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Peng Z, Xiao H, Tan Y, Zhang X. Spotlight on macrophage pyroptosis: A bibliometric and visual analysis from 2001 to 2023. Heliyon 2024; 10:e31819. [PMID: 38845992 PMCID: PMC11154638 DOI: 10.1016/j.heliyon.2024.e31819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 05/22/2024] [Accepted: 05/22/2024] [Indexed: 06/09/2024] Open
Abstract
Macrophage pyroptosis plays a significant role in the pathogenesis of various diseases, especially acute lung injury, atherosclerosis, and sepsis. Despite its importance, analysis of the existing literature has been limited. Therefore, we conducted a bibliometric analysis to provide a comprehensive overview of research on macrophage pyroptosis and identify the current research foci and trends in this field. We collected articles related to macrophage pyroptosis published between 2001 and 2022 from the Web of Science Core Collection and PubMed. Citespace, VOSviewer, bibliometrix R package, and Microsoft Excel 2019 were used to analyze co-occurrence relationships and the contribution of countries/regions, institutions, journals, authors, references, and keywords. In total, 1321 papers were included. China and the United States of America published the most articles in this field. TD Kanneganti had the most publications; BT Cookson was the most cited. Although China contributed the most publications, it had a relatively low ratio of multiple-country collaborations (0.132). Among journals, Frontiers in Immunology and Cell Death Disease published the most papers; Nature and the Journal of Immunology were frequently co-cited. Frequently occurring keywords included "inflammation," "NLRP3 inflammasome," "apoptosis," "caspase-1," and "cell death." Moreover, with the advancement of gene editing technology and the integration of clinical applications, novel molecules ("caspases," "GSDMD," "ASC"), programmed cell death topics ("pyroptosis," "ferroptosis," "necrosis"), and clinical applications ("alveolar macrophage," "atherosclerosis," "prognosis") emerged as frontiers. The macrophage pyroptosis field is rapidly evolving and holds promise as a potential target for treating macrophage pyroptosis-related diseases.
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Affiliation(s)
- Zhimei Peng
- Department of Nephrology, The Second Clinical Medical College of Jinan University, Shenzhen People's Hospital, Shenzhen, China
- Shenzhen Key Laboratory of Kidney Diseases, Shenzhen People's Hospital, Shenzhen, China
- The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, Guangdong, China
| | - Hua Xiao
- Department of Nephrology, The Second Clinical Medical College of Jinan University, Shenzhen People's Hospital, Shenzhen, China
| | - Yao Tan
- Department of Ophthalmology, The Third Xiangya Hospital, Central South University, No. 138 Tongzipo Road, Yuelu District, Changsha, 410000, China
| | - Xinzhou Zhang
- Department of Nephrology, The Second Clinical Medical College of Jinan University, Shenzhen People's Hospital, Shenzhen, China
- Shenzhen Key Laboratory of Kidney Diseases, Shenzhen People's Hospital, Shenzhen, China
- The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, Guangdong, China
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Ramoni D, Tirandi A, Montecucco F, Liberale L. Sepsis in elderly patients: the role of neutrophils in pathophysiology and therapy. Intern Emerg Med 2024; 19:901-917. [PMID: 38294676 PMCID: PMC11186952 DOI: 10.1007/s11739-023-03515-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 12/17/2023] [Indexed: 02/01/2024]
Abstract
Sepsis is among the most important causes of mortality, particularly within the elderly population. Sepsis prevalence is on the rise due to different factors, including increasing average population age and the concomitant rise in the prevalence of frailty and chronic morbidities. Recent investigations have unveiled a "trimodal" trajectory for sepsis-related mortality, with the ultimate zenith occurring from 60 to 90 days until several years after the original insult. This prolonged temporal course ostensibly emanates from the sustained perturbation of immune responses, persevering beyond the phase of clinical convalescence. This phenomenon is particularly associated with the aging immune system, characterized by a broad dysregulation commonly known as "inflammaging." Inflammaging associates with a chronic low-grade activation of the innate immune system preventing an appropriate response to infective agents. Notably, during the initial phases of sepsis, neutrophils-essential in combating pathogens-may exhibit compromised activity. Paradoxically, an overly zealous neutrophilic reaction has been observed to underlie multi-organ dysfunction during the later stages of sepsis. Given this scenario, discovering treatments that can enhance neutrophil activity during the early phases of sepsis while curbing their overactivity in the later phases could prove beneficial in fighting pathogens and reducing the detrimental effects caused by an overactive immune system. This narrative review delves into the potential key role of neutrophils in the pathological process of sepsis, focusing on how the aging process impacts their functions, and highlighting possible targets for developing immune-modulatory therapies. Additionally, the review includes tables that outline the principal potential targets for immunomodulating agents.
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Affiliation(s)
- Davide Ramoni
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, 6 Viale Benedetto XV, 16132, Genoa, Italy
| | - Amedeo Tirandi
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, 6 Viale Benedetto XV, 16132, Genoa, Italy
| | - Fabrizio Montecucco
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, 6 Viale Benedetto XV, 16132, Genoa, Italy
- IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, Genoa, Italy
| | - Luca Liberale
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, 6 Viale Benedetto XV, 16132, Genoa, Italy.
- IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, Genoa, Italy.
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Dong T, Huang D, Jin Z. Mechanism of sodium butyrate, a metabolite of gut microbiota, regulating cardiac fibroblast transdifferentiation via the NLRP3/Caspase-1 pyroptosis pathway. J Cardiothorac Surg 2024; 19:208. [PMID: 38616256 PMCID: PMC11017590 DOI: 10.1186/s13019-024-02692-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 03/24/2024] [Indexed: 04/16/2024] Open
Abstract
BACKGROUND Cardiac fibroblasts (CFs) are activated after initial injury, and then differentiate into myofibroblasts (MFs), which play a pivotal role as the primary mediator cells in pathological remodeling. Sodium butyrate (NaB), being a metabolite of gut microbiota, exhibits anti-inflammatory property in local therapies on sites other than the intestine. Thus, this study aimed to probe the mechanism by which NaB regulates CFs transdifferentiation through the NLRP3/Caspase-1 pyroptosis pathway. METHODS CFs were cultured in vitro and induced into MFs by TGFβ1. CFs were identified by immunofluorescence labelling technique of vimentin and α-SMA, followed by treatment with NaB or NLRP3 inflammasome inhibitor (CY-09) and its activator [nigericin sodium salt (NSS)]. The expression levels of α-SMA, GSDMD-N/NLRP3/cleaved Caspase-1 proteins, and inflammatory factors IL-1β/IL-18/IL-6/IL-10 were determined using immunofluorescence, Western blot and ELISA. Cell proliferation and migration were evaluated using the CCK-8 assay and the cell scratch test, respectively. RESULTS Following the induction of TGFβ1, CFs exhibited increased expression levels of α-SMA proteins and IL-6/IL-10, as well as cell proliferative and migratory abilities. TGFβ1 induced CFs to differentiate into MFs, while NaB inhibited this differentiation. NaB inactivated the NLRP3/Caspase-1 pyroptosis pathway. CY-09 demonstrated inhibitory effects on the NLRP3/Caspase-1 pyroptosis pathway, leading to a reduction in TGFβ1-induced CFs transdifferentiation. NSS activated the NLRP3/Caspase-1 pyroptosis pathway, and thus partially counteracting the inhibitory effect of intestinal microbiota metabolite NaB on CFs transdifferentiation. CONCLUSION NaB, a metabolite of the gut microbiota, inhibited the activation of the NLRP3/Caspase-1 pyroptosis pathway in TGFβ1-induced CFs, repressed the transdifferentiation of CFs into MFs.
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Affiliation(s)
- Tiancheng Dong
- Department of Intensive care unit, Wenzhou TCM Hospital of Zhejiang Chinese Medical University, No. 9 Liuhongqiao Jiaowei Road, Wenzhou City, 325000, Zhejiang Province, China
| | - Dingkao Huang
- Department of Intensive care unit, Wenzhou TCM Hospital of Zhejiang Chinese Medical University, No. 9 Liuhongqiao Jiaowei Road, Wenzhou City, 325000, Zhejiang Province, China
| | - Zhengzheng Jin
- Department of Intensive care unit, Wenzhou TCM Hospital of Zhejiang Chinese Medical University, No. 9 Liuhongqiao Jiaowei Road, Wenzhou City, 325000, Zhejiang Province, China.
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Liu J, Zhou J, Luan Y, Li X, Meng X, Liao W, Tang J, Wang Z. cGAS-STING, inflammasomes and pyroptosis: an overview of crosstalk mechanism of activation and regulation. Cell Commun Signal 2024; 22:22. [PMID: 38195584 PMCID: PMC10775518 DOI: 10.1186/s12964-023-01466-w] [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: 08/23/2023] [Accepted: 12/28/2023] [Indexed: 01/11/2024] Open
Abstract
BACKGROUND Intracellular DNA-sensing pathway cGAS-STING, inflammasomes and pyroptosis act as critical natural immune signaling axes for microbial infection, chronic inflammation, cancer progression and organ degeneration, but the mechanism and regulation of the crosstalk network remain unclear. Cellular stress disrupts mitochondrial homeostasis, facilitates the opening of mitochondrial permeability transition pore and the leakage of mitochondrial DNA to cell membrane, triggers inflammatory responses by activating cGAS-STING signaling, and subsequently induces inflammasomes activation and the onset of pyroptosis. Meanwhile, the inflammasome-associated protein caspase-1, Gasdermin D, the CARD domain of ASC and the potassium channel are involved in regulating cGAS-STING pathway. Importantly, this crosstalk network has a cascade amplification effect that exacerbates the immuno-inflammatory response, worsening the pathological process of inflammatory and autoimmune diseases. Given the importance of this crosstalk network of cGAS-STING, inflammasomes and pyroptosis in the regulation of innate immunity, it is emerging as a new avenue to explore the mechanisms of multiple disease pathogenesis. Therefore, efforts to define strategies to selectively modulate cGAS-STING, inflammasomes and pyroptosis in different disease settings have been or are ongoing. In this review, we will describe how this mechanistic understanding is driving possible therapeutics targeting this crosstalk network, focusing on the interacting or regulatory proteins, pathways, and a regulatory mitochondrial hub between cGAS-STING, inflammasomes, and pyroptosis. SHORT CONCLUSION This review aims to provide insight into the critical roles and regulatory mechanisms of the crosstalk network of cGAS-STING, inflammasomes and pyroptosis, and to highlight some promising directions for future research and intervention.
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Affiliation(s)
- Jingwen Liu
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
| | - Jing Zhou
- The Second Hospital of Ningbo, Ningbo, 315099, China
| | - Yuling Luan
- Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Xiaoying Li
- Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200080, China
| | - Xiangrui Meng
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
| | - Wenhao Liao
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
| | - Jianyuan Tang
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China.
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China.
| | - Zheilei Wang
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China.
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China.
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Dong W, Peng Q, Liu Z, Xie Z, Guo X, Li Y, Chen C. Estrogen plays an important role by influencing the NLRP3 inflammasome. Biomed Pharmacother 2023; 167:115554. [PMID: 37738797 DOI: 10.1016/j.biopha.2023.115554] [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: 07/24/2023] [Revised: 09/16/2023] [Accepted: 09/18/2023] [Indexed: 09/24/2023] Open
Abstract
The nucleotide-binding oligomerization domain-like receptor protein 3 (NLRP3) inflammasome is an important part of the natural immune system that plays an important role in many diseases. Estrogen is a sex hormone that plays an important role in controlling reproduction and regulates many physiological and pathological processes. Recent studies have indicated that estrogen is associated with disease progression. Estrogen can ameliorate some diseases (e. g, sepsis, mood disturbances, cerebral ischemia, some hepatopathy, Parkinson's disease, amyotrophic lateral sclerosis, inflammatory bowel disease, spinal cord injury, multiple sclerosis, myocardial ischemia/reperfusion injury, osteoarthritis, and renal fibrosis) by inhibiting the NLRP3 inflammasome. Estrogen can also promote the development of diseases (e.g., ovarian endometriosis, dry eye disease, and systemic lupus erythematosus) by upregulating the NLRP3 inflammasome. In addition, estrogen has a dual effect on the development of cancers and asthma. However, the mechanism of these effects is not summarized. This article reviewed the progress in understanding the effects of estrogen on the NLRP3 inflammasome and its mechanisms in recent years to provide a theoretical basis for an in-depth study.
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Affiliation(s)
- Wanglin Dong
- Institute of Nursing and Health, College of Nursing and Health, Henan University, Kaifeng, Henan, China
| | - Qianwen Peng
- Institute of Nursing and Health, College of Nursing and Health, Henan University, Kaifeng, Henan, China
| | - Zhuoxin Liu
- Clinical College of Medicine, Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Zhenxing Xie
- School of Basic Medical Science, Henan University, Jinming Avenue, Kaifeng, Henan 475004, China.
| | - Xiajun Guo
- Institute of Nursing and Health, College of Nursing and Health, Henan University, Kaifeng, Henan, China
| | - Yuanyuan Li
- Institute of Nursing and Health, College of Nursing and Health, Henan University, Kaifeng, Henan, China
| | - Chaoran Chen
- Institute of Nursing and Health, College of Nursing and Health, Henan University, Kaifeng, Henan, China.
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He W, Dong H, Wu C, Zhong Y, Li J. The role of NLRP3 inflammasome in sepsis: A potential therapeutic target. Int Immunopharmacol 2023; 115:109697. [PMID: 37724951 DOI: 10.1016/j.intimp.2023.109697] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/28/2022] [Accepted: 01/03/2023] [Indexed: 01/22/2023]
Abstract
Sepsis is the host immune imbalance following infection and leads to organ dysfunction, with highly complicated pathophysiology. To date, sepsis still lacks effective therapies with high mortality rates. Recently, numerous studies have highlighted the potential of NLRP3 inflammasome as a therapeutic target during sepsis. NLRP3 inflammasome is a protein complex that could induce the activation of caspase-1 and the following release of pro-inflammatory cytokines such as IL-1β and IL-18. It was demonstrated that NLRP3 inflammasome was involved in the development and progression of sepsis. In contrast, inhibition of NLRP3 inflammasome activation could mitigate the inflammatory response, protect organ function, and improve outcomes and mortality. This paper illustrated the activation pathways of the NLRP3 inflammasome and its possible molecular mechanisms in the pathophysiology of sepsis. Meanwhile, the beneficial effects of inhibiting NLRP3 activation in sepsis-related organ damage were also presented. In addition, the diverse role of NLRP3 inflammasome in bacterial clearance was addressed. Of note, several herbal extracts targeting NLRP3 inflammasome in the treatment of sepsis were emphasized. We hope that this paper could provide a basis for further drug research targeting NLRP3 inflammasome.
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Affiliation(s)
- Wenfang He
- Department of Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Haiyun Dong
- Department of Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Chenfang Wu
- Department of Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yanjun Zhong
- Department of Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Jinxiu Li
- Department of Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, China.
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Shang J, Zhao F, Cao Y, Ping F, Wang W, Li Y. HMGB1 mediates lipopolysaccharide-induced macrophage autophagy and pyroptosis. BMC Mol Cell Biol 2023; 24:2. [PMID: 36658496 PMCID: PMC9854035 DOI: 10.1186/s12860-023-00464-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 01/17/2023] [Indexed: 01/21/2023] Open
Abstract
Autophagy and pyroptosis of macrophages play important protective or detrimental roles in sepsis. However, the underlying mechanisms remain unclear. High mobility group box protein 1 (HMGB1) is associated with both pyroptosis and autophagy. lipopolysaccharide (LPS) is an important pathogenic factor involved in sepsis. Lentivirus-mediated HMGB1 shRNA was used to inhibit the expression of HMGB1. Macrophages were treated with acetylation inhibitor (AA) to suppress the translocation of HMGB1 from the nucleus to the cytosol. Autophagy and pyroptosis-related protein expressions were detected by Western blot. The levels of caspase-1 activity were detected and the rate of pyroptotic cells was detected by flow cytometry. LPS induced autophagy and pyroptosis of macrophages at different stages, and HMGB1 downregulation decreased LPS-induced autophagy and pyroptosis. Treatment with acetylation inhibitor (anacardic acid) significantly suppressed LPS-induced autophagy, an effect that was not reversed by exogenous HMGB1, suggesting that cytoplasmic HMGB1 mediates LPS-induced autophagy of macrophages. Anacardic acid or an anti-HMGB1 antibody inhibited LPS-induced pyroptosis of macrophages. HMGB1 alone induced pyroptosis of macrophages and this effect was inhibited by anti-HMGB1 antibody, suggesting that extracellular HMGB1 induces macrophage pyroptosis and mediates LPS-induced pyroptosis. In summary, HMGB1 plays different roles in mediating LPS-induced autophagy and triggering pyroptosis according to subcellular localization.
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Affiliation(s)
- Jiawei Shang
- grid.412528.80000 0004 1798 5117Department of Critical Care Medicine, Shanghai Jiaotong University Affiliated Sixth People’s Hospital, Shanghai, 200233 People’s Republic of China
| | - Feng Zhao
- grid.8547.e0000 0001 0125 2443Department of Critical Care Medicine, Fudan University Huashan Hospital, Shanghai, 200040 China
| | - Yongmei Cao
- grid.412538.90000 0004 0527 0050Department of Critical Care Medicine, School of Medicine, Shanghai Tenth People’s Hospital, Tongji University, Shanghai, 200072 China
| | - Feng Ping
- grid.412528.80000 0004 1798 5117Department of Critical Care Medicine, Shanghai Jiaotong University Affiliated Sixth People’s Hospital, Shanghai, 200233 People’s Republic of China
| | - Wei Wang
- grid.412528.80000 0004 1798 5117Department of Critical Care Medicine, Shanghai Jiaotong University Affiliated Sixth People’s Hospital, Shanghai, 200233 People’s Republic of China
| | - Yingchuan Li
- grid.412538.90000 0004 0527 0050Department of Critical Care Medicine, School of Medicine, Shanghai Tenth People’s Hospital, Tongji University, Shanghai, 200072 China
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Huang W, Wang X, Xie F, Zhang H, Liu D. Serum NLRP3: A biomarker for identifying high-risk septic patients. Cytokine 2021; 149:155725. [PMID: 34634653 DOI: 10.1016/j.cyto.2021.155725] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 09/29/2021] [Accepted: 09/30/2021] [Indexed: 12/29/2022]
Abstract
BACKGROUND Over-activation of the NLRP3 inflammasome can lead to sepsis. NLRP3 is an essential protein in the classical pathway of pyroptosis. This study assessed the use of serum NLRP3 level as a potential inflammatory biomarker in septic patients. METHODS Patients were categorized into five groups: healthy controls (n = 30), ICU controls (n = 22), infection (n = 19), septic non-shock (n = 33), and septic shock (n = 83). Serum NLRP3 levels were measured by enzyme-linked immunosorbent assay for all patients upon enrollment. Clinical parameters and laboratory test data (APACHE II, SOFA, and lactate) were also assessed. Moreover, the ability of serum NLRP3 levels to predict sepsis was determined by the area under the curve (AUC) analysis. RESULTS The NLRP3 levels in the septic shock group was significantly higher (431.89, 386.61-460.21 pg/mL) than that in the healthy control group (23.24, 9.38-49.73 pg/mL), ICU control group (74.82, 62.71-85.93 pg/mL), infection group (114.34, 99.21-122.56 pg/mL), and septic non-shock group (136.99, 128.80-146.98 pg/mL; P<0.001 for all comparisons). Additionally, the AUC indicated that the ability of serum NLRP3 levels to predict sepsis and septic shock incidences was not lower than that of the SOFA score. Patients with higher NLRP3 serum levels (>147.72 pg/mL) had significantly increased 30-day mortality rate. CONCLUSIONS NLRP3 is useful for the early identification of high-risk septic patients, particularly septic shock patients. Moreover, elevated NRLP3 levels could result in poor septic prediction outcomes.
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Affiliation(s)
- Wei Huang
- Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Xiaoting Wang
- Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China.
| | - Fang Xie
- Center of Clinical Laboratory, Zhongshan Hospital, Medical College of Xiamen University, Xiamen 361004, China
| | - Hongmin Zhang
- Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Dawei Liu
- Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China.
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Wann SR, Chi PL, Huang WC, Cheng CC, Chang YT. Combination therapy of iPSC-derived conditioned medium with ceftriaxone alleviates bacteria-induced lung injury by targeting the NLRP3 inflammasome. J Cell Physiol 2021; 237:1299-1314. [PMID: 34612516 DOI: 10.1002/jcp.30596] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 09/16/2021] [Accepted: 09/20/2021] [Indexed: 01/14/2023]
Abstract
The lung is the first and most frequent organ to fail among sepsis patients. The mortality rate of sepsis-related acute lung injury (ALI) is high. Despite appropriate antimicrobial therapy, no treatment strategies are available for sepsis-induced ALI. Stem cell-mediated paracrine signaling is a potential treatment method for various diseases. This study aimed to examine the effects of induced pluripotent stem cell-derived conditioned medium (iPSC-CM) combined with antibiotics on ALI in a rat model of Escherichia coli-induced sepsis. Rats were administered either iPSC-CM or the vehicle (saline) with antibiotics (ceftriaxone). After 72 h, liquid biopsy, bronchoalveolar lavage fluid (BALF), and tissues were harvested for analysis. Survival rates were observed for up to 3 days. Furthermore, we examined the effects of iPSC-CM on cytokine production, metalloproteinase 9 (MMP-9) expression, and NLRP3-ASC interaction in RAW264.7 cells stimulated with lipopolysaccharide/interferon-γ (LPS/IFN-γ). Combined treatment of iPSC-CM with antibiotics significantly improved survival in E. coli-infected rats (p = 0.0006). iPSC-CM ameliorated E. coli-induced infiltration of macrophages, reducing the number of cells in BALF, and suppressing interleukin (IL)-1β, MIP-2, IL-6, and MMP-9 messenger RNA in lung sections. iPSC-CM treatment attenuated NLRP3 expression and inhibited NLRP3 inflammasome activation by disrupting NLRP3-mediated ASC complex formation in LPS/IFN-γ-primed RAW264.7 cells. This study reveals the mechanisms underlying iPSC-CM-conferred anti-inflammatory activity in ALI through the attenuation of macrophage recruitment to the lung, thus inactivating NLRP3 inflammasomes in macrophages. iPSC-CM therapy may be a useful adjuvant treatment to reduce sepsis-related mortality by ameliorating ALI.
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Affiliation(s)
- Shue-Ren Wann
- Department of Nursing, Shu-Zen Junior College of Medicine and Management, Kaohsiung City, Taiwan.,Department of Medicine, Kaohsiung Veterans General Hospital, Pingtung Branch, Pintung, Taiwan
| | - Pei-Ling Chi
- Department of Pathology and Laboratory Medicine, Kaohsiung Veterans General Hospital, Kaohsiung City, Taiwan
| | - Wei-Chun Huang
- School of Medicine, National Yang-Ming Chiao Tung University, Taipei City, Taiwan.,Department of Critical Care Medicine, Kaohsiung Veterans General Hospital, Kaohsiung City, Taiwan.,Department of Physical Therapy, Fooyin University, Kaohsiung, Taiwan.,Graduate Institute of Clinical Medicine, Kaohsiung Medical University, Kaohsiung City, Taiwan
| | - Chin-Chang Cheng
- Department of Critical Care Medicine, Kaohsiung Veterans General Hospital, Kaohsiung City, Taiwan
| | - Yun-Te Chang
- Department of Nursing, Shu-Zen Junior College of Medicine and Management, Kaohsiung City, Taiwan.,School of Medicine, National Yang-Ming Chiao Tung University, Taipei City, Taiwan.,Department of Emergency Medicine, Kaohsiung Veterans General Hospital, Kaohsiung City, Taiwan.,Departement of Nursing, Yuh-Ing Junior College of Health Care and Management, Kaohsiung City, Taiwan
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Ren G, Zhou Q, Lu M, Wang H. Rosuvastatin corrects oxidative stress and inflammation induced by LPS to attenuate cardiac injury by inhibiting the NLRP3/TLR4 pathway. Can J Physiol Pharmacol 2021; 99:964-973. [PMID: 33641435 DOI: 10.1139/cjpp-2020-0321] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Rosuvastatin has been found to possess antioxidant and anti-inflammatory properties. The aim of the current study was to evaluate whether rosuvastatin was effective in attenuating cardiac injury in lipopolysaccharide (LPS) - challenged mice and H9C2 cells and identify the underlying mechanisms, focusing on the nod-like receptor protein 3 (NLRP3)/toll-like receptor 4 (TLR4) pathway. Cardiac injury, cardiac function, apoptosis, oxidative stress, inflammatory response, and the NLRP3/TLR4 pathway were evaluated in both in vivo and in vitro studies. LPS-induced cardiomyocyte injury was markedly attenuated by rosuvastatin treatment, evidenced by increased cell proliferation of H9C2 cells, rescued cardiac function, and improved morphological changes in mice and reduced lactate dehydrogenase (LDH), creatine kinase MB fraction (CK-MB), and troponin I (cTnI) in serum. Apoptosis was clearly ameliorated in myocardial tissue and H9C2 cells co-treated with rosuvastatin. In addition, after LPS challenge, excessive oxidative stress was present, indicated by increases in malondialdehyde (MDA) content, NADPH activity, and reactive oxygen species (ROS) production and decreased superoxide dismutase (SOD) activity. Rosuvastatin improved all the indicators of oxidative stress, with an effect similar to that of N-acetylcysteine (NAC) (an ROS scavenger). Notably, LPS-exposed H9C2 cells and mice showed significant NLRP3 and TLR4/nuclear factor-κB (NF-κB) pathway activation and inflammatory responses. Administration of rosuvastatin reduced the increases in NLRP3, apoptosis-associated speck-like protein containing a caspase recruitment domain (ASC), pro-caspase-1, TLR4, and p65 expression and decreased the tumor necrosis factor α (TNF-α), interleukin 1β (IL-1β), IL-18, and IL-6 contents, with an effect similar to that of MCC950 (an NLRP3 inhibitor). In conclusion, inhibition of the inflammatory response and oxidative stress contributes to cardioprotective effect of rosuvastatin against cardiac injury induced by LPS, and the effect of rosuvastatin was achieved through inactivation of the NF-κB/NLRP3 pathway.
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Affiliation(s)
- Guocheng Ren
- Department of Circulatory Medicine, Chaoyang Central Hospital, Chaoyang 122000, China
| | - Qiujie Zhou
- Department of Circulatory Medicine, Chaoyang Central Hospital, Chaoyang 122000, China
| | - Meili Lu
- Key Laboratory of Cardiovascular and Cerebrovascular Drug Research of Liaoning Province, Jinzhou Medical University, Jinzhou 121001, China
| | - Hongxin Wang
- Key Laboratory of Cardiovascular and Cerebrovascular Drug Research of Liaoning Province, Jinzhou Medical University, Jinzhou 121001, China
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Qi HM, Cao Q, Liu Q. TLR4 regulates vascular smooth muscle cell proliferation in hypertension via modulation of the NLRP3 inflammasome. Am J Transl Res 2021; 13:314-325. [PMID: 33527026 PMCID: PMC7847527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 09/11/2020] [Indexed: 06/12/2023]
Abstract
UNLABELLED Backgroud: Toll-like receptor 4 (TLR4), a key mediator of inflammatory responses, which is associated with vascular remodeling. The association between TLR4 and NOD-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome in the regulation of vascular smooth muscle cell (VSMC) proliferation remains unclear. This study was to explore the role and underlying mechanisms of TLR4 in the proliferation of VSMC in hypertension. METHODS VSMC proliferation after TLR4 overexpression or downregulation was determined by CCK-8, EdU Incorporation and colony formation assays. Western blots were carried out to investigate the expression of TLR4 and NLRP3 inflammasome components in VSMCs. Next, blood pressure measurements and Hematoxylin and Eosin (HE) staining assays were performed in spontaneously hypertensive rats (SHR). Media thickness (M) and diameter lumen (L) were measured as indicators of vascular remodeling. The expression of TLR4, PCNA and NLRP3 inflammasome complex was analyzed by Western blots in the aorta of SHR. RESULTS We showed that TLR4 overexpression with cDNA enhanced, while knockdown of TLR4 with shRNA inhibited Ang II-induced VSMC proliferation. Besides, TLR4 overexpression upregulated the proteion expression of the NLRP3 inflammasome components including NLRP3, ASC and caspase-1, whereas their corresponding levels of expression were observed to decrease in TLR4 shRNA-transfected VSMCs. Knockdown of TLR4 attenuated vascular remodeling, blood pressure (BP) and the levels of NLRP3, ASC, caspase-1, IL-1β and IL-18 in SHR aortas. CONCLUSION This study revealed that TLR4 regulated Ang II-induced VSMC proliferation through modulating the NLRP3 inflammasome. Knockdown of TLR4 attenuated the BP and vascular remodeling by inhibiting the expression of the NLRP3 inflammasome component in SHR. Our results support that TLR4 regulates VSMC proliferation in hypertension via triggering the NLRP3 inflammasome.
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Affiliation(s)
- Hui-Meng Qi
- Department of General Practice, The First Hospital of China Medical UniversityShenyang, China
| | - Qin Cao
- Department of Gastroenterolog, The First Hospital of China Medical UniversityShenyang, China
| | - Qiang Liu
- Department of Nephrology, The First Hospital of China Medical UniversityShenyang, China
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Shi CX, Wang Y, Chen Q, Jiao FZ, Pei MH, Gong ZJ. Extracellular Histone H3 Induces Pyroptosis During Sepsis and May Act Through NOD2 and VSIG4/NLRP3 Pathways. Front Cell Infect Microbiol 2020; 10:196. [PMID: 32432055 PMCID: PMC7216582 DOI: 10.3389/fcimb.2020.00196] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 04/14/2020] [Indexed: 12/17/2022] Open
Abstract
Background: Histones could be released from the nucleus when stimulated. Increasing evidence has shown that extracellular histones are associated with a variety of inflammation and diseases. Nucleotide binding oligomerzation domain 2 (NOD2) belongs to the NOD like receptor (NLR) family and is reported to promote apoptosis and aggravate inflammatory response. And V-set and immunoglobulin domain containing 4 (VSIG4), a B7 family-related protein, has been confirmed to mediate transcriptional inhibition of nucleotide-binding oligomerization domain-like receptor protein 3 (NLRP3). However, little is known about the impact of extracellular histones on NOD2 or VSIG4 signal transduction. In this study, we aim to explore the effect and mechanism of extracellular histone H3 on pyroptosis. Aim: The purpose of this work was to investigate the mechanism of extracellular histone H3 on pyroptosis in sepsis. Methods: Lipopolysaccharide (LPS) and histone H3 were used to induce sepsis mice model and damage in ANA-1 macrophages. H3 antibody was applied to antagonize the effect of histone H3. NOD2 inhibitor NOD-IN-1 and VSIG4-siRNA were used to investigate the mechanism of histone H3 on pyroptosis. Enzyme linked immune sorbent assay (ELISA) was applied to detect the level of extracellular histone H3. Real-time PCR and Western blotting were employed to detect the key mRNA and protein levels. The pathology of tissues was detected. Results: The level of extracellular histone H3 was increased after LPS stimulation. The mRNA and protein levels of NLRP3, caspase-1, gasdermin D (GSDMD), interleukin (IL)-1β, IL-18 were increased in LPS group, but suppressed by H3 antibody. And the expression of NOD2, receptor-interacting protein 2 (RIP2) was elevated compared with control group. The expression of VSIG4 was inhibited by LPS and suppression of H3 promoted the protein level of VSIG4. H3 antibody alleviated pathological damages in tissues. Furthermore, the mRNA and protein levels of NOD2 in H3 group was higher compared with control group. The mRNA and protein levels of VSIG4 in H3 group was decreased compared with control group, but up-regulated by NOD-IN-1. Besides, the mRNA and protein levels of VSIG4 in NOD-IN-1 + VSIG4-siRNA group was elevated compared with VSIG4-siRNA group. Conclusions: Extracellular histone H3 induced by LPS could cause pyroptosis during sepsis via NOD2 and VSIG4/NLRP3 pathway.
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Affiliation(s)
- Chun-Xia Shi
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yao Wang
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan, China
| | - Qian Chen
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan, China
| | - Fang-Zhou Jiao
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan, China
| | - Mao-Hua Pei
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan, China
| | - Zuo-Jiong Gong
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan, China
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Luo M, Meng J, Yan J, Shang F, Zhang T, Lv D, Li C, Yang X, Luo S. Role of the Nucleotide-Binding Domain-Like Receptor Protein 3 Inflammasome in the Endothelial Dysfunction of Early Sepsis. Inflammation 2020; 43:1561-1571. [DOI: 10.1007/s10753-020-01232-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Danielski LG, Giustina AD, Bonfante S, Barichello T, Petronilho F. The NLRP3 Inflammasome and Its Role in Sepsis Development. Inflammation 2019; 43:24-31. [DOI: 10.1007/s10753-019-01124-9] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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15
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Chen H, Mao X, Meng X, Li Y, Feng J, Zhang L, Zhang Y, Wang Y, Yu Y, Xie K. Hydrogen alleviates mitochondrial dysfunction and organ damage via autophagy‑mediated NLRP3 inflammasome inactivation in sepsis. Int J Mol Med 2019; 44:1309-1324. [PMID: 31432098 PMCID: PMC6713420 DOI: 10.3892/ijmm.2019.4311] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Accepted: 07/26/2019] [Indexed: 12/17/2022] Open
Abstract
Sepsis is a highly heterogeneous syndrome that is caused by a dysregulated host response to infection. The disproportionate inflammatory response to invasive infection is a triggering event inducing sepsis. The activation of inflammasomes in sepsis can amplify inflammatory responses. It has been reported that damaged mitochondria contribute to NACHT, LRR and PYD domains-containing protein 3 (NLRP3) inflammasome-related sepsis. Our previous study revealed that hydrogen (H2) exerts anti-inflammatory effects in sepsis but the detailed mechanism remains to be elucidated. In the present study, septic mice induced by cecal ligation and puncture (CLP) and macrophages induced by lipopolysaccha-ride (LPS) were used as models of sepsis in vivo and in vitro, respectively. An inducer and inhibitor of autophagy and the NLRP3 inflammasome were administered to investigate the detailed mechanism of action of H2 treatment in sepsis. The results demonstrated that LPS and ATP led to NLRP3 inflammasome pathway activation, excessive cytokine release, mitochondrial dysfunction and the activation of autophagy. CLP induced organ injury and NLRP3 pathway activation. H2 treatment ameliorated vital organ damage, the inflammatory response, mitochondrial dysfunction and NLRP3 pathway activation, and promoted autophagy in macrophages induced by LPS and in CLP mice. However, the inhibitor of autophagy and the inducer of NLRP3 reversed the protective effect of H2 against organ damage, the inflammatory response and mitochondrial dysfunction in vivo and in vitro. Collectively, the results demonstrated that H2 alleviated mitochondrial dysfunction and cytokine release via autophagy-mediated NLRP3 inflammasome inactivation.
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Affiliation(s)
- Hongguang Chen
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Xing Mao
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Xiaoyin Meng
- Department of Gynecology and Obstetrics, Tianjin Hospital, Tianjin 300211, P.R. China
| | - Yuan Li
- Department of Anesthesiology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin 300060, P.R. China
| | - Jingcheng Feng
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Linlin Zhang
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Yang Zhang
- Department of Anesthesiology, Tianjin Fourth Center Hospital, Tianjin 300140, P.R. China
| | - Yaoqi Wang
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Yonghao Yu
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Keliang Xie
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
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Liu H, Sun Y, Zhang Y, Yang G, Guo L, Zhao Y, Pei Z. Role of Thymoquinone in Cardiac Damage Caused by Sepsis from BALB/c Mice. Inflammation 2019; 42:516-525. [PMID: 30343389 DOI: 10.1007/s10753-018-0909-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Sepsis is a major health complication causing patient mortality and increased healthcare costs. Cardiac dysfunction, an important consequence of sepsis, affects mortality. We previously reported that thymoquinone (TQ) protected against hyperlipidemia and doxorubicin-induced cardiac damage. This study investigated the possible protective effects of TQ against cardiac damage in septic BALB/c mice. Eight-week-old male BALB/c mice were divided into four groups: control, TQ, cecal ligation and puncture (CLP), and TQ + CLP. CLP was performed after 2-week TQ gavage. After 48 h, we measured the histopathological alterations of the cardiac tissue and the plasma levels of troponin-T (cTnT) and ATP. We evaluated autophagy (p62 and beclin 1), pyroptosis (NLRP3, caspase-1, interleukin [IL]-1β, and IL-18) at the gene and protein levels and IL-6 and tumor necrosis factor-α (TNF-α) at the gene level. Our results demonstrated that TQ administration significantly reduced intestinal histological alterations. TQ inhibited plasma cTnT levels; improved ATP; significantly inhibited p62, NLRP3, caspase-1, IL-1β, IL-18, IL-6, TNF-α, and MCP-1expressions; and increased beclin 1 and IL-10 level. The phosphatidylinositide 3-kinase level was significantly decreased in the TQ + CLP group versus the CLP group. These results suggest that TQ effectively modulates autophagy, pyroptosis, and pro-inflammatory, making it important in the treatment of sepsis-induced cardiac damage.
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Affiliation(s)
- Hongyang Liu
- Department of Heart Intensive Care Unit, The First Affiliated Hospital of Dalian Medical University, No.193 Lianhe Road, Dalian, China
| | - Yan Sun
- Department of Cardiology, Zhejiang Rongjun Hospital, No.309 Shuangyuan Road, Jiaxing, Zhejiang, China
| | - Ying Zhang
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, 193# Lianhe Road, Dalian, China
| | - Guang Yang
- Department of Heart Intensive Care Unit, The First Affiliated Hospital of Dalian Medical University, No.193 Lianhe Road, Dalian, China
| | - Lipeng Guo
- Department of Cardiology, Dalian Third People's Hospital Affiliated to Dalian Medical University, No.40 Qianshan Road, Dalian, China
| | - Yue Zhao
- Graduate school of Dalian Medical University, No.9 Lvshun South Road, Dalian, China
| | - Zuowei Pei
- Department of Cardiology, Affiliated Zhongshan Hospital of Dalian University, No. 6 Jiefang Street, Dalian, 116001, China.
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Magnesium protects against sepsis by blocking gasdermin D N-terminal-induced pyroptosis. Cell Death Differ 2019; 27:466-481. [PMID: 31209359 DOI: 10.1038/s41418-019-0366-x] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 04/24/2019] [Accepted: 05/30/2019] [Indexed: 12/24/2022] Open
Abstract
Hypomagnesemia is a significant risk factor for critically ill patients to develop sepsis, a life-threatening disease with a mortality rate over 25%. Our clinic data analysis showed that hypomagnesemia is associated with a decreased monocyte count in septic patients. At the cellular level, we found that Mg2+ inhibits pyroptosis. Specifically, Mg2+ limits the oligomerization and membrane localization of gasdermin D N-terminal (GSDMD-NT) upon the activation of either the canonical or noncanonical pyroptotic pathway. Mechanistically, we demonstrated that Ca2+ influx is a prerequisite for the function of GSDMD-NT. Mg2+ blocks Ca2+ influx by inhibiting the ATP-gated Ca2+ channel P2X7, thereby impeding the function of GSDMD-NT and inhibiting lipopolysaccharide (LPS)-induced noncanonical pyroptosis. Furthermore, Mg2+ administration protects mice from LPS-induced lethal septic shock. Together, our data reveal the underlying mechanism of how Mg2+ inhibits pyroptosis and suggest potential clinic applications of magnesium supplementation for sepsis prevention and treatment.
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18
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Jiang Y, Yang W, Gui S. Procyanidin B2 protects rats from paraquat-induced acute lung injury by inhibiting NLRP3 inflammasome activation. Immunobiology 2018; 223:555-561. [DOI: 10.1016/j.imbio.2018.07.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Revised: 05/19/2018] [Accepted: 07/02/2018] [Indexed: 12/16/2022]
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Recent Advances in the Molecular Mechanisms Underlying Pyroptosis in Sepsis. Mediators Inflamm 2018; 2018:5823823. [PMID: 29706799 PMCID: PMC5863298 DOI: 10.1155/2018/5823823] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Accepted: 01/22/2018] [Indexed: 12/25/2022] Open
Abstract
Sepsis is recognized as a life-threatening organ dysfunctional disease that is caused by dysregulated host responses to infection. Up to now, sepsis still remains a dominant cause of multiple organ dysfunction syndrome (MODS) and death among severe condition patients. Pyroptosis, originally named after the Greek words “pyro” and “ptosis” in 2001, has been defined as a specific programmed cell death characterized by release of inflammatory cytokines. During sepsis, pyroptosis is required for defense against bacterial infection because appropriate pyroptosis can minimize tissue damage. Even so, pyroptosis when overactivated can result in septic shock, MODS, or increased risk of secondary infection. Proteolytic cleavage of gasdermin D (GSDMD) by caspase-1, caspase-4, caspase-5, and caspase-11 is an essential step for the execution of pyroptosis in activated innate immune cells and endothelial cells stimulated by cytosolic lipopolysaccharide (LPS). Cleaved GSDMD also triggers NACHT, LRR, and PYD domain-containing protein (NLRP) 3-mediated activation of caspase-1 via an intrinsic pathway, while the precise mechanism underlying GSDMD-induced NLRP 3 activation remains unclear. Hence, this study provides an overview of the recent advances in the molecular mechanisms underlying pyroptosis in sepsis.
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20
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Wu D, Shi L, Li P, Ni X, Zhang J, Zhu Q, Qi Y, Wang B. Intermedin 1-53 Protects Cardiac Fibroblasts by Inhibiting NLRP3 Inflammasome Activation During Sepsis. Inflammation 2018; 41:505-514. [PMID: 29192367 DOI: 10.1007/s10753-017-0706-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Sepsis is a disease that occurs as a result of systemic inflammatory response syndrome (SIRS) in response to an infection, contributing to multiple organ dysfunction and a high mortality rate. Interleukin-lβ (IL-1β) is a cytokine that plays critical roles in inflammation and cardiac dysfunction during severe sepsis. Intermedin1-53 (IMD1-53) has been recently discovered to possess potential endogenous anti-inflammatory and strong cardiovascular protective effects. To investigate whether IMD1-53 can inhibit the NLRP3/caspase-1/IL-1β pathway to alleviate cardiac injury and rescue heart function, sepsis was induced in vivo by caecal ligation and puncture (CLP) surgery, and lipopolysaccharides were used as septic stressors for cardiac fibroblasts (CFs) in vitro. The expressions of IMD1-53 receptors in sepsis rat heart were increased. After IMD1-53 treatment, inflammation caused by sepsis in vivo was greatly reduced, as shown by the downregulation of apoptosis-associated speck-like protein containing a caspase recruitment domain (ASC), nucleotide-binding domain and leucine-rich repeat containing family, pyrin containing 3 (NLRP3), pro-IL-1β, caspase 1, and nuclear translocation of nuclear factor-κB (NF-kB) protein levels. In addition, cardiac function was significantly improved and mean arterial blood pressure (MABP) increased by 34.8% (P < 0.05) which almost back to normal. Surprisingly, IMD1-53 inhibited cell apoptosis, as caspase 3 activity and Bax expression was significantly reduced in the heart upon IMD1-53 treatment. IMD1-53 abolished the upregulation of ASC, NLRP3, and caspase 1 protein levels in CFs induced by lipopolysaccharide (LPS). IMD1-53 increased cell survival rates and inhibited IL-1β production in the cell culture medium. IMD1-53 can protect against inflammation and heart injury during sepsis via attenuating the NLRP3/caspase-1/IL-1β pathway.
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Affiliation(s)
- Di Wu
- The Peking University Aerospace School of Clinical Medicine, Peking University Health Science Center, Beijing, 100191, China
| | - Lin Shi
- The Peking University People's Hospital, Beijing, 100191, China
| | - Pengyang Li
- Texas Heart Institute, Houston, TX, 77030, USA
| | - Xianqiang Ni
- Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, Beijing, 100191, China
| | - Jinsheng Zhang
- Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, Beijing, 100191, China
| | - Qing Zhu
- Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, Beijing, 100191, China
| | - Yongfen Qi
- Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, Beijing, 100191, China.
| | - Bin Wang
- The Peking University Aerospace School of Clinical Medicine, Peking University Health Science Center, Beijing, 100191, China.
- The First Affiliated Hospital of Shantou University Medical College, Guangdong, 515041, China.
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A Novel Mechanism of Mesenchymal Stromal Cell-Mediated Protection against Sepsis: Restricting Inflammasome Activation in Macrophages by Increasing Mitophagy and Decreasing Mitochondrial ROS. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:3537609. [PMID: 29636842 PMCID: PMC5831900 DOI: 10.1155/2018/3537609] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Revised: 11/02/2017] [Accepted: 12/04/2017] [Indexed: 01/08/2023]
Abstract
Sepsis, a systemic inflammatory response to infection, is the leading cause of death in the intensive care unit (ICU). Previous studies indicated that mesenchymal stromal cells (MSCs) might have therapeutic potential against sepsis. The current study was designed to investigate the effects of MSCs on sepsis and the underlying mechanisms focusing on inflammasome activation in macrophages. The results demonstrated that the bone marrow-derived mesenchymal stem cells (BMSCs) significantly increased the survival rate and organ function in cecal ligation and puncture (CLP) mice compared with the control-grouped mice. BMSCs significantly restricted NLRP3 inflammasome activation, suppressed the generation of mitochondrial ROS, and decreased caspase-1 and IL-1β activation when cocultured with bone marrow-derived macrophages (BMDMs), the effects of which could be abolished by Mito-TEMPO. Furthermore, the expression levels of caspase-1, IL-1β, and IL-18 in BMDMs were elevated after treatment with mitophagy inhibitor 3-MA. Thus, BMSCs exert beneficial effects on inhibiting NLRP3 inflammasome activation in macrophages primarily via both enhancing mitophagy and decreasing mitochondrial ROS. These findings suggest that restricting inflammasome activation in macrophages by increasing mitophagy and decreasing mitochondrial ROS might be a crucial mechanism for MSCs to combat sepsis.
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Low-dose Sinapic Acid Abates the Pyroptosis of Macrophages by Downregulation of lncRNA-MALAT1 in Rats With Diabetic Atherosclerosis. J Cardiovasc Pharmacol 2018; 71:104-112. [DOI: 10.1097/fjc.0000000000000550] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Sun HJ, Ren XS, Xiong XQ, Chen YZ, Zhao MX, Wang JJ, Zhou YB, Han Y, Chen Q, Li YH, Kang YM, Zhu GQ. NLRP3 inflammasome activation contributes to VSMC phenotypic transformation and proliferation in hypertension. Cell Death Dis 2017; 8:e3074. [PMID: 28981106 PMCID: PMC5680591 DOI: 10.1038/cddis.2017.470] [Citation(s) in RCA: 174] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2017] [Revised: 08/17/2017] [Accepted: 08/22/2017] [Indexed: 01/12/2023]
Abstract
Inflammation is involved in pathogenesis of hypertension. NLRP3 inflammasome activation is a powerful mediator of inflammatory response via caspase-1 activation. The present study was designed to determine the roles and mechanisms of NLRP3 inflammasome in phenotypic modulation and proliferation of vascular smooth muscle cells (VSMCs) in hypertension. Experiments were conducted in spontaneously hypertensive rats (SHR) and primary aortic VSMCs. NLRP3 inflammasome activation was observed in the media of aorta in SHR and in the VSMCs from SHR. Knockdown of NLRP3 inhibited inflammasome activation, VSMC phenotypic transformation and proliferation in SHR-derived VSMCs. Increased NFκB activation, histone acetylation and histone acetyltransferase expression were observed in SHR-derived VSMCs and in media of aorta in SHR. Chromatin immunoprecipitation analysis revealed the increased histone acetylation, p65-NFκB and Pol II occupancy at the NLRP3 promoter in vivo and in vitro. Inhibition of NFκB with BAY11-7082 or inhibition of histone acetyltransferase with curcumin prevented the NLRP3 inflammasome activation, VSMC phenotype switching and proliferation in VSMCs from SHR. Moreover, curcumin repressed NFκB activation. Silencing of NLRP3 gene ameliorated hypertension, vascular remodeling, NLRP3 inflammasome activation and phenotype switching in the aorta of SHR. These results indicate that NLRP3 inflammasome activation response to histone acetylation and NFκB activation contributes to VSMC phenotype switching and proliferation and vascular remodeling in hypertension.
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Affiliation(s)
- Hai-Jian Sun
- Department of Physiology, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, Jiangsu 210029, China.,Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Xing-Sheng Ren
- Department of Physiology, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Xiao-Qing Xiong
- Department of Physiology, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Yun-Zhi Chen
- Department of Physiology, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Ming-Xia Zhao
- Department of Physiology, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Jue-Jin Wang
- Department of Physiology, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Ye-Bo Zhou
- Department of Physiology, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Ying Han
- Department of Physiology, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Qi Chen
- Department of Pathophysiology, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Yue-Hua Li
- Department of Pathophysiology, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Yu-Ming Kang
- Department of Physiology and Pathophysiology, Cardiovascular Research Center, Xi'an Jiaotong University School of Medicine, Xi'an, Shanxi 710061, China
| | - Guo-Qing Zhu
- Department of Physiology, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, Jiangsu 210029, China.,Department of Pathophysiology, Nanjing Medical University, Nanjing, Jiangsu 210029, China
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Jin L, Batra S, Jeyaseelan S. Deletion of Nlrp3 Augments Survival during Polymicrobial Sepsis by Decreasing Autophagy and Enhancing Phagocytosis. THE JOURNAL OF IMMUNOLOGY 2016; 198:1253-1262. [PMID: 28031338 DOI: 10.4049/jimmunol.1601745] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 11/25/2016] [Indexed: 01/07/2023]
Abstract
NLRP3 inflammasome is a critical player in innate immunity. Neutrophil recruitment to tissues and effective neutrophil function are critical innate immune mechanisms for bacterial clearance. However, the role of NLRP3 in neutrophil-dependent bacterial clearance in polymicrobial sepsis is unclear. In this study, we evaluated the role of NLRP3 in polymicrobial sepsis induced by cecal ligation and puncture (CLP). Our results showed protection from death in NLRP3-deficient (Nlrp3-/-) and NLRP3 inhibitor-treated wild-type (C57BL/6) mice. Nlrp3-/- and NLRP3 inhibitor-treated mice displayed lower bacterial load but no impairment in neutrophil recruitment to peritoneum. However, neutrophil depletion abrogated protection from death in Nlrp3-/- mice in response to CLP. Intriguingly, following CLP, Nlrp3-/- peritoneal cells (primarily neutrophils) demonstrate decreased autophagy, augmented phagocytosis, and enhanced scavenger receptor (macrophage receptor with collagenous structure) and mannose-binding leptin expression. These findings enhance our understanding of the critical role of NLRP3 in modulating autophagy and phagocytosis in neutrophils and suggest that therapies should be targeted to modulate autophagy and phagocytosis in neutrophils to control bacterial burden in tissues during CLP-induced polymicrobial sepsis.
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Affiliation(s)
- Liliang Jin
- Laboratory of Lung Biology, Department of Pathobiological Sciences and Center for Experimental Infectious Disease Research, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803; and
| | - Sanjay Batra
- Laboratory of Lung Biology, Department of Pathobiological Sciences and Center for Experimental Infectious Disease Research, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803; and
| | - Samithamby Jeyaseelan
- Laboratory of Lung Biology, Department of Pathobiological Sciences and Center for Experimental Infectious Disease Research, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803; and .,Division of Pulmonary and Critical Care, Department of Medicine, LSU Health Sciences Center, New Orleans, LA 70112
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Wang L, Ye H, Sun D, Meng T, Cao L, Wu M, Zhao M, Wang Y, Chen B, Xu X, Wang G, Hao H. Metabolic Pathway Extension Approach for Metabolomic Biomarker Identification. Anal Chem 2016; 89:1229-1237. [PMID: 27983783 DOI: 10.1021/acs.analchem.6b03757] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Discovery of metabolomic biomarkers represents an important task in disease diagnosis and therapy. Although the development of various analytical tools and online libraries facilitates the identification of biomarkers, the fast and reliable identification of new biomarkers that are not included in databases still represents a major bottleneck in the field of metabolomics. Here, we developed a metabolic pathway extension (MPE) approach to the fast characterization of metabolomic biomarkers. This approach was proposed based on a core concept that the whole metabolome is built from a limited number of initial metabolites via various kinds and multiple steps of metabolic reactions, and thus, theoretically, the whole metabolome might be mapped from the initial metabolites and metabolic reactions. Carnitine was used as an example of initial metabolites to validate this concept and the usefulness of MPE approach. The intragastric dosing of carnitine to mice induced a significant alternation of a total of 97 metabolites. Mass differences between each pair of metabolites were calculated and then matched with those of typical metabolic pathways automatically by an in-house developed program. Diagnostic ions and neutral losses were used for validating the matches. With this approach, 93 out of a total of 97 metabolites were putatively identified, while only half of them could be traced from the currently available online database. The MPE approach was further validated by applying to the identification of carnitine-associated biomarkers in a typical mice model of fasting, and extended to the development of bile acids submetabolome. Our study indicates that the MPE approach is highly useful for rapid and reliable identification of metabolically and structurally associated biomarkers.
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Affiliation(s)
- Lin Wang
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University , Tongjiaxiang #24, Nanjing 21009, China
| | - Hui Ye
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University , Tongjiaxiang #24, Nanjing 21009, China
| | - Di Sun
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University , Tongjiaxiang #24, Nanjing 21009, China
| | - Tuo Meng
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University , Tongjiaxiang #24, Nanjing 21009, China
| | - Lijuan Cao
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University , Tongjiaxiang #24, Nanjing 21009, China
| | - Mengqiu Wu
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University , Tongjiaxiang #24, Nanjing 21009, China
| | - Min Zhao
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University , Tongjiaxiang #24, Nanjing 21009, China
| | - Yun Wang
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University , Tongjiaxiang #24, Nanjing 21009, China
| | - Baoqiang Chen
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University , Tongjiaxiang #24, Nanjing 21009, China
| | - Xiaowei Xu
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University , Tongjiaxiang #24, Nanjing 21009, China
| | - Guangji Wang
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University , Tongjiaxiang #24, Nanjing 21009, China
| | - Haiping Hao
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University , Tongjiaxiang #24, Nanjing 21009, China
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