunosorbent assay (ELISA), Real-time PCR (RT-PCR), Immunohistochemistry (IHC), and Western blot (WB), respectively. The determination of lung index and lung tissue pathological evaluation revealed that Rhein was able to alleviate lung infection and injury caused by RSV. The results of ELISA showed that Rhein was able to reduce the release of pro-inflammatory cytokines in the serum and lung tissues of RSV-induced BALB/c mice, including IL-1β, IL-6, TNF-α, IL-18, and IL-33. Additionally, it was revealed that Rhein inhibited the immune inflammatory response of RSV-infected mice, which was likely to be associated with the inhibition the NLRP3 inflammasome activation via NF-κB pathway. To sum up, our results indicated that Rhein may inhibit RSV-induced pulmonary inflammatory response effectively; meanwhile, it is emphasized that Rhein therapy is likely to be a promising treatment on the RSV-infected lung inflammation and avoidance of lung tissue damage.
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Affiliation(s)
- Cunsi Shen
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Zhengguang Zhang
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Tong Xie
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Jianjian Ji
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Jianya Xu
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Lili Lin
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Jing Yan
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - An Kang
- Jiangsu Engineering Research Center for Efficient Delivery System of TCM, College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Qigang Dai
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Yingmei Dong
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Jinjun Shan
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Shouchuan Wang
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Xia Zhao
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
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19
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Papa R, Picco P, Gattorno M. The expanding pathways of autoinflammation: a lesson from the first 100 genes related to autoinflammatory manifestations. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2019; 120:1-44. [PMID: 32085880 DOI: 10.1016/bs.apcsb.2019.11.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
AutoInflammatory Diseases (AIDs) are a group of innate immune system disorders characterized by sterile inflammation without evidence of pathogenic autoantibodies or auto-reactive T lymphocytes. An expanding spectrum of genes and molecular pathways are associated with AIDs. Inflammasomopathies are secondary to dysregulation of multi-protein complexes, called inflammasomes, leading to an excessive maturation and secretion of IL1β and IL18. Patients present with persistent or recurrent systemic inflammation, abdominal and chest pain, skin rashes and are sensible to IL1 inhibitors. Unfolded proteins response causes a small number of AIDs that we propose to call immuno-proteinopathies, characterized by recurrent fevers and deep tissues inflammation. Other inflammatory conditions can occur in case of abnormalities of actin polymerization and the term of immuno-actinopathies is proposed. Generalized pustular psoriasis is a marker of autoinflammation mainly affecting the keratinocytes. Specific treatment targeting the p40 subunit of IL12 and IL23 or IL-17 are usually effective. Granulomatous inflammation characterizes AIDs related to NOD2 signaling defects. Defects in the ubiquitin-proteasome system cause a group of relopathies and some interferonopathies related to defect of the proteasome function (CANDLE syndrome). Gain of function of proteins regulating the production of type I interferons lead to severe inflammatory conditions, called interferonopathies. The JAK/STAT inhibitors are usually effective in these latter conditions. In conclusions, the identification of the main intracellular pathways involved in rare monogenic AIDs allows not only the proper classification of different conditions, but also highlight a pivotal role of possible novel therapeutic targets for the future.
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Affiliation(s)
- Riccardo Papa
- Autoinflammatory Diseases and Immunodeficiencies Centre, IRCCS Istituto Giannina Gaslini, Genova, GE, Italy
| | - Paolo Picco
- Autoinflammatory Diseases and Immunodeficiencies Centre, IRCCS Istituto Giannina Gaslini, Genova, GE, Italy
| | - Marco Gattorno
- Autoinflammatory Diseases and Immunodeficiencies Centre, IRCCS Istituto Giannina Gaslini, Genova, GE, Italy
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20
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Lipinski S, Pfeuffer S, Arnold P, Treitz C, Aden K, Ebsen H, Falk-Paulsen M, Gisch N, Fazio A, Kuiper J, Luzius A, Billmann-Born S, Schreiber S, Nuñez G, Beer HD, Strowig T, Lamkanfi M, Tholey A, Rosenstiel P. Prdx4 limits caspase-1 activation and restricts inflammasome-mediated signaling by extracellular vesicles. EMBO J 2019; 38:e101266. [PMID: 31544965 PMCID: PMC6792017 DOI: 10.15252/embj.2018101266] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 08/05/2019] [Accepted: 08/21/2019] [Indexed: 12/15/2022] Open
Abstract
Inflammasomes are cytosolic protein complexes, which orchestrate the maturation of active IL‐1β by proteolytic cleavage via caspase‐1. Although many principles of inflammasome activation have been described, mechanisms that limit inflammasome‐dependent immune responses remain poorly defined. Here, we show that the thiol‐specific peroxidase peroxiredoxin‐4 (Prdx4) directly regulates IL‐1β generation by interfering with caspase‐1 activity. We demonstrate that caspase‐1 and Prdx4 form a redox‐sensitive regulatory complex via caspase‐1 cysteine 397 that leads to caspase‐1 sequestration and inactivation. Mice lacking Prdx4 show an increased susceptibility to LPS‐induced septic shock. This effect was phenocopied in mice carrying a conditional deletion of Prdx4 in the myeloid lineage (Prdx4‐ΔLysMCre). Strikingly, we demonstrate that Prdx4 co‐localizes with inflammasome components in extracellular vesicles (EVs) from inflammasome‐activated macrophages. Purified EVs are able to transmit a robust IL‐1β‐dependent inflammatory response in vitro and also in recipient mice in vivo. Loss of Prdx4 boosts the pro‐inflammatory potential of EVs. These findings identify Prdx4 as a critical regulator of inflammasome activity and provide new insights into remote cell‐to‐cell communication function of inflammasomes via macrophage‐derived EVs.
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Affiliation(s)
- Simone Lipinski
- Institute of Clinical Molecular Biology, Christian-Albrechts-University and University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Steffen Pfeuffer
- Institute of Clinical Molecular Biology, Christian-Albrechts-University and University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Philipp Arnold
- Anatomical Institute, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Christian Treitz
- Systematic Proteome Research and Bioanalytics, Institute for Experimental Medicine, Christian-Albrechts-University, Kiel, Germany
| | - Konrad Aden
- Institute of Clinical Molecular Biology, Christian-Albrechts-University and University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany.,1st Department of Internal Medicine, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Henriette Ebsen
- Institute of Clinical Molecular Biology, Christian-Albrechts-University and University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Maren Falk-Paulsen
- Institute of Clinical Molecular Biology, Christian-Albrechts-University and University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Nicolas Gisch
- Division of Bioanalytical Chemistry, Priority Area Infections, Research Center Borstel, Leibniz Lung Center, Borstel, Germany
| | - Antonella Fazio
- Institute of Clinical Molecular Biology, Christian-Albrechts-University and University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Jan Kuiper
- Institute of Clinical Molecular Biology, Christian-Albrechts-University and University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Anne Luzius
- Institute of Clinical Molecular Biology, Christian-Albrechts-University and University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Susanne Billmann-Born
- Institute of Clinical Molecular Biology, Christian-Albrechts-University and University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Stefan Schreiber
- 1st Department of Internal Medicine, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Gabriel Nuñez
- Department of Pathology, School of Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Hans-Dietmar Beer
- Department of Dermatology, University Hospital Zurich, Zurich, Switzerland.,Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Till Strowig
- Department of Microbial Immune Regulation, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Mohamed Lamkanfi
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium.,VIB-UGent Center for Inflammation Research, VIB, Ghent, Belgium
| | - Andreas Tholey
- Systematic Proteome Research and Bioanalytics, Institute for Experimental Medicine, Christian-Albrechts-University, Kiel, Germany
| | - Philip Rosenstiel
- Institute of Clinical Molecular Biology, Christian-Albrechts-University and University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
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21
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Gao J, Cui JZ, Wang A, Chen HHR, Fong A, Matsubara JA. The reduction of XIAP is associated with inflammasome activation in RPE: implications for AMD pathogenesis. J Neuroinflammation 2019; 16:171. [PMID: 31438981 PMCID: PMC6706877 DOI: 10.1186/s12974-019-1558-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Accepted: 08/14/2019] [Indexed: 02/06/2023] Open
Abstract
Background Age-related macular degeneration (AMD) is a multifactorial chronic disease of the eye. Several candidate pathways have been hypothesized to play a role in AMD pathogenesis. Our work and those of others suggests inflammasome activity as a mechanism associated with retinal pigment epithelial (RPE) cell demise. X-linked inhibitor of apoptosis protein (XIAP), an anti-apoptosis factor, has recently been shown to regulate inflammasome activity in non-ocular cells. The purpose of this study is to characterize XIAP’s regulatory role in RPE. Methods Protein lysates of eye tissues from rats (vinpocetine- or aurin tricarboxylic acid complex-treated, ATAC, vs naïve) and mice (wild type vs Caspase-4−/−) were utilized to analyze XIAP protein levels. Immunohistochemistry was used to detect NLRP3 levels in the RPE layer. In vitro inflammasome activation on RPE cells was achieved with L-leucyl-L-leucine methyl ester (Leu-Leu-OMe) stimulation. Levels of XIAP mRNA and 18S RNA were quantified by RT-PCR. Cell culture supernatants were tested directly for secreted IL-1β by ELISA or concentrated for the detection of secreted IL-18 by western blot. Protein lysates from RPE in cell culture were collected for the measurement of cleaved caspase-1 p20, XIAP, and GAPDH. Data are presented as Mean ± SD. p < 0.05 is considered statistically significant. Results The XIAP protein level was significantly increased when the inflammasome was inhibited at the “activation” step by ATAC, but not the “priming” step, in vivo. Concomitantly, NLRP3 immunoreactivity was lower in the RPE layer of animals fed with ATAC. In mice where caspase-1 cleavage was impaired by the genetic deficiency in caspase-4, the XIAP protein level increased in eye tissues. In RPE cell culture, Leu-Leu-OMe stimulation led to caspase-1 cleavage, cytokine secretion, and XIAP reduction, which can be abolished by Z-YVAD-FMK. When XIAP siRNA was given as a pre-treatment to RPE in vitro, Leu-Leu-OMe induced IL-1β/IL-18 secretion was enhanced, whereas overexpressing XIAP reduced IL-1β secretion under inflammasome activation, both compared to controls cells. Conclusions Together, these data suggest XIAP-mediated inhibition of inflammasome activity in RPE may provide insights into the biological consequences of inflammasome activation in RPE and reveals the caspase-1/XIAP/IL-1β/IL-18 axis as a target for broader applications in AMD biology and treatment design. Electronic supplementary material The online version of this article (10.1186/s12974-019-1558-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jiangyuan Gao
- Department of Ophthalmology and Visual Sciences, Faculty of Medicine, Eye Care Centre, University of British Columbia, 2550 Willow Street, Vancouver, BC, V5Z 3N9, Canada
| | - Jing Z Cui
- Department of Ophthalmology and Visual Sciences, Faculty of Medicine, Eye Care Centre, University of British Columbia, 2550 Willow Street, Vancouver, BC, V5Z 3N9, Canada
| | - Aikun Wang
- Department of Ophthalmology and Visual Sciences, Faculty of Medicine, Eye Care Centre, University of British Columbia, 2550 Willow Street, Vancouver, BC, V5Z 3N9, Canada
| | - Hao Hang Rachel Chen
- Department of Ophthalmology and Visual Sciences, Faculty of Medicine, Eye Care Centre, University of British Columbia, 2550 Willow Street, Vancouver, BC, V5Z 3N9, Canada
| | - Alison Fong
- Department of Ophthalmology and Visual Sciences, Faculty of Medicine, Eye Care Centre, University of British Columbia, 2550 Willow Street, Vancouver, BC, V5Z 3N9, Canada
| | - Joanne A Matsubara
- Department of Ophthalmology and Visual Sciences, Faculty of Medicine, Eye Care Centre, University of British Columbia, 2550 Willow Street, Vancouver, BC, V5Z 3N9, Canada.
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22
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Surace AEA, Hedrich CM. The Role of Epigenetics in Autoimmune/Inflammatory Disease. Front Immunol 2019; 10:1525. [PMID: 31333659 PMCID: PMC6620790 DOI: 10.3389/fimmu.2019.01525] [Citation(s) in RCA: 154] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 06/18/2019] [Indexed: 12/21/2022] Open
Abstract
Historically, systemic self-inflammatory conditions were classified as either autoinflammatory and caused by the innate immune system or autoimmune and driven by adaptive immune responses. However, it became clear that reality is much more complex and that autoimmune/inflammatory conditions range along an “inflammatory spectrum” with primarily autoinflammatory vs. autoimmune conditions resembling extremes at either end. Epigenetic modifications influence gene expression and alter cellular functions without modifying the genomic sequence. Methylation of CpG DNA dinucleotides and/or their hydroxymethylation, post-translational modifications to amino termini of histone proteins, and non-coding RNA expression are main epigenetic events. The pathophysiology of autoimmune/inflammatory diseases has been closely linked with disease causing gene mutations (rare) or a combination of genetic susceptibility and epigenetic modifications arising from exposure to the environment (more common). Over recent years, progress has been made in understanding molecular mechanisms involved in systemic inflammation and the contribution of innate and adaptive immune responses. Epigenetic events have been identified as (i) central pathophysiological factors in addition to genetic disease predisposition and (ii) as co-factors determining clinical pictures and outcomes in individuals with monogenic disease. Thus, a complete understanding of epigenetic contributors to autoimmune/inflammatory disease will result in approaches to predict individual disease outcomes and the introduction of effective, target-directed, and tolerable therapies. Here, we summarize recent findings that signify the importance of epigenetic modifications in autoimmune/inflammatory disorders along the inflammatory spectrum choosing three examples: the autoinflammatory bone condition chronic nonbacterial osteomyelitis (CNO), the “mixed pattern” disorder psoriasis, and the autoimmune disease systemic lupus erythematosus (SLE).
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Affiliation(s)
- Anna Elisa Andrea Surace
- Department of Women's and Children's Health, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Christian M Hedrich
- Department of Women's and Children's Health, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom.,Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust Hospital, Liverpool, United Kingdom.,Pädiatrische Rheumatologie, Klinik und Poliklinik für Kinder- und Jugendmedizin, Universitätsklinikum Carl Gustav Carus, TU Dresden, Dresden, Germany
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23
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Vidmar L, Maver A, Drulović J, Sepčić J, Novaković I, Ristič S, Šega S, Peterlin B. Multiple Sclerosis patients carry an increased burden of exceedingly rare genetic variants in the inflammasome regulatory genes. Sci Rep 2019; 9:9171. [PMID: 31235738 PMCID: PMC6591387 DOI: 10.1038/s41598-019-45598-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 06/03/2019] [Indexed: 12/17/2022] Open
Abstract
The role of rare genetic variation and the innate immune system in the etiology of multiple sclerosis (MS) is being increasingly recognized. Recently, we described several rare variants in the NLRP1 gene, presumably conveying an increased risk for familial MS. In the present study we aimed to assess rare genetic variation in the inflammasome regulatory network. We performed whole exome sequencing of 319 probands, comprising patients with familial MS, sporadic MS and control subjects. 62 genes involved in the NLRP1/NLRP3 inflammasome regulation were screened for potentially pathogenic rare genetic variation. Aggregate mutational burden was analyzed, considering the variants' predicted pathogenicity and frequency in the general population. We demonstrate an increased (p = 0.00004) variant burden among MS patients which was most pronounced for the exceedingly rare variants with high predicted pathogenicity. These variants were found in inflammasome genes (NLRP1/3, CASP1), genes mediating inflammasome inactivation via auto and mitophagy (RIPK2, MEFV), and genes involved in response to infection with DNA viruses (POLR3A, DHX58, IFIH1) and to type-1 interferons (TYK2, PTPRC). In conclusion, we present new evidence supporting the importance of rare genetic variation in the inflammasome signaling pathway and its regulation via autophagy and interferon-β to the etiology of MS.
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Affiliation(s)
- Lovro Vidmar
- Clinical Institute of Medical Genetics, Slajmerjeva 3, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Ales Maver
- Clinical Institute of Medical Genetics, Slajmerjeva 3, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Jelena Drulović
- Clinic of Neurology, CCS, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Juraj Sepčić
- Postgraduate Study, School of Medicine, University of Rijeka, Rijeka, Croatia
| | - Ivana Novaković
- Faculty of Medicine, University of Belgrade, Institute of Human Genetics, 26 Visegradska, Belgrade, Serbia
| | - Smiljana Ristič
- Department of Biology and Medical Genetics, School of Medicine, University of Rijeka, Rijeka, Croatia
| | - Saša Šega
- Division of Neurology, University Medical Centre Ljubljana, Zaloška 2, 1000, Ljubljana, Slovenia
| | - Borut Peterlin
- Clinical Institute of Medical Genetics, Slajmerjeva 3, University Medical Centre Ljubljana, Ljubljana, Slovenia.
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24
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TRPV1 and TRPA1 in Lung Inflammation and Airway Hyperresponsiveness Induced by Fine Particulate Matter (PM 2.5). OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:7450151. [PMID: 31281589 PMCID: PMC6589236 DOI: 10.1155/2019/7450151] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 04/02/2019] [Accepted: 04/17/2019] [Indexed: 12/18/2022]
Abstract
Exposure to fine particulate matter (PM2.5) has been associated with lung inflammation and airway hyperresponsiveness (AHR). Transient receptor potential (TRP) vanilloid 1 (TRPV1) and ankyrin 1 (TRPA1) both may play important roles in lung inflammation and AHR. We investigated whether PM2.5-induced lung inflammation and AHR could be prevented by blocking TRPV1 and TRPA1 channels. Mice were injected intraperitoneally with AMG9810 (30 mg/kg, a TRPV1 antagonist) or A967079 (30 mg/kg, a TRPA1 antagonist) or their combination or vehicle (PBS) one hour before intranasal instillation of PM2.5 (7.8 mg/kg) or vehicle (PBS) for two consecutive days, and then the mice were studied 24 h later. All pretreatments inhibited PM2.5-induced AHR and inflammatory infiltration in the lung tissue and decreased inflammatory cytokine levels in the bronchoalveolar lavage fluid, together with oxidant levels in the lung. AMG9810 inhibited MFF expression and increased MFN2 expression while A967079 inhibited DRP1 expression and increased OPA1 expression; combined pretreatment reduced MFF and DPR1 expression and increased MFN2 and OPA1 expression. All pretreatments inhibited the activation of the TLR4/NF-κB pathway, while A967079 alone, and combined with AMG9810 also reduced the activation of the NLRP3/caspase-1 pathway. Both TRPV1 and TRPA1 channels play an important role in PM2.5-induced lung inflammation and AHR. However, inhibition of the TRPA1 channel or combined inhibition of TRPA1 and TRPV1 channels resulted in greater inhibitory effect on PM2.5-induced lung injury through regulating the mitochondrial fission/fusion proteins and inhibiting the TLR4/NF-κB and NLRP3/caspase-1 pathways.
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25
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Lu M, Ma F, Xiao J, Yang L, Li N, Chen D. NLRP3 inflammasome as the potential target mechanism and therapy in recurrent spontaneous abortions. Mol Med Rep 2019; 19:1935-1941. [PMID: 30628671 DOI: 10.3892/mmr.2019.9829] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2017] [Accepted: 04/13/2018] [Indexed: 11/06/2022] Open
Abstract
Recurrent spontaneous abortions (RSA) are defined as aborting three or more times within 20 gestational weeks with the same sexual partner. The occurrence of RSA exhibits an upward trend in modern society. The NACHT, LRR and PYD domains‑containing protein 3 (NLRP3) inflammasome, which is an important component of innate immunity, serves a role in the immune response and in disease occurrence. In the present study, it was demonstrated that the disordered regulation of the NLRP3 inflammasome may induce the occurrence of RSA. The results of the present study demonstrated that caspase‑1 activity, interleukin (IL)‑1β and IL‑18 were upregulated in patients with RSA compared with healthy controls. Further investigation was performed to elucidate the mechanism of activation of the NLRP3 inflammasome in patients with RSA. The inhibition of the NLRP3 inflammasome in a RSA mouse model was able to decrease the rate of abortions. Finally, the present study demonstrated that the activated NLRP3 inflammasome was involved in the pathogenesis of RSA through regulation of the Th17 and regulatory T cell imbalance. The present study provides a potential future therapeutic target for RSA via the NLRP3 inflammasome.
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Affiliation(s)
- Mudan Lu
- Central Laboratory, Wuxi Hospital for Maternal and Child Health Care, The Affiliated Hospital of Nanjing Medical University, Wuxi, Jiangsu 214002, P.R. China
| | - Fengying Ma
- Central Laboratory, Wuxi Hospital for Maternal and Child Health Care, The Affiliated Hospital of Nanjing Medical University, Wuxi, Jiangsu 214002, P.R. China
| | - Jianping Xiao
- Central Laboratory, Wuxi Hospital for Maternal and Child Health Care, The Affiliated Hospital of Nanjing Medical University, Wuxi, Jiangsu 214002, P.R. China
| | - Lan Yang
- Central Laboratory, Wuxi Hospital for Maternal and Child Health Care, The Affiliated Hospital of Nanjing Medical University, Wuxi, Jiangsu 214002, P.R. China
| | - Na Li
- Central Laboratory, Wuxi Hospital for Maternal and Child Health Care, The Affiliated Hospital of Nanjing Medical University, Wuxi, Jiangsu 214002, P.R. China
| | - Daozhen Chen
- Central Laboratory, Wuxi Hospital for Maternal and Child Health Care, The Affiliated Hospital of Nanjing Medical University, Wuxi, Jiangsu 214002, P.R. China
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26
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Xu M, Li F, Wang M, Zhang H, Xu L, Adcock IM, Chung KF, Zhang Y. Protective effects of VGX-1027 in PM2.5-induced airway inflammation and bronchial hyperresponsiveness. Eur J Pharmacol 2019; 842:373-383. [DOI: 10.1016/j.ejphar.2018.11.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 11/07/2018] [Accepted: 11/07/2018] [Indexed: 02/07/2023]
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27
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Yabal M, Calleja DJ, Simpson DS, Lawlor KE. Stressing out the mitochondria: Mechanistic insights into NLRP3 inflammasome activation. J Leukoc Biol 2018; 105:377-399. [PMID: 30589456 DOI: 10.1002/jlb.mr0318-124r] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 10/23/2018] [Accepted: 10/24/2018] [Indexed: 12/13/2022] Open
Abstract
Inflammasomes are multimeric protein complexes that induce the cleavage and release of bioactive IL-1β and cause a lytic form of cell death, termed pyroptosis. Due to its diverse triggers, ranging from infectious pathogens and host danger molecules to environmental irritants, the NOD-like receptor protein 3 (NLRP3) inflammasome remains the most widely studied inflammasome to date. Despite intense scrutiny, a universal mechanism for its activation remains elusive, although, recent research has focused on mitochondrial dysfunction or potassium (K+ ) efflux as key events. In this review, we give a general overview of NLRP3 inflammasome activation and explore the recently emerging noncanonical and alternative pathways to NLRP3 activation. We highlight the role of the NLRP3 inflammasome in the pathogenesis of metabolic disease that is associated with mitochondrial and oxidative stress. Finally, we interrogate the mechanisms proposed to trigger NLRP3 inflammasome assembly and activation. A greater understanding of how NLRP3 inflammasome activation is triggered may reveal new therapeutic targets for the treatment of inflammatory disease.
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Affiliation(s)
- Monica Yabal
- III. Medical Department for Hematology and Oncology, Kinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Dale J Calleja
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
| | - Daniel S Simpson
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia
| | - Kate E Lawlor
- Hudson Institute of Medical Research, Clayton, Victoria, Australia.,Department of Molecular and Translational Science, Monash University, Clayton, Victoria, Australia
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28
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Martinez-Quiles N, Goldbach-Mansky R. Updates on autoinflammatory diseases. Curr Opin Immunol 2018; 55:97-105. [PMID: 30453204 DOI: 10.1016/j.coi.2018.09.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 09/14/2018] [Indexed: 12/14/2022]
Abstract
Autoinflammatory diseases are hyperinflammatory, immune dysregulatory diseases caused by innate immune cells dysregulation that present typically in the perinatal period with systemic and organ-targeted inflammation, but with improved genetic testing and the development of diagnostic criteria, milder and later-onset forms are being detected in adulthood. While the discovery of gain-of-function mutations in innate sensors linked to the production of proinflammatory cytokines provided the bases for anti-cytokine therapies that changed disease and patient outcomes, the field is expanding with the increasing discovery of disease-causing loss-of-function mutations in genes with cellular house-keeping functions that affect cell homeostasis and when dysregulated trigger innate inflammatory pathways. This review focuses on updates on molecular pathways and diseases that cause predominantly IL-1β and Type-I IFN-mediated autoinflammatory diseases.
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Affiliation(s)
- Narcisa Martinez-Quiles
- Department of Immunology, Ophthalmology and ENT, Complutense University School of Medicine and Gregorio Marañón Health Research Institute, Madrid, Spain; Translational Autoinflammatory Diseases Section, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Raphaela Goldbach-Mansky
- Translational Autoinflammatory Diseases Section, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA.
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29
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Poudel B, Gurung P. Allergic asthma: RIPK2 takes the lead. J Leukoc Biol 2018; 104:441-443. [PMID: 30106490 DOI: 10.1002/jlb.3ce0718-293] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 07/31/2018] [Indexed: 12/16/2022] Open
Affiliation(s)
- Barun Poudel
- Inflammation Program, Infectious Diseases Division, Department of Internal Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Prajwal Gurung
- Inflammation Program, Infectious Diseases Division, Department of Internal Medicine, University of Iowa, Iowa City, Iowa, USA.,Immunology Graduate Program, University of Iowa, Iowa City, Iowa, USA.,Human Toxicology Graduate Program, University of Iowa, Iowa City, Iowa, USA.,Center for Immunology and Immune-Based Diseases, University of Iowa, Iowa City, Iowa, USA
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30
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NLRP3: A promising therapeutic target for autoimmune diseases. Autoimmun Rev 2018; 17:694-702. [PMID: 29729449 DOI: 10.1016/j.autrev.2018.01.020] [Citation(s) in RCA: 187] [Impact Index Per Article: 31.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Accepted: 01/26/2018] [Indexed: 12/12/2022]
Abstract
NLRP3, a member of nucleotide-binding domain-(NOD) like receptor family, can be found in large varieties of immune and non-immune cells. Upon activation, the NLRP3, apoptosis-associated speck-like protein (ASC) and pro-caspase-1 would assemble into a multimeric protein, called the NLRP3 inflammasome. Then the inflammasome promotes inflammation (through specific cleavage and production of bioactive IL-1β and IL-18) and pyroptotic cell death. Previous studies have indicated the importance of NLRP3 in regulating innate immunity. Recently, numerous studies have revealed their significance in autoimmune diseases, such as systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), systemic sclerosis (SSc) and inflammatory bowel disease (IBD). In this review, we will briefly discuss the biological features of NLRP3 and summarize the recent progression of the involvement of NLRP3 in the development and pathogenesis of autoimmune diseases, as well as its clinical implications and therapeutic potential.
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