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Zhang J, Wang G, Shi Y, Liu X, Liu S, Chen W, Ning Y, Cao Y, Zhao Y, Li M. Growth differentiation factor 11 regulates high glucose-induced cardiomyocyte pyroptosis and diabetic cardiomyopathy by inhibiting inflammasome activation. Cardiovasc Diabetol 2024; 23:160. [PMID: 38715043 PMCID: PMC11077721 DOI: 10.1186/s12933-024-02258-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 05/01/2024] [Indexed: 05/12/2024] Open
Abstract
BACKGROUND Diabetic cardiomyopathy (DCM) is a crucial complication of long-term chronic diabetes that can lead to myocardial hypertrophy, myocardial fibrosis, and heart failure. There is increasing evidence that DCM is associated with pyroptosis, a form of inflammation-related programmed cell death. Growth differentiation factor 11 (GDF11) is a member of the transforming growth factor β superfamily, which regulates oxidative stress, inflammation, and cell survival to mitigate myocardial hypertrophy, myocardial infarction, and vascular injury. However, the role of GDF11 in regulating pyroptosis in DCM remains to be elucidated. This research aims to investigate the role of GDF11 in regulating pyroptosis in DCM and the related mechanism. METHODS AND RESULTS Mice were injected with streptozotocin (STZ) to induce a diabetes model. H9c2 cardiomyocytes were cultured in high glucose (50 mM) to establish an in vitro model of diabetes. C57BL/6J mice were preinjected with adeno-associated virus 9 (AAV9) intravenously via the tail vein to specifically overexpress myocardial GDF11. GDF11 attenuated pyroptosis in H9c2 cardiomyocytes after high-glucose treatment. In diabetic mice, GDF11 alleviated cardiomyocyte pyroptosis, reduced myocardial fibrosis, and improved cardiac function. Mechanistically, GDF11 inhibited pyroptosis by preventing inflammasome activation. GDF11 achieved this by specifically binding to apoptosis-associated speck-like protein containing a CARD (ASC) and preventing the assembly and activation of the inflammasome. Additionally, the expression of GDF11 during pyroptosis was regulated by peroxisome proliferator-activated receptor α (PPARα). CONCLUSION These findings demonstrate that GDF11 can treat diabetic cardiomyopathy by alleviating pyroptosis and reveal the role of the PPARα-GDF11-ASC pathway in DCM, providing ideas for new strategies for cardioprotection.
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Affiliation(s)
- Jing Zhang
- State Key Laboratory of Reproductive Medicine and Offspring Health, Center for Reproductive Medicine, Institute of Women, Children and Reproductive Health, Shandong University, 250012, Jinan, Shandong, China
- National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, 250012, Jinan, Shandong, China
- Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, 250012, Jinan, Shandong, China
- Shandong Technology Innovation Center for Reproductive Health, 250012, Jinan, Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, 250012, Jinan, Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250012, Jinan, Shandong, China
- Research Unit of Gametogenesis and Health of ART-Offspring, Chinese Academy of Medical Sciences (No. 2021RU001), 250012, Jinan, Shandong, China
| | - Guolong Wang
- State Key Laboratory of Reproductive Medicine and Offspring Health, Center for Reproductive Medicine, Institute of Women, Children and Reproductive Health, Shandong University, 250012, Jinan, Shandong, China
- National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, 250012, Jinan, Shandong, China
- Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, 250012, Jinan, Shandong, China
- Shandong Technology Innovation Center for Reproductive Health, 250012, Jinan, Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, 250012, Jinan, Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250012, Jinan, Shandong, China
- Research Unit of Gametogenesis and Health of ART-Offspring, Chinese Academy of Medical Sciences (No. 2021RU001), 250012, Jinan, Shandong, China
| | - Yuxuan Shi
- State Key Laboratory of Reproductive Medicine and Offspring Health, Center for Reproductive Medicine, Institute of Women, Children and Reproductive Health, Shandong University, 250012, Jinan, Shandong, China
- National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, 250012, Jinan, Shandong, China
- Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, 250012, Jinan, Shandong, China
- Shandong Technology Innovation Center for Reproductive Health, 250012, Jinan, Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, 250012, Jinan, Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250012, Jinan, Shandong, China
- Research Unit of Gametogenesis and Health of ART-Offspring, Chinese Academy of Medical Sciences (No. 2021RU001), 250012, Jinan, Shandong, China
| | - Xin Liu
- State Key Laboratory of Reproductive Medicine and Offspring Health, Center for Reproductive Medicine, Institute of Women, Children and Reproductive Health, Shandong University, 250012, Jinan, Shandong, China
- National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, 250012, Jinan, Shandong, China
- Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, 250012, Jinan, Shandong, China
- Shandong Technology Innovation Center for Reproductive Health, 250012, Jinan, Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, 250012, Jinan, Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250012, Jinan, Shandong, China
- Research Unit of Gametogenesis and Health of ART-Offspring, Chinese Academy of Medical Sciences (No. 2021RU001), 250012, Jinan, Shandong, China
| | - Shuang Liu
- State Key Laboratory of Reproductive Medicine and Offspring Health, Center for Reproductive Medicine, Institute of Women, Children and Reproductive Health, Shandong University, 250012, Jinan, Shandong, China
- National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, 250012, Jinan, Shandong, China
- Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, 250012, Jinan, Shandong, China
- Shandong Technology Innovation Center for Reproductive Health, 250012, Jinan, Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, 250012, Jinan, Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250012, Jinan, Shandong, China
- Research Unit of Gametogenesis and Health of ART-Offspring, Chinese Academy of Medical Sciences (No. 2021RU001), 250012, Jinan, Shandong, China
| | - Wendi Chen
- State Key Laboratory of Reproductive Medicine and Offspring Health, Center for Reproductive Medicine, Institute of Women, Children and Reproductive Health, Shandong University, 250012, Jinan, Shandong, China
- National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, 250012, Jinan, Shandong, China
- Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, 250012, Jinan, Shandong, China
- Shandong Technology Innovation Center for Reproductive Health, 250012, Jinan, Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, 250012, Jinan, Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250012, Jinan, Shandong, China
- Research Unit of Gametogenesis and Health of ART-Offspring, Chinese Academy of Medical Sciences (No. 2021RU001), 250012, Jinan, Shandong, China
| | - Yunna Ning
- State Key Laboratory of Reproductive Medicine and Offspring Health, Center for Reproductive Medicine, Institute of Women, Children and Reproductive Health, Shandong University, 250012, Jinan, Shandong, China
- National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, 250012, Jinan, Shandong, China
- Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, 250012, Jinan, Shandong, China
- Shandong Technology Innovation Center for Reproductive Health, 250012, Jinan, Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, 250012, Jinan, Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250012, Jinan, Shandong, China
- Research Unit of Gametogenesis and Health of ART-Offspring, Chinese Academy of Medical Sciences (No. 2021RU001), 250012, Jinan, Shandong, China
| | - Yongzhi Cao
- State Key Laboratory of Reproductive Medicine and Offspring Health, Center for Reproductive Medicine, Institute of Women, Children and Reproductive Health, Shandong University, 250012, Jinan, Shandong, China
- National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, 250012, Jinan, Shandong, China
- Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, 250012, Jinan, Shandong, China
- Shandong Technology Innovation Center for Reproductive Health, 250012, Jinan, Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, 250012, Jinan, Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250012, Jinan, Shandong, China
- Research Unit of Gametogenesis and Health of ART-Offspring, Chinese Academy of Medical Sciences (No. 2021RU001), 250012, Jinan, Shandong, China
| | - Yueran Zhao
- State Key Laboratory of Reproductive Medicine and Offspring Health, Center for Reproductive Medicine, Institute of Women, Children and Reproductive Health, Shandong University, 250012, Jinan, Shandong, China.
- National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, 250012, Jinan, Shandong, China.
- Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, 250012, Jinan, Shandong, China.
- Shandong Technology Innovation Center for Reproductive Health, 250012, Jinan, Shandong, China.
- Shandong Provincial Clinical Research Center for Reproductive Health, 250012, Jinan, Shandong, China.
- Shandong Key Laboratory of Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250012, Jinan, Shandong, China.
- Research Unit of Gametogenesis and Health of ART-Offspring, Chinese Academy of Medical Sciences (No. 2021RU001), 250012, Jinan, Shandong, China.
| | - Ming Li
- State Key Laboratory of Reproductive Medicine and Offspring Health, Center for Reproductive Medicine, Institute of Women, Children and Reproductive Health, Shandong University, 250012, Jinan, Shandong, China.
- National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, 250012, Jinan, Shandong, China.
- Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, 250012, Jinan, Shandong, China.
- Shandong Technology Innovation Center for Reproductive Health, 250012, Jinan, Shandong, China.
- Shandong Provincial Clinical Research Center for Reproductive Health, 250012, Jinan, Shandong, China.
- Shandong Key Laboratory of Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250012, Jinan, Shandong, China.
- Research Unit of Gametogenesis and Health of ART-Offspring, Chinese Academy of Medical Sciences (No. 2021RU001), 250012, Jinan, Shandong, China.
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Khamis SSS, Lu J, Yi Y, Rao S, Sun W. Pyroptosis-related gene signature for predicting gastric cancer prognosis. Front Oncol 2024; 14:1336734. [PMID: 38571505 PMCID: PMC10990040 DOI: 10.3389/fonc.2024.1336734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Accepted: 02/14/2024] [Indexed: 04/05/2024] Open
Abstract
Gastric cancer (GC) is a prevalent form of malignancy characterized by significant heterogeneity. The development of a specific prediction model is of utmost importance to improve therapy alternatives. The presence of H. pylori can elicit pyroptosis, a notable carcinogenic process. Furthermore, the administration of chemotherapeutic drugs is often employed as a therapeutic approach to addressing this condition. In the present investigation, it was observed that there were variations in the production of 17 pyroptosis-regulating proteins between stomach tissue with tumor development and GC cells. The predictive relevance of each gene associated with pyroptosis was assessed using the cohort from the cancer genome atlas (TCGA). The least absolute shrinkage and selection operator (LASSO) was utilized to enhance the outcomes of the regression approach. Patients with gastric cancer GC in the cohort from the TCGA were categorized into low-risk or high-risk groups based on their gene expression profiles. Patients with a low risk of gastric cancer had a higher likelihood of survival compared to persons classified as high risk (P<0.0001). A subset of patients diagnosed with GC from a Genes Expression Omnibus (GEO) cohort was stratified according to their overall survival (OS) duration. The statistical analysis revealed a higher significance level (P=0.0063) regarding OS time among low-risk individuals. The study revealed that the GC risk score emerged as a significant independent prognostic factor for OS in patients diagnosed with GC. The results of Gene Ontology (GO) and Kyoto Encyclopaedia of Genes and Genomes (KEGG) research revealed that genes associated with a high-risk group had significantly elevated levels of immune system-related activity. Furthermore, it was found that the state of immunity was diminished within this particular group. The relationship between the immune response to cancer and pyroptosis genes is highly interconnected, suggesting that these genes have the potential to serve as prognostic indicators for GC.
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Affiliation(s)
- Salem Saeed Saad Khamis
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jianhua Lu
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yongdong Yi
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Shangrui Rao
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Weijian Sun
- Department of General Surgery, Wenzhou Medical University First Affiliated Hospital, Wenzhou, Zhejiang, China
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Molina-López C, Hurtado-Navarro L, García CJ, Angosto-Bazarra D, Vallejo F, Tapia-Abellán A, Marques-Soares JR, Vargas C, Bujan-Rivas S, Tomás-Barberán FA, Arostegui JI, Pelegrin P. Pathogenic NLRP3 mutants form constitutively active inflammasomes resulting in immune-metabolic limitation of IL-1β production. Nat Commun 2024; 15:1096. [PMID: 38321014 PMCID: PMC10847128 DOI: 10.1038/s41467-024-44990-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 01/11/2024] [Indexed: 02/08/2024] Open
Abstract
Cryopyrin-associated periodic syndrome (CAPS) is an autoinflammatory condition resulting from monoallelic NLRP3 variants that facilitate IL-1β production. Although these are gain-of-function variants characterized by hypersensitivity to cell priming, patients with CAPS and animal models of the disease may present inflammatory flares without identifiable external triggers. Here we find that CAPS-associated NLRP3 variants are forming constitutively active inflammasome, which induce increased basal cleavage of gasdermin D, IL-18 release and pyroptosis, with a concurrent basal pro-inflammatory gene expression signature, including the induction of nuclear receptors 4 A. The constitutively active NLRP3-inflammasome of CAPS is responsive to the selective NLRP3 inhibitor MCC950 and its activation is regulated by deubiquitination. Despite their preactivated state, the CAPS inflammasomes are responsive to activation of the NF-κB pathway. NLRP3-inflammasomes with CAPS-associated variants affect the immunometabolism of the myeloid compartment, leading to disruptions in lipids and amino acid pathways and impaired glycolysis, limiting IL-1β production. In summary, NLRP3 variants causing CAPS form a constitutively active inflammasome inducing pyroptosis and IL-18 release without cell priming, which enables the host's innate defence against pathogens while also limiting IL-1β-dependent inflammatory episodes through immunometabolism modulation.
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Affiliation(s)
- Cristina Molina-López
- Molecular Inflammation Group, Instituto Murciano de Investigación Biosanitaria Pascual Parrilla-IMIB, Murcia, Spain
| | - Laura Hurtado-Navarro
- Molecular Inflammation Group, Instituto Murciano de Investigación Biosanitaria Pascual Parrilla-IMIB, Murcia, Spain
| | - Carlos J García
- Quality, Safety and Bioactivity of Plant-Derived Foods, Centro de Edafología y Biología Aplicada del Segura-Consejo Superior de Investigaciones Científicas (CEBAS-CSIC), Murcia, Spain
| | - Diego Angosto-Bazarra
- Molecular Inflammation Group, Instituto Murciano de Investigación Biosanitaria Pascual Parrilla-IMIB, Murcia, Spain
| | - Fernando Vallejo
- Quality, Safety and Bioactivity of Plant-Derived Foods, Centro de Edafología y Biología Aplicada del Segura-Consejo Superior de Investigaciones Científicas (CEBAS-CSIC), Murcia, Spain
| | - Ana Tapia-Abellán
- Molecular Inflammation Group, Instituto Murciano de Investigación Biosanitaria Pascual Parrilla-IMIB, Murcia, Spain
- Interfaculty Institute for Cell Biology, Department of Immunology, University of Tübingen, Auf der Morgenstelle 15, 72076, Tübingen, Germany
| | | | - Carmen Vargas
- Department of Rheumatology, Hospital Virgen de la Macarena, Sevilla, Spain
| | | | - Francisco A Tomás-Barberán
- Quality, Safety and Bioactivity of Plant-Derived Foods, Centro de Edafología y Biología Aplicada del Segura-Consejo Superior de Investigaciones Científicas (CEBAS-CSIC), Murcia, Spain
| | - Juan I Arostegui
- Department of Immunology, Hospital Clínic, Barcelona, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
- School of Medicine, Universitat de Barcelona, Barcelona, Spain
| | - Pablo Pelegrin
- Molecular Inflammation Group, Instituto Murciano de Investigación Biosanitaria Pascual Parrilla-IMIB, Murcia, Spain.
- Department of Biochemistry and Molecular Biology B and Immunology, Faculty of Medicine, University of Murcia, 30120, Murcia, Spain.
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Xie Z, Zhao M, Yan C, Kong W, Lan F, Zhao S, Yang Q, Bai Z, Qing H, Ni J. Cathepsin B in programmed cell death machinery: mechanisms of execution and regulatory pathways. Cell Death Dis 2023; 14:255. [PMID: 37031185 PMCID: PMC10082344 DOI: 10.1038/s41419-023-05786-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 03/27/2023] [Accepted: 03/29/2023] [Indexed: 04/10/2023]
Abstract
Cathepsin B (CatB), a cysteine protease, is primarily localized within subcellular endosomal and lysosomal compartments. It is involved in the turnover of intracellular and extracellular proteins. Interest is growing in CatB due to its diverse roles in physiological and pathological processes. In functional defective tissues, programmed cell death (PCD) is one of the regulable fundamental mechanisms mediated by CatB, including apoptosis, pyroptosis, ferroptosis, necroptosis, and autophagic cell death. However, CatB-mediated PCD is responsible for disease progression under pathological conditions. In this review, we provide an overview of the critical roles and regulatory pathways of CatB in different types of PCD, and discuss the possibility of CatB as an attractive target in multiple diseases. We also summarize current gaps in the understanding of the involvement of CatB in PCD to highlight future avenues for research.
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Affiliation(s)
- Zhen Xie
- Key Laboratory of Molecular Medicine and Biotherapy, Department of Biology, School of Life Science, Beijing Institute of Technology, 100081, Beijing, China
| | - Mengyuan Zhao
- Key Laboratory of Molecular Medicine and Biotherapy, Department of Biology, School of Life Science, Beijing Institute of Technology, 100081, Beijing, China
| | - Chengxiang Yan
- Research Center for Resource Peptide Drugs, Shaanxi Engineering and Technological Research Center for Conversation and Utilization of Regional Biological Resources, Yan'an University, Yan'an, 716000, China
| | - Wei Kong
- Key Laboratory of Molecular Medicine and Biotherapy, Department of Biology, School of Life Science, Beijing Institute of Technology, 100081, Beijing, China
| | - Fei Lan
- Key Laboratory of Molecular Medicine and Biotherapy, Department of Biology, School of Life Science, Beijing Institute of Technology, 100081, Beijing, China
| | - Shuxuan Zhao
- Key Laboratory of Molecular Medicine and Biotherapy, Department of Biology, School of Life Science, Beijing Institute of Technology, 100081, Beijing, China
| | - Qinghu Yang
- Research Center for Resource Peptide Drugs, Shaanxi Engineering and Technological Research Center for Conversation and Utilization of Regional Biological Resources, Yan'an University, Yan'an, 716000, China
| | - Zhantao Bai
- Research Center for Resource Peptide Drugs, Shaanxi Engineering and Technological Research Center for Conversation and Utilization of Regional Biological Resources, Yan'an University, Yan'an, 716000, China.
- Yan'an Key Laboratory for Neural Immuno-Tumor and Stem Cell and Engineering and Technological Research Center for Natural Peptide Drugs, Yan'an, 716000, China.
| | - Hong Qing
- Key Laboratory of Molecular Medicine and Biotherapy, Department of Biology, School of Life Science, Beijing Institute of Technology, 100081, Beijing, China.
| | - Junjun Ni
- Key Laboratory of Molecular Medicine and Biotherapy, Department of Biology, School of Life Science, Beijing Institute of Technology, 100081, Beijing, China.
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Matsuda T, Takimoto-Ito R, Lipsker D, Kambe N. Similarities and differences in autoinflammatory diseases with urticarial rash, cryopyrin-associated periodic syndrome and Schnitzler syndrome. Allergol Int 2023:S1323-8930(23)00009-6. [PMID: 36906447 DOI: 10.1016/j.alit.2023.02.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Indexed: 03/12/2023] Open
Abstract
Cryopyrin-associated periodic syndromes (CAPS) and Schnitzler syndrome (SchS) are autoinflammatory diseases that present with urticaria-like rashes. CAPS is characterized by periodic or persistent systemic inflammation caused by the dysfunction of the NLRP3 gene. With the advent of IL-1-targeted therapies, the prognosis of CAPS has improved remarkably. SchS is considered an acquired form of autoinflammatory syndrome. Patients with SchS are adults of relatively older age. The pathogenesis of SchS remains unknown and is not associated with the NLRP3 gene. Previously, the p.L265P mutation in the MYD88 gene, which is frequently detected in Waldenström macroglobulinemia (WM) with IgM gammopathy, was identified in several cases of SchS. However, because persistent fever and fatigue are symptoms of WM that require therapeutic intervention, it is a challenge to determine whether these patients truly had SchS or whether advanced WM was misidentified as SchS. There are no established treatments for SchS. The treatment algorithm proposed with the diagnostic criteria is to use colchicine as first-line treatment, and systemic administration of steroids is not recommended due to concerns about side effects. In difficult-to-treat cases, treatment targeting IL-1 is recommended. If targeted IL-1 treatment does not improve symptoms, the diagnosis should be reconsidered. We hope that the efficacy of IL-1 therapy in clinical practice will serve as a stepping stone to elucidate the pathogenesis of SchS, focusing on its similarities and differences from CAPS.
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Affiliation(s)
- Tomoko Matsuda
- Department of Dermatology, Kansai Medical University, Hirakata, Japan
| | - Riko Takimoto-Ito
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Dan Lipsker
- Dermatology Department, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Naotomo Kambe
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan.
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Nisa A, Kipper FC, Panigrahy D, Tiwari S, Kupz A, Subbian S. Different modalities of host cell death and their impact on Mycobacterium tuberculosis infection. Am J Physiol Cell Physiol 2022; 323:C1444-C1474. [PMID: 36189975 PMCID: PMC9662802 DOI: 10.1152/ajpcell.00246.2022] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 09/16/2022] [Accepted: 09/25/2022] [Indexed: 11/22/2022]
Abstract
Mycobacterium tuberculosis (Mtb) is the pathogen that causes tuberculosis (TB), a leading infectious disease of humans worldwide. One of the main histopathological hallmarks of TB is the formation of granulomas comprised of elaborately organized aggregates of immune cells containing the pathogen. Dissemination of Mtb from infected cells in the granulomas due to host and mycobacterial factors induces multiple cell death modalities in infected cells. Based on molecular mechanism, morphological characteristics, and signal dependency, there are two main categories of cell death: programmed and nonprogrammed. Programmed cell death (PCD), such as apoptosis and autophagy, is associated with a protective response to Mtb by keeping the bacteria encased within dead macrophages that can be readily phagocytosed by arriving in uninfected or neighboring cells. In contrast, non-PCD necrotic cell death favors the pathogen, resulting in bacterial release into the extracellular environment. Multiple types of cell death in the PCD category, including pyroptosis, necroptosis, ferroptosis, ETosis, parthanatos, and PANoptosis, may be involved in Mtb infection. Since PCD pathways are essential for host immunity to Mtb, therapeutic compounds targeting cell death signaling pathways have been experimentally tested for TB treatment. This review summarizes different modalities of Mtb-mediated host cell deaths, the molecular mechanisms underpinning host cell death during Mtb infection, and its potential implications for host immunity. In addition, targeting host cell death pathways as potential therapeutic and preventive approaches against Mtb infection is also discussed.
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Affiliation(s)
- Annuurun Nisa
- Public Health Research Institute, New Jersey Medical School, Rutgers University, Newark, New Jersey
| | - Franciele C Kipper
- Center for Vascular Biology Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
- Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Dipak Panigrahy
- Center for Vascular Biology Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
- Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Sangeeta Tiwari
- Department of Biological Sciences, Border Biomedical Research Center (BBRC), University of Texas, El Paso, Texas
| | - Andreas Kupz
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health and Medicine (AITHM), James Cook University, Townsville, Queensland, Australia
| | - Selvakumar Subbian
- Public Health Research Institute, New Jersey Medical School, Rutgers University, Newark, New Jersey
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7
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Nunes PR, Bueno Pereira TO, Bertozzi Matheus M, Grandini NA, Siqueira JS, Correa CR, Abbade JF, Sandrim VC. Glibenclamide Increases Nitric Oxide Levels and Decreases Oxidative Stress in an In Vitro Model of Preeclampsia. Antioxidants (Basel) 2022; 11:antiox11081620. [PMID: 36009339 PMCID: PMC9404919 DOI: 10.3390/antiox11081620] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 08/12/2022] [Accepted: 08/18/2022] [Indexed: 11/16/2022] Open
Abstract
(1) Background: The bioavailability of nitric oxide (NO) and oxidative stress are important events related to the pathophysiology of preeclampsia (PE). In this present study, we aimed to evaluate the antioxidant effect of glibenclamide (GB) on the NO synthesis, oxidative stress, and antioxidant capacity in endothelial cells incubated with plasma from preeclamptic (PE) and normotensive pregnant women (NT). (2) Methods: Human umbilical vein endothelial cells (HUVECs) were incubated with a plasma pool from 10 NT and 10 PE pregnant women; NO/NOx quantification and ROS levels were assessed by a fluorescence compound; lipid peroxidation was evaluated employing thiobarbituric acid (TBA); and total antioxidant capacity was measured by ferric reduction ability power (FRAP) and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT). (3) Results: We found that endothelial cells incubated with plasma from PE showed lower NO and NOx levels compared with the NT group. However, GB treatment increased these levels, as well as the antioxidant capacity. Furthermore, a decrease was observed in ROS generation and lipid peroxidation (4) Conclusions: The GB treatment exerted a positive effect on the NO/NOx production by HUVEC incubated with plasma from NT and PE pregnant women, as well as in the reduction in oxidative stress and increase in the antioxidant capacity.
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Affiliation(s)
- Priscila Rezeck Nunes
- Department of Biophysics and Pharmacology, Institute of Biosciences, Sao Paulo State University (Unesp), Sao Paulo 18618-689, Brazil
- Correspondence:
| | - Thaina Omia Bueno Pereira
- Department of Biophysics and Pharmacology, Institute of Biosciences, Sao Paulo State University (Unesp), Sao Paulo 18618-689, Brazil
| | - Mariana Bertozzi Matheus
- Department of Biophysics and Pharmacology, Institute of Biosciences, Sao Paulo State University (Unesp), Sao Paulo 18618-689, Brazil
| | - Nubia Alves Grandini
- Department of Pathology, Medical School, Sao Paulo State University (Unesp), Sao Paulo 18618-687, Brazil
| | - Juliana Silva Siqueira
- Department of Pathology, Medical School, Sao Paulo State University (Unesp), Sao Paulo 18618-687, Brazil
| | - Camila Renata Correa
- Department of Pathology, Medical School, Sao Paulo State University (Unesp), Sao Paulo 18618-687, Brazil
| | - Joelcio Francisco Abbade
- Department of Gynecology and Obstetrics, Medical School, Sao Paulo State University (Unesp), Sao Paulo 18618-687, Brazil
| | - Valeria Cristina Sandrim
- Department of Biophysics and Pharmacology, Institute of Biosciences, Sao Paulo State University (Unesp), Sao Paulo 18618-689, Brazil
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8
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Wang X, Xu X, Wu P, Wu M, Gan L, Jin J, Wu R, Liu W, Zhang K, Li D, Zheng X. Complanatuside alleviates inflammatory cell damage induced by pro-inflammatory cytokines in skin keratinocytes. Front Chem 2022; 10:909651. [PMID: 36034662 PMCID: PMC9399639 DOI: 10.3389/fchem.2022.909651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 06/27/2022] [Indexed: 12/03/2022] Open
Abstract
Cytokine-mediated inflammatory response is considered a cause of skin lesion in COVID-19 patients. Complanatuside is a flavonol glycoside isolated from Astragalus complanatus. Flavonoids from Astragalus complanatus were reported to have anti-inflammatory and anticancer activities but the potential protective effect of complanatuside on cytokine-induced inflammatory damage in skin keratinocytes is not known. The aim of this study is to explore the inhibitory effect of complanatuside on inflammation and its underlying mechanisms in skin epithelial HaCaT cells treated with inflammatory cytokines. The combination of IFN-γ, TNF-α, and IL-6 decreased cell viability, increased cell death, and pyroptosis in HaCaT cells. Treatment with complanatuside alleviated the effects of the cytokine combination on HaCaT cells. Complanatuside down-regulated pyroptosis related to NLRP3, GSDMD, and ASC. The effects of complanatuside were related to vast reductions in the levels of iNOS, COX-2, and ROS. Results of the present study indicate that complanatuside inhibited inflammation and protected the cells from inflammatory cell damage in HaCaT cells treated with the combination of IFN-γ, TNF-α, and IL-6. Complanatuside may be a promising candidate for inhibiting COVID-19 related skin inflammatory damage.
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Affiliation(s)
- Xiao Wang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen City, China
| | - Xuetao Xu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen City, China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen, China
| | - Panpan Wu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen City, China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen, China
| | - Mengshuo Wu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen City, China
| | - Lishe Gan
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen City, China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen, China
| | - Jingwei Jin
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen City, China
| | - Rihui Wu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen City, China
| | - Wenfeng Liu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen City, China
| | - Kun Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen City, China
| | - Dongli Li
- International Healthcare Innovation Institute (Jiangmen), Jiangmen, China
- *Correspondence: Dongli Li, ; Xi Zheng,
| | - Xi Zheng
- Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, the State University of New Jersey, Piscataway, NJ, United States
- *Correspondence: Dongli Li, ; Xi Zheng,
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9
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Tian D, Xing Y, Gao W, Zhang H, Song Y, Tian Y, Dai Z. Sevoflurane Aggravates the Progress of Alzheimer’s Disease Through NLRP3/Caspase-1/Gasdermin D Pathway. Front Cell Dev Biol 2022; 9:801422. [PMID: 35127716 PMCID: PMC8807556 DOI: 10.3389/fcell.2021.801422] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 12/17/2021] [Indexed: 11/21/2022] Open
Abstract
Background: Alzheimer’s disease (AD) is the most common form of dementia worldwide. Previous studies have reported that sevoflurane, a frequently used anesthetic, can induce cognitive impairment in preclinical and clinical settings. However, the mechanism underlying the development of this neurotoxicity is currently unclear. Methods: Seven-month-old APP/PS1 mice were placed in an anesthesia induction box containing 3% sevoflurane in 100% O2 for 6 h, while BV2 cells were cultured with 4% sevoflurane for 6 h. Pyroptosis and tau protein expression in excised hippocampus tissues and cells were measured using Western blotting and immunofluorescence assay. Caspase-1 and NLRP3 were knocked out in BV2 microglia using CRISPR/Cas9 technology to determine whether they mediate the effects induced by sevoflurane. Results: Sevoflurane directly activated caspase-1 to induce pyroptosis in the mouse model of AD via NLRP3 and AIM2 activation. In addition, sevoflurane mediated cleavage of gasdermin D (GSDMD) but not gasdermin E (GSDME), promoted the biosynthesis of downstream interleukin-1β and interleukin-18, and increased β-amyloid (Aβ) deposition and tau phosphorylation. The nontoxic caspase-1 small-molecule inhibitor VX-765 significantly inhibited this activation process in microglia, while NLRP3 deletion suppressed sevoflurane-induced caspase-1 cleavage and subsequently pyroptosis, as well as tau pathology. Furthermore, silencing caspase-1 alleviated the sevoflurane-induced release of IL-1β and IL-18 and inhibited tau-related enzymes in microglia. Conclusion: This study is the first to report that clinical doses of sevoflurane aggravate the progression of AD via the NLRP3/caspase-1/GSDMD axis. Collectively, our findings elucidate the crucial mechanisms of NLRP3/caspase-1 in pyroptosis and tau pathogenesis induced by sevoflurane and suggest that VX-765 could represent a novel therapeutic intervention for treating AD.
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Affiliation(s)
- Di Tian
- Department of Anesthesiology, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University), Shenzhen, China
- Department of Anesthesiology, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, China
- Shenzhen Engineering Research Center of Anesthesiology, Shenzhen, China
| | - Yanmei Xing
- Department of Anesthesiology, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University), Shenzhen, China
- Department of Anesthesiology, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, China
- Shenzhen Engineering Research Center of Anesthesiology, Shenzhen, China
| | - Wenli Gao
- Department of Anesthesiology, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University), Shenzhen, China
- Department of Anesthesiology, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, China
- Shenzhen Engineering Research Center of Anesthesiology, Shenzhen, China
| | - Hongyan Zhang
- Department of Anesthesiology, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, China
- Shenzhen Engineering Research Center of Anesthesiology, Shenzhen, China
| | - Yifeng Song
- Department of Anesthesiology, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University), Shenzhen, China
- Shenzhen Engineering Research Center of Anesthesiology, Shenzhen, China
| | - Ya Tian
- Department of Anesthesiology, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University), Shenzhen, China
- Shenzhen Engineering Research Center of Anesthesiology, Shenzhen, China
| | - Zhongliang Dai
- Department of Anesthesiology, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University), Shenzhen, China
- Department of Anesthesiology, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, China
- Shenzhen Engineering Research Center of Anesthesiology, Shenzhen, China
- *Correspondence: Zhongliang Dai,
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10
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Zheng W, Liu B, Shi E. Perillaldehyde Alleviates Spinal Cord Ischemia-Reperfusion Injury Via Activating the Nrf2 Pathway. J Surg Res 2021; 268:308-317. [PMID: 34399353 DOI: 10.1016/j.jss.2021.06.055] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 05/31/2021] [Accepted: 06/11/2021] [Indexed: 12/22/2022]
Abstract
BACKGROUND Spinal Cord ischemia-reperfusion injury (SCII) is one of the most destructive complications in thoracic-abdominal aortic surgery, which can cause physical abnormalities, paralysis and even brain death. Evidence has shown that perillaldehyde (PAH) can ameliorate rat's cerebra ischemia-reperfusion injury. However, the effect of PAH on SCII remains unknown. METHODS The current study established SCII rat models and oxygen and glucose deprivation/reoxygenation-induced BV2 microglia models to explore whether PAH could alleviate SCII symptoms and to investigate underlying mechanism. RESULTS SCII rats underwent severe neurologic motor dysfunction and histopathologic injury compared with the normal rats, which are exhibited by loss of motor neurons and decrease of nissl bodies. Treatment with PAH significantly ameliorated motor dysfunction and neuron damage. PAH downregulated the expression of NLR family pyrin domain containing 3, cleaved/pro caspase-1, interleukin-1β and interleukin-18 in spinal cord tissues of SCII rats. Besides, the contents of oxidative stress-related factors superoxide dismutase, manganese-dependent superoxide dismutase, catalase and glutathione peroxidase were significantly increased and malondialdehyde content was decreased after PAH treatment. PAH treatment upregulated the expression of nuclear factor-E2-related factor 2 and heme oxygenase-1 in spinal cord tissues of SCII rats. Our in vitro study confirmed that PAH inhibited microglial activation by activating the nuclear factor-E2-related factor 2/heme oxygenase-1 pathway, exhibited by alleviated inflammation and oxidative stress. CONCLUSIONS This study elucidates that PAH has the potential value for treating SCII, which provides an experimental basis for clinical trials in the future.
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Affiliation(s)
- Wenjun Zheng
- Department of Cardiac Surgery, The First Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China; Department of Cardiac Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, People's Republic of China
| | - Bing Liu
- Department of Cardiac Surgery, The First Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China; Department of Vascular Surgery, The Second Hospital of Dalian Medical University, Dalian, Liaoning, People's Republic of China
| | - Enyi Shi
- Department of Cardiac Surgery, The First Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China.
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11
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Tamai R, Mashima I, Kiyoura Y. Alendronate Augments Lipid A-Induced IL-1α Release via Activation of ASC but Not Caspase-11. Inflammation 2021; 44:2132-2141. [PMID: 34080091 DOI: 10.1007/s10753-021-01489-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 05/10/2021] [Accepted: 05/24/2021] [Indexed: 11/26/2022]
Abstract
Nitrogen-containing bisphosphonates (NBPs), such as alendronate (ALN), are anti-bone-resorptive drugs that have inflammatory side effects. We previously reported that ALN augmented lipid A-induced interleukin (IL)-1β production and NOD-like receptor pyrin domain-containing-3 (NLRP3)/apoptosis-associated speck-like protein containing a CARD (ASC)-dependent cell death. The present study aimed to examine whether ALN augments lipid A-induced IL-1α release and necroptosis, which is induced by the activation of receptor-interacting protein kinase (RIPK) 3. Treatment of J774.1 cells with ALN augmented lipid A-induced IL-1α release, which was not inhibited by Ac-IETD-CHO, a caspase-8 inhibitor. ALN also activated mixed lineage kinase domain-like (MLKL), a key mediator of the necroptosis pathway, and upregulated the expression of caspase-11, a lipid A receptor. GSK'872, a RIPK3 inhibitor, suppressed the ALN-upregulated expression of caspase-11 and augmented lipid A-induced caspase-8 activation. Moreover, ALN induced the release of NLRP3 and ASC into culture supernatants. GSK'872, but not Ac-IETD-CHO, reduced the ALN-induced release of NLRP3, but not ASC, into culture supernatants, and reduced ALN-induced cell death, but not ALN-induced LDH release. Antibodies against NLRP3 and ASC upregulated caspase-11 expression in the cytosol by inhibiting ALN-induced cell death. However, pretreating cells with an antibody against ASC, but not NLRP3, before ALN addition also inhibited lipid A-induced IL-1α release. Pretreating cells with an antibody against caspase-11 before the addition of ALN or lipid A did not downregulate lipid A-induced production of IL-1α. Taken together, our findings suggest that ALN augments lipid A-induced IL-1α release via activation of ASC, but not caspase-11.
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Affiliation(s)
- Riyoko Tamai
- Department of Oral Medical Science, Ohu University School of Dentistry, 31-1 Misumido, Tomitamachi, Koriyama, Fukushima, 963-8611, Japan.
| | - Izumi Mashima
- Department of Oral Medical Science, Ohu University School of Dentistry, 31-1 Misumido, Tomitamachi, Koriyama, Fukushima, 963-8611, Japan
| | - Yusuke Kiyoura
- Department of Oral Medical Science, Ohu University School of Dentistry, 31-1 Misumido, Tomitamachi, Koriyama, Fukushima, 963-8611, Japan
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12
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Ranéia E Silva PA, de Lima DS, Mesquita Luiz JP, Câmara NOS, Alves-Filho JCF, Pontillo A, Bortoluci KR, Faquim-Mauro EL. Inflammatory effect of Bothropstoxin-I from Bothrops jararacussu venom mediated by NLRP3 inflammasome involves ATP and P2X7 receptor. Clin Sci (Lond) 2021; 135:687-701. [PMID: 33620070 DOI: 10.1042/cs20201419] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 02/22/2021] [Accepted: 02/23/2021] [Indexed: 12/12/2022]
Abstract
Muscle tissue damage is one of the local effects described in bothropic envenomations. Bothropstoxin-I (BthTX-I), from Bothrops jararacussu venom, is a K49-phospholipase A2 (PLA2) that induces a massive muscle tissue injury, and, consequently, local inflammatory reaction. The NLRP3 inflammasome is a sensor that triggers inflammation by activating caspase 1 and releasing interleukin (IL)-1β and/or inducing pyroptotic cell death in response to tissue damage. We, therefore, aimed to address activation of NLRP3 inflammasome by BthTX-I-associated injury and the mechanism involved in this process. Intramuscular injection of BthTX-I results in infiltration of neutrophils and macrophages in gastrocnemius muscle, which is reduced in NLRP3- and Caspase-1-deficient mice. The in vitro IL-1β production induced by BthTX-I in peritoneal macrophages (PMs) requires caspase 1/11, ASC and NLRP3 and is dependent on adenosine 5'-triphosphate (ATP)-induced K+ efflux and P2X7 receptor (P2X7R). BthTX-I induces a dramatic release of ATP from C2C12 myotubes, therefore representing the major mechanism for P2X7R-dependent inflammasome activation in macrophages. A similar result was obtained when human monocyte-derived macrophages (HMDMs) were treated with BthTX-I. These findings demonstrated the inflammatory effect of BthTX-I on muscle tissue, pointing out a role for the ATP released by damaged cells for the NLRP3 activation on macrophages, contributing to the understanding of the microenvironment of the tissue damage of the Bothrops envenomation.
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Affiliation(s)
- Priscila Andrade Ranéia E Silva
- Laboratory of Immunopathology, Butantan Institute, São Paulo, Brazil
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, Sao Paulo, Brazil
| | - Dhêmerson Souza de Lima
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, Sao Paulo, Brazil
| | - João Paulo Mesquita Luiz
- Department of Pharmacology and Department of Immunology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | | | - José Carlos Farias Alves-Filho
- Department of Pharmacology and Department of Immunology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Alessandra Pontillo
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, Sao Paulo, Brazil
| | - Karina Ramalho Bortoluci
- Department of Biological Sciences and Center for Cellular and Molecular Therapy (CTC-Mol),Federal University of São Paulo, São Paulo, Brazil
| | - Eliana L Faquim-Mauro
- Laboratory of Immunopathology, Butantan Institute, São Paulo, Brazil
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, Sao Paulo, Brazil
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13
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Sebastian-Valverde M, Wu H, Al Rahim M, Sanchez R, Kumar K, De Vita RJ, Pasinetti GM. Discovery and characterization of small-molecule inhibitors of NLRP3 and NLRC4 inflammasomes. J Biol Chem 2021; 296:100597. [PMID: 33781745 PMCID: PMC8095128 DOI: 10.1016/j.jbc.2021.100597] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 03/17/2021] [Accepted: 03/25/2021] [Indexed: 12/20/2022] Open
Abstract
Inflammasomes are macromolecular complexes involved in the host response to external and endogenous danger signals. Inflammasome-mediated sterile inflammation plays a central role in several human conditions such as autoimmune diseases, type-2 diabetes, and neurodegenerative disorders, indicating inflammasomes could be appealing therapeutic targets. Previous work has demonstrated that inhibiting the ATPase activity of the nucleotide-binding oligomerization domain, leucine-rich repeat and pyrin domain-containing protein 3 (NLRP3), disrupts inflammasome assembly and function. However, there is a necessity to find new potent compounds with therapeutic potential. Here we combine computational modeling of the target and virtual screening to discover a group of novel compounds predicted to inhibit NLRP3. We characterized the best compounds and determined their potency, specificity, and ability to inhibit processes downstream from NLRP3 activation. Moreover, we analyzed in mice the competence of a lead candidate to reduce lipopolysaccharide-induced inflammation. We also validated the active pharmacophore shared among all the NLRP3 inhibitors, and through computational docking, we clarify key structural features for compound positioning within the inflammasome ATP-binding site. Our study sets the basis for rational design and optimization of inflammasome-targeting probes and drugs.
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Affiliation(s)
| | - Henry Wu
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Md Al Rahim
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Roberto Sanchez
- Drug Discovery Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA; Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Kunal Kumar
- Drug Discovery Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA; Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Robert J De Vita
- Drug Discovery Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA; Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Giulio Maria Pasinetti
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, New York, USA; James J. Peters Veterans Affairs Medical Center, Bronx, New York, USA.
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Protective Role of Coenzyme Q10 in Acute Sepsis-Induced Liver Injury in BALB/c Mice. BIOMED RESEARCH INTERNATIONAL 2021; 2020:7598375. [PMID: 33381582 PMCID: PMC7762638 DOI: 10.1155/2020/7598375] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 12/02/2020] [Accepted: 12/07/2020] [Indexed: 11/18/2022]
Abstract
Sepsis increases the risk of the liver injury development. According to the research works, coenzyme Q10 exhibits hepatoprotective properties in vivo as well as in vitro. Current work aimed at investigating the protective impacts of coenzyme Q10 against liver injury in septic BALB/c mice. The male BALB/c mice were randomly segregated into 4 groups: the control group, the coenzyme Q10 treatment group, the puncture and cecal ligation group, and the coenzyme Q10+cecal ligation and puncture group. Cecal ligation and puncture was conducted after gavagaging the mice with coenzyme Q10 during two weeks. Following 48 h postcecal ligation and puncture, we estimated hepatic biochemical parameters and histopathological changes in hepatic tissue. We evaluated the expression of factors associated with autophagy, pyroptosis, and inflammation. Findings indicated that coenzyme Q10 decreased the plasma levels in alkaline phosphatase, alanine aminotransferase, and aspartate aminotransferase in the cecal ligation and puncture group. Coenzyme Q10 significantly inhibited the elevation of sequestosome-1, interleukin-1β, oligomerization domain-like receptor 3 and nucleotide-binding, interleukin-6, and tumor necrosis factor-α expression levels; coenzyme Q10 also increased beclin 1 levels. Coenzyme Q10 might be a significant agent in the treatment of liver injury induced by sepsis.
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15
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Cao F, Wu K, Zhu YZ, Bao ZW. Roles and Mechanisms of Dipeptidyl Peptidase 4 Inhibitors in Vascular Aging. Front Endocrinol (Lausanne) 2021; 12:731273. [PMID: 34489872 PMCID: PMC8416540 DOI: 10.3389/fendo.2021.731273] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Accepted: 07/21/2021] [Indexed: 12/22/2022] Open
Abstract
Vascular aging is characterized by alterations in the constitutive properties and biological functions of the blood vessel wall. Endothelial cells (ECs) and vascular smooth muscle cells (VSMCs) are indispensability elements in the inner layer and the medial layer of the blood vessel wall, respectively. Dipeptidyl peptidase-4 (DPP4) inhibitors, as a hypoglycemic agent, play a protective role in reversing vascular aging regardless of their effects in meliorating glycemic control in humans and animal models of type 2 diabetes mellitus (T2DM) through complex cellular mechanisms, including improving EC dysfunction, promoting EC proliferation and migration, alleviating EC senescence, obstructing EC apoptosis, suppressing the proliferation and migration of VSMCs, increasing circulating endothelial progenitor cell (EPC) levels, and preventing the infiltration of mononuclear macrophages. All of these showed that DPP4 inhibitors may exert a positive effect against vascular aging, thereby preventing vascular aging-related diseases. In the current review, we will summarize the cellular mechanism of DPP4 inhibitors regulating vascular aging; moreover, we also intend to compile the roles and the promising therapeutic application of DPP4 inhibitors in vascular aging-related diseases.
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Affiliation(s)
- Fen Cao
- Department of Cardiology, Huaihua First People’s Hospital, Huaihua, China
| | - Kun Wu
- Department of Neurology, Huaihua First People’s Hospital, Huaihua, China
| | - Yong-Zhi Zhu
- Department of Cardiology, Huaihua First People’s Hospital, Huaihua, China
| | - Zhong-Wu Bao
- Department of Cardiology, Huaihua First People’s Hospital, Huaihua, China
- *Correspondence: Zhong-Wu Bao,
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16
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Zhang T, Wang H, Lu M, Zhao K, Yin J, Liu Y, Sun Y. Astragaloside IV prevents myocardial hypertrophy induced by mechanical stress by activating autophagy and reducing inflammation. Am J Transl Res 2020; 12:5332-5342. [PMID: 33042423 PMCID: PMC7540164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 08/01/2020] [Indexed: 06/11/2023]
Abstract
AIMS The aim of the present study was to investigate the effects of astragaloside IV (As-IV) on mechanical stress-induced myocardial hypertrophy, with a focus on autophagy and inflammation. METHODS A rat cardiac hypertrophy model was established by narrowing the abdominal aorta, and a cell hypertrophy model was established by mechanically stretching primary cardiomyocytes. Cardiac function index and cardiac hypertrophy were measured by echocardiography, heart weight index (HWI) and left ventriculus weight index (LVWI) in vivo. Cell size was measured by phalloidin-tetramethyl treatment in vitro, while hematoxylin and eosin (HE) staining was used to observe the arrangement and morphology of myocardial cells. The expression of ANP, BNP, LC3II, p62, NLRP3, and IL-1β in both myocardial tissue and cardiomyocytes was assessed by Western blot, while TNF-α and IL-18 levels in serum and cell supernatants were measured by ELISA. RESULTS In the aortic banding model, the cardiac function index LVEF was decreased; the hypertrophy indexes LVPWd, LVPWs, IVSd and IVSs were significantly increased; cardiomyocytes were enlarged and disordered; the expression levels of ANP, BNP, NLRP3, IL-1β and p62 were increased; and LC3II expression was decreased in both myocardial tissue and cardiomyocytes. As-IV could significantly improve cardiac function and cardiomyocyte morphology and limit hypertrophy, thereby protecting damaged hearts, while rapamycin had a similar effect as As-IV. In addition, As-IV decreased the expression of NLRP3 and IL-1β and activated autophagy, as evidenced by increased LC3II expression and decreased p62 levels. CONCLUSION As-IV prevents myocardial hypertrophy induced by mechanical stress by activating autophagy and reducing inflammation.
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Affiliation(s)
- Tong Zhang
- Key Laboratory of Cardiovascular and Cerebrovascular Drug Research of Liaoning Province, Jinzhou Medical UniversityJinzhou 121001, China
| | - Hongxin Wang
- Key Laboratory of Cardiovascular and Cerebrovascular Drug Research of Liaoning Province, Jinzhou Medical UniversityJinzhou 121001, China
| | - Meili Lu
- Key Laboratory of Cardiovascular and Cerebrovascular Drug Research of Liaoning Province, Jinzhou Medical UniversityJinzhou 121001, China
| | - Kun Zhao
- Key Laboratory of Cardiovascular and Cerebrovascular Drug Research of Liaoning Province, Jinzhou Medical UniversityJinzhou 121001, China
- The First Affiliated Hospital of Jinzhou Medical UniversityJinzhou 121001, China
| | - Jiawei Yin
- Key Laboratory of Cardiovascular and Cerebrovascular Drug Research of Liaoning Province, Jinzhou Medical UniversityJinzhou 121001, China
| | - Yang Liu
- Key Laboratory of Cardiovascular and Cerebrovascular Drug Research of Liaoning Province, Jinzhou Medical UniversityJinzhou 121001, China
- The First Affiliated Hospital of Jinzhou Medical UniversityJinzhou 121001, China
| | - Yang Sun
- Key Laboratory of Cardiovascular and Cerebrovascular Drug Research of Liaoning Province, Jinzhou Medical UniversityJinzhou 121001, China
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17
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van den Berg DF, Te Velde AA. Severe COVID-19: NLRP3 Inflammasome Dysregulated. Front Immunol 2020; 11:1580. [PMID: 32670297 PMCID: PMC7332883 DOI: 10.3389/fimmu.2020.01580] [Citation(s) in RCA: 153] [Impact Index Per Article: 38.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 06/15/2020] [Indexed: 01/08/2023] Open
Abstract
SARS-CoV-2 might directly activate NLRP3 inflammasome resulting in an endogenous adjuvant activity necessary to mount a proper adaptive immune response against the virus. Heterogeneous response of COVID-19 patients could be attributed to differences in not being able to properly downregulate NLRP3 inflammasome activation. This relates to the fitness of the immune system of the individual challenged by the virus. Patients with a reduced immune fitness can demonstrate a dysregulated NLRP3 inflammasome activity resulting in severe COVID-19 with tissue damage and a cytokine storm. We sketch the outlines of five possible scenarios for COVID-19 in medical practice and provide potential treatment options targeting dysregulated endogenous adjuvant activity in severe COVID-19 patients.
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Affiliation(s)
- Daan F van den Berg
- Amsterdam UMC, Academic Medical Center, Tytgat Institute for Liver and Intestinal Research, Amsterdam Gastroenterology, Endocrinology and Metabolism, Amsterdam, Netherlands
| | - Anje A Te Velde
- Amsterdam UMC, Academic Medical Center, Tytgat Institute for Liver and Intestinal Research, Amsterdam Gastroenterology, Endocrinology and Metabolism, Amsterdam, Netherlands
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18
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Wang W, Tan J, Wang Z, Zhang Y, Liu Q, Yang D. Characterization of the inflammasome component SmASC in turbot (Scophthalmus maximus). FISH & SHELLFISH IMMUNOLOGY 2020; 100:324-333. [PMID: 32198069 DOI: 10.1016/j.fsi.2020.03.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 02/29/2020] [Accepted: 03/16/2020] [Indexed: 06/10/2023]
Abstract
Apoptosis-associated speck-like protein containing a C-terminal caspase recruit domain (ASC) is an important adapter protein in the inflammasome complex that mediates inflammatory caspase activation and host innate immunity in mammals. However, the function of inflammasome components in lower vertebrate remains poorly understood. In this study, full length of SmASC was cloned from turbot (Scophthalmus maximus). Through bioinformatic analysis, we found that SmASC shares relatively high identity with ASC in bony fish. Furthermore, we found that the intact SmASC can form an oligomeric speck-like structure, while the PYD segment of SmASC can form the filamentous structure. Moreover, expression of SmASC was induced after intraperitoneal injection of Edwardsiella piscicida (E. piscicida) in vivo. To further explore the role of SmASC during infection, we constructed SmASC knockdown and overexpression models by administration of siRNA and overexpression plasmids in vivo, respectively. Expression of SmASC decreased the propagation of E. piscicida in different immune organs. In summary, our results characterize the function of SmASC in S. maximus, suggesting that the SmASC plays a critical role in turbot immune responses.
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Affiliation(s)
- Wenhui Wang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Jinchao Tan
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Zhuang Wang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Yuanxing Zhang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China; Shanghai Engineering Research Center of Maricultured Animal Vaccines, Shanghai, 200237, China
| | - Qin Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China; Shanghai Engineering Research Center of Maricultured Animal Vaccines, Shanghai, 200237, China
| | - Dahai Yang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China; Shanghai Engineering Research Center of Maricultured Animal Vaccines, Shanghai, 200237, China.
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19
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Aizawa E, Karasawa T, Watanabe S, Komada T, Kimura H, Kamata R, Ito H, Hishida E, Yamada N, Kasahara T, Mori Y, Takahashi M. GSDME-Dependent Incomplete Pyroptosis Permits Selective IL-1α Release under Caspase-1 Inhibition. iScience 2020; 23:101070. [PMID: 32361594 PMCID: PMC7200307 DOI: 10.1016/j.isci.2020.101070] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 03/11/2020] [Accepted: 04/09/2020] [Indexed: 01/26/2023] Open
Abstract
Pyroptosis is a form of regulated cell death that is characterized by gasdermin processing and increased membrane permeability. Caspase-1 and caspase-11 have been considered to be essential for gasdermin D processing associated with inflammasome activation. In the present study, we found that NLRP3 inflammasome activation induces delayed necrotic cell death via ASC in caspase-1/11-deficient macrophages. Furthermore, ASC-mediated caspase-8 activation and subsequent gasdermin E processing are necessary for caspase-1-independent necrotic cell death. We define this necrotic cell death as incomplete pyroptosis because IL-1β release, a key feature of pyroptosis, is absent, whereas IL-1α release is induced. Notably, unprocessed pro-IL-1β forms a molecular complex to be retained inside pyroptotic cells. Moreover, incomplete pyroptosis accompanied by IL-1α release is observed under the pharmacological inhibition of caspase-1 with VX765. These findings suggest that caspase-1 inhibition during NLRP3 inflammasome activation modulates forms of cell death and permits the release of IL-1α from dying cells. NLRP3 inflammasome induces necrotic cell death in the absence of caspase-1/11 ASC initiates GSDME-dependent pyroptosis via caspase-8 IL-1α, but not IL-1β, is released during Casp1/11-independent pyroptosis Pharmacological inhibition of caspase-1 permits IL-1α release during pyroptosis
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Affiliation(s)
- Emi Aizawa
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi 329-0498, Japan; Department of Dentistry, Oral and Maxillofacial Surgery, Jichi Medical University, Tochigi, Japan
| | - Tadayoshi Karasawa
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi 329-0498, Japan.
| | - Sachiko Watanabe
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi 329-0498, Japan
| | - Takanori Komada
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi 329-0498, Japan
| | - Hiroaki Kimura
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi 329-0498, Japan
| | - Ryo Kamata
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi 329-0498, Japan
| | - Homare Ito
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi 329-0498, Japan
| | - Erika Hishida
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi 329-0498, Japan
| | - Naoya Yamada
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi 329-0498, Japan
| | - Tadashi Kasahara
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi 329-0498, Japan
| | - Yoshiyuki Mori
- Department of Dentistry, Oral and Maxillofacial Surgery, Jichi Medical University, Tochigi, Japan
| | - Masafumi Takahashi
- Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi 329-0498, Japan.
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20
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Vinaik R, Abdullahi A, Barayan D, Jeschke MG. NLRP3 inflammasome activity is required for wound healing after burns. Transl Res 2020; 217:47-60. [PMID: 31843468 PMCID: PMC7036017 DOI: 10.1016/j.trsl.2019.11.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 11/25/2019] [Accepted: 11/25/2019] [Indexed: 12/11/2022]
Abstract
Survival of burn patients is contingent on effective wound healing, a complex process that requires coordinated responses of myeloid cells and inflammatory pathways. NLRP3, which serves as a platform for secretion of proinflammatory cytokines, is implicated as a central regulator of wound healing. However, its role during the acute dermal and epidermal regeneration in the context of burns is unknown. Wild-type (WT) and NLRP3-/- mice were exposed to a 30% TBSA scald burn. Gene expression was conducted via real-time polymerase chain reaction. Trichrome staining was used to assess collagen deposition and granulation tissue formation. F4/80 immunostaining compared macrophage infiltration. Flow cytometric analysis was used to characterize skin macrophage distribution and profile. NLRP3, IL1β and IL18 expression was upregulated in skin after burn, and these changes were nonexistent in NLRP3-/-. NLRP3-/- had decreased expression of proinflammatory cytokines, chemokines, inflammatory markers, and growth factors at 3 days (P < 0.05). NLRP3-/- burn skin demonstrated significantly less macrophage infiltration and higher expression of anti-inflammatory markers Arg1 and Fizz1 (P < 0.05) compared to WT. Trichrome staining showed decreased collagen deposition compared to WT. We show that NLRP3 is protective in burn wound healing, primarily through production of inflammatory mediators, macrophage recruitment, and polarization to a proinflammatory phenotype. Our findings highlight a central role of NLRP3 in wound healing through regulation of inflammation and macrophage polarization after burns.
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Affiliation(s)
| | | | | | - Marc G Jeschke
- Department of Surgery, Division of Plastic Surgery, University of Toronto, Toronto, Canada; Department of Immunology, University of Toronto, Toronto, Canada; Ross Tilley Burn Centre, Sunnybrook Health Sciences Centre, Toronto, Canada; Sunnybrook Research Institute, Toronto, Canada.
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21
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Toupin NP, Arora K, Shrestha P, Peterson JA, Fischer LJ, Rajagurubandara E, Podgorski I, Winter AH, Kodanko JJ. BODIPY-Caged Photoactivated Inhibitors of Cathepsin B Flip the Light Switch on Cancer Cell Apoptosis. ACS Chem Biol 2019; 14:2833-2840. [PMID: 31750642 PMCID: PMC9885843 DOI: 10.1021/acschembio.9b00711] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Acquired resistance to apoptotic agents is a long-standing challenge in cancer treatment. Cathepsin B (CTSB) is an enzyme which, among many essential functions, promotes apoptosis during cellular stress through regulation of intracellular proteolytic networks on the minute time scale. Recent data indicate that CTSB inhibition may be a promising method to steer cells away from apoptotic death toward necrosis, a mechanism of cell death that can overcome resistance to apoptotic agents, stimulate an immune response and promote antitumor immunity. Unfortunately, rapid and selective intracellular inactivation of CTSB has not been possible. However, here we report on the synthesis and characterization of photochemical and biological properties of BODIPY-caged inhibitors of CTSB that are cell permeable, highly selective and activated rapidly upon exposure to visible light. Intriguingly, these compounds display tunable photophysical and biological properties based on substituents bound directly to boron. Me2BODIPY-caged compound 8 displays the dual-action capability of light-accelerated CTSB inhibition and singlet oxygen production from a singular molecular entity. The dual-action capacity of 8 leads to a rapid necrotic response in MDA-MB-231 triple negative breast cancer cells with high phototherapeutic indexes (>30) and selectivity vs noncancerous cells that neither CTSB inhibition nor photosensitization gives alone. Our work confirms that singlet oxygen production and CTSB inactivation is highly synergistic and a promising method for killing cancer cells. Furthermore, this ability to trigger intracellular inactivation of CTSB with light provides researchers with a powerful photochemical tool for probing biochemical processes on short time scales.
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Affiliation(s)
- Nicholas P. Toupin
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - Karan Arora
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - Pradeep Shrestha
- Department of Chemistry, Iowa State University, Ames, Iowa 50014, United States
| | - Julie A. Peterson
- Department of Chemistry, Iowa State University, Ames, Iowa 50014, United States
| | - Logan J. Fischer
- Department of Chemistry, Iowa State University, Ames, Iowa 50014, United States
| | - Erandi Rajagurubandara
- Department of Pharmacology, School of Medicine, Wayne State University, Detroit, Michigan 48201, United States
| | - Izabela Podgorski
- Barbara Ann Karmanos Cancer Institute, Detroit, Michigan 48201, United States,Department of Pharmacology, School of Medicine, Wayne State University, Detroit, Michigan 48201, United States
| | - Arthur H. Winter
- Department of Chemistry, Iowa State University, Ames, Iowa 50014, United States,Corresponding Authors: .
| | - Jeremy J. Kodanko
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States,Barbara Ann Karmanos Cancer Institute, Detroit, Michigan 48201, United States,Corresponding Authors: .
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22
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Nirmala JG, Lopus M. Cell death mechanisms in eukaryotes. Cell Biol Toxicol 2019; 36:145-164. [PMID: 31820165 DOI: 10.1007/s10565-019-09496-2] [Citation(s) in RCA: 152] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 09/24/2019] [Indexed: 02/06/2023]
Abstract
Like the organism they constitute, the cells also die in different ways. The death can be predetermined, programmed, and cleanly executed, as in the case of apoptosis, or it can be traumatic, inflammatory, and sudden as many types of necrosis exemplify. Nevertheless, there are a number of cell deaths-some of them bearing a resemblance to apoptosis and/or necrosis, and many, distinct from each-that serve a multitude of roles in either supporting or disrupting the homoeostasis. Apoptosis is coordinated by death ligands, caspases, b-cell lymphoma-2 (Bcl-2) family proteins, and their downstream effectors. Events that can lead to apoptosis include mitotic catastrophe and anoikis. Necrosis, although it has been considered an abrupt and uncoordinated cell death, has many molecular events associated with it. There are cell death mechanisms that share some standard features with necrosis. These include methuosis, necroptosis, NETosis, pyronecrosis, and pyroptosis. Autophagy, generally a catabolic pathway that operates to ensure cell survival, can also kill the cell through mechanisms such as autosis. Other cell-death mechanisms include entosis, ferroptosis, lysosome-dependent cell death, and parthanatos.
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Affiliation(s)
- J Grace Nirmala
- School of Biological Sciences, UM-DAE Centre for Excellence in Basic Sciences, University of Mumbai, Vidyanagari, Mumbai, 400098, India
| | - Manu Lopus
- School of Biological Sciences, UM-DAE Centre for Excellence in Basic Sciences, University of Mumbai, Vidyanagari, Mumbai, 400098, India.
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23
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Chen H, Zhou C, Xie K, Meng X, Wang Y, Yu Y. Hydrogen-rich Saline Alleviated the Hyperpathia and Microglia Activation via Autophagy Mediated Inflammasome Inactivation in Neuropathic Pain Rats. Neuroscience 2019; 421:17-30. [PMID: 31689487 DOI: 10.1016/j.neuroscience.2019.10.046] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 10/25/2019] [Accepted: 10/28/2019] [Indexed: 01/20/2023]
Abstract
Neuropathic pain is a complication after a spinal nerve injury. The inflammasomes are now identified to be responsible for triggering inflammation in neuropathic pain. Autophagy participates in the process of neuropathic pain and can regulate the inflammasome activation in different diseases. Our previous research reported that hydrogen exerted a protective effect against neuropathic pain. Therefore, we focused on the mechanism and role of autophagy and inflammasome, by which hydrogen alleviated the hyperpathia induced by neuropathic pain. The results showed that neuropathic pain stimulated activation of inflammasome NLRP3 and autophagy pathway in the microglial cells of the spinal cord. The inhibition of NLRP3 inhibited the hyperpathia induced by spinal nerve litigation surgery. The absence of autophagy aggravated the inflammasome activity and hyperpathia. Hydrogen promoted autophagy related protein expression, inhibited the inflammasome NLRP3 pathway activation, and relieved the hyperpathia induced by neuropathic pain. Hydrogen treatment could alleviate hyperpathia by autophagy-mediated NLRP3 inactivation.
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Affiliation(s)
- Hongguang Chen
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, China; Tianjin Research Institute of Anesthesiology, Tianjin 300052, China
| | - Chunjing Zhou
- Department of Anesthesiology, Tianjin 4th Center Hospital, Tianjin 300140, China
| | - Keliang Xie
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, China; Tianjin Research Institute of Anesthesiology, Tianjin 300052, China
| | - Xiaoyin Meng
- Department of Gynaecology and Obstetrics, Tianjin Hospital, Tianjin 300211, China
| | - Yaoqi Wang
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, China; Tianjin Research Institute of Anesthesiology, Tianjin 300052, China
| | - Yonghao Yu
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, China; Tianjin Research Institute of Anesthesiology, Tianjin 300052, China.
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24
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Li C, Yin W, Yu N, Zhang D, Zhao H, Liu J, Liu J, Pan Y, Lin L. miR-155 promotes macrophage pyroptosis induced by Porphyromonas gingivalis through regulating the NLRP3 inflammasome. Oral Dis 2019; 25:2030-2039. [PMID: 31529565 DOI: 10.1111/odi.13198] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 07/26/2019] [Accepted: 09/11/2019] [Indexed: 12/14/2022]
Abstract
OBJECTIVE The aim of this study is to detect pyroptosis in macrophages stimulated with Porphyromonas gingivalis and elucidate the mechanism by which P. gingivalis induces pyroptosis in macrophages. METHODS The immortalized human monocyte cell line U937 was stimulated with P. gingivalis W83. Flow cytometry was carried out to detect pyroptosis in macrophages. The expression of miR-155 was detected by real-time PCR and inhibited using RNAi. Suppressor of cytokine signaling (SOCS) 1, cleaved GSDMD, caspase (CAS)-1, caspase-11, apoptosis-associated speck-like protein (ASC), and NOD-like receptor protein 3 (NLRP3) were detected by Western blotting, and IL-1β and IL-18 were detected by ELISA. RESULTS The rate of pyroptosis in macrophages and the expression of miR-155 increased upon stimulation with P. gingivalis and pyroptosis rate decreased when miR-155 was silenced. GSDMD-NT, CAS-11, CAS-1, ASC, NLRP3, IL-1β, and IL-18 levels increased, but SOCS1 decreased in U937 cells after stimulated with P. gingivalis. These changes were weakened in P. gingivalis-stimulated U937 macrophages transfected with lentiviruses carrying miR-155 shRNA compared to those transfected with non-targeting control sequence. However, there was no significant difference in ASC expression between P. gingivalis-stimulated shCont and shMiR-155 cells. CONCLUSIONS Porphyromonas gingivalis promotes pyroptosis in macrophages during early infection. miR-155 is involved in this process through regulating the NLRP3 inflammasome.
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Affiliation(s)
- Chen Li
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang, China
| | - Wanting Yin
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang, China.,MALO CLINIC, Shenyang, China
| | - Ning Yu
- Department of Periodontics and Oral Medicine, University of Michigan at Ann Arbor, MI, USA
| | - Dongmei Zhang
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang, China.,Liaoning Province Key Laboratory of Oral Diseases, Shenyang, China
| | - Haijiao Zhao
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang, China
| | - Jingbo Liu
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang, China
| | - Junchao Liu
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang, China.,Liaoning Province Translational Medicine Research Center of Oral Diseases, Shenyang, China
| | - Yaping Pan
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang, China
| | - Li Lin
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang, China
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25
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VU0155069 inhibits inflammasome activation independent of phospholipase D1 activity. Sci Rep 2019; 9:14349. [PMID: 31586128 PMCID: PMC6778193 DOI: 10.1038/s41598-019-50806-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 09/19/2019] [Indexed: 01/05/2023] Open
Abstract
The inflammasome is a specialized multiprotein oligomer that regulates IL-1β production. Although regulation of the inflammasome is related to crucial inflammatory disorders such as sepsis, pharmacological inhibitors that effectively inhibit inflammasome activity are limited. Here, we evaluated the effects of a phospholipase D1 (PLD1)-selective inhibitor (VU0155069) against sepsis and inflammasome activation. VU0155069 strongly enhances survival rate in cecal ligation and puncture (CLP)-induced sepsis by inhibiting lung inflammation, leukocyte apoptosis, and the production of proinflammatory cytokines, especially IL-1β. VU0155069 also significantly blocked IL-1β production, caspase-1 activation, and pyroptosis caused by several inflammasome-activating signals in the bone marrow-derived macrophages (BMDMs). However, VU0155069 did not affect LPS-induced activation of signaling molecules such as MAPK, Akt, NF-κB, and NLRP3 expression in the BMDMs. VU0155069 also failed to affect mitochondrial ROS generation and calcium increase caused by nigericin or ATP, and subsequent ASC oligomerization caused by several inflammasome-activating signals. VU0155069 indirectly inhibited caspase-1 activity caused by LPS + nigericin in BMDMs independent of PLD1 activity. We demonstrated that a PLD1 inhibitor, VU0155069, shows anti-septic activity as well as inflammasome-inhibiting effects. Our results suggest that VU0155069 can be considered a novel inflammasome inhibitor.
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26
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Ma J, Zhu S, Guo Y, Hao M, Chen Y, Wang Y, Yang M, Chen J, Guo M. Selenium Attenuates Staphylococcus aureus Mastitis in Mice by Inhibiting the Activation of the NALP3 Inflammasome and NF-κB/MAPK Pathway. Biol Trace Elem Res 2019; 191:159-166. [PMID: 30523572 DOI: 10.1007/s12011-018-1591-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 11/26/2018] [Indexed: 02/02/2023]
Abstract
Mastitis is one of the most important diseases affecting the dairy industry in the world, and it also poses a great threat to human food safety. In this study, we explored whether selenium can inhibit the activation of the NALP3 inflammasome and NF-κB/MAPK pathway to achieve anti-inflammatory effects. Sixty BALB/c female mice were randomly divided into three groups according to diets of different selenium concentrations (high, normal, and low). After 90 days, mice fed the same selenium concentration were randomly divided into two smaller groups, one of which was inoculated with Staphylococcus aureus and the other injected with saline as a control. Through histopathologic examination staining, western blot, qPCR, and ELISA, the results showed that with increasing selenium concentrations, the expression levels of IL-1β, TNF-α, NALP3, caspase-1, and ASC were decreased in mouse mammary tissue. Therefore, this study revealed that selenium can attenuate S. aureus mastitis by inhibiting the activation of the NALP3 inflammasome and NF-κB/MAPK pathway.
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Affiliation(s)
- Junkun Ma
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Shuo Zhu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Yingfang Guo
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Meilin Hao
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Yu Chen
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Ying Wang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Mei Yang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Jianguo Chen
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Mengyao Guo
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China.
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27
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Xu S, Zhou Q, Fan C, Zhao H, Wang Y, Qiu X, Yang K, Ji Q. Doxycycline inhibits NAcht Leucine-rich repeat Protein 3 inflammasome activation and interleukin-1β production induced by Porphyromonas gingivalis-lipopolysaccharide and adenosine triphosphate in human gingival fibroblasts. Arch Oral Biol 2019; 107:104514. [PMID: 31394382 DOI: 10.1016/j.archoralbio.2019.104514] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 08/01/2019] [Accepted: 08/01/2019] [Indexed: 12/19/2022]
Abstract
OBJECTIVE To investigate the effect of adenosine triphosphate (ATP) on inflammasome activation by Porphyromonas gingivalis-lipopolysaccharide (P. gingivalis-LPS) stimulation and the anti-inflammatory eff ;ect of doxycycline (Dox) in human gingival fibroblasts (HGFs). DESIGN The optimal concentration of P. gingivalis-LPS (1.0 μg/mL) for cellular viability was determined by observing cell morphology and measuring the amount of formazan and the expression of pro-caspase-1. The expression of genes and proteins related to the NAcht Leucine-rich repeat Protein 3 (NLRP3) inflammasome, including NLRP3, apoptosis-associated speck-like protein containing CARD (ASC), caspase-1 and its activated forms, and the inflammatory factor interleukin-1β (IL-1β) and its activated forms were measured. RESULTS The NLRP3 inflammasome (i.e., NLRP3, ASC, caspase-1) was not affected by stimulation with P. gingivalis-LPS or ATP. However, a combination of P. gingivalis-LPS and ATP significantly enhanced inflammasome activation and IL-1β production at the gene and protein levels as measured by quantitative real-time polymerase chain reaction (qRT-PCR) and western blot, respectively. Furthermore, doxycycline addition markedly inhibited inflammasome activation and IL-1β production induced by a combination of P. gingivalis-LPS and ATP. CONCLUSIONS LPS, ATP, and doxycycline play critical roles in regulating host immune responses. This evidence provides guidance for the application of tetracycline drugs for the clinical treatment of periodontal disease.
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Affiliation(s)
- Shuo Xu
- Department of Periodontology, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China; School of Stomatology of Qingdao University, Qingdao, 266003, China
| | - Qihui Zhou
- Institute for Translational Medicine, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao, 266021, China
| | - Chun Fan
- Department of Periodontology, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - Hongmei Zhao
- Department of Prosthodontics, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - Yanwen Wang
- Stuart Country Day School of the Sacred Heart, 1200 Stuart Road, Princeton, NJ, 08628, United States
| | - Xiaohui Qiu
- Department of Periodontology, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China; School of Stomatology of Qingdao University, Qingdao, 266003, China
| | - Kai Yang
- Department of Periodontology, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China; School of Stomatology of Qingdao University, Qingdao, 266003, China
| | - Qiuxia Ji
- Department of Periodontology, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China.
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28
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Sun L, Ma W, Gao W, Xing Y, Chen L, Xia Z, Zhang Z, Dai Z. Propofol directly induces caspase-1-dependent macrophage pyroptosis through the NLRP3-ASC inflammasome. Cell Death Dis 2019; 10:542. [PMID: 31316052 PMCID: PMC6637184 DOI: 10.1038/s41419-019-1761-4] [Citation(s) in RCA: 150] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Revised: 06/21/2019] [Accepted: 06/24/2019] [Indexed: 12/13/2022]
Abstract
Propofol infusion syndrome (PRIS) is an uncommon life-threatening complication observed most often in patients receiving high-dose propofol. High-dose propofol treatment with a prolonged duration can damage the immune system. However, the associated molecular mechanisms remain unclear. An increasing number of clinical and experimental observations have demonstrated that tissue-resident macrophages play a critical role in immune regulation during anaesthesia and procedural sedation. Since the inflammatory response is essential for mediating propofol-induced cell death and proinflammatory reactions, we hypothesised that propofol overdose induces macrophage pyroptosis through inflammasomes. Using primary cultured bone marrow-derived macrophages, murine macrophage cell lines (RAW264.7, RAW-asc and J774) and a mouse model, we investigated the role of NLRP3 inflammasome activation and secondary pyroptosis in propofol-induced cell death. We found that high-dose propofol strongly cleaved caspase-1 but not caspase-11 and biosynthesis of downstream interleukin (IL)-1β and IL-18. Inhibition of caspase-1 activity blocks IL-1β production. Moreover, NLRP3 deletion moderately suppressed cleaved caspase-1 as well as the proportion of pyroptosis, while levels of AIM2 were increased, triggering a compensatory pathway to pyroptosis in NLRP3-/- macrophages. Here, we show that propofol-induced mitochondrial reactive oxygen species (ROS) can trigger NLRP3 inflammasome activation. Furthermore, apoptosis-associated speck-like protein (ASC) was found to mediate NLRP3 and AIM2 signalling and contribute to propofol-induced macrophage pyroptosis. In addition, our work shows that propofol-induced apoptotic initiator caspase (caspase-9) subsequently cleaved effector caspases (caspase-3 and 7), indicating that both apoptotic and pyroptotic cellular death pathways are activated after propofol exposure. Our studies suggest, for the first time, that propofol-induced pyroptosis might be restricted to macrophage through an NLRP3/ASC/caspase-1 pathway, which provides potential targets for limiting adverse reactions during propofol application. These findings demonstrate that propofol overdose can trigger cell death through caspase-1 activation and offer new insights into the use of anaesthetic drugs.
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Affiliation(s)
- Lingbin Sun
- The Department of Anesthesiology, The Second Clinical Medical College (Shenzhen People's Hospital), Jinan University, No. 1017 Dongmen North Road, Shenzhen, People's Republic of China.,Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University, Shipai, Guangzhou, People's Republic of China
| | - Wei Ma
- Translational Medicine Collaorative Innovation Center, The Second Clinical Medical College (Shenzhen People's Hospital), Jinan University, No. 1017 Dongmen North Road, Shenzhen, People's Republic of China
| | - Wenli Gao
- The Department of Anesthesiology, The Second Clinical Medical College (Shenzhen People's Hospital), Jinan University, No. 1017 Dongmen North Road, Shenzhen, People's Republic of China
| | - Yanmei Xing
- The Department of Anesthesiology, The Second Clinical Medical College (Shenzhen People's Hospital), Jinan University, No. 1017 Dongmen North Road, Shenzhen, People's Republic of China
| | - Lixin Chen
- Department of Pharmacology, Medical College, Jinan University, Shipai, Guangzhou, People's Republic of China
| | - Zhengyuan Xia
- Department of Anesthesiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, People's Republic of China
| | - Zhongjun Zhang
- The Department of Anesthesiology, The Second Clinical Medical College (Shenzhen People's Hospital), Jinan University, No. 1017 Dongmen North Road, Shenzhen, People's Republic of China
| | - Zhongliang Dai
- The Department of Anesthesiology, The Second Clinical Medical College (Shenzhen People's Hospital), Jinan University, No. 1017 Dongmen North Road, Shenzhen, People's Republic of China.
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Xu F, Shen G, Su Z, He Z, Yuan L. Glibenclamide ameliorates the disrupted blood-brain barrier in experimental intracerebral hemorrhage by inhibiting the activation of NLRP3 inflammasome. Brain Behav 2019; 9:e01254. [PMID: 30859754 PMCID: PMC6456786 DOI: 10.1002/brb3.1254] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 12/15/2018] [Accepted: 02/09/2019] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND Glibenclamide is a widely used sulfonylurea drug prescribed to treat type II diabetes mellitus. Previous studies have demonstrated that glibenclamide has neuroprotective effects in central nervous system injury. However, the exact mechanism by which glibenclamide acts on the blood-brain barrier (BBB) after intracerebral hemorrhage (ICH) remains unclear. The purpose of this study was to validate the neuroprotective effects of glibenclamide on ICH and to explore the mechanisms underlying these effects. METHODS We investigated the effects of glibenclamide on experimental ICH using the autologous blood infusion model. Glibenclamide was administrated either immediately or 2 hr after ICH. Brain edema was quantified using the wet-dry method 3 days after injury. BBB integrity was evaluated by Evans Blue extravasation and degradation of the tight junction protein zona occludens-1 (ZO-1). mRNA levels of inflammatory cytokines were determined by quantitative polymerase chain reaction. Activation of the nucleotide-binding oligomerization domain-like receptor with a pyrin domain 3 (NLRP3) inflammasome and cell viability were also measured in cerebral microvascular endothelial b.End3 cells exposed to hemin. Neurological changes were evaluated by the Garcia score and rotarod test. RESULTS After ICH, the brain water content, Evans Blue extravasation, and inflammatory cytokines decreased significantly in the ipsilateral hemisphere of the experimental compared to the vehicle group. Glibenclamide treatment and NLRP3 knockdown significantly reduced hemin-induced activation of the NLRP3 inflammasome, release of extracellular lactate dehydrogenase, apoptosis, and loss of ZO-1 in b.End3 cells. However, NLRP3 knockdown abolished the protective effect of glibenclamide. CONCLUSION Glibenclamide maintained BBB integrity in experimental ICH by inhibiting the activation of the NLRP3 inflammasome in microvessel endothelial cells. Our findings will contribute to elucidating the pharmacological mechanism of action of glibenclamide and to developing a novel therapy for clinical ICH.
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Affiliation(s)
- Fulin Xu
- Department of Neurosurgery, Minhang District Central hospital, Shanghai, China
| | - Gang Shen
- Department of Neurosurgery, Minhang District Central hospital, Shanghai, China
| | - Zuopeng Su
- Department of Neurosurgery, Minhang District Central hospital, Shanghai, China
| | - Zijian He
- Department of Neurosurgery, Minhang District Central hospital, Shanghai, China
| | - Lutao Yuan
- Department of Neurosurgery, Minhang District Central hospital, Shanghai, China
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Zhang YZ, Zhang YL, Huang Q, Huang C, Jiang ZL, Cai F, Shen JF. AdipoRon Alleviates Free Fatty Acid-Induced Myocardial Cell Injury Via Suppressing Nlrp3 Inflammasome Activation. Diabetes Metab Syndr Obes 2019; 12:2165-2179. [PMID: 31749627 PMCID: PMC6817839 DOI: 10.2147/dmso.s221841] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 08/29/2019] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Hypoadiponectinemia is a high risk factor for type 2 diabetes and cardiovascular disease. Although adiponectin is a protective molecule in cardiovascular diseases, it is hampered due to short plasma half-life and high cost of production. This study aimed to investigate whether AdipoRon, a small-molecule adiponectin receptor agonist, alleviated saturated free fatty acids such as palmitic acid (PA)-induced cardiomyocyte injury by suppressing Nlrp3 inflammasome activation. METHODS Cell viability was used with MTT assay. Cell apoptosis and mitochondria membrane potential were detected by flow cytometry. We also detected the ROS production and colocolization of inflammasome protein with fluorescence and immunofluorescence microscopic analysis, respectively. Then, IL-1β was detected by Elisa assay and other protein expression was analyzed by Western blot. RESULTS Our observations demonstrated PA dose-dependently promoted the cell injury, and such high lipotoxicity induced impairment of cardiomyocytes was significantly attenuated by AdipoRon treatment. Moreover, PA markedly activated the first phase of Nlrp3 inflammasome (NF-ƙb) signaling. Notably, the stimulation of PA enhanced ROS production as regulators of Nlrp3 inflammasome activation. In addition, treatment with PA increased the Nlrp3 inflammasome protein expression and complex formation, while AdipoRon abolished it. Lastly, the suppressive effect of AdipoRon to PA-induced cell injury and Nlrp3 inflammasome activation was significantly reversed by Nlrp3 siRNA and pan-caspase inhibitor (z-vad-fmk). CONCLUSION Taken together, these data suggested that AdipoRon suppressed PA-induced myocardial cell injury by suppressing Nlrp3 inflammasome activation. Thus, AdipoRon might possess potent protective effect in lipotoxicity injury such as obesity leading to cardiac disease.
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Affiliation(s)
- You-Zhi Zhang
- School of Pharmacy, Hubei University of Science and Technology, Xianning, Hubei437100, People’s Republic of China
| | - Yu-Lin Zhang
- School of Pharmacy, Hubei University of Science and Technology, Xianning, Hubei437100, People’s Republic of China
| | - Qi Huang
- School of Pharmacy, Hubei University of Science and Technology, Xianning, Hubei437100, People’s Republic of China
| | - Cong Huang
- School of Pharmacy, Hubei University of Science and Technology, Xianning, Hubei437100, People’s Republic of China
| | - Zhi-Long Jiang
- School of Pharmacy, Hubei University of Science and Technology, Xianning, Hubei437100, People’s Republic of China
| | - Fei Cai
- School of Pharmacy, Hubei University of Science and Technology, Xianning, Hubei437100, People’s Republic of China
| | - Jian-Fen Shen
- Department of Central Laboratory, The First Affiliated Hospital of Jiaxing University, Jiaxing, Zhejiang314001, People’s Republic of China
- Correspondence: Jian-Fen Shen Department of Central Laboratory, The First Affiliated Hospital of Jiaxing University, 1882 Zhonghuan South Road, Jiaxing, Zhejiang314001, People’s Republic of ChinaTel +86 573 8251 9007 Email
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31
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Rodríguez-Alcázar JF, Ataide MA, Engels G, Schmitt-Mabmunyo C, Garbi N, Kastenmüller W, Latz E, Franklin BS. Charcot-Leyden Crystals Activate the NLRP3 Inflammasome and Cause IL-1β Inflammation in Human Macrophages. THE JOURNAL OF IMMUNOLOGY 2018; 202:550-558. [PMID: 30559319 DOI: 10.4049/jimmunol.1800107] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 11/13/2018] [Indexed: 12/30/2022]
Abstract
Charcot-Leyden crystals (CLCs) are Galectin-10 protein crystals that can form after eosinophils degranulate. CLCs can appear and persist in tissues from patients with eosinophilic disorders, such as asthma, allergic reactions, and fungal and helminthic infections. Despite abundant reports of their occurrence in human disease, the inflammatory potential of CLCs has remained unknown. In this article, we show that CLCs induce the release of the proinflammatory cytokine IL-1β upon their phagocytosis by primary human macrophages in vitro. Chemical inhibition and small interfering RNA knockdown of NLRP3 in primary human macrophages abrogated their IL-1β response to CLCs. Using C57BL/6 ASC-mCitrine transgenic inflammasome reporter mice, we showed that the instillation of CLCs into the lungs promoted the assembly of ASC complexes in infiltrating immune cells (neutrophils and inflammatory monocytes) and resulted in IL-1β accumulation into the bronchoalveolar lavage fluid. Our findings reveal that CLCs are recognized by the NLRP3 inflammasome, which may sustain inflammation that follows eosinophilic inflammatory processes.
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Affiliation(s)
| | - Marco Antonio Ataide
- Institute of Experimental Immunology, University Hospitals, University of Bonn, Bonn 53127, Germany
| | - Gudrun Engels
- Institute of Innate Immunity, University Hospitals, University of Bonn, Bonn 53127, Germany
| | | | - Natalio Garbi
- Institute of Experimental Immunology, University Hospitals, University of Bonn, Bonn 53127, Germany
| | - Wolfgang Kastenmüller
- Institute of Experimental Immunology, University Hospitals, University of Bonn, Bonn 53127, Germany
| | - Eicke Latz
- Institute of Innate Immunity, University Hospitals, University of Bonn, Bonn 53127, Germany.,Department of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA 01655; and.,German Center for Neurodegenerative Diseases, Bonn 53127, Germany
| | - Bernardo S Franklin
- Institute of Innate Immunity, University Hospitals, University of Bonn, Bonn 53127, Germany;
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32
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Fan C, Tang Y, Wang J, Xiong F, Guo C, Wang Y, Xiang B, Zhou M, Li X, Wu X, Li Y, Li X, Li G, Xiong W, Zeng Z. The emerging role of Epstein-Barr virus encoded microRNAs in nasopharyngeal carcinoma. J Cancer 2018; 9:2852-2864. [PMID: 30123354 PMCID: PMC6096363 DOI: 10.7150/jca.25460] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 06/16/2018] [Indexed: 12/24/2022] Open
Abstract
Epstein-Barr virus (EBV) is an oncogenic herpes virus that is closely associated with the initiation and development of nasopharyngeal carcinoma (NPC), lymphoma and other malignant tumors. EBV encodes 44 mature miRNAs that regulate viral and host cell gene expression and plays a variety of roles in biological functions and the development of cancer. In this review, we summarized the biological functions and molecular mechanisms of Epstein-Barr virus-encoded microRNAs (EBV miRNAs) in tumor immune evasion, proliferation, anti-apoptosis, invasion, metastasis and as a potential biomarker for NPC diagnosis and prognosis. The knowledge generated by EBV miRNAs can be used for EBV miRNA-based precision cancer treatments in the near future.
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Affiliation(s)
- Chunmei Fan
- Hunan Key Laboratory of Translational Radiation Oncology, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute and School of Basic Medical Science,, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yanyan Tang
- Hunan Key Laboratory of Translational Radiation Oncology, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute and School of Basic Medical Science,, Central South University, Changsha, Hunan, China
| | - Jinpeng Wang
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute and School of Basic Medical Science,, Central South University, Changsha, Hunan, China
| | - Fang Xiong
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Can Guo
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute and School of Basic Medical Science,, Central South University, Changsha, Hunan, China
| | - Yumin Wang
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute and School of Basic Medical Science,, Central South University, Changsha, Hunan, China
| | - Bo Xiang
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute and School of Basic Medical Science,, Central South University, Changsha, Hunan, China
| | - Ming Zhou
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute and School of Basic Medical Science,, Central South University, Changsha, Hunan, China
| | - Xiayu Li
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute and School of Basic Medical Science,, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xu Wu
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute and School of Basic Medical Science,, Central South University, Changsha, Hunan, China.,Department of Chemistry, University of North Dakota, Grand Forks, North Dakota, USA
| | - Yong Li
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute and School of Basic Medical Science,, Central South University, Changsha, Hunan, China.,Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Xiaoling Li
- Hunan Key Laboratory of Translational Radiation Oncology, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute and School of Basic Medical Science,, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Guiyuan Li
- Hunan Key Laboratory of Translational Radiation Oncology, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute and School of Basic Medical Science,, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Wei Xiong
- Hunan Key Laboratory of Translational Radiation Oncology, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute and School of Basic Medical Science,, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhaoyang Zeng
- Hunan Key Laboratory of Translational Radiation Oncology, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Cancer Research Institute and School of Basic Medical Science,, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China
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Abstract
Inflammasomes are the central signaling hubs of the inflammatory response. They process cytosolic evidence of infection, cell damage, or metabolic disturbances, and elicit a pro-inflammatory response mediated by members of the interleukin-1 family of cytokines and pyroptotoic cell death. On the molecular level, this is accomplished by the sensor-nucleated recruitment and oligomerization of the adapter protein ASC. Once a tunable threshold is reached, cooperative assembly of ASC into linear filaments and their condensation into macromolecular ASC specks promotes an all-or-none response. These structures are highly regulated and provide a unique signaling platform or compartment to control the activity of caspase-1 and likely other effectors. Emerging evidence indicates that ASC specks are also released from inflammasome-activated cells and accumulate in inflamed tissues, where they can continue to mature cytokines or be internalized by surrounding cells to further nucleate ASC specks in their cytosol. Little is known about the mechanisms governing ASC speck release, uptake, and endosomal escape, as well as its contribution to inflammation and disease. Here, we describe the different outcomes of inflammasome activation and discuss the potential function of extracellular ASC specks. We highlight gaps in our understanding of this central process of inflammation, which may have direct consequences on the modulation of host responses and chronic inflammation.
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Affiliation(s)
- Bernardo S Franklin
- Institute of Innate Immunity, University Hospitals, University of Bonn, Bonn, Germany
| | - Eicke Latz
- Institute of Innate Immunity, University Hospitals, University of Bonn, Bonn, Germany.,Department of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA, USA.,German Center for Neurodegenerative Diseases, Bonn, Germany
| | - Florian Ingo Schmidt
- Institute of Innate Immunity, University Hospitals, University of Bonn, Bonn, Germany
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34
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Tamai R, Kiyoura Y. Alendronate augments lipid A-induced IL-1β release and Smad3/NLRP3/ASC-dependent cell death. Life Sci 2018; 198:8-17. [DOI: 10.1016/j.lfs.2018.02.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 02/01/2018] [Accepted: 02/09/2018] [Indexed: 12/13/2022]
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35
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Xu T, Du Y, Fang XB, Chen H, Zhou DD, Wang Y, Zhang L. New insights into Nod-like receptors (NLRs) in liver diseases. INTERNATIONAL JOURNAL OF PHYSIOLOGY, PATHOPHYSIOLOGY AND PHARMACOLOGY 2018; 10:1-16. [PMID: 29593846 PMCID: PMC5871625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 02/19/2018] [Indexed: 06/08/2023]
Abstract
Activation of inflammatory signaling pathways is of central importance in the pathogenesis of alcoholic liver disease (ALD) and nonalcoholic steatohepatitis (NASH). Nod-like receptors (NLRs) are intracellular innate immune sensors of microbes and danger signals that control multiple aspects of inflammatory responses. Recent studies demonstrated that NLRs are expressed and activated in innate immune cells as well as in parenchymal cells in the liver. For example, NLRP3 signaling is involved in liver ischemia-reperfusion (I/R) injury and silencing of NLRP3 can protect the liver from I/R injury. In this article, we review the evidence that highlights the critical importance of NLRs in the prevalent liver diseases. The significance of NLR-induced intracellular signaling pathways and cytokine production is also evaluated.
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Affiliation(s)
- Tao Xu
- School of Pharmacy, Anhui Medical UniversityHefei 230032, China
- Institute for Liver Disease of Anhui Medical University, Anhui Medical UniversityHefei 230032, China
| | - Yan Du
- School of Pharmacy, Anhui Medical UniversityHefei 230032, China
- Institute for Liver Disease of Anhui Medical University, Anhui Medical UniversityHefei 230032, China
| | - Xiu-Bin Fang
- The Second Affiliated Hospital of Anhui Medical UniversityFu Rong Road, Hefei 230601, Anhui Province, China
| | - Hao Chen
- School of Pharmacy, Anhui Medical UniversityHefei 230032, China
- Institute for Liver Disease of Anhui Medical University, Anhui Medical UniversityHefei 230032, China
| | - Dan-Dan Zhou
- School of Pharmacy, Anhui Medical UniversityHefei 230032, China
- Institute for Liver Disease of Anhui Medical University, Anhui Medical UniversityHefei 230032, China
| | - Yang Wang
- School of Pharmacy, Anhui Medical UniversityHefei 230032, China
- Institute for Liver Disease of Anhui Medical University, Anhui Medical UniversityHefei 230032, China
| | - Lei Zhang
- School of Pharmacy, Anhui Medical UniversityHefei 230032, China
- Institute for Liver Disease of Anhui Medical University, Anhui Medical UniversityHefei 230032, China
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36
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Bonnekoh H, Scheffel J, Kambe N, Krause K. The role of mast cells in autoinflammation. Immunol Rev 2018; 282:265-275. [DOI: 10.1111/imr.12633] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Hanna Bonnekoh
- Department of Dermatology and Allergy; Allergie-Centrum-Charité; Charité - Universitätsmedizin Berlin; Berlin Germany
- Autoinflammation Reference Center Charité (ARC2); Charité - Universitätsmedizin Berlin; Berlin Germany
| | - Jörg Scheffel
- Department of Dermatology and Allergy; Allergie-Centrum-Charité; Charité - Universitätsmedizin Berlin; Berlin Germany
- Autoinflammation Reference Center Charité (ARC2); Charité - Universitätsmedizin Berlin; Berlin Germany
| | - Naotomo Kambe
- Department of Dermatology; Kansai Medical University; Hirakata Japan
- Allergy Center; Kansai Medical University; Hirakata Japan
| | - Karoline Krause
- Department of Dermatology and Allergy; Allergie-Centrum-Charité; Charité - Universitätsmedizin Berlin; Berlin Germany
- Autoinflammation Reference Center Charité (ARC2); Charité - Universitätsmedizin Berlin; Berlin Germany
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37
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Fenini G, Grossi S, Gehrke S, Beer HD, Satoh TK, Contassot E, French LE. The p38 Mitogen-Activated Protein Kinase Critically Regulates Human Keratinocyte Inflammasome Activation. J Invest Dermatol 2017; 138:1380-1390. [PMID: 29287762 DOI: 10.1016/j.jid.2017.10.037] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 10/25/2017] [Accepted: 10/27/2017] [Indexed: 02/07/2023]
Abstract
Inflammasomes are key intracellular signaling platforms involved in innate immune responses to micro-organisms and danger signals. Extracellular signal-regulated kinase, Jun N-terminal kinase, and p38 mitogen-activated protein kinase family members are activated by numerous environmental stresses. Recently, it has been reported that Jun N-terminal kinase is involved in inflammasome activation in myeloid immune cells. To date, the role of mitogen-activated protein kinase in inflammasome activity in keratinocytes has not been investigated. Here, we show that, in primary human keratinocytes, p38 mitogen-activated protein kinase is required for inflammasome activation and IL-1β secretion. Using selective small molecule inhibitors, small interfering RNA gene silencing, and CRISPR/Cas9-based deletion, we demonstrate the above and identify p38α and p38δ as critical regulators of ASC oligomerization, inflammasome activation, and IL-1β secretion in keratinocytes. Furthermore, our data suggest that the nature of the mitogen-activated protein kinase regulating inflammasome activity exhibits a certain cell specificity, with p38 playing a predominant role in keratinocytes and Jun N-terminal kinase 1 in cells of myeloid origin.
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Affiliation(s)
- Gabriele Fenini
- Department of Dermatology, Zurich University Hospital, Zurich, Switzerland
| | - Serena Grossi
- Department of Dermatology, Zurich University Hospital, Zurich, Switzerland
| | - Samuel Gehrke
- Department of Dermatology, Zurich University Hospital, Zurich, Switzerland
| | - Hans-Dietmar Beer
- Department of Dermatology, Zurich University Hospital, Zurich, Switzerland
| | - Takashi K Satoh
- Department of Dermatology, Zurich University Hospital, Zurich, Switzerland
| | - Emmanuel Contassot
- Department of Dermatology, Zurich University Hospital, Zurich, Switzerland.
| | - Lars E French
- Department of Dermatology, Zurich University Hospital, Zurich, Switzerland
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38
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Harte C, Gorman AL, McCluskey S, Carty M, Bowie AG, Scott CJ, Meade KG, Lavelle EC. Alum Activates the Bovine NLRP3 Inflammasome. Front Immunol 2017; 8:1494. [PMID: 29209310 PMCID: PMC5701618 DOI: 10.3389/fimmu.2017.01494] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 10/24/2017] [Indexed: 11/21/2022] Open
Abstract
There has been a move away from vaccines composed of whole or inactivated antigens toward subunit-based vaccines, which although safe, provide less immunological protection. As a result, the use of adjuvants to enhance and direct adaptive immune responses has become the focus of much targeted bovine vaccine research. However, the mechanisms by which adjuvants work to enhance immunological protection in many cases remains unclear, although this knowledge is critical to the rational design of effective next generation vaccines. This study aimed to investigate the mechanisms by which alum, a commonly used adjuvant in bovine vaccines, enhances IL-1β secretion in bovine peripheral blood mononuclear cells (PBMCs). Unlike the case with human PBMCs, alum promoted IL-1β secretion in a subset of bovine PBMCs without priming with a toll-like receptor agonist. This suggests that PBMCs from some cattle are primed to produce this potent inflammatory cytokine and western blotting confirmed the presence of preexisting pro-IL-1β in PBMCs from a subset of 8-month-old cattle. To address the mechanism underlying alum-induced IL-1β secretion, specific inhibitors identified that alum mediates lysosomal disruption which subsequently activates the assembly of an NLRP3, ASC, caspase-1, and potentially caspase-8 containing complex. These components form an inflammasome, which mediates alum-induced IL-1β secretion in bovine PBMCs. Given the demonstrated role of the NLRP3 inflammasome in regulating adaptive immunity in murine systems, these results will inform further targeted research into the potential of inflammasome activation for rational vaccine design in cattle.
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Affiliation(s)
- Ciaran Harte
- Adjuvant Research Group, School of Biochemistry and Immunology, Trinity College Dublin, Trinity Biomedical Sciences Institute, Dublin, Ireland.,Animal and Bioscience Research Department, Animal and Grassland Research and Innovation Centre, Teagasc, Grange, Ireland
| | - Aoife L Gorman
- Adjuvant Research Group, School of Biochemistry and Immunology, Trinity College Dublin, Trinity Biomedical Sciences Institute, Dublin, Ireland
| | - S McCluskey
- Adjuvant Research Group, School of Biochemistry and Immunology, Trinity College Dublin, Trinity Biomedical Sciences Institute, Dublin, Ireland
| | - Michael Carty
- Viral Immune Evasion Group, School of Biochemistry and Immunology, Trinity College Dublin, Trinity Biomedical Sciences Institute, Dublin, Ireland
| | - Andrew G Bowie
- Viral Immune Evasion Group, School of Biochemistry and Immunology, Trinity College Dublin, Trinity Biomedical Sciences Institute, Dublin, Ireland
| | - C J Scott
- Molecular Therapeutics, School of Pharmacy, Queen's University Belfast, Belfast, United Kingdom
| | - Kieran G Meade
- Animal and Bioscience Research Department, Animal and Grassland Research and Innovation Centre, Teagasc, Grange, Ireland
| | - Ed C Lavelle
- Adjuvant Research Group, School of Biochemistry and Immunology, Trinity College Dublin, Trinity Biomedical Sciences Institute, Dublin, Ireland
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Xu X, Zhang L, Ye X, Hao Q, Zhang T, Cui G, Yu M. Nrf2/ARE pathway inhibits ROS-induced NLRP3 inflammasome activation in BV2 cells after cerebral ischemia reperfusion. Inflamm Res 2017; 67:57-65. [PMID: 28956063 DOI: 10.1007/s00011-017-1095-6] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 08/20/2017] [Accepted: 09/21/2017] [Indexed: 10/18/2022] Open
Abstract
OBJECTIVE Current therapies for ischemia/reperfusion are insufficient because of our poor understanding of the mechanisms of brain injury after ischemic stroke. As a vital component of the innate immune system, NLRP3 inflammasome contributes to ischemic brain injury; however, a detailed understanding of their molecular mechanisms is unknown. This study was designed to investigate the effect of nuclear factor E2-related factor-2 (Nrf2) on NLRP3 inflammasome. MATERIALS AND METHODS BV2 microglial cells were pretreated with tert-butylhydroquinone or Nrf2 CRISPR plasmid before oxygen-glucose deprivation/reoxygenation (OGDR) exposure. Then we observed the effect of Nrf2 on NLRP3 inflammasome. RESULTS We identified that Nrf2 activation inhibited NLRP3 inflammasome expression and subsequent IL-1β generation. Furthermore, the activation of NLRP3 inflammasome was sensitive to the reactive oxygen species (ROS) level and Nrf2 could decrease the production of ROS. Additionally, as a Nrf2-targeted ARE gene, NADPH quinone oxidoreductase 1 was involved in the inhibition of the NLRP3 inflammasome. CONCLUSION We elucidated an inhibitory regulation of Nrf2/ARE pathway on ROS-induced NLRP3 inflammasome activation in BV2 microglial cells after OGDR exposure.
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Affiliation(s)
- Xiujian Xu
- Department of Neurology, The Affiliated Hospital of Jiangsu University, No. 438 Jiefang Road, Zhenjiang, 212001, Jiangsu, China
| | - Liang Zhang
- Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Xinchun Ye
- Department of Neurology, The Affiliated Hospital of Xuzhou Medical University, No. 99 West Huaihai Road, Xuzhou, 221006, Jiangsu, China
| | - Qi Hao
- Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Tao Zhang
- Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Guiyun Cui
- Department of Neurology, The Affiliated Hospital of Xuzhou Medical University, No. 99 West Huaihai Road, Xuzhou, 221006, Jiangsu, China.
| | - Ming Yu
- Department of Neurology, The Affiliated Hospital of Jiangsu University, No. 438 Jiefang Road, Zhenjiang, 212001, Jiangsu, China.
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Xie Y, Guo H, Wang L, Xu L, Zhang X, Yu L, Liu Q, Li Y, Zhao N, Zhao N, Ye R, Liu X. Human albumin attenuates excessive innate immunity via inhibition of microglial Mincle/Syk signaling in subarachnoid hemorrhage. Brain Behav Immun 2017; 60:346-360. [PMID: 27845194 DOI: 10.1016/j.bbi.2016.11.004] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Revised: 11/06/2016] [Accepted: 11/07/2016] [Indexed: 12/16/2022] Open
Abstract
Subarachnoid hemorrhage (SAH) is a devastating subtype of stroke. Microglial macrophage-inducible C-type lectin (Mincle) receptor launches microglial innate immunity after SAH, and thereby achieves a key step of early cerebral injury in SAH. We previously revealed albumin could improve long-term neurological outcomes after SAH. In this study, we examined the role of microglia-mediated innate immunity in the salutary effects of albumin. SAH was induced by endovascular perforation in rats. We found that albumin can significantly mitigate early neurovascular dysfunction of SAH rats. Albumin administration resulted in reduced Iba-1 and CD68 staining in cortex. Markers of microglia M1 polarization (iNOS, IL-1β, CD16, and CD32) were remarkably suppressed. Neutrophil invasion was inhibited as chemokines (MCP-1, CINC-1, and CXCL-2) mRNA levels, myeloperoxidase (MPO) and intracellular adhesion molecule-1 (ICAM-1) expressions were decreased. Mechanistically, albumin bound with microglial Mincle receptor, and retarded Mincle/Syk/IL-1β signaling in ipsilateral hemisphere subjected to SAH. In the cultured BV-2 microglial cells, we found Mincle and its ligand SAP130 mediate the cross-talk between neuronal necroptosis and microglial immunity response following SAH-related injury. Albumin could attenuate SAP130-induced Mincle upregulation and subsequent microglial inflammatory responses. The anti-inflammation effect of albumin was similar to the effect of genetic knockdown of Mincle. This effect may be attributed to a direct association between albumin and Mincle. The interaction also yielded a depression in the initiation of Mincle/Syk/IL-1β pathway. In conclusion, our results indicate that albumin can ameliorate innate immune responses after SAH. This anti-inflammatory action may be through direct restraining microglial Mincle receptor.
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Affiliation(s)
- Yi Xie
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210000, China
| | - Hongquan Guo
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210000, China
| | - Liumin Wang
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210000, China
| | - Lili Xu
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210000, China
| | - Xiaohao Zhang
- Department of Neurology, The Second Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210000, China
| | - Linjie Yu
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210000, China
| | - Qian Liu
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210000, China
| | - Yunzi Li
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210000, China
| | - Nana Zhao
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210000, China
| | - Nan Zhao
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210000, China
| | - Ruidong Ye
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210000, China.
| | - Xinfeng Liu
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210000, China.
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Liu X, Zhang X, Ding Y, Zhou W, Tao L, Lu P, Wang Y, Hu R. Nuclear Factor E2-Related Factor-2 Negatively Regulates NLRP3 Inflammasome Activity by Inhibiting Reactive Oxygen Species-Induced NLRP3 Priming. Antioxid Redox Signal 2017; 26:28-43. [PMID: 27308893 PMCID: PMC5198158 DOI: 10.1089/ars.2015.6615] [Citation(s) in RCA: 171] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AIMS The NLRP3 inflammasome is a multiprotein complex that protects hosts against a variety of pathogens. However, the molecular mechanisms of modulating NLRP3 inflammasome activation, especially at the priming step, are still poorly understood. This study was designed to elucidate the negative regulation of nuclear factor E2-related factor-2 (Nrf2) on the activation of NLRP3 inflammasome. RESULTS We reported that Nrf2 activation inhibited NLRP3 expression, caspase-1 cleavage, and subsequent IL-1β generation. Compared with normal cells, Nrf2-deficient cells showed upregulated cleaved caspase-1, which were attributed to the increased transcription of NLRP3 caused by excess reactive oxygen species (ROS). Furthermore, priming of the NLRP3 inflammasome was sensitive to the exogenous ROS levels induced by H2O2 or rotenone. Combined with adenosine triphosphate, rotenone triggered higher activity of the NLRP3 inflammasome compared with lipopolysaccharide, suggesting that ROS promoted the priming step. In addition, Nrf2-induced NQO1 was involved in the inhibition of the NLRP3 inflammasome. In an in vivo alum-induced peritonitis mouse model, Nrf2 activation suppressed typical IL-1 signaling-dependent inflammation, whereas Nrf2-/- mice exhibited a significant increase in the recruitment of immune cell and the generation of IL-1β compared with wild-type mice. INNOVATION We elucidated the effects and possible mechanisms of Nrf2 activation-induced NQO1 expression on NLRP3 inflammasome inactivation and established a novel regulatory role of the Nrf2 pathway in ROS-induced NLRP3 priming. CONCLUSIONS We demonstrated Nrf2 negatively regulating NLRP3 inflammasome activity by inhibiting the priming step and suggested that Nrf2 could be a potential target for some uncontrolled inflammasome activation-associated diseases. Antioxid. Redox Signal. 26, 28-43.
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Affiliation(s)
- Xiuting Liu
- Department of Physiology, State Key Laboratory of Natural Medicines, China Pharmaceutical University , Nanjing, China
| | - Xin Zhang
- Department of Physiology, State Key Laboratory of Natural Medicines, China Pharmaceutical University , Nanjing, China
| | - Yang Ding
- Department of Physiology, State Key Laboratory of Natural Medicines, China Pharmaceutical University , Nanjing, China
| | - Wei Zhou
- Department of Physiology, State Key Laboratory of Natural Medicines, China Pharmaceutical University , Nanjing, China
| | - Lei Tao
- Department of Physiology, State Key Laboratory of Natural Medicines, China Pharmaceutical University , Nanjing, China
| | - Ping Lu
- Department of Physiology, State Key Laboratory of Natural Medicines, China Pharmaceutical University , Nanjing, China
| | - Yajing Wang
- Department of Physiology, State Key Laboratory of Natural Medicines, China Pharmaceutical University , Nanjing, China
| | - Rong Hu
- Department of Physiology, State Key Laboratory of Natural Medicines, China Pharmaceutical University , Nanjing, China
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The Yersinia Type III secretion effector YopM Is an E3 ubiquitin ligase that induced necrotic cell death by targeting NLRP3. Cell Death Dis 2016; 7:e2519. [PMID: 27929533 PMCID: PMC5260993 DOI: 10.1038/cddis.2016.413] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Revised: 11/09/2016] [Accepted: 11/11/2016] [Indexed: 12/28/2022]
Abstract
Yersinia pestis uses type III effector proteins to target eukaryotic signaling systems. The Yersinia outer protein (Yop) M effector from the Y. pestis strain is a critical virulence determinant; however, its role in Y. pestis pathogenesis is just beginning to emerge. Here we first identify YopM as the structural mimic of the bacterial IpaH E3 ligase family in vitro, and establish that the conserved CLD motif in its N-terminal is responsible for the E3 ligase function. Furthermore, we show that NLRP3 is a novel target of the YopM protein. Specially, YopM associates with NLRP3, and its CLD ligase motif mediates the activating K63-linked ubiquitylation of NLRP3; as a result, YopM modulates NLRP3-mediated cell necrosis. Mutation of YopM E3 ligase motif dramatically reduces the ability of Y. pestis to induce HMGB1 release and cell necrosis, which ultimately contributes to bacterial virulence. In conclusion, this study has identified a previously unrecognized role for YopM E3 ligase activity in the regulation of host cell necrosis and plague pathogenesis.
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Mena HA, Carestia A, Scotti L, Parborell F, Schattner M, Negrotto S. Extracellular histones reduce survival and angiogenic responses of late outgrowth progenitor and mature endothelial cells. J Thromb Haemost 2016; 14:397-410. [PMID: 26663311 DOI: 10.1111/jth.13223] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Indexed: 12/25/2022]
Abstract
UNLABELLED ESSENTIALS: Extracellular histones are highly augmented in sites of neovessel formation, such as regeneration tissues. We studied histone effect on survival and angiogenic activity of mature and progenitor endothelial cells. Extracellular histones trigger apoptosis and pyroptosis and reduce angiogenesis in vivo and in vitro. Histone blockade can be useful as a therapeutic strategy to improve angiogenesis and tissue regeneration. BACKGROUND Extracellular histones are highly augmented in sites of neovessel formation, like regeneration tissues. Their cytotoxic effect has been studied in endothelial cells, although the mechanism involved and their action on endothelial colony-forming cells (ECFCs) remain unknown. OBJECTIVE To study the effect of histones on ECFC survival and angiogenic functions and compare it with mature endothelial cells. METHODS AND RESULTS Nuclear morphology analysis showed that each human recombinant histone triggered both apoptotic-like and necrotic-like cell deaths in both mature and progenitor endothelial cells. While H1 and H2A exerted a weak toxicity, H2B, H3 and H4 were the most powerful. The percentage of apoptosis correlated with the percentage of ECFCs exhibiting caspase-3 activation and was zeroed by the pan-caspase inhibitor Z-VAD-FMK. Necrotic-like cell death was also suppressed by this compound and the caspase-1 inhibitor Ac-YVAD-CMK, indicating that histones triggered ECFC pyroptosis. All histones, at non-cytotoxic concentrations, reduced migration and H2B, H3 and H4 induced cell cycle arrest and impaired tubulogenesis via p38 activation. Neutrophil-derived histones exerted similar effects. In vivo blood vessel formation in the quail chorioallantoic membrane was also reduced by H2B, H3 and H4. Their cytotoxic and antiangiogenic effects were suppressed by unfractioned and low-molecular-weight heparins and the combination of TLR2 and TLR4 blocking antibodies. CONCLUSIONS Histones trigger both apoptosis and pyroptosis of ECFCs and inhibit their angiogenic functions. Their cytotoxic and antiangiogenic effects are similar in mature endothelial cells and disappear after heparin addition or TLR2/TLR4 blockade, suggesting both as therapeutic strategies to improve tissue regeneration.
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Affiliation(s)
- H A Mena
- Experimental Thrombosis Laboratory, Institute of Experimental Medicine (IMEX), National Academy of Medicine-CONICET, Buenos Aires, Argentina
| | - A Carestia
- Experimental Thrombosis Laboratory, Institute of Experimental Medicine (IMEX), National Academy of Medicine-CONICET, Buenos Aires, Argentina
| | - L Scotti
- Experimental Medicine and Biology Institute (IByME), CONICET, Buenos Aires, Argentina
| | - F Parborell
- Experimental Medicine and Biology Institute (IByME), CONICET, Buenos Aires, Argentina
| | - M Schattner
- Experimental Thrombosis Laboratory, Institute of Experimental Medicine (IMEX), National Academy of Medicine-CONICET, Buenos Aires, Argentina
| | - S Negrotto
- Experimental Thrombosis Laboratory, Institute of Experimental Medicine (IMEX), National Academy of Medicine-CONICET, Buenos Aires, Argentina
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Satoh T, Otsuka A, Contassot E, French LE. The inflammasome and IL-1β: implications for the treatment of inflammatory diseases. Immunotherapy 2016; 7:243-54. [PMID: 25804477 DOI: 10.2217/imt.14.106] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The bioactive form of IL-1β, a key immunoregulatory and proinflammatory cytokine, is produced by the inflammasome - a caspase-1 activating molecular platform - in response to selected danger-associated molecular patterns and pathogen-associated molecular patterns. Advances in understanding the role of IL-1β in inflammatory conditions has resulted in IL-1β becoming a therapeutic target for a number of inflammatory diseases beyond the rare monogenic autoinflammatory diseases characterized by aberrant inflammasome function and enhanced bioactive IL-1β production. In the monogenic autoinflammatory diseases known as cryopyrin-associated periodic syndromes, neutralization of IL-1β results in a rapid and sustained reduction in disease severity without severe side effects, which has consequently driven off-label applications of IL-1β-targeted therapy in other inflammatory diseases. This review summarizes inflammatory diseases for which accumulating evidence suggests a therapeutic potential for IL-1β antagonists.
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Affiliation(s)
- Takashi Satoh
- Department of Dermatology, University Hospital Zurich, Zurich 8091, Switzerland
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Xu T, Ni MM, Xing-Li, Li XF, Meng XM, Huang C, Li J. NLRC5 regulates TGF-β1-induced proliferation and activation of hepatic stellate cells during hepatic fibrosis. Int J Biochem Cell Biol 2015; 70:92-104. [PMID: 26592197 DOI: 10.1016/j.biocel.2015.11.010] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2015] [Revised: 10/18/2015] [Accepted: 11/12/2015] [Indexed: 02/07/2023]
Abstract
Therapeutic management of liver fibrosis remains an unsolved clinical problem. Hepatic accumulation of extracellular matrix, mainly collagen, is mediated by the production of transforming growth factor-β1 (TGF-β1) in hepatic stellate cells (HSCs). NLRC5, the largest member of the NLR protein family, has recently been identified as a critical regulator of immune responses. Novel evidence shows that NLRC5 is an important negative modulator of inflammatory pathways. Herein, we determined the regulation of NLRC5 in liver fibrogenesis and its underlying mechanisms. We have shown that NLRC5 was upregulated in human liver fibrotic tissues. Overexpression of NLRC5 resulted in an upregulation of collagen 1 and α-smooth muscle actin expression in HSC LX-2 cells, which was inhibited by NLRC5 knockdown with its siRNA. Furthermore, NLRC5 deficiency significantly suppressed TGF-β1-induced proliferation but increased apoptosis (i.e., increased caspases-3, DR4 and DR5) in LX-2 cells. In addition, knockdown of NLRC5 promoted the activation of NF-κB signaling pathways but abrogated phosphorylation of Smad2 and Smad3 proteins in response to TGF-β1. These results indicate that NLRC5 is a potent pro-fibrogenic molecule for HSC activation through TGF-β1/Smad and NF-κB signaling pathways. NLRC5 inhibition would be a promising therapeutic avenue for treating hepatic fibrosis.
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Affiliation(s)
- Tao Xu
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University, Anhui Medical University, Hefei 230032, China
| | - Ming-ming Ni
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University, Anhui Medical University, Hefei 230032, China
| | - Xing-Li
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University, Anhui Medical University, Hefei 230032, China
| | - Xiao-feng Li
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University, Anhui Medical University, Hefei 230032, China
| | - Xiao-ming Meng
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University, Anhui Medical University, Hefei 230032, China
| | - Cheng Huang
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University, Anhui Medical University, Hefei 230032, China
| | - Jun Li
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University, Anhui Medical University, Hefei 230032, China.
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Zhao J, Mou Y, Bernstock JD, Klimanis D, Wang S, Spatz M, Maric D, Johnson K, Klinman DM, Li X, Li X, Hallenbeck JM. Synthetic Oligodeoxynucleotides Containing Multiple Telemeric TTAGGG Motifs Suppress Inflammasome Activity in Macrophages Subjected to Oxygen and Glucose Deprivation and Reduce Ischemic Brain Injury in Stroke-Prone Spontaneously Hypertensive Rats. PLoS One 2015; 10:e0140772. [PMID: 26473731 PMCID: PMC4608557 DOI: 10.1371/journal.pone.0140772] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 09/30/2015] [Indexed: 02/06/2023] Open
Abstract
The immune system plays a fundamental role in both the development and pathobiology of stroke. Inflammasomes are multiprotein complexes that have come to be recognized as critical players in the inflammation that ultimately contributes to stroke severity. Inflammasomes recognize microbial and host-derived danger signals and activate caspase-1, which in turn controls the production of the pro-inflammatory cytokine IL-1β. We have shown that A151, a synthetic oligodeoxynucleotide containing multiple telemeric TTAGGG motifs, reduces IL-1β production by activated bone marrow derived macrophages that have been subjected to oxygen-glucose deprivation and LPS stimulation. Further, we demonstrate that A151 reduces the maturation of caspase-1 and IL-1β, the levels of both the iNOS and NLRP3 proteins, and the depolarization of mitochondrial membrane potential within such cells. In addition, we have demonstrated that A151 reduces ischemic brain damage and NLRP3 mRNA levels in SHR-SP rats that have undergone permanent middle cerebral artery occlusion. These findings clearly suggest that the modulation of inflammasome activity via A151 may contribute to a reduction in pro-inflammatory cytokine production by macrophages subjected to conditions that model brain ischemia and modulate ischemic brain damage in an animal model of stroke. Therefore, modulation of ischemic pathobiology by A151 may have a role in the development of novel stroke prevention and therapeutic strategies.
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Affiliation(s)
- Jing Zhao
- Department of Neurology, Jinan Central Hospital affiliated with Shandong University, 105 Jiefang Road, Jinan, Shandong, 250013, P. R. China
- Stroke Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Yongshan Mou
- Stroke Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Joshua D. Bernstock
- Stroke Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Dace Klimanis
- Stroke Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Sixian Wang
- College of Arts and Sciences, Cornell University, Ithaca, New York, United States of America
| | - Maria Spatz
- Stroke Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Dragan Maric
- National Institute of Neurological Disorders and Stroke, Flow Cytometry Core Facility, Bethesda, Maryland, United States of America
| | - Kory Johnson
- Information Technology & Bioinformatics Program, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Dennis M. Klinman
- Cancer and Inflammation Program, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Xiaohong Li
- Department of Neurology, Jinan Central Hospital affiliated with Shandong University, 105 Jiefang Road, Jinan, Shandong, 250013, P. R. China
- * E-mail: (JMH); (Xinhui Li); (Xiaohong Li)
| | - Xinhui Li
- Stroke Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, United States of America
- * E-mail: (JMH); (Xinhui Li); (Xiaohong Li)
| | - John M. Hallenbeck
- Stroke Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, United States of America
- * E-mail: (JMH); (Xinhui Li); (Xiaohong Li)
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Boone DR, Micci MA, Taglialatela IG, Hellmich JL, Weisz HA, Bi M, Prough DS, DeWitt DS, Hellmich HL. Pathway-focused PCR array profiling of enriched populations of laser capture microdissected hippocampal cells after traumatic brain injury. PLoS One 2015; 10:e0127287. [PMID: 26016641 PMCID: PMC4446038 DOI: 10.1371/journal.pone.0127287] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 04/13/2015] [Indexed: 12/22/2022] Open
Abstract
Cognitive deficits in survivors of traumatic brain injury (TBI) are associated with irreversible neurodegeneration in brain regions such as the hippocampus. Comparative gene expression analysis of dying and surviving neurons could provide insight into potential therapeutic targets. We used two pathway-specific PCR arrays (RT2 Profiler Apoptosis and Neurotrophins & Receptors PCR arrays) to identify and validate TBI-induced gene expression in dying (Fluoro-Jade-positive) or surviving (Fluoro-Jade- negative) pyramidal neurons obtained by laser capture microdissection (LCM). In the Apoptosis PCR array, dying neurons showed significant increases in expression of genes associated with cell death, inflammation, and endoplasmic reticulum (ER) stress compared with adjacent, surviving neurons. Pro-survival genes with pleiotropic functions were also significantly increased in dying neurons compared to surviving neurons, suggesting that even irreversibly injured neurons are able to mount a protective response. In the Neurotrophins & Receptors PCR array, which consists of genes that are normally expected to be expressed in both groups of hippocampal neurons, only a few genes were expressed at significantly different levels between dying and surviving neurons. Immunohistochemical analysis of selected, differentially expressed proteins supported the gene expression data. This is the first demonstration of pathway-focused PCR array profiling of identified populations of dying and surviving neurons in the brain after TBI. Combining precise laser microdissection of identifiable cells with pathway-focused PCR array analysis is a practical, low-cost alternative to microarrays that provided insight into neuroprotective signals that could be therapeutically targeted to ameliorate TBI-induced neurodegeneration.
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Affiliation(s)
- Deborah R. Boone
- Department of Anesthesiology, The University of Texas Medical Branch, 301 University Boulevard, Galveston, Texas 77555–0830, United States of America
| | - Maria-Adelaide Micci
- Department of Anesthesiology, The University of Texas Medical Branch, 301 University Boulevard, Galveston, Texas 77555–0830, United States of America
| | - Isabella G. Taglialatela
- Department of Anesthesiology, The University of Texas Medical Branch, 301 University Boulevard, Galveston, Texas 77555–0830, United States of America
| | - Judy L. Hellmich
- Department of Anesthesiology, The University of Texas Medical Branch, 301 University Boulevard, Galveston, Texas 77555–0830, United States of America
| | - Harris A. Weisz
- Department of Anesthesiology, The University of Texas Medical Branch, 301 University Boulevard, Galveston, Texas 77555–0830, United States of America
| | - Min Bi
- Department of Anesthesiology, The University of Texas Medical Branch, 301 University Boulevard, Galveston, Texas 77555–0830, United States of America
| | - Donald S. Prough
- Department of Anesthesiology, The University of Texas Medical Branch, 301 University Boulevard, Galveston, Texas 77555–0830, United States of America
| | - Douglas S. DeWitt
- Department of Anesthesiology, The University of Texas Medical Branch, 301 University Boulevard, Galveston, Texas 77555–0830, United States of America
| | - Helen L. Hellmich
- Department of Anesthesiology, The University of Texas Medical Branch, 301 University Boulevard, Galveston, Texas 77555–0830, United States of America
- * E-mail:
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Toldo S, Mezzaroma E, Mauro AG, Salloum F, Van Tassell BW, Abbate A. The inflammasome in myocardial injury and cardiac remodeling. Antioxid Redox Signal 2015; 22:1146-61. [PMID: 25330141 DOI: 10.1089/ars.2014.5989] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
SIGNIFICANCE An inflammatory response follows an injury of any nature, and while such a response is an attempt to promote healing, it may, itself, result in further injury. RECENT ADVANCES The inflammasome is a macromolecular structure recently recognized as a central mediator in the acute inflammatory response. The inflammasome senses the injury and it amplifies the response by leading to the release of powerful pro-inflammatory cytokines, interleukin-1β (IL-1β) and IL-18. CRITICAL ISSUES The activation of the inflammasome in the heart during ischemic and nonischemic injury represents an exaggerated response to sterile injury and promotes adverse cardiac remodeling and failure. FUTURE DIRECTIONS Pilot clinical trials have explored blockade of the inflammasome-derived IL-1β and have shown beneficial effects on cardiac function. Additional clinical studies testing this approach are warranted. Moreover, specific inflammasome inhibitors that are ready for clinical use are currently lacking.
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Affiliation(s)
- Stefano Toldo
- 1 VCU Pauley Heart Center, Virginia Commonwealth University , Richmond, Virginia
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Liang J, Zhao H, Yao L, Tang H, Dong H, Wu Y, Liu L, Zou F, Cai S. Phosphatidylinositol 3-kinases pathway mediates lung caspase-1 activation and high mobility group box 1 production in a toluene-diisocyanate induced murine asthma model. Toxicol Lett 2015; 236:25-33. [PMID: 25929181 DOI: 10.1016/j.toxlet.2015.04.011] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Revised: 04/22/2015] [Accepted: 04/23/2015] [Indexed: 02/07/2023]
Abstract
We have previously demonstrated that downregulating HMGB1 decreases airway neutrophil inflammation in a toluene-diisocyanate (TDI)-induced murine asthma model, yet how HMGB1 is regulated in the lung remains uncertain. In this study, we intended to explore whether PI3K signaling pathway mediates pulmonary HMGB1 production in TDI-induced asthma model and the possible roles of NLRP3 inflammasome and caspase-1 in this process. BALB/c mice were sensitized and challenged with TDI to establish a TDI-induced asthma model. LY294002, a specific inhibitor of PI3K, was given intratracheally 1h before each challenge. Here we showed that airway hypersensitivity, airway infiltration of neutrophils and eosinophils, serum IgE and IL-4 in supernatant of cervical lymphocytes in TDI induced asthmatic mice were all markedly decreased by LY294002, accompanied by suppressed pulmonary expression of HMGB1. At the same time, we observed elevated protein levels of cleaved caspase-1 and IL-1β after TDI challenge, as well as increased immunoreactivity in lung, all of which were significantly recovered by LY294002. While both the protein expression and immunodistribution of NLRP3 in the lung stayed unchanged. These data suggest that PI3K mediates lung caspase-1 activation and HMGB1 production in TDI-induced murine asthma model.
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Affiliation(s)
- Junjie Liang
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Haijin Zhao
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Lihong Yao
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Haixiong Tang
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Hangming Dong
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Yue Wu
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Laiyu Liu
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Fei Zou
- School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou 510515, China
| | - Shaoxi Cai
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
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Zhang X, Wang G, Gurley EC, Zhou H. Flavonoid apigenin inhibits lipopolysaccharide-induced inflammatory response through multiple mechanisms in macrophages. PLoS One 2014; 9:e107072. [PMID: 25192391 PMCID: PMC4156420 DOI: 10.1371/journal.pone.0107072] [Citation(s) in RCA: 142] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 08/12/2014] [Indexed: 12/31/2022] Open
Abstract
Background Apigenin is a non-toxic natural flavonoid that is abundantly present in common fruits and vegetables. It has been reported that apigenin has various beneficial health effects such as anti-inflammation and chemoprevention. Multiple studies have shown that inflammation is an important risk factor for atherosclerosis, diabetes, sepsis, various liver diseases, and other metabolic diseases. Although it has been long realized that apigenin has anti-inflammatory activities, the underlying functional mechanisms are still not fully understood. Methodology and Principal Findings In the present study, we examined the effect of apigenin on LPS-induced inflammatory response and further elucidated the potential underlying mechanisms in human THP-1-induced macrophages and mouse J774A.1 macrophages. By using the PrimePCR array, we were able to identify the major target genes regulated by apigenin in LPS-mediated immune response. The results indicated that apigenin significantly inhibited LPS-induced production of pro-inflammatory cytokines, such as IL-6, IL-1β, and TNF-α through modulating multiple intracellular signaling pathways in macrophages. Apigenin inhibited LPS-induced IL-1β production by inhibiting caspase-1 activation through the disruption of the NLRP3 inflammasome assembly. Apigenin also prevented LPS-induced IL-6 and IL-1β production by reducing the mRNA stability via inhibiting ERK1/2 activation. In addition, apigenin significantly inhibited TNF-α and IL-1β-induced activation of NF-κB. Conclusion and Significance Apigenin Inhibits LPS-induced Inflammatory Response through multiple mechanisms in macrophages. These results provided important scientific evidences for the potential application of apigenin as a therapeutic agent for inflammatory diseases.
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Affiliation(s)
- Xiaoxuan Zhang
- Center of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing, P. R. China
- Department of Microbiology & Immunology, Virginia Commonwealth University, Richmond, Virginia, United States of America
| | - Guangji Wang
- Center of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing, P. R. China
- * E-mail: (HZ); (GW)
| | - Emily C. Gurley
- Department of Microbiology & Immunology, Virginia Commonwealth University, Richmond, Virginia, United States of America
| | - Huiping Zhou
- Department of Microbiology & Immunology, Virginia Commonwealth University, Richmond, Virginia, United States of America
- Department of Internal Medicine/Gastroenterology and McGuire Veterans Affairs Medical Center, Richmond, Virginia, United States of America
- School of Pharmacy, Wenzhou Medical University, Wenzhou, P. R. China
- * E-mail: (HZ); (GW)
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