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Ayalasomayajula Y, Hesaraghatta A, Dantuluri N, Yassine J, Saleem F, Mansour H, Chayawatto C, Rangarajan N, Rangarajan S, Krishnan S, Panguluri SK. Influence of age and sex on physical, cardiac electrical and functional alterations in progressive hyperoxia treatment: A time course study in a murine model. Exp Gerontol 2024; 191:112435. [PMID: 38636569 DOI: 10.1016/j.exger.2024.112435] [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: 02/05/2024] [Revised: 03/29/2024] [Accepted: 04/15/2024] [Indexed: 04/20/2024]
Abstract
Oxygen supplementation is a widely used treatment for ICU patients. However, it can lead to hyperoxia, which in turn can result in oxidative stress, cardiac remodeling, and even mortality. This paper expands upon previous research conducted by our lab to establish time-dependent cardiac changes under hyperoxia. In this study, both young and aged mice (male and female) underwent 72 h of hyperoxia exposure and were monitored at 24-hour intervals for cardiac electrophysiological and functional parameters using ECG and electrocardiogram data. Our analysis showed that young male mice experienced significant weight loss as well as significant lung edema by 48 h. Although young male mice were highly susceptible to physical changes, they were resistant to early cardiac functional and electrophysiological changes compared to the other groups. Both young and aged female and aged males developed functional impairments by 24 h of hyperoxia exposure. Furthermore, sex and age differences were noted in the onset of electrophysiological changes. While some groups could resist early cardiac remodeling, our data suggests that 72 h of hyperoxia exposure is sufficient to induce significant cardiac remodeling across all age and sex groups. Our data establishes that time-dependent cardiac changes due to oxygen supplementation can have devastating consequences even with short exposure periods. These findings can aid in developing clinical practices for individuals admitted to the ICU by elucidating the impact of aging, sex, and length of stay under mechanical ventilation to limit hyperoxia-induced cardiac remodeling.
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Affiliation(s)
- Yashwant Ayalasomayajula
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Anagha Hesaraghatta
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Neha Dantuluri
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Jenna Yassine
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Faizan Saleem
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Hussein Mansour
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Chayapatou Chayawatto
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Nishank Rangarajan
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Sashank Rangarajan
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Smrithi Krishnan
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Siva Kumar Panguluri
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA; Cell Biology, Microbiology and Molecular Biology, College of Arts and Sciences, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA.
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2
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Wang X, Liu Y, Zhou Y, Zhou Y, Li Y. Curculigoside inhibits osteoarthritis <em>via</em> the regulation of NLRP3 pathway. Eur J Histochem 2023; 67:3896. [PMID: 38112591 PMCID: PMC10773194 DOI: 10.4081/ejh.2023.3896] [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: 10/23/2023] [Accepted: 11/27/2023] [Indexed: 12/21/2023] Open
Abstract
Osteoarthritis (OA) is characterized by degenerative articular cartilage. Nucleotide-binding oligomerization domain-like receptor containing pyrin domain 3 (NLRP3) plays an important role in inflammation. This study aims to investigate whether protective effects of curculigoside on OA are medicated by the regulation of NLRP3 pathway. Destabilization of the medial meniscus (DMM) was performed to build an OA mouse model. After surgery, OA mice were treated with curculigoside. Immunohistochemistry was conducted to evaluate OA cartilage. In addition, human chondrocytes were isolated and treated with curculigoside. The mRNA and protein expression of iNOS, MMP-9, NLRP3 was detected by PCR and Western blot analysis. Curculigoside inhibited mRNA and protein levels of iNOS and MMP-9 induced by DMM surgery in a dose-dependent manner. Furthermore, the expression of NLRP3, NF-κB and PKR was downregulated after curculigoside administration. Moreover, curculigoside reversed the effects of IL-1β on MMP-9, iNOS and type II collagen expression at mRNA and protein levels in human chondrocytes in a dose-dependent manner. In conclusion, curculigoside exhibits beneficial effect on cartilage via the inhibition of NLRP3 pathway.
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Affiliation(s)
- Xufei Wang
- Department of Clinical Laboratory, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan; Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan.
| | - Yinlian Liu
- Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan; Department of Rehabilitation, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan.
| | - Yongnian Zhou
- Department of Clinical Laboratory, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan; Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan.
| | - Yang Zhou
- Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan; Department of General Surgery, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan.
| | - Yueping Li
- Department of Clinical Laboratory, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan; Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan.
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Zhang H, Gao J, Tang Y, Jin T, Tao J. Inflammasomes cross-talk with lymphocytes to connect the innate and adaptive immune response. J Adv Res 2023; 54:181-193. [PMID: 36681114 DOI: 10.1016/j.jare.2023.01.012] [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: 02/26/2022] [Revised: 10/15/2022] [Accepted: 01/13/2023] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND Innate and adaptive immunity are two different parts of the immune system that have different characteristics and work together to provide immune protection. Inflammasomes are a major part of the innate immune system that are expressed widely in myeloid cells and are responsible for inflammatory responses. Recent studies have shown that inflammasomes are also expressed and activated in lymphocytes, especially in T and B cells, to regulate the adaptive immune response. Activation of inflammasomes is also under the control of lymphocytes. Therefore, we propose that inflammasomes act as a bridge and they provide crosstalk between the innate and adaptive immune systems to obtain a fine balance in immune responses. AIM OF REVIEW This review systematially summarizes the interaction between inflammasomes and lymphocytes and describes the crosstalk between the innate and adaptive immune systems induced by inflammasomes, with the aim of providing new directions and important areas for further research. KEY SCIENTIFIC CONCEPTS OF REVIEW When considering the novel function of inflammasomes in various lymphocytes, attention should be given to the activity of specific inflammasomes in studies of lymphocyte function. Moreover, research on the function of various inflammasomes in lymphocytes will help advance knowledge on the mechanisms and treatment of various diseases, including autoimmune diseases and tumors. In addition, when studying inflammatory responses, inflammasomes in both lymphocytes and myeloid cells need to be considered.
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Affiliation(s)
- Hongliang Zhang
- Department of Rheumatology and Immunology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China; College of Medicine and Health, Lishui University, No. 1 Xueyuan Road, Liandu District, Lishui 323000, China
| | - Jie Gao
- Department of Rheumatology and Immunology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Yujie Tang
- Department of Rheumatology and Immunology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Tengchuan Jin
- Laboratory of Structural Immunology, CAS Key Laboratory of Innate Immunity and Chronic Disease, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.
| | - Jinhui Tao
- Department of Rheumatology and Immunology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.
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Fujimura K, Karasawa T, Komada T, Yamada N, Mizushina Y, Baatarjav C, Matsumura T, Otsu K, Takeda N, Mizukami H, Kario K, Takahashi M. NLRP3 inflammasome-driven IL-1β and IL-18 contribute to lipopolysaccharide-induced septic cardiomyopathy. J Mol Cell Cardiol 2023; 180:58-68. [PMID: 37172930 DOI: 10.1016/j.yjmcc.2023.05.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 04/27/2023] [Accepted: 05/10/2023] [Indexed: 05/15/2023]
Abstract
Sepsis is a life-threatening syndrome, and its associated mortality is increased when cardiac dysfunction and damage (septic cardiomyopathy [SCM]) occur. Although inflammation is involved in the pathophysiology of SCM, the mechanism of how inflammation induces SCM in vivo has remained obscure. NLRP3 inflammasome is a critical component of the innate immune system that activates caspase-1 (Casp1) and causes the maturation of IL-1β and IL-18 as well as the processing of gasdermin D (GSDMD). Here, we investigated the role of the NLRP3 inflammasome in a murine model of lipopolysaccharide (LPS)-induced SCM. LPS injection induced cardiac dysfunction, damage, and lethality, which was significantly prevented in NLRP3-/- mice, compared to wild-type (WT) mice. LPS injection upregulated mRNA levels of inflammatory cytokines (Il6, Tnfa, and Ifng) in the heart, liver, and spleen of WT mice, and this upregulation was prevented in NLRP3-/- mice. LPS injection increased plasma levels of inflammatory cytokines (IL-1β, IL-18, and TNF-α) in WT mice, and this increase was markedly inhibited in NLRP3-/- mice. LPS-induced SCM was also prevented in Casp1/11-/- mice, but not in Casp11mt, IL-1β-/-, IL-1α-/-, or GSDMD-/- mice. Notably, LPS-induced SCM was apparently prevented in IL-1β-/- mice transduced with adeno-associated virus vector expressing IL-18 binding protein (IL-18BP). Furthermore, splenectomy, irradiation, or macrophage depletion alleviated LPS-induced SCM. Our findings demonstrate that the cross-regulation of NLRP3 inflammasome-driven IL-1β and IL-18 contributes to the pathophysiology of SCM and provide new insights into the mechanism underlying the pathogenesis of SCM.
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Affiliation(s)
- Kenta Fujimura
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan; Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University, Tochigi, Japan
| | - Tadayoshi Karasawa
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Takanori Komada
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Naoya Yamada
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Yoshiko Mizushina
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Chintogtokh Baatarjav
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Takayoshi Matsumura
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Kinya Otsu
- The School of Cardiovascular Medicine and Sciences, King's College London British Heart Foundation Centre of Excellence, London, United Kingdom; National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Norihiko Takeda
- Division of Cardiology and Metabolism, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Hiroaki Mizukami
- Division of Genetic Therapeutics, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Kazuomi Kario
- Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University, Tochigi, Japan
| | - Masafumi Takahashi
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan.
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Joaquim LS, Danielski LG, Bonfante S, Biehl E, Mathias K, Denicol T, Bagio E, Lanzzarin EV, Machado RS, Bernades GC, Generoso J, Della Giustina A, Barichello T, Petronilho F. NLRP3 inflammasome activation increases brain oxidative stress after transient global cerebral ischemia in rats. Int J Neurosci 2023; 133:375-388. [PMID: 33902404 DOI: 10.1080/00207454.2021.1922402] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 12/17/2020] [Accepted: 01/18/2021] [Indexed: 10/21/2022]
Abstract
Pupurpose of the study: Oxidative stress has been reported to be an important mechanism for brain damage following ischemic stroke. Recently, the involvement of cytosolic receptors capable of forming protein complexes called inflammasomes has been demonstrated to perpetuate oxidative stress. Herein, we report the effect of NLRP3 inhibition with MCC950 on brain oxidative stress in an animal model of transient global cerebral ischemia.Materials and methods: Male Wistar rats received an intracerebroventricularly (icv) injection of MCC950 (140 ng/kg) or saline and were subjected to sham procedure or ischemia/reperfusion (I/R). Twenty-four hours after I/R, myeloperoxidase (MPO) activity, nitrite/nitrate (N/N) concentration, lipid peroxidation, protein carbonyls formation, superoxide dismutase (SOD) and catalase (CAT) activity were determined in the prefrontal cortex, hippocampus, cortex, cerebellum and striatum. Results: After I/R, MPO activity increased in the prefrontal cortex, hippocampus, cortex and cerebellum and N/N concentration elevated in the prefrontal cortex, hippocampus and cortex, while MCC950 decreased this level except in hippocampus. After I/R, lipid peroxidation enhanced in the prefrontal cortex and cerebellum and increased the oxidative protein damage in both structures and hippocampus. MCC950 decreased lipid peroxidation in the prefrontal cortex and decreased protein oxidative damage in all brain structures except in the striatum. SOD activity decreased in the cortex after I/R and MCC950 reestablished these levels. CAT activity decreased in the prefrontal cortex, hippocampus and cerebellum after I/R and MCC950 reestablished these levels in the prefrontal cortex.Conclusion: Our data provide novel demonstration that inhibiting NLRP3 activation with MCC950 reduces brain oxidative damage after cerebral I/R in rats.
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Affiliation(s)
- Larissa Silva Joaquim
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, University of South Santa Catarina, Tubarão, SC, Brazil
| | - Lucinéia Gainski Danielski
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, University of South Santa Catarina, Tubarão, SC, Brazil
| | - Sandra Bonfante
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, University of South Santa Catarina, Tubarão, SC, Brazil
| | - Erica Biehl
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, University of South Santa Catarina, Tubarão, SC, Brazil
| | - Khiany Mathias
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, University of South Santa Catarina, Tubarão, SC, Brazil
| | - Tais Denicol
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, University of South Santa Catarina, Tubarão, SC, Brazil
| | - Erick Bagio
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, University of South Santa Catarina, Tubarão, SC, Brazil
| | - Everton Venicius Lanzzarin
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, University of South Santa Catarina, Tubarão, SC, Brazil
| | - Richard Simon Machado
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, University of South Santa Catarina, Tubarão, SC, Brazil
| | - Gabriela Costa Bernades
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, University of South Santa Catarina, Tubarão, SC, Brazil
| | - Jaqueline Generoso
- Laboratory of Experimental Pathophysiology, Graduate Program in Health Sciences, Health Sciences Unit, University of Southern Santa Catarina, Criciúma, SC, Brazil
| | - Amanda Della Giustina
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, University of South Santa Catarina, Tubarão, SC, Brazil
| | - Tatiana Barichello
- Laboratory of Experimental Pathophysiology, Graduate Program in Health Sciences, Health Sciences Unit, University of Southern Santa Catarina, Criciúma, SC, Brazil
- Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciencies, Mc Govern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - Fabricia Petronilho
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, University of South Santa Catarina, Tubarão, SC, Brazil
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Vichare R, Saleem F, Mansour H, Bojkovic K, Cheng F, Biswal M, Panguluri SK. Impact of age and sex on hyperoxia-induced cardiovascular pathophysiology. Mech Ageing Dev 2022; 208:111727. [PMID: 36075315 DOI: 10.1016/j.mad.2022.111727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 08/17/2022] [Accepted: 08/23/2022] [Indexed: 12/30/2022]
Abstract
Hyperoxia is characterized by pronounced inflammatory responses, pulmonary cell apoptosis, and adverse cardiac remodeling due to an excess supply of oxygen. Hyperoxic episodes are frequent in mechanically ventilated patients and are associated with in-hospital mortality. This study extends the analysis of prior published research by our group as it investigates the influence of age in male and female rodents exposed to hyperoxic conditions. Age is an independent cardiovascular risk factor, often compounded by variables like obesity, diabetes, and a decline in sex hormones and their receptors. This study simulates clinical hyperoxia by subjecting rodents to > 90 % of oxygen for 72 h and compares the changes in cardiac structural and functional parameters with those exposed to normal air. While in both sexes conduction abnormalities with ageing were discernible, aged females owing to their inherent higher baseline QTc, were at a higher risk of developing arrhythmias as compared to age-matched males. Quantitative real-time RT-PCR and western blot analysis reflected altered expression of cardiac potassium channels, resulting in conduction abnormalities in aged female rodents. Unaffected by age and sex, hyperoxia-treated mice had altered body composition, as evidenced by a considerable reduction in body weight. Interestingly, compensatory hypertrophy observed as a protective mechanism in young males was absent in aged males, whereas protection of hearts from hyperoxia-induced cardiac hypertrophy was absent in aged female mice, both of which may be at least in part due to a reduction in sex steroid receptors and the systemic steroid levels. Finally, statistical analysis revealed that hyperoxia had the greatest impact on most of the cardiac parameters, followed by age and then sex. This data established an imperative finding that can change the provision of care for aged individuals admitted to ICU by elucidating the impact of intrinsic aging on hyperoxia-induced cardiac remodeling.
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Affiliation(s)
- Riddhi Vichare
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Faizan Saleem
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Hussein Mansour
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Katarina Bojkovic
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Feng Cheng
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Manas Biswal
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA; College of Medicine Internal Medicine, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Siva Kumar Panguluri
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA; Cell Biology, Microbiology and Molecular Biology, College of Arts and Sciences, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA.
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Receptor for Advanced Glycation End-Products Promotes Activation of Alveolar Macrophages through the NLRP3 Inflammasome/TXNIP Axis in Acute Lung Injury. Int J Mol Sci 2022; 23:ijms231911659. [PMID: 36232959 PMCID: PMC9569658 DOI: 10.3390/ijms231911659] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/26/2022] [Accepted: 09/28/2022] [Indexed: 11/05/2022] Open
Abstract
The roles of thioredoxin-interacting protein (TXNIP) and receptor for advanced glycation end-products (RAGE)-dependent mechanisms of NOD-like receptor family, pyrin domain containing 3 (NLRP3) inflammasome-driven macrophage activation during acute lung injury are underinvestigated. Cultured THP-1 macrophages were treated with a RAGE agonist (S100A12), with or without a RAGE antagonist; cytokine release and intracytoplasmic production of reactive oxygen species (ROS) were assessed in response to small interfering RNA knockdowns of TXNIP and NLRP3. Lung expressions of TXNIP and NLRP3 and alveolar levels of IL-1β and S100A12 were measured in mice after acid-induced lung injury, with or without administration of RAGE inhibitors. Alveolar macrophages from patients with acute respiratory distress syndrome and from mechanically ventilated controls were analyzed using fluorescence-activated cell sorting. In vitro, RAGE promoted cytokine release and ROS production in macrophages and upregulated NLRP3 and TXNIP mRNA expression in response to S100A12. TXNIP inhibition downregulated NLRP3 gene expression and RAGE-mediated release of IL-1β by macrophages in vitro. In vivo, RAGE, NLRP3 and TXNIP lung expressions were upregulated during experimental acute lung injury, a phenomenon being reversed by RAGE inhibition. The numbers of cells expressing RAGE, NLRP3 and TXNIP among a specific subpopulation of CD16+CD14+CD206- (“pro-inflammatory”) alveolar macrophages were higher in patients with lung injury. This study provides a novel proof-of-concept of complex RAGE–TXNIP–NLRP3 interactions during macrophage activation in acute lung injury.
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Yu C, Li T, Li J, Cui B, Liu N, Bayliss G, Zhuang S. Inhibition of polycomb repressive complex 2 by targeting EED protects against cisplatin-induced acute kidney injury. J Cell Mol Med 2022; 26:4061-4075. [PMID: 35734954 PMCID: PMC9279598 DOI: 10.1111/jcmm.17447] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 05/12/2022] [Accepted: 05/20/2022] [Indexed: 12/05/2022] Open
Abstract
Polycomb repressive complex 2 (PRC2) is a multicomponent complex with methyltransferase activity that catalyzes trimethylation of histone H3 at lysine 27 (H3K27me3). Interaction of the epigenetic reader protein EED with EZH2, a catalytic unit of PRC, allosterically stimulates PRC2 activity. In this study, we investigated the role and underlying mechanism of the PRC2 in acute kidney injury (AKI) by using EED226, a highly selective PRC2 inhibitor, to target EED. Administration of EED226 improved renal function, attenuated renal pathological changes, and reduced renal tubular cell apoptosis in a murine model of cisplatin‐induced AKI. In cultured renal epithelial cells, treatment with either EED226 or EED siRNA also ameliorated cisplatin‐induced apoptosis. Mechanistically, EED226 treatment inhibited cisplatin‐induced phosphorylation of p53 and FOXO3a, two transcriptional factors contributing to apoptosis, and preserved expression of Sirtuin 3 and PGC1α, two proteins associated with mitochondrial protection in vivo and in vitro. EED226 was also effective in enhancing renal tubular cell proliferation, suppressing expression of multiple inflammatory cytokines, and reducing infiltration of macrophages to the injured kidney. These data suggest that inhibition of the PRC2 activity by targeting EED can protect against cisplatin‐induced AKI by promoting the survival and proliferation of renal tubular cells and inhibiting inflammatory response.
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Affiliation(s)
- Chao Yu
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Tingting Li
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jialu Li
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Binbin Cui
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Na Liu
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - George Bayliss
- Department of Medicine, Rhode Island Hospital, and Alpert Medical School, Brown University, Providence, Rhode Island, USA
| | - Shougang Zhuang
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.,Department of Medicine, Rhode Island Hospital, and Alpert Medical School, Brown University, Providence, Rhode Island, USA
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9
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Chen L, Wang H, Ge S, Tai S. IL-6/STAT3 pathway is involved in the regulation of autophagy in chronic non-bacterial prostatitis cells, and may be affected by the NLRP3 inflammasome. Ultrastruct Pathol 2021; 45:297-306. [PMID: 34423720 DOI: 10.1080/01913123.2021.1966149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Studies have shown that the cytokine IL-6 plays an important role in the occurrence and development of chronic non-bacterial prostatitis (CNP), but the specific mechanism by which this cytokine regulates CNP is still unclear. At the same time, relevant research have also shown that autophagy is involved in regulating the occurrence and development of inflammation. The possible mechanisms are IL-6/STAT3 signaling pathway and NLRP3 inflammasome. On the basis of establishing the CNP model in rats, we found that IL-6 can regulate autophagy of CNP cells and is associated with the STAT3 pathway and NLRP3 inflammasome. Our results indicate that IL-6 is involved in the regulation of autophagy signaling pathways in CNP. IL-6/STAT3 signaling pathway can suppress cell autophagy pathway in CNP; And the NLRP3 inflammasome may regulate CNP cell autophagy by regulating the IL-6/STAT3 pathway. These findings may provide a new theoretical basis for the pathogenesis of CNP, as well as new ideas and new targets for the treatment and prevention of CNP.
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Affiliation(s)
- Lidong Chen
- Department Of Urology, The First Affiliated Hospital of Anhui Medical University, Institute of Urology, Anhui Medical University and Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, P.R. China
| | - Hui Wang
- Department Of Urology, The First Affiliated Hospital of Anhui Medical University, Institute of Urology, Anhui Medical University and Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, P.R. China
| | - Shengdong Ge
- Department Of Urology, The First Affiliated Hospital of Anhui Medical University, Institute of Urology, Anhui Medical University and Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, P.R. China
| | - Sheng Tai
- Department Of Urology, The First Affiliated Hospital of Anhui Medical University, Institute of Urology, Anhui Medical University and Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, P.R. China
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10
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Hong JY, Kim MN, Kim EG, Lee JW, Kim HR, Kim SY, Lee SM, Kim YH, Kim KW, Sohn MH. Clusterin Deficiency Exacerbates Hyperoxia-Induced Acute Lung Injury. Cells 2021; 10:944. [PMID: 33921872 PMCID: PMC8073575 DOI: 10.3390/cells10040944] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 04/07/2021] [Accepted: 04/16/2021] [Indexed: 02/05/2023] Open
Abstract
Exposure to high oxygen concentrations leads to generation of excessive reactive oxygen species, causing cellular injury and multiple organ dysfunctions and is associated with a high mortality rate. Clusterin (CLU) is a heterodimeric glycoprotein that mediates several intracellular signaling pathways, including cell death and inflammation. However, the role of CLU in the pathogenesis of hyperoxic acute lung injury (HALI) is unknown. Wild-type (WT) and CLU-deficient mice and cultured human airway epithelial cells were used. Changes in cell death- and inflammation-related molecules with or without hyperoxia exposure in cells and animals were determined. Hyperoxia induced an increase in CLU expression in mouse lungs and human airway epithelial cells. Mice lacking CLU had increased HALI and mortality rate compared with WT mice. In vitro, CLU-disrupted cells showed enhanced release of cytochrome c, Bax translocation, cell death and inflammatory cytokine expression. However, treatment with recombinant CLU attenuated hyperoxia-induced apoptosis. Moreover, the Kyoto Encyclopedia of Genes and Genomes and Gene Ontology analyses revealed metabolic pathways, hematopoietic cell lineage, response to stress and localization and regulation of immune system that were differentially regulated between WT and CLU-/- mice. These results demonstrate that prolonged hyperoxia-induced lung injury is associated with CLU expression and that CLU replenishment may alleviate hyperoxia-induced cell death.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Myung Hyun Sohn
- Department of Pediatrics, Severance Hospital, Institute of Allergy, Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine,134 Sinchon-Dong, Seoul 03722, Korea; (J.Y.H.); (M.N.K.); (E.G.K.); (J.W.L.); (H.R.K.); (S.Y.K.); (S.M.L.); (Y.H.K.); (K.W.K.)
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11
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Fu M, Tan L, Lin Z, Lui V, Tam P, Lamb J, Zhang Y, Xia H, Zhang R, Chen Y. Down-regulation of STAT3 enhanced chemokine expression and neutrophil recruitment in biliary atresia. Clin Sci (Lond) 2021; 135:865-884. [PMID: 33769466 PMCID: PMC8035628 DOI: 10.1042/cs20201366] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 03/18/2021] [Accepted: 03/25/2021] [Indexed: 12/13/2022]
Abstract
Biliary atresia (BA) is an immune-related disorder and signal transducer and activator of transcription 3 (STAT3) is a key signalling molecule in inflammation. The present study was designed to clarify the function of STAT3 in BA. STAT3 expression was examined in patients and a mouse BA model in which STAT3 levels were further altered with a specific inhibitor or activator. Neutrophil accumulation and the levels of the neutrophil chemoattractants (C-X-C motif) ligand 1 (CXCL1) and IL-8 were determined. The effects of STAT3 inhibition on IL-8 expression were examined in human biliary epithelial cell (BEC) cultures. Functional changes in liver STAT3+ neutrophils in the mouse model were analysed with 10× single cell RNA-seq methods. Results showed STAT3 and p-STAT3 expression was reduced in BA liver tissue compared with control samples. Administration of a STAT3 inhibitor increased jaundice and mortality and reduced body weight in BA mice. In contrast, the STAT3 activator ameliorated BA symptoms. Extensive neutrophil accumulation together with CXCL1 up-regulation, both of which were suppressed by an anti-CXCL1 antibody, were observed in the STAT3 inhibitor-treated group. Recombinant IL-8 administration increased disease severity in BA mice, and the STAT3 activator had the reverse effect. Inhibiting STAT3 increased apoptosis of human BECs together with up-regulated IL-8 expression. RNA-seq analysis revealed reduced the numbers of STAT3 expressing neutrophil in BA which was accompanied by marked enhanced interferon-related antiviral activities. In conclusion, STAT3 reduction, enhanced IL-8 and CXCL1 expression and promoted the accumulation of interferon-responsive neutrophils resulting in BEC damage in BA.
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Affiliation(s)
- Ming Fu
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, China
- First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Ledong Tan
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Zefeng Lin
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Vincent C.H. Lui
- Department of Surgery, The University of Hong Kong, Hong Kong SAR, China
| | - Paul K.H. Tam
- Department of Surgery, The University of Hong Kong, Hong Kong SAR, China
| | - Jonathan R. Lamb
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London, U.K
| | - Yan Zhang
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Huimin Xia
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Ruizhong Zhang
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Yan Chen
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, China
- Department of Surgery, The University of Hong Kong, Hong Kong SAR, China
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12
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Amarelle L, Quintela L, Hurtado J, Malacrida L. Hyperoxia and Lungs: What We Have Learned From Animal Models. Front Med (Lausanne) 2021; 8:606678. [PMID: 33768102 PMCID: PMC7985075 DOI: 10.3389/fmed.2021.606678] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 02/15/2021] [Indexed: 12/19/2022] Open
Abstract
Although oxygen (O2) is essential for aerobic life, it can also be an important source of cellular damage. Supra-physiological levels of O2 determine toxicity due to exacerbated reactive oxygen species (ROS) production, impairing the homeostatic balance of several cellular processes. Furthermore, injured cells activate inflammation cascades, amplifying the tissue damage. The lung is the first (but not the only) organ affected by this condition. Critically ill patients are often exposed to several insults, such as mechanical ventilation, infections, hypo-perfusion, systemic inflammation, and drug toxicity. In this scenario, it is not easy to dissect the effect of oxygen toxicity. Translational investigations with animal models are essential to explore injuring stimuli in controlled experimental conditions, and are milestones in understanding pathological mechanisms and developing therapeutic strategies. Animal models can resemble what happens in critical care or anesthesia patients under mechanical ventilation and hyperoxia, but are also critical to explore the effect of O2 on lung development and the role of hyperoxic damage on bronchopulmonary dysplasia. Here, we set out to review the hyperoxia effects on lung pathology, contributing to the field by describing and analyzing animal experimentation's main aspects and its implications on human lung diseases.
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Affiliation(s)
- Luciano Amarelle
- Department of Pathophysiology, Hospital de Clínicas, School of Medicine, Universidad de la República, Montevideo, Uruguay
| | - Lucía Quintela
- Department of Pathophysiology, Hospital de Clínicas, School of Medicine, Universidad de la República, Montevideo, Uruguay
| | - Javier Hurtado
- Department of Pathophysiology, Hospital de Clínicas, School of Medicine, Universidad de la República, Montevideo, Uruguay
| | - Leonel Malacrida
- Department of Pathophysiology, Hospital de Clínicas, School of Medicine, Universidad de la República, Montevideo, Uruguay.,Advanced Bioimaging Unit, Institut Pasteur Montevideo and Universidad de la República, Montevideo, Uruguay
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13
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Liu B, He R, Zhang L, Hao B, Jiang W, Wang W, Geng Q. Inflammatory Caspases Drive Pyroptosis in Acute Lung Injury. Front Pharmacol 2021; 12:631256. [PMID: 33613295 PMCID: PMC7892432 DOI: 10.3389/fphar.2021.631256] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 01/06/2021] [Indexed: 12/16/2022] Open
Abstract
Acute lung injury (ALI), a critical respiratory disorder that causes diffuse alveolar injury leads to high mortality rates with no effective treatment. ALI is characterized by varying degrees of ventilation/perfusion mismatch, severe hypoxemia, and poor pulmonary compliance. The diffuse injury to cells is one of most important pathological characteristics of ALI. Pyroptosis is a form of programmed cell death distinguished from apoptosis induced by inflammatory caspases, which can release inflammatory cytokines to clear cells infected by pathogens and promote monocytes to reassemble at the site of injury. And pyroptosis not only promotes inflammation in certain cell types, but also regulates many downstream pathways to perform different functions. There is increasing evidence that pyroptosis and its related inflammatory caspases play an important role in the development of acute lung injury. The main modes of activation of pyroptosis is not consistent among different types of cells in lung tissue. Meanwhile, inhibition of inflammasome, the key to initiating pyroptosis is currently the main way to treat acute lung injury. The review summarizes the relationship among inflammatory caspases, pyroptosis and acute lung injury and provides general directions and strategies to conduct further research.
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Affiliation(s)
- Bohao Liu
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Ruyuan He
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Lin Zhang
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Bo Hao
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Wenyang Jiang
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Wei Wang
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Qing Geng
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
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14
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Takahashi M. NLRP3 inflammasome as a key driver of vascular disease. Cardiovasc Res 2021; 118:372-385. [PMID: 33483732 DOI: 10.1093/cvr/cvab010] [Citation(s) in RCA: 84] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 11/12/2020] [Accepted: 01/16/2021] [Indexed: 12/12/2022] Open
Abstract
NLRP3 (nucleotide-binding oligomerization domain-like receptor family pyrin domain containing 3) is an intracellular innate immune receptor that recognizes a diverse range of stimuli derived from pathogens, damaged or dead cells, and irritants. NLRP3 activation causes the assembly of a large multiprotein complex termed the NLRP3 inflammasome, and leads to the secretion of bioactive interleukin (IL)-1β and IL-18 as well as the induction of inflammatory cell death termed pyroptosis. Accumulating evidence indicates that NLRP3 inflammasome plays a key role in the pathogenesis of sterile inflammatory diseases, including atherosclerosis and other vascular diseases. Indeed, the results of the Canakinumab Anti-inflammatory Thrombosis Outcome Study (CANTOS) trial demonstrated that IL-1β-mediated inflammation plays an important role in atherothrombotic events and suggested that NLRP3 inflammasome is a key driver of atherosclerosis. In this review, we will summarize the current state of knowledge regarding the role of NLRP3 inflammasome in vascular diseases, in particular in atherosclerosis, vascular injury, aortic aneurysm, and Kawasaki disease vasculitis, and discuss NLRP3 inflammasome as a therapeutic target for these disorders.
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Affiliation(s)
- Masafumi Takahashi
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
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15
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He DK, Xu N, Shao YR, Shen J. NLRP3 gene silencing ameliorates phosgene-induced acute lung injury in rats by inhibiting NLRP3 inflammasome and proinflammatory factors, but not anti-inflammatory factors. J Toxicol Sci 2020; 45:625-637. [PMID: 33012731 DOI: 10.2131/jts.45.625] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
NOD-like receptor protein 3 (NLRP3) is involved in acute lung injury (ALI), but its exact role in phosgene-induced ALI is not clearly understood. The aim of the study is to explore the potential therapeutic effect of NLRP3 inflammasome modulation in the management of phosgene-induced ALI. ALI was induced in rats by phosgene exposure at 8.33 g/m3 for 5 min, 30 hr before intravenous injection of adenovirus-NLRP3 shRNA (Ad/NLRP3-shRNA). The histological changes in the lung were evaluated. Bronchoalveolar lavage fluid (BALF) neutrophils were counted (smear), and protein content was measured using the BCA assay. The wet/dry ratio of lung tissue (W/D) was measured. TUNEL staining for DNA damage was used to indirectly assess pyroptosis. NLRP3 inflammasome was assessed by immunohistochemistry, RT-PCR, western blotting. Cytokines were measured by ELISA. Histological analyses revealed reduced severity in phosgene-induced ALI with Ad/NLRP3-shRNA pretreatment. TUNEL staining indicated decreased pyroptosis in Psg-Ad/NLRP3-shRNA rats. Decreased mRNA and protein levels of NLRP3 and caspase-1 (all P < 0.05), but not ASC (P > 0.05), were found in Psg-Ad/NLRP3-shRNA rats. Immunohistochemistry revealed that Ad/NLRP3-shRNA pretreatment inhibited NLRP3 inflammasome activation. Reduced level of pro-inflammatory interleukin (IL)-1β, IL-18, IL-33, and tumor necrosis factor (TNF)-α (all P < 0.05), but not of anti-inflammatory IL-4 and IL-10 (all P > 0.05), were found in serum and BALF from Ad/NLRP3-shRNA rats. NLRP3 gene silencing exerts beneficial effects on phosgene-induced lung injury by inhibiting NLRP3 inflammasome activation and pro-inflammatory factors, but not anti-inflammatory factors. Disruption of NLRP3 inflammasome activation might be used as a therapeutic modality for the treatment of phosgene-induced ALI.
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Affiliation(s)
- Dai-Kun He
- Center of Emergency & Intensive Care Unit, Medical Center of Chemical Injury and Medical Research Centre for Chemical Injury, Emergency and Critical Care, Jinshan Hospital, Fudan University, China
| | - Ning Xu
- Center of Emergency & Intensive Care Unit, Medical Center of Chemical Injury and Medical Research Centre for Chemical Injury, Emergency and Critical Care, Jinshan Hospital, Fudan University, China
| | - Yi-Ru Shao
- Center of Emergency & Intensive Care Unit, Medical Center of Chemical Injury and Medical Research Centre for Chemical Injury, Emergency and Critical Care, Jinshan Hospital, Fudan University, China
| | - Jie Shen
- Center of Emergency & Intensive Care Unit, Medical Center of Chemical Injury and Medical Research Centre for Chemical Injury, Emergency and Critical Care, Jinshan Hospital, Fudan University, China
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16
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Zaman R, Hamidzada H, Epelman S. Exploring cardiac macrophage heterogeneity in the healthy and diseased myocardium. Curr Opin Immunol 2020; 68:54-63. [PMID: 33128959 DOI: 10.1016/j.coi.2020.09.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 09/15/2020] [Accepted: 09/17/2020] [Indexed: 12/24/2022]
Abstract
Cardiac macrophages maintain homeostasis and orchestrate response to disease. Utilization of genetic fate-mapping and single-cell RNA sequencing shifted the paradigm of macrophage heterogeneity from the canonical M1/M2 classification in favour of a nuanced approach that reconciles divergent origins, lifecycles, and transcriptional states. Here, we provide a conceptual framework to assess cardiac macrophage complexity that integrates transcriptional and functional heterogeneity that tracks with subset-specific markers (TIMD4 and CCR2). Our goal is to provide a starting point for researchers to dissect the functions of known resident cardiac macrophage subpopulations. We discuss recent advances and limitations in our understanding of cardiac macrophage diversity in ischemic injury, hypertension and myocarditis.
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Affiliation(s)
- Rysa Zaman
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada; Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto, Toronto, ON, Canada; Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - Homaira Hamidzada
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada; Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto, Toronto, ON, Canada; Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - Slava Epelman
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada; Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto, Toronto, ON, Canada; Department of Immunology, University of Toronto, Toronto, ON, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada; Peter Munk Cardiac Centre, Toronto General Hospital, Toronto, ON, Canada.
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17
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Watanabe S, Usui-Kawanishi F, Komada T, Karasawa T, Kamata R, Yamada N, Kimura H, Dezaki K, Ohmori T, Takahashi M. ASC regulates platelet activation and contributes to thrombus formation independent of NLRP3 inflammasome. Biochem Biophys Res Commun 2020; 531:125-132. [PMID: 32782151 DOI: 10.1016/j.bbrc.2020.07.063] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 07/11/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND Platelets are critical mediators of vascular homeostasis and thrombosis, and also contribute to the development of inflammation. NLRP3 inflammasome is a cytosolic multi-protein complex that consists of NLRP3, ASC and caspase-1, and regulates IL-1β-mediated inflammation. METHOD AND RESULTS Using two mouse models of thrombosis (i.e., occlusion of the middle cerebral artery and inferior vena cava), we found that thrombus formation was significantly enhanced in ASC-deficient (ASC-/-) mice, compared to that in wild-type (WT) and IL-1β-/- mice. ASC deficiency had no effects on blood coagulation parameters (i.e., prothrombin time [PT] and activated partial thromboplastin time [APTT]). Platelets from WT mice express ASC, but neither NLRP3 nor caspase-1. ASC deficiency significantly enhanced the expression of P-selectin and GPIIb/IIIa in response to a GPVI agonist (collagen-related peptide [CRP]), but not to thrombin, in platelets. CRP induced ASC speck formation in WT platelets. ASC deficiency also enhanced cytosolic Ca2+ elevation and phosphorylation of ERK1/2 and Akt in platelets. CONCLUSION Our results demonstrate that ASC negatively regulates GPVI signaling in platelets and enhances thrombus formation, independent of NLRP3 inflammasome and IL-1β, and provide novel insights into the link between inflammation and thrombosis.
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Affiliation(s)
- Sachiko Watanabe
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Fumitake Usui-Kawanishi
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan; Department of Pharmaceutical Engineering, Toyama Prefectural University, Toyama, Japan
| | - Takanori Komada
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Tadayoshi Karasawa
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Ryo Kamata
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Naoya Yamada
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Hiroaki Kimura
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Katsuya Dezaki
- Department of Physiology, Jichi Medical University, Tochigi, Japan
| | - Tsukasa Ohmori
- Department of Biochemistry, Jichi Medical University, Tochigi, Japan
| | - Masafumi Takahashi
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan.
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18
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Ito H, Kimura H, Karasawa T, Hisata S, Sadatomo A, Inoue Y, Yamada N, Aizawa E, Hishida E, Kamata R, Komada T, Watanabe S, Kasahara T, Suzuki T, Horie H, Kitayama J, Sata N, Yamaji-Kegan K, Takahashi M. NLRP3 Inflammasome Activation in Lung Vascular Endothelial Cells Contributes to Intestinal Ischemia/Reperfusion-Induced Acute Lung Injury. THE JOURNAL OF IMMUNOLOGY 2020; 205:1393-1405. [PMID: 32727891 DOI: 10.4049/jimmunol.2000217] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 07/06/2020] [Indexed: 12/19/2022]
Abstract
Intestinal ischemia/reperfusion (I/R) injury is a life-threatening complication that leads to inflammation and remote organ damage. The NLRP3 inflammasome regulates the caspase-1-dependent release of IL-1β, an early mediator of inflammation after I/R injury. In this study, we investigated the role of the NLRP3 inflammasome in mice with intestinal I/R injury. Deficiency of NLRP3, ASC, caspase-1/11, or IL-1β prolonged survival after intestinal I/R injury, but neither NLRP3 nor caspase-1/11 deficiency affected intestinal inflammation. Intestinal I/R injury caused acute lung injury (ALI) characterized by inflammation, reactive oxygen species generation, and vascular permeability, which was markedly improved by NLRP3 deficiency. Bone marrow chimeric experiments showed that NLRP3 in non-bone marrow-derived cells was the main contributor to development of intestinal I/R-induced ALI. The NLRP3 inflammasome in lung vascular endothelial cells is thought to be important to lung vascular permeability. Using mass spectrometry, we identified intestinal I/R-derived lipid mediators that enhanced NLRP3 inflammasome activation in lung vascular endothelial cells. Finally, we confirmed that serum levels of these lipid mediators were elevated in patients with intestinal ischemia. To our knowledge, these findings provide new insights into the mechanism underlying intestinal I/R-induced ALI and suggest that endothelial NLRP3 inflammasome-driven IL-1β is a novel potential target for treating and preventing this disorder.
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Affiliation(s)
- Homare Ito
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi 329-0498, Japan.,Department of Surgery, Jichi Medical University, Tochigi 329-0498, Japan
| | - Hiroaki Kimura
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi 329-0498, Japan
| | - Tadayoshi Karasawa
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi 329-0498, Japan
| | - Shu Hisata
- Division of Pulmonary Medicine, Department of Medicine, Jichi Medical University, Tochigi 329-0498, Japan; and
| | - Ai Sadatomo
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi 329-0498, Japan.,Department of Surgery, Jichi Medical University, Tochigi 329-0498, Japan
| | - Yoshiyuki Inoue
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi 329-0498, Japan.,Department of Surgery, Jichi Medical University, Tochigi 329-0498, Japan
| | - Naoya Yamada
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi 329-0498, Japan
| | - Emi Aizawa
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi 329-0498, Japan
| | - Erika Hishida
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi 329-0498, Japan
| | - Ryo Kamata
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi 329-0498, Japan
| | - Takanori Komada
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi 329-0498, Japan
| | - Sachiko Watanabe
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi 329-0498, Japan
| | - Tadashi Kasahara
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi 329-0498, Japan
| | - Takuji Suzuki
- Division of Pulmonary Medicine, Department of Medicine, Jichi Medical University, Tochigi 329-0498, Japan; and
| | - Hisanaga Horie
- Department of Surgery, Jichi Medical University, Tochigi 329-0498, Japan
| | - Joji Kitayama
- Department of Surgery, Jichi Medical University, Tochigi 329-0498, Japan
| | - Naohiro Sata
- Department of Surgery, Jichi Medical University, Tochigi 329-0498, Japan
| | - Kazuyo Yamaji-Kegan
- Department of Anesthesiology, University of Maryland School of Medicine, Baltimore, MD 21201
| | - Masafumi Takahashi
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi 329-0498, Japan;
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19
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Abstract
The NLRP3 inflammasome may contribute to infarct development during acute cardiac ischemia-reperfusion (IR). Because infarct size strongly correlates with the degree of heart failure in the long term, therapies that reduce reperfusion injury are still needed as first primary care against heart failure development. Inhibition of the NLRP3 inflammasome is currently viewed as such a potential therapy. However, previous research studies directed at inhibition of various inflammatory pathways in acute cardiac IR injury were often disappointing. This is because inflammation is a double-edged sword, detrimental when hyperactive, but beneficial at lower activity, with activity critically dependent on time of reperfusion and cellular location. Moreover, several inflammatory mediators can also mediate cardioprotective signaling. It is reasonable that this also applies to the NLRP3 inflammasome, although current literature has mainly focused on its detrimental effects in the context of acute cardiac IR. Therefore, in this review, we focus on beneficial, cardioprotective properties of the NLRP3 inflammasome and its components NLRP3, ASC, and caspase-1. The results show that (1) NLRP3 deficiency prevents cardioprotection in isolated heart by ischemic preconditioning and in vivo heart by TLR2 activation, associated with impaired STAT3 or Akt signaling, respectively; (2) ASC deficiency also prevents in vivo TLR2-mediated protection; and (3) caspase-1 inhibition results in decreased infarction but impaired protection through the Akt pathway during mild ischemic insults. In conclusion, the NLRP3 inflammasome is not only detrimental, it can also be involved in cardioprotective signaling, thus fueling the future challenge to acquire a full understanding of NLRP3 inflammasome role in cardiac IR before embarking on clinical trials using NLRP3 inhibitors.
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20
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Chen S, Wu Q, Zhong D, Li C, Du L. Caffeine prevents hyperoxia-induced lung injury in neonatal mice through NLRP3 inflammasome and NF-κB pathway. Respir Res 2020; 21:140. [PMID: 32513156 PMCID: PMC7278162 DOI: 10.1186/s12931-020-01403-2] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 05/21/2020] [Indexed: 02/01/2023] Open
Abstract
Background Bronchopulmonary dysplasia (BPD) is a common chronic lung disease in premature infants and hyperoxia exposure is a major cause. In hyperoxic lung injury animal model, alveolar simplification and pro-inflammatory cells infiltration are the main pathophysiologic changes. Caffeine is a drug used to treat apnea in premature infants. Early use of caffeine can decrease the rate and the severity of BPD while the mechanisms are still unclear. The purpose of this study was to evaluate the effects of caffeine on inflammation and lung development in neonatal mice with hyperoxic lung injury and to explore the possible mechanism. Methods Following 14 d of 75% oxygen exposure in newborn mouse, the BPD model was established. Caffeine at a dose of 1 g/L was added in drinking water to nursing mouse. We measured the concentration of caffeine in serum and oxidative stress in lung by commercially available kits. Adenosine 2A receptor (A2AR) expression and lung inflammation were measured by Immunohistochemistry and western blotting. Apoptosis and surfactant protein-C (SFTPC) levels were measured by immunofluorescence. The inflammasome and NF-κB pathway proteins were assessed by western blotting. Results We found that the caffeine concentration in plasma at present dose significantly decreased the expression of A2AR protein in mice lung. Caffeine treatment significantly reduced oxidative stress, improved weight gain, promoted alveolar development, attenuated inflammatory infiltration and lung injury in hyperoxia-induced lung injury mice. Moreover, caffeine decreased the cell apoptosis in lung tissues, especially the Type II alveolar epithelial cell. The expression of NLRP3 inflammasome protein and NF-κB pathway were significantly inhibited by caffeine treatment. Conclusion Caffeine treatment can protect hyperoxia-induced mice lung from oxidative injury by inhibiting NLRP3 inflammasome and NF-κB pathway.
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Affiliation(s)
- Shangqin Chen
- Department of Pediatrics, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Zhejiang, Hangzhou, China.,Department of Neonatology, The Second Affiliated Hospital & Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Qiuping Wu
- Department of Pediatrics, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Zhejiang, Hangzhou, China.,Department of Pediatric Pulmonology, The Second Affiliated Hospital & Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Dingjuan Zhong
- Molecular Center for Ophthalmic Optics, Hunan Provincial People's Hospital, Changsha, China.,Neuropharmacology Laboratory, School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Changchong Li
- Department of Pediatric Pulmonology, The Second Affiliated Hospital & Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Lizhong Du
- Department of Pediatrics, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Zhejiang, Hangzhou, China. .,Department of Neonatology, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, No.3333 Binsheng Road, Hangzhou, 310052, Zhejiang, China.
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21
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Silibinin and SARS-CoV-2: Dual Targeting of Host Cytokine Storm and Virus Replication Machinery for Clinical Management of COVID-19 Patients. J Clin Med 2020; 9:jcm9061770. [PMID: 32517353 PMCID: PMC7356916 DOI: 10.3390/jcm9061770] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 05/25/2020] [Accepted: 06/05/2020] [Indexed: 01/08/2023] Open
Abstract
COVID-19, the illness caused by infection with the novel coronavirus SARS-CoV-2, is a rapidly spreading global pandemic in urgent need of effective treatments. Here we present a comprehensive examination of the host- and virus-targeted functions of the flavonolignan silibinin, a potential drug candidate against COVID-19/SARS-CoV-2. As a direct inhibitor of STAT3—a master checkpoint regulator of inflammatory cytokine signaling and immune response—silibinin might be expected to phenotypically integrate the mechanisms of action of IL-6-targeted monoclonal antibodies and pan-JAK1/2 inhibitors to limit the cytokine storm and T-cell lymphopenia in the clinical setting of severe COVID-19. As a computationally predicted, remdesivir-like inhibitor of RNA-dependent RNA polymerase (RdRp)—the central component of the replication/transcription machinery of SARS-CoV-2—silibinin is expected to reduce viral load and impede delayed interferon responses. The dual ability of silibinin to target both the host cytokine storm and the virus replication machinery provides a strong rationale for the clinical testing of silibinin against the COVID-19 global public health emergency. A randomized, open-label, phase II multicentric clinical trial (SIL-COVID19) will evaluate the therapeutic efficacy of silibinin in the prevention of acute respiratory distress syndrome in moderate-to-severe COVID-19-positive onco-hematological patients at the Catalan Institute of Oncology in Catalonia, Spain.
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22
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Ito H, Sadatomo A, Inoue Y, Yamada N, Aizawa E, Hishida E, Kamata R, Karasawa T, Kimura H, Watanabe S, Komada T, Horie H, Kitayama J, Sata N, Takahashi M. Role of TLR5 in inflammation and tissue damage after intestinal ischemia-reperfusion injury. Biochem Biophys Res Commun 2019; 519:15-22. [PMID: 31472954 DOI: 10.1016/j.bbrc.2019.08.083] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 08/14/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND Intestinal ischemia/reperfusion (I/R) injury is a life-threatening complication that leads to inflammation and remote organ damage. However, the underlying mechanism is not yet fully understood. Toll-like receptor 5 (TLR5) is highly expressed in mucosa and recognizes flagellin, the main component of the bacterial flagella. Here, we investigated the role of TLR5 in inflammation and tissue damage after intestinal I/R injury using TLR5-deficient mice. METHODS AND RESULTS Intestinal levels of TLR5 mRNA and flagellin protein were elevated in wild-type mice subjected to intestinal I/R. Although TLR5 deficiency had no effect on intestinal flagellin levels, it significantly attenuated intestinal injury and inflammatory responses after intestinal I/R. TLR5 deficiency also markedly improved survival in mice after intestinal I/R injury. In wild-type mice, intestinal I/R injury induced remote organ damage, particularly in the lung, which was attenuated by TLR5 deficiency. Furthermore, TLR5 deficiency prevented lung inflammatory responses and vascular permeability after intestinal I/R injury. CONCLUSION These findings demonstrate a novel role of TLR5 and provide new insights into the mechanism underlying inflammation and tissue damage after intestinal I/R injury.
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Affiliation(s)
- Homare Ito
- Division of Inflammation Research, Center for Molecular Medicine, General and Transplant Surgery, Jichi Medical University, Tochigi, Japan; Department of Surgery, Division of Gastroenterological, General and Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Ai Sadatomo
- Division of Inflammation Research, Center for Molecular Medicine, General and Transplant Surgery, Jichi Medical University, Tochigi, Japan; Department of Surgery, Division of Gastroenterological, General and Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Yoshiyuki Inoue
- Division of Inflammation Research, Center for Molecular Medicine, General and Transplant Surgery, Jichi Medical University, Tochigi, Japan; Department of Surgery, Division of Gastroenterological, General and Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Naoya Yamada
- Division of Inflammation Research, Center for Molecular Medicine, General and Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Emi Aizawa
- Division of Inflammation Research, Center for Molecular Medicine, General and Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Erika Hishida
- Division of Inflammation Research, Center for Molecular Medicine, General and Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Ryo Kamata
- Division of Inflammation Research, Center for Molecular Medicine, General and Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Tadayoshi Karasawa
- Division of Inflammation Research, Center for Molecular Medicine, General and Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Hiroaki Kimura
- Division of Inflammation Research, Center for Molecular Medicine, General and Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Sachiko Watanabe
- Division of Inflammation Research, Center for Molecular Medicine, General and Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Takanori Komada
- Division of Inflammation Research, Center for Molecular Medicine, General and Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Hisanaga Horie
- Department of Surgery, Division of Gastroenterological, General and Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Joji Kitayama
- Department of Surgery, Division of Gastroenterological, General and Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Naohiro Sata
- Department of Surgery, Division of Gastroenterological, General and Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Masafumi Takahashi
- Division of Inflammation Research, Center for Molecular Medicine, General and Transplant Surgery, Jichi Medical University, Tochigi, Japan.
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23
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Xu P, Zhang X, Liu Q, Xie Y, Shi X, Chen J, Li Y, Guo H, Sun R, Hong Y, Liu X, Xu G. Microglial TREM-1 receptor mediates neuroinflammatory injury via interaction with SYK in experimental ischemic stroke. Cell Death Dis 2019; 10:555. [PMID: 31324751 PMCID: PMC6642102 DOI: 10.1038/s41419-019-1777-9] [Citation(s) in RCA: 142] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 05/29/2019] [Accepted: 06/24/2019] [Indexed: 12/31/2022]
Abstract
Neuroinflammation is initiated in response to ischemic stroke, generally with the hallmarks of microglial activation and collateral brain injury contributed by robust inflammatory effects. Triggering receptor expressed on myeloid cells (TREM)-1, an amplifier of the innate immune response, is a critical regulator of inflammation. This study identified that microglial TREM-1 expression was upregulated following cerebral ischemic injury. After pharmacologic inhibition of TREM-1 with synthetic peptide LP17, ischemia-induced infarction and neuronal injury were substantially alleviated. Moreover, blockade of TREM-1 can potentiate cellular proliferation and synaptic plasticity in hippocampus, resulting in long-term functional improvement. Microglial M1 polarization and neutrophil recruitment were remarkably abrogated as mRNA levels of M1 markers, chemokines, and protein levels of myeloperoxidase and intracellular adhesion molecule-1 (ICAM-1) were decreased by LP17. Mechanistically, both in vivo and in vitro, we delineated that TREM-1 can activate downstream pro-inflammatory pathways, CARD9/NF-κB, and NLRP3/caspase-1, through interacting with spleen tyrosine kinase (SYK). In addition, TREM-1-induced SYK initiation was responsible for microglial pyroptosis by elevating levels of gasdermin D (GSDMD), N-terminal fragment of GSDMD (GSDMD-N), and forming GSDMD pores, which can facilitate the release of intracellular inflammatory factors, in microglia. In summary, microglial TREM-1 receptor yielded post-stroke neuroinflammatory damage via associating with SYK.
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Affiliation(s)
- Pengfei Xu
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China.,Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230001, Anhui, China
| | - Xiaohao Zhang
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China.,Department of Neurology, Jiangsu Provincial Second Chinese Medicine Hospital, The Second Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210002, Jiangsu, China
| | - Qian Liu
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Yi Xie
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Xiaolei Shi
- Department of Neurology, Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu, 241001, Anhui, China
| | - Jingjing Chen
- Department of Neurology, Jinling Clinical College of Nanjing Medical University, Nanjing, 210002, Jiangsu, China
| | - Yunzi Li
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Hongquan Guo
- Department of Neurology, Jinling Hospital, Southern Medical University, Nanjing, 210002, Jiangsu, China
| | - Rui Sun
- Department of Neurology, Jinling Clinical College of Nanjing Medical University, Nanjing, 210002, Jiangsu, China
| | - Ye Hong
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Xinfeng Liu
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China.
| | - Gelin Xu
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China.
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24
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Mizushina Y, Karasawa T, Aizawa K, Kimura H, Watanabe S, Kamata R, Komada T, Mato N, Kasahara T, Koyama S, Bando M, Hagiwara K, Takahashi M. Inflammasome-Independent and Atypical Processing of IL-1β Contributes to Acid Aspiration–Induced Acute Lung Injury. THE JOURNAL OF IMMUNOLOGY 2019; 203:236-246. [DOI: 10.4049/jimmunol.1900168] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 04/17/2019] [Indexed: 12/22/2022]
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25
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Immanuel CN, Teng B, Dong B, Gordon EM, Kennedy JA, Luellen C, Schwingshackl A, Cormier SA, Fitzpatrick EA, Waters CM. Apoptosis signal-regulating kinase-1 promotes inflammasome priming in macrophages. Am J Physiol Lung Cell Mol Physiol 2019; 316:L418-L427. [PMID: 30628485 DOI: 10.1152/ajplung.00199.2018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
We previously showed that mice deficient in apoptosis signal-regulating kinase-1 (ASK1) were partially protected against ventilator-induced lung injury. Because ASK1 can promote both cell death and inflammation, we hypothesized that ASK1 activation regulates inflammasome-mediated inflammation. Mice deficient in ASK1 expression (ASK1-/-) exhibited significantly less inflammation and lung injury (as measured by neutrophil infiltration, IL-6, and IL-1β) in response to treatment with inhaled lipopolysaccharide (LPS) compared with wild-type (WT) mice. To determine whether this proinflammatory response was mediated by ASK1, we investigated inflammasome-mediated responses to LPS in primary macrophages and bone marrow-derived macrophages (BMDMs) from WT and ASK1-/- mice, as well as the mouse alveolar macrophage cell line MH-S. Cells were treated with LPS alone for priming or LPS followed by ATP for activation. When macrophages were stimulated with LPS followed by ATP to activate the inflammasome, we found a significant increase in secreted IL-1β from WT cells compared with ASK1-deficient cells. LPS priming stimulated an increase in NOD-like receptor 3 (NLRP3) and pro-IL-1β in WT BMDMs, but expression of NLRP3 was significantly decreased in ASK1-/- BMDMs. Subsequent ATP treatment stimulated an increase in cleaved caspase-1 and IL-1β in WT BMDMs compared with ASK1-/- BMDMs. Similarly, treatment of MH-S cells with LPS + ATP caused an increase in both cleaved caspase-1 and IL-1β that was diminished by the ASK-1 inhibitor NQDI1. These results demonstrate, for the first time, that ASK1 promotes inflammasome priming.
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Affiliation(s)
- Camille N Immanuel
- Division of Pediatric Critical Care, Department of Pediatrics, Children's Foundation Research Institute at Le Bonheur Children's Hospital, University of Tennessee Health Sciences , Memphis, Tennessee.,Department of Physiology, University of Kentucky , Lexington, Kentucky
| | - Bin Teng
- Department of Physiology, University of Tennessee Health Science Center , Memphis, Tennessee
| | - Brittany Dong
- Department of Physiology, University of Kentucky , Lexington, Kentucky
| | | | - Joseph A Kennedy
- Department of Physiology, University of Tennessee Health Science Center , Memphis, Tennessee
| | - Charlean Luellen
- Department of Physiology, University of Tennessee Health Science Center , Memphis, Tennessee
| | - Andreas Schwingshackl
- Department of Pediatrics, Mattel Children's Hospital at the University of California , Los Angeles, California
| | - Stephania A Cormier
- Department of Biological Sciences, Louisiana State University , Baton Rouge, Louisiana
| | - Elizabeth A Fitzpatrick
- Department of Microbiology, Immunology, and Biochemistry, University of Tennessee Health Science Center , Memphis, Tennessee
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26
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Yin XF, Zhang Q, Chen ZY, Wang HF, Li X, Wang HX, Li HX, Kang CM, Chu S, Li KF, Li Y, Qiu YR. NLRP3 in human glioma is correlated with increased WHO grade, and regulates cellular proliferation, apoptosis and metastasis via epithelial-mesenchymal transition and the PTEN/AKT signaling pathway. Int J Oncol 2018; 53:973-986. [PMID: 30015880 PMCID: PMC6065456 DOI: 10.3892/ijo.2018.4480] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 06/08/2018] [Indexed: 02/07/2023] Open
Abstract
Glioma is the most prevalent and fatal primary tumor of the central nervous system in adults, while the development of effective therapeutic strategies in clinical practice remain a challenge. Nucleotide-binding domain leucine-rich family pyrin-containing 3 (NLRP3) has been reported to be associated with tumorigenesis and progression; however, its expression and function in human glioma remain unclear. The present study was designed to explore the biological role and potential mechanism of NLRP3 in human glioma. The results demonstrated that overexpression of NLRP3, apoptosis-associated speck-like protein containing a caspase-recruitment domain (ASC), caspase-1 and interleukin (IL)-1β protein in human glioma tissues were significantly correlated with higher World Health Organization grades. The in vitro biological experiments demonstrated that NLRP3 downregulation significantly inhibited the proliferation, migration and invasion, and promoted the apoptosis of SHG44 and A172 glioma cell lines. Furthermore, western blot assays revealed that the downregulation of NLRP3 significantly reduced the expression of ASC, caspase-1 and IL-1β protein. Furthermore, NLRP3 knockdown caused the inhibition of epithelial-mesenchymal transition (EMT), and inhibited the phosphorylation of AKT serine/threonine kinase (AKT) and phosphorylation of phosphatase and tensin homolog (PTEN). Consistently, the upregulation of NLRP3 significantly increased the expression of ASC, caspase-1, IL-1β and phosphorylated-PTEN, promoted proliferation, migration, invasion and EMT, inhibited apoptosis, and activated the AKT signaling pathway. The data of the present study indicate that NLRP3 affects human glioma progression and metastasis through multiple pathways, including EMT and PTEN/AKT signaling pathway regulation, enhanced inflammasome activation, and undefined inflammasome-independent mechanisms. Understanding the biological effects of NLRP3 in human glioma and the underlying mechanisms may offer novel insights for the development of glioma clinical therapeutic strategies.
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Affiliation(s)
- Xiao-Feng Yin
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Qiong Zhang
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Zhuo-Yu Chen
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Hai-Fang Wang
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Xin Li
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Hong-Xia Wang
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Hai-Xia Li
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Chun-Min Kang
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Shuai Chu
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Kai-Fei Li
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Yao Li
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Yu-Rong Qiu
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
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27
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RNA sequencing data from neutrophils of patients with cystic fibrosis reveals potential for developing biomarkers for pulmonary exacerbations. J Cyst Fibros 2018; 18:194-202. [PMID: 29941318 DOI: 10.1016/j.jcf.2018.05.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 05/01/2018] [Accepted: 05/22/2018] [Indexed: 01/16/2023]
Abstract
BACKGROUND There is no effective way to predict cystic fibrosis (CF) pulmonary exacerbations (CFPE) before they become symptomatic or to assess satisfactory treatment responses. METHODS RNA sequencing of peripheral blood neutrophils from CF patients before and after therapy for CFPE was used to create transcriptome profiles. Transcripts with an average transcripts per million (TPM) level > 1.0 and a false discovery rate (FDR) < 0.05 were used in a cosine K-nearest neighbor (KNN) model. Real time PCR was used to corroborate RNA sequencing expression differences in both neutrophils and whole blood samples from an independent cohort of CF patients. Furthermore, sandwich ELISA was conducted to assess plasma levels of MRP8/14 complexes in CF patients before and after therapy. RESULTS We found differential expression of 136 transcripts and 83 isoforms when we compared neutrophils from CF patients before and after therapy (>1.5 fold change, FDR-adjusted P < 0.05). The model was able to successfully separate CF flare samples from those taken from the same patients in convalescence with an accuracy of 0.75 in both the training and testing cohorts. Six differently expressed genes were confirmed by real time PCR using both isolated neutrophils and whole blood from an independent cohort of CF patients before and after therapy, even though levels of myeloid related protein MRP8/14 dimers in plasma of CF patients were essentially unchanged by therapy. CONCLUSIONS Our findings demonstrate the potential of machine learning approaches for classifying disease states and thus developing sensitive biomarkers that can be used to monitor pulmonary disease activity in CF.
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28
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Walenta L, Schmid N, Schwarzer JU, Köhn FM, Urbanski HF, Behr R, Strauss L, Poutanen M, Mayerhofer A. NLRP3 in somatic non-immune cells of rodent and primate testes. Reproduction 2018; 156:231-238. [PMID: 29907661 DOI: 10.1530/rep-18-0111] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 06/15/2018] [Indexed: 12/11/2022]
Abstract
NLRP3 is part of the NLRP3 inflammasome and a global sensor of cellular damage. It was recently discovered in rodent Sertoli cells. We investigated NLRP3 in mouse, human and non-human primate (marmoset and rhesus macaque) testes, employing immunohistochemistry. Sertoli cells of all species expressed NLRP3, and the expression preceded puberty. In addition, peritubular cells of the adult human testes expressed NLRP3. NLRP3 and associated genes (PYCARD, CASP1, IL1B) were also found in isolated human testicular peritubular cells and the mouse Sertoli cell line TM4. Male infertility due to impairments of spermatogenesis may be related to sterile inflammatory events. We observed that the expression of NLRP3 was altered in the testes of patients suffering from mixed atrophy syndrome, in which tubules with impairments of spermatogenesis showed prominent NLRP3 staining. In order to explore a possible role of NLRP3 in male infertility, associated with sterile testicular inflammation, we studied a mouse model of male infertility. These human aromatase-expressing transgenic mice (AROM+) develop testicular inflammation and impaired spermatogenesis during aging, and the present data show that this is associated with strikingly elevated Nlrp3 expression in the testes compared to WT controls. Interference by aromatase inhibitor treatment significantly reduced increased Nlrp3 levels. Thus, throughout species NLRP3 is expressed by somatic cells of the testis, which are involved in testicular immune surveillance. We conclude that NLRP3 may be a novel player in testicular immune regulation.
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Affiliation(s)
- Lena Walenta
- Cell Biology - Anatomy IIIBiomedical Center Munich (BMC), Ludwig-Maximilians-Universität München, Martinsried, Germany
| | - Nina Schmid
- Cell Biology - Anatomy IIIBiomedical Center Munich (BMC), Ludwig-Maximilians-Universität München, Martinsried, Germany
| | | | | | - Henryk F Urbanski
- Division of NeuroscienceOregon National Primate Research Center, Beaverton, Oregon, USA
| | - Rüdiger Behr
- Platform Degenerative DiseasesGerman Primate Center, Göttingen, Germany
| | - Leena Strauss
- Institute of BiomedicineResearch Center for Integrative Physiology and Pharmacology and Turku Center for Disease Modeling, University of Turku, Turku, Finland
| | - Matti Poutanen
- Institute of BiomedicineResearch Center for Integrative Physiology and Pharmacology and Turku Center for Disease Modeling, University of Turku, Turku, Finland
| | - Artur Mayerhofer
- Cell Biology - Anatomy IIIBiomedical Center Munich (BMC), Ludwig-Maximilians-Universität München, Martinsried, Germany
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29
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Kuang J, Xie M, Wei X. The NALP3 inflammasome is required for collagen synthesis via the NF‑κB pathway. Int J Mol Med 2018; 41:2279-2287. [PMID: 29393339 DOI: 10.3892/ijmm.2018.3404] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Accepted: 01/08/2018] [Indexed: 02/05/2023] Open
Abstract
The NALP3 inflammasome interacts with various immune and cell metabolic pathways and may participate in pulmonary fibrosis. However, little is known on its regulatory mechanism with respect to collagen synthesis. The objective of the present study was to investigate whether NALP3 inflammasome activation is involved in H2O2‑mediated collagen synthesis, in addition to examining the possible cell signaling mechanisms underlying this effect. It was demonstrated that the NF‑κB signaling pathway was activated under conditions of H2O2‑mediated oxidative stress in NIH‑3T3 mouse embryonic fibroblasts. H2O2‑exposed fibroblasts exhibited activated NALP3 inflammasomes via increased NALP3, apoptosis‑associated Speck‑like protein and caspase‑1 expression and the secretion of interleukin‑1β. H2O2 also elevated α‑SMA and type I collagen expression. In vitro silencing of NALP3 attenuated the degradation of IκBα and decreased the synthesis of type I collagen. Furthermore, the NALP3 inflammasome was found to be activated in bleomycin‑induced pulmonary fibrosis in mice, and this activation was relieved by a nuclear factor (NF)‑κB inhibitor. Taken together, these findings indicate that the NALP3 inflammasome is involved in H2O2‑induced type I collagen synthesis, which is mediated by the NF‑κB signaling pathway. Additionally, the NALP3 inflammasome contributes to the development of bleomycin‑induced pulmonary fibrosis.
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Affiliation(s)
- Ju Kuang
- Department of Respiratory Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Min Xie
- Department of Respiratory Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Xiaolin Wei
- Department of Respiratory Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
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30
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Li QR, Tan SR, Yu J, Yang J. MicroRNA-124 alleviates hyperoxia-induced inflammatory response in pulmonary epithelial cell by inhibiting TLR4/NF-κB/CCL2. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2018; 11:76-87. [PMID: 31938089 PMCID: PMC6957945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 11/09/2017] [Indexed: 06/10/2023]
Abstract
BACKGROUND Lung epithelial cell dysfunction induced by hyperoxia-associated oxidative stress is a prominent feature involved in the development of acute lung injury (ALI). How the underlying molecular mechanisms contributed to this process are poorly defined. In the present study, we sought to identify the role of miR-124 in hyperoxia-induced cell apoptosis and excessive inflammatory response in pulmonary epithelial cell. METHODS The miR-124 levels in pulmonary epithelial cell were assayed by qRT-PCR. MiR-124 mimics and inhibitors were transfected to gain or loss of miR-124 function. Cell proliferation was analyzed by CCK8 assay. Cell apoptosis was analyzed by flow cytometry. The targeted genes were predicted by a bioinformatics algorithm and confirmed by a dual luciferase reporter assay. The protein levels were assayed by western blotting. RESULTS The results showed that miR-124 was significantly down-regulated in Beas2B cells and primary LECs upon hyperoxia exposure conditions. However, overexpression of miR-124 dramatically attenuated hyperoxia-provoked TLR4, NF-κB and pro-inflammatory cytokines production. In vitro, the cell viability and apoptosis was significantly reversed following transfection with miR-124 mimics in the presence of hyperoxia. Furthermore, the 3'-untranslated region (3'-UTR) of CCL2 was bound by miR-124. CONCLUSION It was concluded that miR-124 inhibited hyperoxia-induced apoptosis and excessive inflammatory response in Beas2B cells and primary LECs, at least partially, through the inhibition of TLR4/NF-κB/CCL2 signaling cascades.
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Affiliation(s)
- Qing-Rong Li
- The Second Affiliated Hospital of Kunming Medical UniversityKunming 650101, China
| | - Shi-Rui Tan
- Center for Life Sciences, School of Life Sciences, Yunnan UniversityKunming 650500, China
| | - Junxu Yu
- Center for Life Sciences, School of Life Sciences, Yunnan UniversityKunming 650500, China
| | - Jinghui Yang
- The First People’s Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and TechnologyKunming, China
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31
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Bai H, Zhang QF, Duan JJ, Yu DJ, Liu LJ. Downregulation of signal transduction and STAT3 expression exacerbates oxidative stress mediated by NLRP3 inflammasome. Neural Regen Res 2018; 13:2147-2155. [PMID: 30323145 PMCID: PMC6199955 DOI: 10.4103/1673-5374.241470] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Activated nucleotide binding to the oligonucleotide receptor protein 3 (NLRP3) inflammasome is possibly involved in the pathogenesis of Alzheimer's disease through oxidative stress and neurogenic inflammation. Low expression of the signal transducer and activator of transcription 3 (STAT3) gene may promote the occurrence of neurodegenerative diseases to some extent. To clarify the roles of the NLRP3 inflammasome and STAT3 expression in oxidative stress, (1) SHSY5Y cells were incubated with 1 mM H2O2 to induce oxidative stress injury, and the expression of human-cell-specific signal transduction, STAT3-shRNA silencing signal transduction and STAT3 were detected. Cells were pretreated with Ca2+ chelator BAPATA-AM (0.1 mM) for 30 minutes as a control. (2) Western blot assay was used to analyze the expression of caspase-1, NLRP3, signal transduction and STAT3. Enzyme-linked immunosorbent assay was used to analyze interleukin-1β levels. Flow cytometry was carried out to calculate the number of apoptotic cells. We found that H2O2 treatment activated NLRP3 inflammasomes and decreased phosphorylation of signal transduction and STAT3 serine 727. BAPTA-AM pretreatment abolished the H2O2-induced activation of NLRP3 inflammasomes, caspase-1 expression, interleukin-1β expression and apoptosis in SHSY5Y cells, and had no effect in cells with downregulated STAT3 expression by RNAi. The findings suggest that downregulation of signal transduction and STAT3 expression may enhance the oxidative stress mediated by NLRP3, which may not depend on the Ca2+ signaling pathway.
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Affiliation(s)
- Hua Bai
- Medical Laboratory Center; Department of Neurology, Third Affiliated Hospital, Guizhou Medical University, Duyun, Guizhou Province, China
| | - Qi-Fang Zhang
- Key Laboratory of Endemic and Ethnic Diseases of Ministry of Education, and Key Laboratory of Medical Molecular Biology, Guizhou Medical University, Guiyang, Guizhou Province, China
| | - Juan-Juan Duan
- Key Laboratory of Endemic and Ethnic Diseases of Ministry of Education, and Key Laboratory of Medical Molecular Biology, Guizhou Medical University, Guiyang, Guizhou Province, China
| | - De-Jun Yu
- Medical Laboratory Center, Third Affiliated Hospital, Guizhou Medical University, Duyun, Guizhou Province, China
| | - Li-Jie Liu
- Department of Neurology, Third Affiliated Hospital, Guizhou Medical University, Duyun, Guizhou Province, China
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Abstract
Inflammasomes are large innate cytoplasmic complexes that play a major role in promoting inflammation in the lung in response to a range of environmental and infectious stimuli. Inflammasomes are critical for driving acute innate immune responses that resolve infection and maintain tissue homeostasis. However, dysregulated or excessive inflammasome activation can be detrimental. Here, we discuss the plethora of recent data from clinical studies and small animal disease models that implicate excessive inflammasome responses in the pathogenesis of a number of acute and chronic respiratory inflammatory diseases. Understanding of the role of inflammasomes in lung disease is of great therapeutic interest.
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Affiliation(s)
- Saleela M Ruwanpura
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia
- Department of Molecular Translational Science, Faculty of Medicine, Nursing and Health Sciences, Monash University, Clayton, VIC, Australia
| | - Sarah Rosli
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia
- Department of Molecular Translational Science, Faculty of Medicine, Nursing and Health Sciences, Monash University, Clayton, VIC, Australia
| | - Michelle D Tate
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia.
- Department of Molecular Translational Science, Faculty of Medicine, Nursing and Health Sciences, Monash University, Clayton, VIC, Australia.
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Cordero MD, Alcocer-Gómez E. Inflammasome in the Pathogenesis of Pulmonary Diseases. EXPERIENTIA SUPPLEMENTUM (2012) 2018; 108:111-151. [PMID: 30536170 PMCID: PMC7123416 DOI: 10.1007/978-3-319-89390-7_6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Lung diseases are common and significant causes of illness and death around the world. Inflammasomes have emerged as an important regulator of lung diseases. The important role of IL-1 beta and IL-18 in the inflammatory response of many lung diseases has been elucidated. The cleavage to turn IL-1 beta and IL-18 from their precursors into the active forms is tightly regulated by inflammasomes. In this chapter, we structurally review current evidence of inflammasome-related components in the pathogenesis of acute and chronic lung diseases, focusing on the "inflammasome-caspase-1-IL-1 beta/IL-18" axis.
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Affiliation(s)
- Mario D. Cordero
- Department of Physiology, Institute of Nutrition and Food Technology “José Mataix”, Biomedical Research Center (CIBM), University of Granada, Armilla, Spain
| | - Elísabet Alcocer-Gómez
- Departamento de Psicología Experimental, Facultad de Psicología, Universidad de Sevilla, Seville, Spain
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Bai C, Li T, Sun Q, Xin Q, Xu T, Yu J, Wang Y, Wei L. Protective effect of baicalin against severe burn‑induced remote acute lung injury in rats. Mol Med Rep 2017; 17:2689-2694. [PMID: 29207058 DOI: 10.3892/mmr.2017.8120] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Accepted: 10/03/2017] [Indexed: 11/05/2022] Open
Abstract
Baicalin exhibits antibacterial, anti‑viral, anti‑oxidative, antipyretic, analgesic, anti‑inflammatory and anti‑tumor properties. The chemical scavenges oxygen free radicals, protects the cardiovascular system and neurons, protects the liver, and has been used for the prevention and treatment of diabetes‑associated complications. The present study investigated the effect of baicalin on severe burn‑induced remote acute lung injury (ALI). The present study demonstrated that baicalin significantly decreased the lung wet‑to‑dry weight ratio, improved pulmonary histological alterations and reduced the expression of high mobility group protein B1 in the rat model of ALI. In addition, treatment with baicalin decreased tumor necrosis factor‑α, interleukin (IL)‑8, IL‑1β and IL‑18 concentrations in the serum, reduced myeloperoxidase activity and malondialdehyde content, and increased the level of superoxide dismutase in the serum in treated model rats with ALI. As a result, baicalin significantly suppressed nucleotide‑binding oligomerization, NACHT, LRR and PYD domains‑containing protein 3 (NLRP3), caspase‑1, nuclear factor‑κB and matrix metalloproteinase‑9 protein expression in the rat model of ALI. The results of the present study suggested that baicalin may serve a protective role against ALI in rats through the NLRP3 signaling pathway.
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Affiliation(s)
- Chongfeng Bai
- Postdoctoral Research Station of Qingdao University, Qingdao, Shandong 266071, P.R. China
| | - Tao Li
- Department of Cardiothoracic Surgery, 401 Hospital of People's Liberation Army, Qingdao, Shandong 266071, P.R. China
| | - Qing Sun
- Department of Hyperbaric Medicine, 401 Hospital of People's Liberation Army, Qingdao, Shandong 266071, P.R. China
| | - Qun Xin
- Department of General Surgery, 401 Hospital of People's Liberation Army, Qingdao, Shandong 266071, P.R. China
| | - Tongyi Xu
- Department of Cardiothoracic Surgery, 401 Hospital of People's Liberation Army, Qingdao, Shandong 266071, P.R. China
| | - Jinjian Yu
- Department of Cardiothoracic Surgery, 401 Hospital of People's Liberation Army, Qingdao, Shandong 266071, P.R. China
| | - Yun Wang
- Department of Cardiothoracic Surgery, 401 Hospital of People's Liberation Army, Qingdao, Shandong 266071, P.R. China
| | - Li Wei
- Postdoctoral Research Station of Qingdao University, Qingdao, Shandong 266071, P.R. China
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Wang R, Yin YX, Mahmood Q, Wang XJ, Gao YP, Gou GJ, Ahmed MM, Kohji F, Du YZ, Han F. Calmodulin inhibitor ameliorates cognitive dysfunction via inhibiting nitrosative stress and NLRP3 signaling in mice with bilateral carotid artery stenosis. CNS Neurosci Ther 2017; 23:818-826. [DOI: 10.1111/cns.12726] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 07/28/2017] [Accepted: 07/31/2017] [Indexed: 12/18/2022] Open
Affiliation(s)
- Rui Wang
- College of Pharmaceutical Sciences; Zhejiang University; Hangzhou China
- Department of Pharmacology; Key Laboratory of Ministry of Education in Fertility Preservation and Maintenance; Ningxia Medical University; Yinchuan China
| | - Yi-Xuan Yin
- College of Pharmaceutical Sciences; Zhejiang University; Hangzhou China
| | - Qaisar Mahmood
- College of Pharmaceutical Sciences; Zhejiang University; Hangzhou China
| | - Xiao-Juan Wang
- College of Pharmaceutical Sciences; Zhejiang University; Hangzhou China
| | - Yin-Ping Gao
- College of Pharmaceutical Sciences; Zhejiang University; Hangzhou China
| | - Guo-Jing Gou
- Department of Medical Chemistry; Ningxia Medical University; Yinchuan China
| | | | - Fukunag Kohji
- Department of Pharmacology; Tohoku University Graduate School of Pharmaceutical Sciences; Sendai Japan
| | - Yong-Zhong Du
- College of Pharmaceutical Sciences; Zhejiang University; Hangzhou China
| | - Feng Han
- College of Pharmaceutical Sciences; Zhejiang University; Hangzhou China
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Schwingshackl A, Lopez B, Teng B, Luellen C, Lesage F, Belperio J, Olcese R, Waters CM. Hyperoxia treatment of TREK-1/TREK-2/TRAAK-deficient mice is associated with a reduction in surfactant proteins. Am J Physiol Lung Cell Mol Physiol 2017; 313:L1030-L1046. [PMID: 28839101 DOI: 10.1152/ajplung.00121.2017] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 08/15/2017] [Accepted: 08/16/2017] [Indexed: 12/29/2022] Open
Abstract
We previously proposed a role for the two-pore domain potassium (K2P) channel TREK-1 in hyperoxia (HO)-induced lung injury. To determine whether redundancy among the three TREK isoforms (TREK-1, TREK-2, and TRAAK) could protect from HO-induced injury, we now examined the effect of deletion of all three TREK isoforms in a clinically relevant scenario of prolonged HO exposure and mechanical ventilation (MV). We exposed WT and TREK-1/TREK-2/TRAAK-deficient [triple knockout (KO)] mice to either room air, 72-h HO, MV [high and low tidal volume (TV)], or a combination of HO + MV and measured quasistatic lung compliance, bronchoalveolar lavage (BAL) protein concentration, histologic lung injury scores (LIS), cellular apoptosis, and cytokine levels. We determined surfactant gene and protein expression and attempted to prevent HO-induced lung injury by prophylactically administering an exogenous surfactant (Curosurf). HO treatment increased lung injury in triple KO but not WT mice, including an elevated LIS, BAL protein concentration, and markers of apoptosis, decreased lung compliance, and a more proinflammatory cytokine phenotype. MV alone had no effect on lung injury markers. Exposure to HO + MV (low TV) further decreased lung compliance in triple KO but not WT mice, and HO + MV (high TV) was lethal for triple KO mice. In triple KO mice, the HO-induced lung injury was associated with decreased surfactant protein (SP) A and SPC but not SPB and SPD expression. However, these changes could not be explained by alterations in the transcription factors nuclear factor-1 (NF-1), NKX2.1/thyroid transcription factor-1 (TTF-1) or c-jun, or lamellar body levels. Prophylactic Curosurf administration did not improve lung injury scores or compliance in triple KO mice.
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Affiliation(s)
| | - Benjamin Lopez
- Department of Pediatrics, University of California, Los Angeles, California
| | - Bin Teng
- Department of Physiology, University of Tennessee Health Science Center, Memphis, Tennessee; and
| | - Charlean Luellen
- Department of Physiology, University of Tennessee Health Science Center, Memphis, Tennessee; and
| | - Florian Lesage
- Université Côte d'Azur, Institut de Pharmacologie Moléculaire et Cellulaire, Centre National de la Recherche Scientifique, Laboratory of Excellence "Ion Channel Science and Therapeutics," Valbonne, France
| | - John Belperio
- Department of Pulmonary and Critical Care, University of California, Los Angeles, California
| | - Riccardo Olcese
- Department of Anesthesiology and Perioperative Medicine, University of California, Los Angeles, California
| | - Christopher M Waters
- Department of Physiology, University of Tennessee Health Science Center, Memphis, Tennessee; and
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Yang D, Cao X, Wang F, Jiang H, Feng D, Guo H, Du L, Jin Y, Chen Y, Yin X, Li C. LFG-500, a novel synthetic flavonoid, suppresses epithelial-mesenchymal transition in human lung adenocarcinoma cells by inhibiting NLRP3 in inflammatory microenvironment. Cancer Lett 2017; 400:137-148. [PMID: 28461245 DOI: 10.1016/j.canlet.2017.04.035] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Revised: 04/20/2017] [Accepted: 04/21/2017] [Indexed: 12/17/2022]
Abstract
Increasing evidence indicates that inflammatory microenvironment facilitates tumor metastasis. Here, we found that LFG-500, a novel synthetic flavonoid, significantly inhibited epithelial-mesenchymal transition (EMT) in human lung adenocarcinoma A549 and H1299 cells co-cultured with LPS-challenged THP-1 cells or cultured in THP-1 cell-derived conditioned medium. Moreover, we found that TNF-α is a direct and decisive factor for promoting EMT and LFG-500 suppressed TNF-α-induced EMT and cell motility. NLRP3 knockdown inactivated NLRP3 inflammasome, which subsequently inhibited EMT and blocked cell migration, indicating that TNF-α-induced EMT requires the NLRP3 inflammasome. LFG-500 inhibited the activation of the NLRP3 inflammasome, thus inhibiting EMT. Moreover, LFG-500 treatment significantly inhibited metastasis in vivo by downregulating NLRP3 expression. Importantly, we found that NLRP3 was highly expressed in high-grade lung adenocarcinoma and that its expression was correlated with lymph node metastasis. NLRP3 and vimentin levels were significantly increased in matched metastatic lymph nodes. Moreover, a significant positive correlation was observed between their levels. Together, these results suggest that LFG-500 markedly suppresses EMT by inhibiting the NLRP3 inflammasome in the inflammatory microenvironment and that NLRP3 is a potential biomarker of lung adenocarcinoma metastasis.
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Affiliation(s)
- Dan Yang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou, PR China
| | - Xin Cao
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou, PR China
| | - Fan Wang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou, PR China
| | - Haijing Jiang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou, PR China
| | - Dingding Feng
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou, PR China
| | - Hao Guo
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou, PR China
| | - Lei Du
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou, PR China
| | - Yingliang Jin
- School of Public Health, Xuzhou Medical University, Xuzhou, PR China
| | - Yansu Chen
- School of Public Health, Xuzhou Medical University, Xuzhou, PR China
| | - Xiaoxing Yin
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou, PR China.
| | - Chenglin Li
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou, PR China.
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38
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Li Y, Wang S, Fan J, Zhang X, Qian X, Zhang X, Luan J, Song P, Wang Z, Chen Q, Ju D. Targeting TNFα Ameliorated Cationic PAMAM Dendrimer-Induced Hepatotoxicity via Regulating NLRP3 Inflammasomes Pathway. ACS Biomater Sci Eng 2017; 3:843-853. [DOI: 10.1021/acsbiomaterials.6b00790] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Yubin Li
- Department of Microbiological and Biochemical Pharmacy & The Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, and §Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, P.R. China
- Department of Dermatology, Perelman School of Medicine, and ∥Center for Advanced
Rentinal and Ocular Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Shaofei Wang
- Department of Microbiological and Biochemical Pharmacy & The Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, and §Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, P.R. China
- Department of Dermatology, Perelman School of Medicine, and ∥Center for Advanced
Rentinal and Ocular Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Jiajun Fan
- Department of Microbiological and Biochemical Pharmacy & The Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, and §Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, P.R. China
- Department of Dermatology, Perelman School of Medicine, and ∥Center for Advanced
Rentinal and Ocular Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Xuesai Zhang
- Department of Microbiological and Biochemical Pharmacy & The Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, and §Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, P.R. China
- Department of Dermatology, Perelman School of Medicine, and ∥Center for Advanced
Rentinal and Ocular Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Xiaolu Qian
- Department of Microbiological and Biochemical Pharmacy & The Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, and §Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, P.R. China
- Department of Dermatology, Perelman School of Medicine, and ∥Center for Advanced
Rentinal and Ocular Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Xuyao Zhang
- Department of Microbiological and Biochemical Pharmacy & The Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, and §Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, P.R. China
- Department of Dermatology, Perelman School of Medicine, and ∥Center for Advanced
Rentinal and Ocular Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Jingyun Luan
- Department of Microbiological and Biochemical Pharmacy & The Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, and §Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, P.R. China
- Department of Dermatology, Perelman School of Medicine, and ∥Center for Advanced
Rentinal and Ocular Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Ping Song
- Department of Microbiological and Biochemical Pharmacy & The Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, and §Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, P.R. China
- Department of Dermatology, Perelman School of Medicine, and ∥Center for Advanced
Rentinal and Ocular Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Ziyu Wang
- Department of Microbiological and Biochemical Pharmacy & The Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, and §Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, P.R. China
- Department of Dermatology, Perelman School of Medicine, and ∥Center for Advanced
Rentinal and Ocular Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Qicheng Chen
- Department of Microbiological and Biochemical Pharmacy & The Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, and §Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, P.R. China
- Department of Dermatology, Perelman School of Medicine, and ∥Center for Advanced
Rentinal and Ocular Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Dianwen Ju
- Department of Microbiological and Biochemical Pharmacy & The Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, and §Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, P.R. China
- Department of Dermatology, Perelman School of Medicine, and ∥Center for Advanced
Rentinal and Ocular Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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Jiang L, Zhang L, Kang K, Fei D, Gong R, Cao Y, Pan S, Zhao M, Zhao M. Resveratrol ameliorates LPS-induced acute lung injury via NLRP3 inflammasome modulation. Biomed Pharmacother 2016; 84:130-138. [DOI: 10.1016/j.biopha.2016.09.020] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 09/07/2016] [Indexed: 12/25/2022] Open
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Kimura H, Karasawa T, Usui F, Kawashima A, Endo Y, Kobayashi M, Sadatomo A, Nakamura J, Iwasaki Y, Yada T, Tsutsui H, Kasahara T, Takahashi M. Caspase-1 deficiency promotes high-fat diet-induced adipose tissue inflammation and the development of obesity. Am J Physiol Endocrinol Metab 2016; 311:E881-E890. [PMID: 27702746 DOI: 10.1152/ajpendo.00174.2016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 09/07/2016] [Accepted: 09/23/2016] [Indexed: 02/06/2023]
Abstract
Caspase-1 is a cysteine protease responsible for the processing of the proinflammatory cytokine interleukin-1β and activated by the formation of inflammasome complexes. Although several investigations have found a link between diet-induced obesity and caspase-1, the relationship remains controversial. Here, we found that mice deficient in caspase-1 were susceptible to high-fat diet-induced obesity with increased adiposity as well as normal lipid and glucose metabolism. Caspase-1 deficiency clearly promoted the infiltration of inflammatory macrophages and increased the production of C-C motif chemokine ligand 2 (CCL2) in the adipose tissue. The dominant cellular source of CCL2 was stromal vascular fraction rather than adipocytes in the adipose tissue. These findings demonstrate a critical role of caspase-1 in macrophage-driven inflammation in the adipose tissue and the development of obesity. These data provide novel insights into the mechanisms underlying inflammation in the pathophysiology of obesity.
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Affiliation(s)
- Hiroaki Kimura
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan;
| | - Tadayoshi Karasawa
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Fumitake Usui
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Akira Kawashima
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Yuka Endo
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Motoi Kobayashi
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Ai Sadatomo
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Jun Nakamura
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Yusaku Iwasaki
- Division of Integrative Physiology, Jichi Medical University, Tochigi, Japan; and
| | - Toshihiko Yada
- Division of Integrative Physiology, Jichi Medical University, Tochigi, Japan; and
| | - Hiroko Tsutsui
- Department of Microbiology, Hyogo College of Medicine, Nishinomiya, Japan
| | - Tadashi Kasahara
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Masafumi Takahashi
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
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41
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Lee S, Suh GY, Ryter SW, Choi AMK. Regulation and Function of the Nucleotide Binding Domain Leucine-Rich Repeat-Containing Receptor, Pyrin Domain-Containing-3 Inflammasome in Lung Disease. Am J Respir Cell Mol Biol 2016; 54:151-60. [PMID: 26418144 DOI: 10.1165/rcmb.2015-0231tr] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Inflammasomes are specialized inflammatory signaling platforms that govern the maturation and secretion of proinflammatory cytokines, such as IL-1β and IL-18, through the regulation of caspase-1-dependent proteolytic processing. Several nucleotide binding domain leucine-rich repeat-containing receptor (NLR) family members (i.e., NLR family, pyrin domain containing [NLRP] 1, NLRP3, and NLR family, caspase recruitment domain containing-4 [NLRC4]) as well as the pyrin and hemopoietic expression, interferon-inducibility, nuclear localization domain-containing family member, absent in melanoma 2, can form inflammasome complexes in human cells. In particular, the NLRP3 inflammasome is activated in response to cellular stresses through a two-component pathway, involving Toll-like receptor 4-ligand interaction (priming) followed by a second signal, such as ATP-dependent P2X purinoreceptor 7 receptor activation. Emerging studies suggest that the NLRP3 inflammasome can exert pleiotropic effects in human diseases with potentially both pro- and antipathogenic sequelae. Whereas NLRP3 inflammasome activation can serve as a vital component of host defense against invading bacteria and pathogens, excessive activation of the inflammasome can lead to inflammation-associated tissue injury in the setting of chronic disease. In addition, pyroptosis, an inflammasome-associated mode of cell death, contributes to host defense. Recent research has described the regulation and function of the NLRP3 inflammasome in various pulmonary diseases, including acute lung injury and acute respiratory distress syndrome, sepsis, respiratory infections, chronic obstructive pulmonary disease, asthma, pulmonary hypertension, cystic fibrosis, and idiopathic pulmonary fibrosis. The NLRP3 and related inflammasomes, and their regulated cytokines or receptors, may represent novel diagnostic or therapeutic targets in pulmonary diseases and other diseases in which inflammation contributes to pathogenesis.
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Affiliation(s)
- Seonmin Lee
- 1 Department of Critical Care Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Gee-Young Suh
- 1 Department of Critical Care Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Stefan W Ryter
- 2 Joan and Sanford I. Weill Department of Medicine, New York-Presbyterian Hospital, New York, New York; and.,3 Division of Pulmonary and Critical Care Medicine, Weill Cornell Medical Center, New York, New York
| | - Augustine M K Choi
- 2 Joan and Sanford I. Weill Department of Medicine, New York-Presbyterian Hospital, New York, New York; and.,3 Division of Pulmonary and Critical Care Medicine, Weill Cornell Medical Center, New York, New York
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Qiao L, Xu C, Li Q, Mei Z, Li X, Cai H, Liu W. Photodynamic therapy activated STAT3 associated pathways: Targeting intrinsic apoptotic pathways to increase PDT efficacy in human squamous carcinoma cells. Photodiagnosis Photodyn Ther 2016; 14:119-27. [DOI: 10.1016/j.pdpdt.2015.11.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Revised: 11/06/2015] [Accepted: 11/16/2015] [Indexed: 02/07/2023]
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NLRP3 Deficiency Reduces Macrophage Interleukin-10 Production and Enhances the Susceptibility to Doxorubicin-induced Cardiotoxicity. Sci Rep 2016; 6:26489. [PMID: 27225830 PMCID: PMC4880937 DOI: 10.1038/srep26489] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 05/04/2016] [Indexed: 01/04/2023] Open
Abstract
NLRP3 inflammasomes recognize non-microbial danger signals and induce release of proinflammatory cytokine interleukin (IL)-1β, leading to sterile inflammation in cardiovascular disease. Because sterile inflammation is involved in doxorubicin (Dox)-induced cardiotoxicity, we investigated the role of NLRP3 inflammasomes in Dox-induced cardiotoxicity. Cardiac dysfunction and injury were induced by low-dose Dox (15 mg/kg) administration in NLRP3-deficient (NLRP3−/−) mice but not in wild-type (WT) and IL-1β−/− mice, indicating that NLRP3 deficiency enhanced the susceptibility to Dox-induced cardiotoxicity independent of IL-1β. Although the hearts of WT and NLRP3−/− mice showed no significant difference in inflammatory cell infiltration, macrophages were the predominant inflammatory cells in the hearts, and cardiac IL-10 production was decreased in Dox-treated NLRP3−/− mice. Bone marrow transplantation experiments showed that bone marrow-derived cells contributed to the exacerbation of Dox-induced cardiotoxicity in NLRP3−/− mice. In vitro experiments revealed that NLRP3 deficiency decreased IL-10 production in macrophages. Furthermore, adeno-associated virus-mediated IL-10 overexpression restored the exacerbation of cardiotoxicity in the NLRP3−/− mice. These results demonstrated that NLRP3 regulates macrophage IL-10 production and contributes to the pathophysiology of Dox-induced cardiotoxicity, which is independent of IL-1β. Our findings identify a novel role of NLRP3 and provided new insights into the mechanisms underlying Dox-induced cardiotoxicity.
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Wang H, Wang Y, Du Q, Lu P, Fan H, Lu J, Hu R. Inflammasome-independent NLRP3 is required for epithelial-mesenchymal transition in colon cancer cells. Exp Cell Res 2016; 342:184-92. [PMID: 26968633 DOI: 10.1016/j.yexcr.2016.03.009] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 03/07/2016] [Accepted: 03/07/2016] [Indexed: 12/22/2022]
Abstract
Inflammasome NLRP3 plays a crucial role in the process of colitis and colitis--associated colon cancer. Even though much is known regarding the NLRP3 inflammasome that regulates pro-inflammatory cytokine release in innate immune cells, the role of NLRP3 in non-immune cells is still unclear. In this study, we showed that NLRP3 was highly expressed in mesenchymal-like colon cancer cells (SW620), and was upregulated by tumor necrosis factors-α (TNF-α) and transforming growth factor-β1 (TGF-β1) respectively, during EMT in colon cancer epithelial cells HCT116 and HT29. Knockdown of NLRP3 retained epithelial spindle-like morphology of HCT116 and HT29 cells and reversed the mesenchymal characteristic of SW620 cells, indicated by the decreased expression of vimentin and MMP9 and increased expression of E-cadherin. In addition, knockdown of NLRP3 in colorectal carcinoma cells displayed diminished cell migration and invasion. Interestingly, during the EMT process induced by TNF-α or TGF-β1, the cleaved caspase-1 and ASC speck were not detected, indicating that NLRP3 functions in an inflammasome-independent way. Further studies demonstrated that NLRP3 protein expression was regulated by NF-κB signaling in TNF-α or TGF-β1-induced EMT, as verified by the NF-κB inhibitor Bay 11-7082. Moreover, NLRP3 knockdown reduced the expression of Snail1, indicating that NLRP3 may promote EMT through regulating Snail1. In summary, our results showed that the NLRP3 expression, not the inflammasome activation, was required for EMT in colorectal cancer cells.
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Affiliation(s)
- Hong Wang
- State Key Laboratory of Natural Medicines, Department of Physiology, China Pharmaceutical University, Nanjing, Jiangsu 210009, China
| | - Yajing Wang
- State Key Laboratory of Natural Medicines, Department of Physiology, China Pharmaceutical University, Nanjing, Jiangsu 210009, China
| | - Qianming Du
- State Key Laboratory of Natural Medicines, Department of Physiology, China Pharmaceutical University, Nanjing, Jiangsu 210009, China
| | - Ping Lu
- State Key Laboratory of Natural Medicines, Department of Physiology, China Pharmaceutical University, Nanjing, Jiangsu 210009, China
| | - Huimin Fan
- State Key Laboratory of Natural Medicines, Department of Physiology, China Pharmaceutical University, Nanjing, Jiangsu 210009, China
| | - Jinrong Lu
- Department of Organic Chemistry, China Pharmaceutical University, Nanjing, Jiangsu 210009, China
| | - Rong Hu
- State Key Laboratory of Natural Medicines, Department of Physiology, China Pharmaceutical University, Nanjing, Jiangsu 210009, China.
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Jun C, Jun L, Shiting L, Qiangguo G, Gang Z. [Calcitonin gene-related peptide inhibits the expression of Nod-like receptor protein 3 to Dromote osteoblast differentiation in mouse osteoblasts in vitro]. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2016; 34:12-16. [PMID: 27266191 PMCID: PMC7030767 DOI: 10.7518/hxkq.2016.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 11/18/2015] [Indexed: 06/06/2023]
Abstract
OBJECTIVE This study aims to investigate the regulatory effects of calcitonin gene-related peptide (CGRP) on Nod-like receptor protein 3 (NLRP3) and interleukin-1β (IL-1β) to promote osteoblast differentiation. METHODS Different concentrations of CGRP (0, 10, 30, 100 ng · mL⁻¹) were added to mouse osteoblasts in vitro. The mRNA and protein expression levels of both NLRP3 and IL-1β were examined using Real-time polymerase chain reaction and Western blot, respectively. Moreover, the concentrations of IL-1β protein and intracellular reactive oxygen species (ROS) were detected using enzyme-linked immunosorbent assay and flow cytometry, respectively. The osteogenic differentiation of mouse osteoblasts was identified through alizarin red staining. RESULTS The protein and mRNA expression levels of both NLRP3 and IL-1β significantly decreased (P < 0.05) with increasing CGRP concentration. Moreover, the contents of intracellular ROS gradually decreased (P<0.05). The osteogenic differentiation of the osteoblasts was more enhanced in the group treated with 100 ng · mL⁻¹ CGRP than in the empty group (0 ng · mL⁻¹ CGRP). CONCLUSION CGRP promotes osteoblast differentiation by inhibiting the expression of inflammatory factors.
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Karasawa T, Takahashi M. Letter by Karasawa and Takahashi Regarding Article, "Anti-inflammatory and Antiatherogenic Effects of the Inflammasome NLRP3 Inhibitor Arglabin in ApoE2.Ki Mice Fed a High-Fat Diet". Circulation 2015; 132:e249. [PMID: 26596982 DOI: 10.1161/circulationaha.115.016070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Tadayoshi Karasawa
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Masafumi Takahashi
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
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Shirasuna K, Karasawa T, Usui F, Kobayashi M, Komada T, Kimura H, Kawashima A, Ohkuchi A, Taniguchi S, Takahashi M. NLRP3 Deficiency Improves Angiotensin II-Induced Hypertension But Not Fetal Growth Restriction During Pregnancy. Endocrinology 2015; 156:4281-92. [PMID: 26360504 DOI: 10.1210/en.2015-1408] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Preeclampsia is a pregnancy-specific syndrome characterized by elevated blood pressure, proteinuria, and intrauterine growth restriction (IUGR). Although sterile inflammation appears to be involved, its pathogenesis remains unclear. Recent evidence indicates that sterile inflammation is mediated through the nucleotide-binding oligomerization domain-like receptor family pyrin domain-containing 3 (NLRP3) inflammasomes, composed of NLRP3, apoptosis-associated speck-like protein containing a caspase recruitment domain (ASC), and caspase-1. Here we investigated the role of the NLRP3 inflammasomes in the pathogenesis of preeclampsia using Nlrp3(-/-) and Asc(-/-) (Nlrp3 and Asc deficient) pregnant mice. During pregnancy in mice, continuous infusion of high-dose angiotensin II (AngII) induced hypertension, proteinuria, and IUGR, whereas infusion of low-dose AngII caused hypertension alone. AngII-induced hypertension was prevented in Nlrp3(-/-) mice but not in Asc(-/-), indicating that NLRP3 contributes to gestational hypertension independently of ASC-mediated inflammasomes. Although NLRP3 deficiency had no effect on IUGR, it restored the IL-6 up-regulation in the placenta and kidney of AngII-infused mice. Furthermore, treatment with hydralazine prevented the development of gestational hypertension but not IUGR or IL-6 expression in the placenta and kidney. These findings demonstrate that NLRP3 contributes to the development of gestational hypertension independently of the inflammasomes and that IUGR and kidney injury can occur independent of blood pressure elevation during pregnancy.
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Affiliation(s)
- Koumei Shirasuna
- Division of Inflammation Research (K.S., T.Ka., F.U., M.K., T.Ko., H.K., A.K., M.T.), Center for Molecular Medicine, Department of Obstetrics and Gynecology (A.O.), Jichi Medical University, Tochigi 329-0498, Japan; Department of Animal Science (K.S.), Tokyo University of Agriculture, Kanagawa 243-0034, Japan; and Department of Molecular Oncology (S.T.), Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Tadayoshi Karasawa
- Division of Inflammation Research (K.S., T.Ka., F.U., M.K., T.Ko., H.K., A.K., M.T.), Center for Molecular Medicine, Department of Obstetrics and Gynecology (A.O.), Jichi Medical University, Tochigi 329-0498, Japan; Department of Animal Science (K.S.), Tokyo University of Agriculture, Kanagawa 243-0034, Japan; and Department of Molecular Oncology (S.T.), Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Fumitake Usui
- Division of Inflammation Research (K.S., T.Ka., F.U., M.K., T.Ko., H.K., A.K., M.T.), Center for Molecular Medicine, Department of Obstetrics and Gynecology (A.O.), Jichi Medical University, Tochigi 329-0498, Japan; Department of Animal Science (K.S.), Tokyo University of Agriculture, Kanagawa 243-0034, Japan; and Department of Molecular Oncology (S.T.), Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Motoi Kobayashi
- Division of Inflammation Research (K.S., T.Ka., F.U., M.K., T.Ko., H.K., A.K., M.T.), Center for Molecular Medicine, Department of Obstetrics and Gynecology (A.O.), Jichi Medical University, Tochigi 329-0498, Japan; Department of Animal Science (K.S.), Tokyo University of Agriculture, Kanagawa 243-0034, Japan; and Department of Molecular Oncology (S.T.), Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Tadanori Komada
- Division of Inflammation Research (K.S., T.Ka., F.U., M.K., T.Ko., H.K., A.K., M.T.), Center for Molecular Medicine, Department of Obstetrics and Gynecology (A.O.), Jichi Medical University, Tochigi 329-0498, Japan; Department of Animal Science (K.S.), Tokyo University of Agriculture, Kanagawa 243-0034, Japan; and Department of Molecular Oncology (S.T.), Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Hiroaki Kimura
- Division of Inflammation Research (K.S., T.Ka., F.U., M.K., T.Ko., H.K., A.K., M.T.), Center for Molecular Medicine, Department of Obstetrics and Gynecology (A.O.), Jichi Medical University, Tochigi 329-0498, Japan; Department of Animal Science (K.S.), Tokyo University of Agriculture, Kanagawa 243-0034, Japan; and Department of Molecular Oncology (S.T.), Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Akira Kawashima
- Division of Inflammation Research (K.S., T.Ka., F.U., M.K., T.Ko., H.K., A.K., M.T.), Center for Molecular Medicine, Department of Obstetrics and Gynecology (A.O.), Jichi Medical University, Tochigi 329-0498, Japan; Department of Animal Science (K.S.), Tokyo University of Agriculture, Kanagawa 243-0034, Japan; and Department of Molecular Oncology (S.T.), Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Akihide Ohkuchi
- Division of Inflammation Research (K.S., T.Ka., F.U., M.K., T.Ko., H.K., A.K., M.T.), Center for Molecular Medicine, Department of Obstetrics and Gynecology (A.O.), Jichi Medical University, Tochigi 329-0498, Japan; Department of Animal Science (K.S.), Tokyo University of Agriculture, Kanagawa 243-0034, Japan; and Department of Molecular Oncology (S.T.), Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Shun'ichiro Taniguchi
- Division of Inflammation Research (K.S., T.Ka., F.U., M.K., T.Ko., H.K., A.K., M.T.), Center for Molecular Medicine, Department of Obstetrics and Gynecology (A.O.), Jichi Medical University, Tochigi 329-0498, Japan; Department of Animal Science (K.S.), Tokyo University of Agriculture, Kanagawa 243-0034, Japan; and Department of Molecular Oncology (S.T.), Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Masafumi Takahashi
- Division of Inflammation Research (K.S., T.Ka., F.U., M.K., T.Ko., H.K., A.K., M.T.), Center for Molecular Medicine, Department of Obstetrics and Gynecology (A.O.), Jichi Medical University, Tochigi 329-0498, Japan; Department of Animal Science (K.S.), Tokyo University of Agriculture, Kanagawa 243-0034, Japan; and Department of Molecular Oncology (S.T.), Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
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Yan L, Lee S, Lazzaro DR, Aranda J, Grant MB, Chaqour B. Single and Compound Knock-outs of MicroRNA (miRNA)-155 and Its Angiogenic Gene Target CCN1 in Mice Alter Vascular and Neovascular Growth in the Retina via Resident Microglia. J Biol Chem 2015; 290:23264-81. [PMID: 26242736 DOI: 10.1074/jbc.m115.646950] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Indexed: 01/09/2023] Open
Abstract
The response of the retina to ischemic insult typically leads to aberrant retinal neovascularization, a major cause of blindness. The epigenetic regulation of angiogenic gene expression by miRNAs provides new prospects for their therapeutic utility in retinal neovascularization. Here, we focus on miR-155, a microRNA functionally important in inflammation, which is of paramount importance in the pathogenesis of retinal neovascularization. Whereas constitutive miR-155-deficiency in mice results in mild vascular defects, forced expression of miR-155 causes endothelial hyperplasia and increases microglia count and activation. The mouse model of oxygen-induced retinopathy, which recapitulates ischemia-induced aberrant neovessel growth, is characterized by increased expression of miR-155 and localized areas of microglia activation. Interestingly, miR-155 deficiency in mice reduces microglial activation, curtails abnormal vessel growth, and allows for rapid normalization of the retinal vasculature following ischemic insult. miR-155 binds to the 3'-UTR and represses the expression of the CCN1 gene, which encodes an extracellular matrix-associated integrin-binding protein that both promotes physiological angiogenesis and harnesses growth factor-induced abnormal angiogenic responses. Single CCN1 deficiency or double CCN1 and miR-155 knock-out in mice causes retinal vascular malformations typical of faulty maturation, mimicking the vascular alterations of miR-155 gain of function. During development, the miR-155/CCN1 regulatory axis balances the proangiogenic and proinflammatory activities of microglia to allow for their function as guideposts for sprout fusion and anastomosis. Under ischemic conditions, dysregulated miR-155 and CCN1 expression increases the inflammatory load and microglial activation, prompting aberrant angiogenic responses. Thus, miR-155 functions in tandem with CCN1 to modulate inflammation-induced vascular homeostasis and repair.
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Affiliation(s)
- Lulu Yan
- From the Departments of Cell Biology
| | | | | | | | - Maria B Grant
- the Departments of Ophthalmology and Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Brahim Chaqour
- From the Departments of Cell Biology, Ophthalmology, and the SUNY Eye Institute, SUNY Downstate Medical Center, Brooklyn, New York 11203 and
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Role of NLRP3 Inflammasomes for Rhabdomyolysis-induced Acute Kidney Injury. Sci Rep 2015; 5:10901. [PMID: 26045078 PMCID: PMC4456665 DOI: 10.1038/srep10901] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 05/05/2015] [Indexed: 02/07/2023] Open
Abstract
Rhabdomyolysis is one of the main causes of community-acquired acute kidney injury (AKI). Although inflammation is involved in the pathogenesis of rhabdomyolysis-induced AKI (RIAKI), little is known about the mechanism that triggers inflammation during RIAKI. Recent evidence has indicated that sterile inflammation triggered by tissue injury can be mediated through multiprotein complexes called the inflammasomes. Therefore, we investigated the role of NLRP3 inflammasomes in the pathogenesis of RIAKI using a glycerol-induced murine rhabdomyolysis model. Inflammasome-related molecules were upregulated in the kidney of RIAKI. Renal tubular injury and dysfunction preceded leukocyte infiltration into the kidney during the early phase of RIAKI, and they were markedly attenuated in mice deficient in NLRP3, ASC, caspase-1, and interleukin (IL)-1β compared with those in wild-type mice. No difference in leukocyte infiltration was observed between wild-type and NLRP3-deficient mice. Furthermore, NLRP3 deficiency strikingly suppressed the expression of renal injury markers and inflammatory cytokines and apoptosis of renal tubular cells. These results demonstrated that NLRP3 inflammasomes contribute to inflammation, apoptosis, and tissue injury during the early phase of RIAKI and provide new insights into the mechanism underlying the pathogenesis of RIAKI.
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50
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Inoue Y, Takahashi M. Comment on "Radiation exposure induces inflammasome pathway activation in immune cells". THE JOURNAL OF IMMUNOLOGY 2015; 194:5039. [PMID: 25980025 DOI: 10.4049/jimmunol.1500381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Yoshiyuki Inoue
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi 329-0498, Japan
| | - Masafumi Takahashi
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi 329-0498, Japan
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