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Reuven AD, Mwaura BW, Bliska JB. ExoS Effector in Pseudomonas aeruginosa Hyperactive Type III Secretion System Mutant Promotes Enhanced Plasma Membrane Rupture in Neutrophils. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.24.577040. [PMID: 38328038 PMCID: PMC10849719 DOI: 10.1101/2024.01.24.577040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Pseudomonas aeruginosa is an opportunistic bacterial pathogen responsible for a large percentage of airway infections that cause morbidity and mortality in immunocompromised patients, especially those with cystic fibrosis (CF). One important P. aeruginosa virulence factor is a type III secretion system (T3SS) that translocates effectors into host cells. ExoS is a T3SS effector with ADP ribosyltransferase (ADPRT) activity. The ADPRT activity of ExoS promotes P. aeruginosa virulence by inhibiting phagocytosis and limiting the oxidative burst in neutrophils. The P. aeruginosa T3SS also translocates flagellin, which can activate the NLRC4 inflammasome, resulting in: 1) gasdermin-D (GSDMD) pores, release of IL-1β and pyroptosis; and 2) histone 3 citrullination (CitH3) and decondensation and expansion of nuclear DNA into the cytosol. However, recent studies with the P. aeruginosa laboratory strain PAO1 indicate that ExoS ADPRT activity inhibits activation of the NLRC4 inflammasome in neutrophils. Here, an ExoS+ CF clinical isolate of P. aeruginosa with a hyperactive T3SS was identified. Variants of the hyperactive T3SS mutant or PAO1 were used to infect neutrophils from C57BL/6 mice or mice engineered to have a CF genotype or a defect in inflammasome assembly. Responses to NLRC4 inflammasome assembly or ExoS ADPRT activity were assayed, results of which were found to be similar for C57BL/6 or CF neutrophils. The hyperactive T3SS mutant had enhanced resistance to neutrophil killing, like previously identified hypervirulent P. aeruginosa isolates. ExoS ADPRT activity in the hyperactive T3SS mutant regulated inflammasome and nuclear DNA decondensation responses like PAO1 but promoted enhanced CitH3 and plasma membrane rupture (PMR). Glycine supplementation inhibited PMR caused by the hyperactive T3SS mutant, suggesting ninjurin-1 is required for this process. These results identify enhanced neutrophil PMR as a pathogenic activity of ExoS ADPRT in a hypervirulent P. aeruginosa isolate.
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Affiliation(s)
- Arianna D. Reuven
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth College, Hanover, NH, USA
| | - Bethany W. Mwaura
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth College, Hanover, NH, USA
| | - James B. Bliska
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth College, Hanover, NH, USA
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Jiang Y, Gao S, Chen Z, Zhao X, Gu J, Wu H, Liao Y, Wang J, Chen W. Pyroptosis in septic lung injury: Interactions with other types of cell death. Biomed Pharmacother 2023; 169:115914. [PMID: 38000360 DOI: 10.1016/j.biopha.2023.115914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 11/09/2023] [Accepted: 11/20/2023] [Indexed: 11/26/2023] Open
Abstract
Sepsis is a life-threatening systemic inflammatory response syndrome caused by the host imbalanced response to infection. Lung injury is the most common complication of sepsis and one of the leading causes of patient death. Pyroptosis is a specific programmed cell death characterized by the release of inflammatory cytokines. Appropriate pyroptosis can reduce tissue damage and exert a protective effect against infection during sepsis. However, overactivated pyroptosis results in massive cell death, leading to septic shock, multiple organ dysfunction syndrome, and even an increased risk of secondary infection. Recent studies suggest that pyroptosis can interact with and cross-regulate other types of cell death programs to establish a complex network of cell death, which participates in the occurrence and development of septic lung injury. This review will focus on the interactions between pyroptosis and other types of cell death, including apoptosis, necroptosis, PANoptosis, NETosis, autophagy, and ferroptosis, to summarize the role of pyroptosis in sepsis-induced lung injury, and will discuss the potential therapeutic strategies of targeting pyroptosis during sepsis treatment.
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Affiliation(s)
- Yi Jiang
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China; Department of Anesthesiology, Shanghai Geriatric Medical Center, Shanghai 201104, China; Department of Anesthesiology, Qingpu Branch of Zhongshan Hospital, Fudan University, Shanghai 201799, China; Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai 200032, China
| | - Shenjia Gao
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China; Department of Anesthesiology, Shanghai Geriatric Medical Center, Shanghai 201104, China; Department of Anesthesiology, Qingpu Branch of Zhongshan Hospital, Fudan University, Shanghai 201799, China; Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai 200032, China
| | - Zhaoyuan Chen
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China; Department of Anesthesiology, Shanghai Geriatric Medical Center, Shanghai 201104, China; Department of Anesthesiology, Qingpu Branch of Zhongshan Hospital, Fudan University, Shanghai 201799, China; Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai 200032, China
| | - Xiaoqiang Zhao
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Institutes of Integrative Medicine, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Jiahui Gu
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China; Department of Anesthesiology, Shanghai Geriatric Medical Center, Shanghai 201104, China; Department of Anesthesiology, Qingpu Branch of Zhongshan Hospital, Fudan University, Shanghai 201799, China; Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai 200032, China
| | - Han Wu
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China; Department of Anesthesiology, Shanghai Geriatric Medical Center, Shanghai 201104, China; Department of Anesthesiology, Qingpu Branch of Zhongshan Hospital, Fudan University, Shanghai 201799, China; Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai 200032, China
| | - Yun Liao
- Shanghai Medical College of Fudan University, Shanghai 200032, China
| | - Jun Wang
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Institutes of Integrative Medicine, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China.
| | - Wankun Chen
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China; Department of Anesthesiology, Shanghai Geriatric Medical Center, Shanghai 201104, China; Department of Anesthesiology, Qingpu Branch of Zhongshan Hospital, Fudan University, Shanghai 201799, China; Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai 200032, China.
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Xiao Y, Cheng Y, Liu WJ, Liu K, Wang Y, Xu F, Wang DM, Yang Y. Effects of neutrophil fate on inflammation. Inflamm Res 2023; 72:2237-2248. [PMID: 37925664 DOI: 10.1007/s00011-023-01811-2] [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: 05/10/2023] [Revised: 09/18/2023] [Accepted: 10/24/2023] [Indexed: 11/07/2023] Open
Abstract
INTRODUCTION Neutrophils are important participants in the innate immune response. They rapidly and efficiently identify and clear infectious agents by expressing large numbers of membrane receptors. Upon tissue injury or pathogen invasion, neutrophils are the first immune cells to reach the site of injury and participate in the inflammatory response. MATERIALS AND METHODS A thorough search on PubMed related to neutrophil death or clearance pathways was performed. CONCLUSION Inflammatory response and tissue damage can be aggravated when neutrophils are not removed rapidly from the site of injury. Recent studies have shown that neutrophils can be cleared through a variety of pathways, including non-inflammatory and inflammatory death, as well as reverse migration. Non-inflammatory death pathways include apoptosis and autophagy. Inflammatory death pathways include necroptosis, pyroptosis and NETosis. This review highlights the basic properties of neutrophils and the impact of their clearance pathways on the inflammatory response.
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Affiliation(s)
- Yuan Xiao
- Department of Anesthesiology, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, 421001, China
| | - Yang Cheng
- Department of Anesthesiology, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, 421001, China
| | - Wen-Jie Liu
- Department of Anesthesiology, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, 421001, China
| | - Kun Liu
- Department of Anesthesiology, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, 421001, China
| | - Yan Wang
- Department of Anesthesiology, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, 421001, China
| | - Feng Xu
- Department of Anesthesiology, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, 421001, China
| | - De-Ming Wang
- Department of Anesthesiology, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, 421001, China.
| | - Yi Yang
- Department of Anesthesiology, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, 421001, China.
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Williams JG, Sluyter R, Sanderson-Smith ML. Streptococcus pyogenes emm98.1 variants activate inflammatory caspases in human neutrophils. Virulence 2023; 14:2264090. [PMID: 37830540 PMCID: PMC10578187 DOI: 10.1080/21505594.2023.2264090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 09/08/2023] [Indexed: 10/14/2023] Open
Abstract
ABBREVIATIONS CovRS, control of virulence regulatory system; GAS, Group A Streptococcus; PMN, polymorphonuclear leukocyte.
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Affiliation(s)
- Jonathan G. Williams
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales, Australia
- NHMRC Clinical Trials Centre, University of Sydney, Sydney, New South Wales, Australia
| | - Ronald Sluyter
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales, Australia
| | - Martina L. Sanderson-Smith
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales, Australia
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Pinilla M, Mazars R, Vergé R, Gorse L, Paradis M, Suire B, Santoni K, Robinson KS, Toh GA, Prouvensier L, Leon-Icaza SA, Hessel A, Péricat D, Murris M, Guet-Revillet H, Henras A, Buyck J, Ravet E, Zhong FL, Cougoule C, Planès R, Meunier E. EEF2-inactivating toxins engage the NLRP1 inflammasome and promote epithelial barrier disruption. J Exp Med 2023; 220:e20230104. [PMID: 37642996 PMCID: PMC10465324 DOI: 10.1084/jem.20230104] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 06/02/2023] [Accepted: 07/14/2023] [Indexed: 08/31/2023] Open
Abstract
Human airway and corneal epithelial cells, which are critically altered during chronic infections mediated by Pseudomonas aeruginosa, specifically express the inflammasome sensor NLRP1. Here, together with a companion study, we report that the NLRP1 inflammasome detects exotoxin A (EXOA), a ribotoxin released by P. aeruginosa type 2 secretion system (T2SS), during chronic infection. Mechanistically, EXOA-driven eukaryotic elongation factor 2 (EEF2) ribosylation and covalent inactivation promote ribotoxic stress and subsequent NLRP1 inflammasome activation, a process shared with other EEF2-inactivating toxins, diphtheria toxin and cholix toxin. Biochemically, irreversible EEF2 inactivation triggers ribosome stress-associated kinases ZAKα- and P38-dependent NLRP1 phosphorylation and subsequent proteasome-driven functional degradation. Finally, cystic fibrosis cells from patients exhibit exacerbated P38 activity and hypersensitivity to EXOA-induced ribotoxic stress-dependent NLRP1 inflammasome activation, a process inhibited by the use of ZAKα inhibitors. Altogether, our results show the importance of P. aeruginosa virulence factor EXOA at promoting NLRP1-dependent epithelial damage and identify ZAKα as a critical sensor of virulence-inactivated EEF2.
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Affiliation(s)
- Miriam Pinilla
- Institute of Pharmacology and Structural Biology, University of Toulouse, CNRS, Toulouse, France
| | - Raoul Mazars
- Institute of Pharmacology and Structural Biology, University of Toulouse, CNRS, Toulouse, France
| | - Romain Vergé
- Institute of Pharmacology and Structural Biology, University of Toulouse, CNRS, Toulouse, France
| | - Leana Gorse
- Institute of Pharmacology and Structural Biology, University of Toulouse, CNRS, Toulouse, France
| | - Margaux Paradis
- Institute of Pharmacology and Structural Biology, University of Toulouse, CNRS, Toulouse, France
| | - Bastien Suire
- Institute of Pharmacology and Structural Biology, University of Toulouse, CNRS, Toulouse, France
| | - Karin Santoni
- Institute of Pharmacology and Structural Biology, University of Toulouse, CNRS, Toulouse, France
| | - Kim Samirah Robinson
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
- Skin Research Institute of Singapore, Singapore, Singapore
| | - Gee Ann Toh
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
- Skin Research Institute of Singapore, Singapore, Singapore
| | - Laure Prouvensier
- UFR Medicine and Pharmacy, INSERM U1070, University of Poitiers, Poitiers, France
| | | | - Audrey Hessel
- Institute of Pharmacology and Structural Biology, University of Toulouse, CNRS, Toulouse, France
| | - David Péricat
- Institute of Pharmacology and Structural Biology, University of Toulouse, CNRS, Toulouse, France
| | - Marlène Murris
- Department of Pneumology, Hospital Larrey, Toulouse, France
- University Hospital of Toulouse, Toulouse, France
| | | | - Anthony Henras
- Center of Integrative Biology, University of Toulouse, CNRS, Toulouse, France
| | - Julien Buyck
- UFR Medicine and Pharmacy, INSERM U1070, University of Poitiers, Poitiers, France
| | | | - Franklin L. Zhong
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
- Skin Research Institute of Singapore, Singapore, Singapore
| | - Céline Cougoule
- Institute of Pharmacology and Structural Biology, University of Toulouse, CNRS, Toulouse, France
| | - Rémi Planès
- Institute of Pharmacology and Structural Biology, University of Toulouse, CNRS, Toulouse, France
- Invivogen, Toulouse, France
| | - Etienne Meunier
- Institute of Pharmacology and Structural Biology, University of Toulouse, CNRS, Toulouse, France
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Han S, Moon S, Chung YW, Ryu JH. NADPH Oxidase 4-mediated Alveolar Macrophage Recruitment to Lung Attenuates Neutrophilic Inflammation in Staphylococcus aureus Infection. Immune Netw 2023; 23:e42. [PMID: 37970233 PMCID: PMC10643333 DOI: 10.4110/in.2023.23.e42] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 09/25/2023] [Accepted: 10/22/2023] [Indexed: 11/17/2023] Open
Abstract
When the lungs are infected with bacteria, alveolar macrophages (AMs) are recruited to the site and play a crucial role in protecting the host by reducing excessive lung inflammation. However, the regulatory mechanisms that trigger the recruitment of AMs to lung alveoli during an infection are still not fully understood. In this study, we identified a critical role for NADPH oxidase 4 (NOX4) in the recruitment of AMs during Staphylococcus aureus lung infection. We found that NOX4 knockout (KO) mice showed decreased recruitment of AMs and increased lung neutrophils and injury in response to S. aureus infection compared to wild-type (WT) mice. Interestingly, the burden of S. aureus in the lungs was not different between NOX4 KO and WT mice. Furthermore, we observed that depletion of AMs in WT mice during S. aureus infection increased the number of neutrophils and lung injury to a similar level as that observed in NOX4 KO mice. Additionally, we found that expression of intercellular adhesion molecule-1 (ICAM1) in NOX4 KO mice-derived lung endothelial cells was lower than that in WT mice-derived endothelial cells. Therefore, we conclude that NOX4 plays a crucial role in inducing the recruitment of AMs by controlling ICAM1 expression in lung endothelial cells, which is responsible for resolving lung inflammation during acute S. aureus infection.
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Affiliation(s)
- Seunghan Han
- Department of Biomedical Sciences, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Sungmin Moon
- Department of Biomedical Sciences, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Youn Wook Chung
- Department of Biomedical Sciences, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Ji-Hwan Ryu
- Department of Biomedical Sciences, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul 03722, Korea
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7
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Zhang Z, Jin L, Liu L, Zhou M, Zhang X, Zhang L. The intricate relationship between autoimmunity disease and neutrophils death patterns: a love-hate story. Apoptosis 2023; 28:1259-1284. [PMID: 37486407 DOI: 10.1007/s10495-023-01874-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/11/2023] [Indexed: 07/25/2023]
Abstract
Autoimmune diseases are pathological conditions that result from the misidentification of self-antigens in immune system, leading to host tissue damage and destruction. These diseases can affect different organs and systems, including the blood, joints, skin, and muscles. Despite the significant progress made in comprehending the underlying pathogenesis, the complete mechanism of autoimmune disease is still not entirely understood. In autoimmune diseases, the innate immunocytes are not functioning properly: they are either abnormally activated or physically disabled. As a vital member of innate immunocyte, neutrophils and their modes of death are influenced by the microenvironment of different autoimmune diseases due to their short lifespan and diverse death modes. Related to neutrophil death pathways, apoptosis is the most frequent cell death form of neutrophil non-lytic morphology, delayed or aberrant apoptosis may contribute to the development anti-neutrophil cytoplasmic antibodies (ANCA)-associated vasculitis (AAV). In addition, NETosis, necroptosis and pyroptosis which are parts of lytic morphology exacerbate disease progression through various mechanisms in autoimmune diseases. This review aims to summarize recent advancements in understanding neutrophil death modes in various autoimmune diseases and provide insights into the development of novel therapeutic approaches for autoimmune diseases.
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Affiliation(s)
- Ziwei Zhang
- Institute of Clinical Pharmacology, Anhui Medical University, Hefei, 230032, China
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, China
- Anti-Inflammatory Immune Drugs Collaborative Innovation Center, Hefei, Anhui Province, China
| | - Lin Jin
- Institute of Clinical Pharmacology, Anhui Medical University, Hefei, 230032, China
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, China
- Anti-Inflammatory Immune Drugs Collaborative Innovation Center, Hefei, Anhui Province, China
| | - Lianghu Liu
- Institute of Clinical Pharmacology, Anhui Medical University, Hefei, 230032, China
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, China
- Anti-Inflammatory Immune Drugs Collaborative Innovation Center, Hefei, Anhui Province, China
| | - Mengqi Zhou
- Institute of Clinical Pharmacology, Anhui Medical University, Hefei, 230032, China
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, China
- Anti-Inflammatory Immune Drugs Collaborative Innovation Center, Hefei, Anhui Province, China
| | - Xianzheng Zhang
- Institute of Clinical Pharmacology, Anhui Medical University, Hefei, 230032, China.
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, China.
- Anti-Inflammatory Immune Drugs Collaborative Innovation Center, Hefei, Anhui Province, China.
| | - Lingling Zhang
- Institute of Clinical Pharmacology, Anhui Medical University, Hefei, 230032, China.
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, China.
- Anti-Inflammatory Immune Drugs Collaborative Innovation Center, Hefei, Anhui Province, China.
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Abstract
The immune system of multicellular organisms protects them from harmful microbes. To establish an infection in the face of host immune responses, pathogens must evolve specific strategies to target immune defense mechanisms. One such defense is the formation of intracellular protein complexes, termed inflammasomes, that are triggered by the detection of microbial components and the disruption of homeostatic processes that occur during bacterial infection. Formation of active inflammasomes initiates programmed cell death pathways via activation of inflammatory caspases and cleavage of target proteins. Inflammasome-activated cell death pathways such as pyroptosis lead to proinflammatory responses that protect the host. Bacterial infection has the capacity to influence inflammasomes in two distinct ways: activation and perturbation. In this review, we discuss how bacterial activities influence inflammasomes, and we discuss the consequences of inflammasome activation or evasion for both the host and pathogen.
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Affiliation(s)
- Beatrice I Herrmann
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; ,
- Cell and Molecular Biology Graduate Group, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - James P Grayczyk
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; ,
- Current affiliation: Oncology Discovery, Abbvie, Inc., Chicago, Illinois, USA;
| | - Igor E Brodsky
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; ,
- Cell and Molecular Biology Graduate Group, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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Huber A, Jose S, Kassam A, Weghorn KN, Powers-Fletcher M, Sharma D, Mukherjee A, Mathew A, Kulkarni N, Chandramouli S, Alder MN, Madan R. Olfactomedin-4 + neutrophils exacerbate intestinal epithelial damage and worsen host survival after Clostridioides difficile infection. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.21.553751. [PMID: 37662327 PMCID: PMC10473617 DOI: 10.1101/2023.08.21.553751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
Neutrophils are key first responders to Clostridioides difficile infection (CDI). Excessive tissue and blood neutrophils are associated with worse histopathology and adverse outcomes, however their functional role during CDI remains poorly defined. Utilizing intestinal epithelial cell (IEC)-neutrophil co-cultures and a pre-clinical animal model of CDI, we show that neutrophils exacerbate C. difficile -induced IEC injury. We utilized cutting-edge single-cell transcriptomics to illuminate neutrophil subtypes and biological pathways that could exacerbate CDI-associated IEC damage. As such, we have established the first transcriptomics atlas of bone marrow (BM), blood, and colonic neutrophils after CDI. We found that CDI altered the developmental trajectory of BM and blood neutrophils towards populations that exhibit gene signatures associated with pro-inflammatory responses and neutrophil-mediated tissue damage. Similarly, the transcriptomic signature of colonic neutrophils was consistent with hyper-inflammatory and highly differentiated cells that had amplified expression of cytokine-mediated signaling and degranulation priming genes. One of the top 10 variable features in colonic neutrophils was the gene for neutrophil glycoprotein, Olfactomedin 4 (OLFM4). CDI enhanced OLFM4 mRNA and protein expression in neutrophils, and OLFM4 + cells aggregated to areas of severe IEC damage. Compared to uninfected controls, both humans and mice with CDI had higher concentrations of circulating OLFM4; and in mice, OLFM4 deficiency resulted in faster recovery and better survival after infection. Collectively, these studies provide novel insights into neutrophil-mediated pathology after CDI and highlight the pathogenic role of OLFM4 + neutrophils in regulating CDI-induced IEC damage. One Sentence Summary Utilizing single-cell transcriptomics, IEC-epithelial co-cultures, and pre-clinical models of CDI, we have identified a subset of neutrophils that are marked by OLFM4 expression as pathogenic determinants of IEC barrier damage after CDI.
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10
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Lee E, Song CH, Bae SJ, Ha KT, Karki R. Regulated cell death pathways and their roles in homeostasis, infection, inflammation, and tumorigenesis. Exp Mol Med 2023; 55:1632-1643. [PMID: 37612410 PMCID: PMC10474065 DOI: 10.1038/s12276-023-01069-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 06/01/2023] [Accepted: 06/13/2023] [Indexed: 08/25/2023] Open
Abstract
Pyroptosis, apoptosis, necroptosis, and ferroptosis, which are the most well-studied regulated cell death (RCD) pathways, contribute to the clearance of infected or potentially neoplastic cells, highlighting their importance in homeostasis, host defense against pathogens, cancer, and a wide range of other pathologies. Although these four RCD pathways employ distinct molecular and cellular processes, emerging genetic and biochemical studies have suggested remarkable flexibility and crosstalk among them. The crosstalk among pyroptosis, apoptosis and necroptosis pathways is more evident in cellular responses to infection, which has led to the conceptualization of PANoptosis. In this review, we provide a brief overview of the molecular mechanisms of pyroptosis, apoptosis, necroptosis, and ferroptosis and their importance in maintaining homeostasis. We discuss the intricate crosstalk among these RCD pathways and the current evidence supporting PANoptosis, focusing on infectious diseases and cancer. Understanding the fundamental processes of various cell death pathways is crucial to inform the development of new therapeutics against many diseases, including infection, sterile inflammation, and cancer.
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Affiliation(s)
- Ein Lee
- Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, 03080, South Korea
| | - Chang-Hyun Song
- Department of Biological Sciences, College of Natural Science, Seoul National University, Seoul, 08826, South Korea
| | - Sung-Jin Bae
- Department of Molecular Biology and Immunology, College of Medicine, Kosin University, Busan, 49267, South Korea
| | - Ki-Tae Ha
- Department of Korean Medical Science, School of Korean Medicine, Pusan National University, Yangsan, 50612, South Korea
| | - Rajendra Karki
- Department of Biological Sciences, College of Natural Science, Seoul National University, Seoul, 08826, South Korea.
- Nexus Institute of Research and Innovation (NIRI), Kathmandu, Nepal.
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11
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Liu S, Huang B, Cao J, Wang Y, Xiao H, Zhu Y, Zhang H. ROS fine-tunes the function and fate of immune cells. Int Immunopharmacol 2023; 119:110069. [PMID: 37150014 DOI: 10.1016/j.intimp.2023.110069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 03/11/2023] [Accepted: 03/20/2023] [Indexed: 05/09/2023]
Abstract
The redox state is essential to the process of cell life, which determines cell fate. As an important signaling molecule of the redox state, reactive oxygen species (ROS) are crucial for the homeostasis of immune cells and participate in the pathological processes of different diseases. We discuss the underlying mechanisms and possible signaling pathways of ROS to fine-tune the proliferation, differentiation, polarization and function of immune cells, including T cells, B cells, neutrophils, macrophages, myeloid-derived inhibitory cells (MDSCs) and dendritic cells (DCs). We further emphasize how excessive ROS lead to programmed immune cell death such as apoptosis, ferroptosis, pyroptosis, NETosis and necroptosis, providing valuable insights for future therapeutic strategies in human diseases.
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Affiliation(s)
- Shiyu Liu
- Department of Clinical Medicine, Xiangya School of Medicine, Central South University, 410008 Changsha, China
| | - Benqi Huang
- Department of Clinical Medicine, Xiangya School of Medicine, Central South University, 410008 Changsha, China
| | - Jingdong Cao
- Department of Clinical Medicine, Xiangya School of Medicine, Central South University, 410008 Changsha, China
| | - Yifei Wang
- Department of Clinical Medicine, Xiangya School of Medicine, Central South University, 410008 Changsha, China
| | - Hao Xiao
- Department of Clinical Medicine, Xiangya School of Medicine, Central South University, 410008 Changsha, China
| | - Yaxi Zhu
- Sepsis Translational Medicine Key Lab of Hunan Province, Department of Pathophysiology, School of Basic Medical Sciences, Central South University, 410008 Changsha, China.
| | - Huali Zhang
- Sepsis Translational Medicine Key Lab of Hunan Province, Department of Pathophysiology, School of Basic Medical Sciences, Central South University, 410008 Changsha, China.
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12
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Tan Y, Liu Q, Li Z, Yang S, Cui L. Pyroptosis-triggered pathogenesis: New insights on antiphospholipid syndrome. Front Immunol 2023; 14:1155222. [PMID: 37063905 PMCID: PMC10102483 DOI: 10.3389/fimmu.2023.1155222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 03/13/2023] [Indexed: 04/03/2023] Open
Abstract
APS (antiphospholipid syndrome) is a systematic autoimmune disease presenting with the high levels of aPLs (antiphospholipid antibodies). These autoantibodies are involved in various clinical manifestations, mainly including arterial or venous thrombosis formation, proinflammatory response, and recurrent pregnant loss. Pyroptosis is a form of lytic programmed cell death, and it aggravates autoimmune diseases progression via activating NOD-like receptors, especially the NLRP3 inflammasome and its downstream inflammatory factors IL (interleukin)-1β and IL-18. However, the underlying mechanisms of pyroptosis-induced APS progression remain to be elucidated. ECs (endothelial cells), monocytes, platelets, trophoblasts, and neutrophils are prominent participants in APS development. Of significance, pyroptosis of APS-related cells leads to the excessive release of proinflammatory and prothrombotic factors, which are the primary contributors to APOs (adverse pregnancy outcomes), thrombosis formation, and autoimmune dysfunction in APS. Furthermore, pyroptosis-associated medicines have made encouraging advancements in attenuating inflammation and thrombosis. Given the potential of pyroptosis in regulating APS development, this review would systematically expound the molecular mechanisms of pyroptosis, and elaborate the role of pyroptosis-mediated cellular effects in APS progression. Lastly, the prospective therapeutic approaches for APS would be proposed based on the regulation of pyroptosis.
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Affiliation(s)
- Yuan Tan
- Department of Laboratory Medicine, Peking University Third Hospital, Beijing, China
- Core Unit of National Clinical Research Center for Laboratory Medicine, Peking University Third Hospital, Beijing, China
- Institute of Medical Technology, Peking University Health Science Center, Beijing, China
| | - Qi Liu
- Department of Laboratory Medicine, Peking University Third Hospital, Beijing, China
- Core Unit of National Clinical Research Center for Laboratory Medicine, Peking University Third Hospital, Beijing, China
- Institute of Medical Technology, Peking University Health Science Center, Beijing, China
| | - Zhongxin Li
- Department of Laboratory Medicine, Peking University Third Hospital, Beijing, China
- Core Unit of National Clinical Research Center for Laboratory Medicine, Peking University Third Hospital, Beijing, China
| | - Shuo Yang
- Department of Laboratory Medicine, Peking University Third Hospital, Beijing, China
- Core Unit of National Clinical Research Center for Laboratory Medicine, Peking University Third Hospital, Beijing, China
| | - Liyan Cui
- Department of Laboratory Medicine, Peking University Third Hospital, Beijing, China
- Core Unit of National Clinical Research Center for Laboratory Medicine, Peking University Third Hospital, Beijing, China
- *Correspondence: Liyan Cui,
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13
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Nunoi H, Nakamura H, Nishimura T, Matsukura M. Recent topics and advanced therapies in chronic granulomatous disease. Hum Cell 2023; 36:515-527. [PMID: 36534309 DOI: 10.1007/s13577-022-00846-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 12/06/2022] [Indexed: 12/23/2022]
Abstract
Chronic granulomatous disease (CGD) is a primary immunodeficiency characterized by the inability of phagocytes to produce reactive oxygen species (ROS) owing to a defect in any of the five components (CYBB/gp91phox, CYBA/p22phox, NCF1/p47phox, NCF2/p67phox, and NCF4/p40phox) and a concomitant regulatory component of Rac1/2 and CYBC1/Eros of the nicotinamide adenine dinucleotide phosphate (NADPH) oxidase complex. Patients with CGD are at an increased risk of life-threatening infections caused by catalase-positive bacteria and fungi and of inflammatory complications such as CGD colitis. Antimicrobial and azole antifungal prophylaxes have considerably reduced the incidence and severity of bacterial and improved fungal infections and overall survival. CGD studies have revealed the precise epidemiology and role of NADPH oxidase in innate immunity which has led to a new understanding of the importance of phagocyte oxygen metabolism in various host-defense systems and the fields leading to cell death processes. Moreover, ROS plays central roles in the determination of cell fate as secondary messengers and by modifying of various signaling molecules. According to this increasing knowledge about the effects of ROS on the inflammasomal system, immunomodulatory treatments, such as IFN-γ and anti-IL-1 antibodies, have been established. This review covers the current topics in CGD and the relationship between ROS and ROS-mediated pathophysiological phenomena. In addition to the shirt summary of hematopoietic stem cell transplantation and gene therapy, we introduce a novel ROS-producing enzyme replacement therapy using PEG-fDAO to compensate for NADPH oxidase deficiency.
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Affiliation(s)
- Hiroyuki Nunoi
- Division of Pediatrics, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake-cho, Miyazaki-City, Miyazaki, 889-1692, Japan. .,Aisenkai Nichinan Hospital, 3649-2 Kazeta, Nichinan-City, Miyazaki, 887-0034, Japan.
| | - Hideki Nakamura
- Laboratory of Environmental Science and Technology, Faculty of Pharmaceutical Sciences, Sojo University, 4-22-1 Ikeda, Nishi-Ku, Kumamoto City, 860-0082, Japan
| | - Toyoki Nishimura
- Division of Pediatrics, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake-cho, Miyazaki-City, Miyazaki, 889-1692, Japan
| | - Makoto Matsukura
- Laboratory of Clinical Pharmacology and Therapeutics, Faculty of Pharmaceutical Sciences, Sojo University, 4-22-1 Ikeda, Nishi-Ku, Kumamoto City, 860-0082, Japan
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14
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Dubyak GR, Miller BA, Pearlman E. Pyroptosis in neutrophils: Multimodal integration of inflammasome and regulated cell death signaling pathways. Immunol Rev 2023; 314:229-249. [PMID: 36656082 PMCID: PMC10407921 DOI: 10.1111/imr.13186] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Pyroptosis is a proinflammatory mode of lytic cell death mediated by accumulation of plasma membrane (PM) macropores composed of gasdermin-family (GSDM) proteins. It facilitates two major functions in innate immunity: (i) elimination of intracellular replicative niches for pathogenic bacteria; and (ii) non-classical secretion of IL-1 family cytokines that amplify host-beneficial inflammatory responses to microbial infection or tissue damage. Physiological roles for gasdermin D (GSDMD) in pyroptosis and IL-1β release during inflammasome signaling have been extensively characterized in macrophages. This involves cleavage of GSDMD by caspase-1 to generate GSDMD macropores that mediate IL-1β efflux and progression to pyroptotic lysis. Neutrophils, which rapidly accumulate in large numbers at sites of tissue infection or damage, become the predominant local source of IL-1β in coordination with their potent microbiocidal capacity. Similar to macrophages, neutrophils express GSDMD and utilize the same spectrum of diverse inflammasome platforms for caspase-1-mediated cleavage of GSDMD. Distinct from macrophages, neutrophils possess a remarkable capacity to resist progression to GSDMD-dependent pyroptotic lysis to preserve their viability for efficient microbial killing while maintaining GSDMD-dependent mechanisms for export of bioactive IL-1β. Rather, neutrophils employ cell-specific mechanisms to conditionally engage GSDMD-mediated pyroptosis in response to bacterial pathogens that use neutrophils as replicative niches. GSDMD and pyroptosis have also been mechanistically linked to induction of NETosis, a signature neutrophil pathway that expels decondensed nuclear DNA into extracellular compartments for immobilization and killing of microbial pathogens. This review summarizes a rapidly growing number of recent studies that have produced new insights, unexpected mechanistic nuances, and some controversies regarding the regulation of, and roles for, neutrophil inflammasomes, pyroptosis, and GSDMs in diverse innate immune responses.
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Affiliation(s)
- George R. Dubyak
- Department of Physiology and Biophysics, School of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
| | - Brandon A. Miller
- Department of Physiology and Biophysics, School of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
| | - Eric Pearlman
- Department of Ophthalmology, University of California, Irvine, California, USA
- Department of Physiology and Biophysics, University of California, Irvine, California, USA
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15
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Oh C, Li L, Verma A, Reuven AD, Miao EA, Bliska JB, Aachoui Y. Neutrophil inflammasomes sense the subcellular delivery route of translocated bacterial effectors and toxins. Cell Rep 2022; 41:111688. [PMID: 36417874 PMCID: PMC9827617 DOI: 10.1016/j.celrep.2022.111688] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 05/23/2022] [Accepted: 10/27/2022] [Indexed: 11/23/2022] Open
Abstract
In neutrophils, caspase-11 cleaves gasdermin D (GSDMD), causing pyroptosis to clear cytosol-invasive bacteria. In contrast, caspase-1 also cleaves GSDMD but seems to not cause pyroptosis. Here, we show that this pyroptosis-resistant caspase-1 activation is specifically programmed by the site of translocation of the detected microbial virulence factors. We find that pyrin and NLRC4 agonists do not trigger pyroptosis in neutrophils when they access the cytosol from endosomal compartment. In contrast, when the same ligands penetrate through the plasma membrane, they cause pyroptosis. Consistently, pyrin detects extracellular Yersinia pseudotuberculosis ΔyopM in neutrophils, driving caspase-1-GSDMD pyroptosis. This pyroptotic response drives PAD4-dependent H3 citrullination and results in extrusion of neutrophil extracellular traps (NETs). Our data indicate that caspase-1, GSDMD, or PAD4 deficiency renders mice more susceptible to Y. pseudotuberculosis ΔyopM infection. Therefore, neutrophils induce pyroptosis in response to caspase-1-activating inflammasomes triggered by extracellular bacterial pathogens, but after they phagocytose pathogens, they are programmed to forego pyroptosis.
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Affiliation(s)
- Changhoon Oh
- Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Lupeng Li
- Department of Immunology and Department of Molecular Genetics and Microbiology, Duke University, Durham, NC 27710, USA; Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Ambika Verma
- Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Arianna D Reuven
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, NH 03768, USA
| | - Edward A Miao
- Department of Immunology and Department of Molecular Genetics and Microbiology, Duke University, Durham, NC 27710, USA
| | - James B Bliska
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, NH 03768, USA
| | - Youssef Aachoui
- Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA.
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16
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Chauhan D, Demon D, Vande Walle L, Paerewijck O, Zecchin A, Bosseler L, Santoni K, Planès R, Ribo S, Fossoul A, Gonçalves A, Van Gorp H, Van Opdenbosch N, Van Hauwermeiren F, Meunier E, Wullaert A, Lamkanfi M. GSDMD drives canonical inflammasome-induced neutrophil pyroptosis and is dispensable for NETosis. EMBO Rep 2022; 23:e54277. [PMID: 35899491 PMCID: PMC9535806 DOI: 10.15252/embr.202154277] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 06/17/2022] [Accepted: 07/07/2022] [Indexed: 07/22/2023] Open
Abstract
Neutrophils are the most prevalent immune cells in circulation, but the repertoire of canonical inflammasomes in neutrophils and their respective involvement in neutrophil IL-1β secretion and neutrophil cell death remain unclear. Here, we show that neutrophil-targeted expression of the disease-associated gain-of-function Nlrp3A350V mutant suffices for systemic autoinflammatory disease and tissue pathology in vivo. We confirm the activity of the canonical NLRP3 and NLRC4 inflammasomes in neutrophils, and further show that the NLRP1b, Pyrin and AIM2 inflammasomes also promote maturation and secretion of interleukin (IL)-1β in cultured bone marrow neutrophils. Notably, all tested canonical inflammasomes promote GSDMD cleavage in neutrophils, and canonical inflammasome-induced pyroptosis and secretion of mature IL-1β are blunted in GSDMD-knockout neutrophils. In contrast, GSDMD is dispensable for PMA-induced NETosis. We also show that Salmonella Typhimurium-induced pyroptosis is markedly increased in Nox2/Gp91Phox -deficient neutrophils that lack NADPH oxidase activity and are defective in PMA-induced NETosis. In conclusion, we establish the canonical inflammasome repertoire in neutrophils and identify differential roles for GSDMD and the NADPH complex in canonical inflammasome-induced neutrophil pyroptosis and mitogen-induced NETosis, respectively.
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Affiliation(s)
- Dhruv Chauhan
- Janssen Immunosciences, World Without Disease AcceleratorPharmaceutical Companies of Johnson & JohnsonBeerseBelgium
| | - Dieter Demon
- Department of Internal Medicine and PaediatricsGhent UniversityGhentBelgium
- VIB‐UGent Center for Inflammation Research, VIBGhentBelgium
| | - Lieselotte Vande Walle
- Department of Internal Medicine and PaediatricsGhent UniversityGhentBelgium
- VIB‐UGent Center for Inflammation Research, VIBGhentBelgium
| | - Oonagh Paerewijck
- Department of Internal Medicine and PaediatricsGhent UniversityGhentBelgium
| | - Annalisa Zecchin
- Janssen Immunosciences, World Without Disease AcceleratorPharmaceutical Companies of Johnson & JohnsonBeerseBelgium
| | - Leslie Bosseler
- Nonclinical Safety, Janssen Research & DevelopmentPharmaceutical Companies of Johnson & JohnsonBeerseBelgium
| | - Karin Santoni
- Institute of Pharmacology and Structural Biology (IPBS)University of Toulouse, CNRSToulouseFrance
| | - Rémi Planès
- Institute of Pharmacology and Structural Biology (IPBS)University of Toulouse, CNRSToulouseFrance
| | - Silvia Ribo
- Department of Internal Medicine and PaediatricsGhent UniversityGhentBelgium
- VIB‐UGent Center for Inflammation Research, VIBGhentBelgium
| | - Amelie Fossoul
- Department of Internal Medicine and PaediatricsGhent UniversityGhentBelgium
- VIB‐UGent Center for Inflammation Research, VIBGhentBelgium
| | - Amanda Gonçalves
- VIB‐UGent Center for Inflammation Research, VIBGhentBelgium
- VIB BioImaging CoreGhentBelgium
| | - Hanne Van Gorp
- Department of Internal Medicine and PaediatricsGhent UniversityGhentBelgium
- VIB‐UGent Center for Inflammation Research, VIBGhentBelgium
| | - Nina Van Opdenbosch
- Janssen Immunosciences, World Without Disease AcceleratorPharmaceutical Companies of Johnson & JohnsonBeerseBelgium
- Department of Internal Medicine and PaediatricsGhent UniversityGhentBelgium
- VIB‐UGent Center for Inflammation Research, VIBGhentBelgium
| | - Filip Van Hauwermeiren
- Janssen Immunosciences, World Without Disease AcceleratorPharmaceutical Companies of Johnson & JohnsonBeerseBelgium
- Department of Internal Medicine and PaediatricsGhent UniversityGhentBelgium
- VIB‐UGent Center for Inflammation Research, VIBGhentBelgium
| | - Etienne Meunier
- Institute of Pharmacology and Structural Biology (IPBS)University of Toulouse, CNRSToulouseFrance
| | - Andy Wullaert
- Department of Internal Medicine and PaediatricsGhent UniversityGhentBelgium
- VIB‐UGent Center for Inflammation Research, VIBGhentBelgium
- Laboratory of Protein Chemistry, Proteomics and Epigenetic Signalling, Department of Biomedical SciencesUniversity of AntwerpAntwerpBelgium
| | - Mohamed Lamkanfi
- Department of Internal Medicine and PaediatricsGhent UniversityGhentBelgium
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17
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NAT10 regulates neutrophil pyroptosis in sepsis via acetylating ULK1 RNA and activating STING pathway. Commun Biol 2022; 5:916. [PMID: 36068299 PMCID: PMC9448771 DOI: 10.1038/s42003-022-03868-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 08/22/2022] [Indexed: 11/28/2022] Open
Abstract
Emerging evidence suggests that pyroptosis is involved in sepsis. However, the role of neutrophil pyroptosis in sepsis and the mechanisms remains elusive. We find that N-acetyltransferase 10 (NAT10), an acetyltransferase responsible for the N4-acetylation of Cytidine (ac4C) in mRNA, is significantly downregulated in neutrophils from septic mice. Neutrophil-specific over-expression of NAT10 improves the survival and ameliorates lung injury in septic mice by inhibiting neutrophil pyroptosis. Notably, UNC-52-like kinase 1 (ULK1) is identified as the target of NAT10 in neutrophils. The decreased expression of NAT10 resultes in the decay of ULK1 transcripts and therefore the reduced expression of ULK1. As a regulator of STING phosphorylation, the loss of ULK1 enhances the activation of STING-IRF3 signaling and subsequently the elevated pyroptosis-inducing NLRP3 inflammasome in neutrophils. While over-expression of NAT10 restrains pyroptosis in neutrophils as well as septic lethality in mice by reversing the ULK1-STING-NLRP3 axis. The decreased expression of NAT10 are also observed in sepsis patients and its correlation with clinical severity is found. Collectively, our findings disclose that NAT10 is a negative regulator of neutrophil pyroptosis and its downregulation contributes to the progress of sepsis by exacerbating pyroptosis via the ULK1-STING-NLRP3 axis, therefore revealing a potential therapeutic target for sepsis. The enzyme N-acetyltransferase NAT10 is a negative regulator of neutrophil pyroptosis and its downregulation contributes to the progress of sepsis by exacerbating pyroptosis via the ULK1-STING-NLRP3 pathway.
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18
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Zhu CL, Wang Y, Liu Q, Li HR, Yu CM, Li P, Deng XM, Wang JF. Dysregulation of neutrophil death in sepsis. Front Immunol 2022; 13:963955. [PMID: 36059483 PMCID: PMC9434116 DOI: 10.3389/fimmu.2022.963955] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 08/02/2022] [Indexed: 11/13/2022] Open
Abstract
Sepsis is a prevalent disease that has alarmingly high mortality rates and, for several survivors, long-term morbidity. The modern definition of sepsis is an aberrant host response to infection followed by a life-threatening organ dysfunction. Sepsis has a complicated pathophysiology and involves multiple immune and non-immune mediators. It is now believed that in the initial stages of sepsis, excessive immune system activation and cascading inflammation are usually accompanied by immunosuppression. During the pathophysiology of severe sepsis, neutrophils are crucial. Recent researches have demonstrated a clear link between the process of neutrophil cell death and the emergence of organ dysfunction in sepsis. During sepsis, spontaneous apoptosis of neutrophils is inhibited and neutrophils may undergo some other types of cell death. In this review, we describe various types of neutrophil cell death, including necrosis, apoptosis, necroptosis, pyroptosis, NETosis, and autophagy, to reveal their known effects in the development and progression of sepsis. However, the exact role and mechanisms of neutrophil cell death in sepsis have not been fully elucidated, and this remains a major challenge for future neutrophil research. We hope that this review will provide hints for researches regarding neutrophil cell death in sepsis and provide insights for clinical practitioners.
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19
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Zhao J, Chen W, Zhang Y, Liu Q, Yang D, Wang Z. Bacterial infection induces pyroptotic signaling-mediated neutrophil extracellular traps (NETs) formation in turbot (Scophthalmus maximus). FISH & SHELLFISH IMMUNOLOGY 2022; 127:982-990. [PMID: 35870743 DOI: 10.1016/j.fsi.2022.07.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 07/10/2022] [Accepted: 07/11/2022] [Indexed: 06/15/2023]
Abstract
Neutrophils can capture and kill pathogens by releasing neutrophils extracellular traps (NETs), which play critical roles in anti-microbial infection in mammals; however, the mechanisms involved in NETs formation and its role in anti-bacterial infection in teleost fish remains largely unknown. In this study, to explore the function of NETs in turbot, we established an in vitro bacterial infection model in head kidney derived neutrophils, and found that the haemolysin over-expressed Edwardsiella piscicida (ethA+) could induce a robust phenotype of NETs, compared with that in wild type or ethA mutant (ethA+ -ΔethA) strains. Besides, the NETosis was mediated by ethA+ -induced pyroptosis, and arms the ability of bacterial killing in neutrophils of turbot. Moreover, we found that neutrophils elastase (NE) might involves in this pyroptotic signaling, rather than inflammatory Smcaspase. Taken together, this study reveals the important role of pyroptosis in NETs formation in turbot neutrophils, suggesting that NETs formation is a critical immune response during bacterial infection in teleost fish.
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Affiliation(s)
- Jingjing Zhao
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Weijie Chen
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Yuanxing Zhang
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519000, 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
| | - Zhuang Wang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China.
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20
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Caspase-1-driven neutrophil pyroptosis and its role in host susceptibility to Pseudomonas aeruginosa. PLoS Pathog 2022; 18:e1010305. [PMID: 35849616 PMCID: PMC9345480 DOI: 10.1371/journal.ppat.1010305] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 08/02/2022] [Accepted: 06/01/2022] [Indexed: 11/22/2022] Open
Abstract
Multiple regulated neutrophil cell death programs contribute to host defense against infections. However, despite expressing all necessary inflammasome components, neutrophils are thought to be generally defective in Caspase-1-dependent pyroptosis. By screening different bacterial species, we found that several Pseudomonas aeruginosa (P. aeruginosa) strains trigger Caspase-1-dependent pyroptosis in human and murine neutrophils. Notably, deletion of Exotoxins U or S in P. aeruginosa enhanced neutrophil death to Caspase-1-dependent pyroptosis, suggesting that these exotoxins interfere with this pathway. Mechanistically, P. aeruginosa Flagellin activates the NLRC4 inflammasome, which supports Caspase-1-driven interleukin (IL)-1β secretion and Gasdermin D (GSDMD)-dependent neutrophil pyroptosis. Furthermore, P. aeruginosa-induced GSDMD activation triggers Calcium-dependent and Peptidyl Arginine Deaminase-4-driven histone citrullination and translocation of neutrophil DNA into the cell cytosol without inducing extracellular Neutrophil Extracellular Traps. Finally, we show that neutrophil Caspase-1 contributes to IL-1β production and susceptibility to pyroptosis-inducing P. aeruginosa strains in vivo. Overall, we demonstrate that neutrophils are not universally resistant for Caspase-1-dependent pyroptosis. Neutrophils play an essential role against infections. Although multiple neutrophil death programs contribute to host defense against infections, neutrophils are thought to be defective in Caspase-1-dependent pyroptosis. We screened several microbial species for the capacity to overcome neutrophil resistance to Caspase-1-driven pyroptosis, and show that the bacterium Pseudomonas aeruginosa specifically engages the NLRC4 inflammasome to promote Caspase-1-dependent Gasdermin D activation and subsequent neutrophil pyroptosis. Furthermore, NLRC4 inflammasome-driven pyroptosis leads to histone citrullination, nuclear DNA decondensation and expansion into the host cell cytosol. However, Neutrophil Extracellular Trap (NET) are not formed because DNA is kept in the intracellular space despite plasma membrane permeabilization and extracellular release of soluble and insoluble alarmins. Finally, in vivo P. aeruginosa infections highlight that Caspase-1-driven neutrophil pyroptosis is detrimental to the host upon P. aeruginosa infection. Altogether, our results demonstrate Caspase-1-dependent pyroptosis in neutrophils as a process that contributes to host susceptibility to P. aeruginosa infection.
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21
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Chen Y, Che M, Li C, Li Y, Zhang T, Li X, Sun C. PP1A prevents ROS-induced pyroptosis by inhibiting MAPK/caspase-3 in mouse adipose tissue. FEBS J 2022; 289:3839-3853. [PMID: 35080339 DOI: 10.1111/febs.16373] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 11/25/2021] [Accepted: 01/24/2022] [Indexed: 12/13/2022]
Abstract
Pyroptosis is a type of programmed cell death triggered by a variety of exogenous stimuli, playing important roles in the development of cells. Recent studies have shown that pyroptosis also occurs in human and mouse adipocytes. The serine/threonine protein phosphatase 1 catalytic subunit α (PP1A) is located in the nucleus and functions in the regulation of cell development, glucose metabolism and protein synthesis. PP1A can also target important proteins in the process of apoptosis. However, it is still unclear whether PP1A participates in the regulation of pyroptosis in mouse adipocytes. In the present study, we investigated the function of PP1A in reactive oxygen species-induced pyroptosis and the related mechanism in mouse adipose tissue. Our results demonstrated that PP1A suppressed pyroptosis in adipocytes by inhibiting the reactive oxygen species/mitogen-activated protein kinase/caspase-3 signaling pathway and promoting M2 macrophage polarization. This experiment provides a theoretical basis for understanding the regulatory function and mechanism of PP1A in pyroptosis caused by oxidative stress in adipocytes.
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Affiliation(s)
- Yizhe Chen
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Meng Che
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Chaowei Li
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Yizhou Li
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Tiantian Zhang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Xinjian Li
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
| | - Chao Sun
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
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22
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Lozano-Gil JM, Rodríguez-Ruiz L, Tyrkalska SD, García-Moreno D, Pérez-Oliva AB, Mulero V. Gasdermin E mediates pyroptotic cell death of neutrophils and macrophages in a zebrafish model of chronic skin inflammation. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2022; 132:104404. [PMID: 35341794 DOI: 10.1016/j.dci.2022.104404] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/21/2022] [Accepted: 03/21/2022] [Indexed: 06/14/2023]
Abstract
Chronic diseases and hematopoietic disorders are associated with dysregulation of the inflammasome. Our group has recently reported the relevance of the inflammasome in the differentiation of hematopoietic stem and progenitor cells. However, the impact of the inflammasome of myeloid cells in the regulation of hematopoiesis is largely unknown. In this study, we used the unique advantages of the zebrafish model to demonstrate that genetic inhibition of macrophage inflammasome resulted in increased number of macrophages in larvae with skin inflammation without affecting erythrocyte and neutrophil counts. Similarly, the inhibition of the neutrophil inflammasome by the same strategy resulted in increased number of neutrophils in larvae with skin inflammation but did not affect erythrocytes and macrophages. Consistently, hyperactivation of the inflammasome in neutrophils in this model promoted neutrophil death, which was recovered by pharmacological inhibition of Gasdermin E. We conclude that the myeloid inflammasome autonomously regulates pyroptotic cell death in chronic inflammation through a Gasdermin E-dependent pathway in zebrafish.
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Affiliation(s)
- Juan M Lozano-Gil
- Departmento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia, 30100, Murcia, Spain; Instituto Murciano de Investigación Biosanitaria (IMIB)-Arrixaca, 30120, Murcia, Spain; Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - Lola Rodríguez-Ruiz
- Departmento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia, 30100, Murcia, Spain; Instituto Murciano de Investigación Biosanitaria (IMIB)-Arrixaca, 30120, Murcia, Spain; Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - Sylwia D Tyrkalska
- Departmento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia, 30100, Murcia, Spain; Instituto Murciano de Investigación Biosanitaria (IMIB)-Arrixaca, 30120, Murcia, Spain; Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - Diana García-Moreno
- Departmento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia, 30100, Murcia, Spain; Instituto Murciano de Investigación Biosanitaria (IMIB)-Arrixaca, 30120, Murcia, Spain; Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, 28029, Madrid, Spain
| | - Ana B Pérez-Oliva
- Instituto Murciano de Investigación Biosanitaria (IMIB)-Arrixaca, 30120, Murcia, Spain; Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, 28029, Madrid, Spain.
| | - Victoriano Mulero
- Departmento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia, 30100, Murcia, Spain; Instituto Murciano de Investigación Biosanitaria (IMIB)-Arrixaca, 30120, Murcia, Spain; Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, 28029, Madrid, Spain.
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23
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Pathogenesis of pneumonia and acute lung injury. Clin Sci (Lond) 2022; 136:747-769. [PMID: 35621124 DOI: 10.1042/cs20210879] [Citation(s) in RCA: 84] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 04/29/2022] [Accepted: 05/09/2022] [Indexed: 12/15/2022]
Abstract
Pneumonia and its sequelae, acute lung injury, present unique challenges for pulmonary and critical care healthcare professionals, and these challenges have recently garnered global attention due to the ongoing Sars-CoV-2 pandemic. One limitation to translational investigation of acute lung injury, including its most severe manifestation (acute respiratory distress syndrome, ARDS) has been heterogeneity resulting from the clinical and physiologic diagnosis that represents a wide variety of etiologies. Recent efforts have improved our understanding and approach to heterogeneity by defining sub-phenotypes of ARDS although significant gaps in knowledge remain. Improving our mechanistic understanding of acute lung injury and its most common cause, infectious pneumonia, can advance our approach to precision targeted clinical interventions. Here, we review the pathogenesis of pneumonia and acute lung injury, including how respiratory infections and lung injury disrupt lung homoeostasis, and provide an overview of respiratory microbial pathogenesis, the lung microbiome, and interventions that have been demonstrated to improve outcomes-or not-in human clinical trials.
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24
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Costanzo-Garvey DL, Case AJ, Watson GF, Alsamraae M, Chatterjee A, Oberley-Deegan RE, Dutta S, Abdalla MY, Kielian T, Lindsey ML, Cook LM. Prostate cancer addiction to oxidative stress defines sensitivity to anti-tumor neutrophils. Clin Exp Metastasis 2022; 39:641-659. [PMID: 35604506 PMCID: PMC9338904 DOI: 10.1007/s10585-022-10170-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 04/24/2022] [Indexed: 01/17/2023]
Abstract
Bone metastatic prostate cancer (BM-PCa) remains one of the most difficult cancers to treat due to the complex interactions of cancer and stromal cells. We previously showed that bone marrow neutrophils elicit an anti-tumor immune response against BM-PCa. Further, we demonstrated that BM-PCa induces neutrophil oxidative burst, which has previously been identified to promote primary tumor growth of other cancers, and a goal of this study was to define the importance of neutrophil oxidative burst in BM-PCa. To do this, we first examined the impact of depletion of reactive oxygen species (ROS), via systemic deletion of the main source of ROS in phagocytes, NADPH oxidase (Nox)2, which we found to suppress prostate tumor growth in bone. Further, using pharmacologic ROS inhibitors and Nox2-null neutrophils, we found that ROS depletion specifically suppresses growth of androgen-insensitive prostate cancer cells. Upon closer examination using bulk RNA sequencing analysis, we identified that metastatic prostate cancer induces neutrophil transcriptomic changes that activates pathways associated with response to oxidative stress. In tandem, prostate cancer cells resist neutrophil anti-tumor response via extracellular (i.e., regulation of neutrophils) and intracellular alterations of glutathione synthesis, the most potent cellular antioxidant. These findings demonstrate that BM-PCa thrive under oxidative stress conditions and such that regulation of ROS and glutathione programming could be leveraged for targeting of BM-PCa progression.
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Affiliation(s)
- Diane L Costanzo-Garvey
- Department of Pathology and Microbiology, University of Nebraska Medical Center, 985900 Nebraska Med Center, Omaha, NE, 68198, USA
| | - Adam J Case
- Department of Psychiatry and Behavioral Sciences, Texas A&M College of Medicine, Bryan, TX, USA.,Department of Medical Physiology, Texas A&M College of Medicine, Bryan, TX, USA
| | - Gabrielle F Watson
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center and Omaha VA Medical Center, Omaha, NE, USA
| | - Massar Alsamraae
- Department of Pathology and Microbiology, University of Nebraska Medical Center, 985900 Nebraska Med Center, Omaha, NE, 68198, USA
| | - Arpita Chatterjee
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Rebecca E Oberley-Deegan
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Samikshan Dutta
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Maher Y Abdalla
- Department of Pathology and Microbiology, University of Nebraska Medical Center, 985900 Nebraska Med Center, Omaha, NE, 68198, USA
| | - Tammy Kielian
- Department of Pathology and Microbiology, University of Nebraska Medical Center, 985900 Nebraska Med Center, Omaha, NE, 68198, USA
| | - Merry L Lindsey
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center and Omaha VA Medical Center, Omaha, NE, USA
| | - Leah M Cook
- Department of Pathology and Microbiology, University of Nebraska Medical Center, 985900 Nebraska Med Center, Omaha, NE, 68198, USA.
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25
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Liu J, Fan G, Tao N, Sun T. Role of Pyroptosis in Respiratory Diseases and its Therapeutic Potential. J Inflamm Res 2022; 15:2033-2050. [PMID: 35370413 PMCID: PMC8974246 DOI: 10.2147/jir.s352563] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Accepted: 03/16/2022] [Indexed: 11/23/2022] Open
Abstract
Pyroptosis is an inflammatory type of regulated cell death that is dependent on inflammasome activation and downstream proteases such as caspase-1 or caspase 4/5/11. The main executors are gasdermins, which have an inherent pore-forming function on the membrane and release inflammatory cytokines, such as interleukin (IL)-1β, IL-18 and high mobility group box 1. Emerging evidence demonstrates that pyroptosis is involved in the pathogenesis of various pulmonary diseases. In this review, we mainly discuss the biological mechanisms of pyroptosis, explore the relationship between pyroptosis and respiratory diseases, and discuss emerging therapeutic strategies for respiratory diseases.
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Affiliation(s)
- Jingjing Liu
- Department of Respiratory Medicine and Critical Care, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
- Graduate School of Peking Union Medical College, Beijing, People’s Republic of China
- The MOH Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Beijing, People’s Republic of China
| | - Guoqing Fan
- Department of Respiratory Medicine and Critical Care, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
- Graduate School of Peking Union Medical College, Beijing, People’s Republic of China
- The MOH Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Beijing, People’s Republic of China
| | - Ningning Tao
- Department of Respiratory Medicine and Critical Care, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, People’s Republic of China
| | - Tieying Sun
- Department of Respiratory Medicine and Critical Care, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
- Graduate School of Peking Union Medical College, Beijing, People’s Republic of China
- Correspondence: Tieying Sun, Department of Respiratory Medicine and Critical Care, Beijing Hospital, Dongcheng District, Beijing, 100730, People’s Republic of China, Tel +86 15153169108, Email
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26
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Guo L, Qin G, Cao Y, Yang Y, Dai S, Wang L, Wang E. Regulation of the Immune Microenvironment by an NLRP3 Inhibitor Contributes to Attenuation of Acute Right Ventricular Failure in Rats with Pulmonary Arterial Hypertension. J Inflamm Res 2021; 14:5699-5711. [PMID: 34754216 PMCID: PMC8572093 DOI: 10.2147/jir.s336964] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Accepted: 10/21/2021] [Indexed: 12/04/2022] Open
Abstract
Background Right heart failure is the terminal stage of PAH. When PAH patients suffer from pulmonary infection or puerperal infection heart failure often rapidly develops. Low dose of lipopolysaccharide induces rapid right ventricular failure in rats with pulmonary arterial hypertension. Purpose The objective of this study was to investigate whether the NLRP3 inflammasome mediates disturbance of the ventricular immune microenvironment of PAH rats and promotes right ventricular failure. Methods Intraperitoneal injection of monocrotaline was used to induce PAH in rats. Right ventricular function was measured via echocardiography before and after the rats were treated with lipopolysaccharide and MCC950. The degree of immune microenvironment disturbance in right ventricular tissue was measured with a rat chemokine and cytokine antibody array, Western blot, flow cytometry and quantitative real-time PCR analysis. Results After the rats were injected with LPS, they exhibited right ventricular dysfunction and a significant increase in right ventricular tissue inflammation with elevated M1 macrophage proportion. Administration of MCC950 suppressed inflammation and improved right ventricular function. The number of M1 macrophages was decreased after MCC950 treatment. NLRP3 inflammasome inhibition ameliorated LPS-induced changes in the immune microenvironment in the right heart and right ventricular dysfunction in rats with PAH. Conclusion Selective inhibition of NLRP3 pathway interfered the interaction between hypertrophic cardiomyocytes and macrophages in the initial stage of inflammation and maintained the immune microenvironment balance, eventually contributing to attenuation of LPS-induced acute heart failure in PAH rats.
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Affiliation(s)
- Lizhe Guo
- Department of Anesthesiology, Xiangya Hospital Central South University, Changsha, People's Republic of China
| | - Gang Qin
- Department of Anesthesiology, Xiangya Hospital Central South University, Changsha, People's Republic of China
| | - Yanan Cao
- Department of Anesthesiology, Xiangya Hospital Central South University, Changsha, People's Republic of China
| | - Yue Yang
- Department of Anesthesiology, Xiangya Hospital Central South University, Changsha, People's Republic of China
| | - Sisi Dai
- Department of Anesthesiology, Xiangya Hospital Central South University, Changsha, People's Republic of China
| | - Lu Wang
- Department of Anesthesiology, Xiangya Hospital Central South University, Changsha, People's Republic of China
| | - E Wang
- Department of Anesthesiology, Xiangya Hospital Central South University, Changsha, People's Republic of China.,National Clinical Research Center for Geriatric Disorders (Xiangya Hospital), Changsha, People's Republic of China
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27
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Sollberger G. Approaching Neutrophil Pyroptosis. J Mol Biol 2021; 434:167335. [PMID: 34757055 DOI: 10.1016/j.jmb.2021.167335] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 10/25/2021] [Accepted: 10/26/2021] [Indexed: 01/21/2023]
Abstract
All cells must die at some point, and the dogma is that they do it either silently via apoptosis or via pro-inflammatory, lytic forms of death. Amongst these lytic cell death pathways, pyroptosis is one of the best characterized. Pyroptosis depends on inflammatory caspases which activate members of the gasdermin family of proteins, and it is associated with the release of the pro-inflammatory cytokines interleukin (IL)-1β and IL-18. Pyroptosis is an essential component of innate immunity, it initiates and amplifies inflammation and it removes the replication niche for intracellular pathogens. Most of the literature on pyroptosis focuses on monocytes and macrophages. However, the most abundant phagocytes in humans are neutrophils. This review addresses whether neutrophils undergo pyroptosis and the underlying mechanisms. Furthermore, I discuss how and why neutrophils might be able to resist pyroptosis.
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Affiliation(s)
- Gabriel Sollberger
- University of Dundee, School of Life Sciences, Division of Cell Signalling and Immunology, Dow Street, DD1 5EH Dundee, UK; Max Planck Institute for Infection Biology, Charitéplatz 1, 10117 Berlin, Germany.
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28
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Singhal A, Kumar S. Neutrophil and remnant clearance in immunity and inflammation. Immunology 2021; 165:22-43. [PMID: 34704249 DOI: 10.1111/imm.13423] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 08/18/2021] [Accepted: 10/21/2021] [Indexed: 12/13/2022] Open
Abstract
Neutrophil-centred inflammation and flawed clearance of neutrophils cause and exuberate multiple pathological conditions. These most abundant leukocytes exhibit very high daily turnover in steady-state and stress conditions. Various armours including oxidative burst, NETs and proteases function against pathogens, but also dispose neutrophils to spawn pro-inflammatory responses. Neutrophils undergo death through different pathways upon ageing, infection, executing the intruder's elimination. These include non-lytic apoptosis and other lytic deaths including NETosis, necroptosis and pyroptosis with distinct disintegration of the cellular membrane. This causes release and presence of different intracellular cytotoxic, and tissue-damaging content as cell remnants in the extracellular environment. The apoptotic cells and apoptotic bodies get cleared with non-inflammatory outcomes, while lytic deaths associated remnants including histones and cell-free DNA cause pro-inflammatory responses. Indeed, the enhanced frequencies of neutrophil-associated proteases, cell-free DNA and autoantibodies in diverse pathologies including sepsis, asthma, lupus and rheumatoid arthritis, imply disturbed neutrophil resolution programmes in inflammatory and autoimmune diseases. Thus, the clearance mechanisms of neutrophils and associated remnants are vital for therapeutics. Though studies focused on clearance mechanisms of senescent or apoptotic neutrophils so far generated a good understanding of the same, clearance of neutrophils undergoing distinct lytic deaths, including NETs, are being the subjects of intense investigations. Here, in this review, we are providing the current updates in the clearance mechanisms of apoptotic neutrophils and focusing on not so well-defined recognition, uptake and degradation of neutrophils undergoing lytic death and associated remnants that may provide new therapeutic approaches in inflammation and autoimmunity.
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Affiliation(s)
- Apurwa Singhal
- Pharmacology Division, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India
| | - Sachin Kumar
- Pharmacology Division, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India.,Academy of Scientific and Innovative Research (AcSIR), Postal Staff College Area, Ghaziabad, Uttar Pradesh, India
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29
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Li H, Li Y, Song C, Hu Y, Dai M, Liu B, Pan P. Neutrophil Extracellular Traps Augmented Alveolar Macrophage Pyroptosis via AIM2 Inflammasome Activation in LPS-Induced ALI/ARDS. J Inflamm Res 2021; 14:4839-4858. [PMID: 34588792 PMCID: PMC8473117 DOI: 10.2147/jir.s321513] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 08/23/2021] [Indexed: 12/12/2022] Open
Abstract
Background Uncontrollable inflammation is a critical feature of gram-negative bacterial pneumonia-induced acute respiratory distress syndrome (ARDS). Both neutrophils and alveolar macrophages participate in inflammation, but how their interaction augments inflammation and triggers ARDS is unclear. The authors hypothesize that neutrophil extracellular traps (NETs), which are formed during neutrophil NETosis, partly cause alveolar macrophage pyroptosis and worsen the severity of ARDS. Methods The authors first analysed whether NETs and caspase-1 are involved in clinical cases of ARDS. Then, the authors employed a lipopolysaccharide (LPS)-induced ARDS model to investigate whether targeting NETs or alveolar macrophages is protective. The AIM2 sensor can bind to DNA to promote AIM2 inflammasome activation, so the authors studied whether degradation of NET DNA or silencing of the AIM2 gene could protect alveolar macrophages from pyroptosis in vitro. Results Analysis of aspirate supernatants from ARDS patients showed that NET and caspase-1 levels were correlated with the severity of ARDS and that the levels of NETs and caspase-1 were higher in nonsurvivors than in survivors. In vivo, the NET level and proportion of pyroptotic alveolar macrophages in bronchoalveolar lavage fluid (BALF) were obviously higher in LPS-challenged mice than in control mice 24 h after injury. Administration of DNase I (a NET DNA-degrading agent) and BB-Cl-amidine (a NET formation inhibitor) alleviated alveolar macrophage pyroptosis, and Ac-YVAD-cmk (a pyroptosis inhibitor) attenuated NET levels in BALF and neutrophil infiltration in alveoli. All treatments markedly attenuated the severity of ARDS. Notably, LPS causes NETs to induce alveolar macrophage pyroptosis, and degradation of NET DNA or silencing of the AIM2 gene protected against alveolar macrophage pyroptosis. Conclusion These findings shed light on the proinflammatory role of NETs in mediating the neutrophil-alveolar macrophage interaction, which influences the progression of ARDS.
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Affiliation(s)
- Haitao Li
- First Department of Thoracic Medicine, Hunan Cancer Hospital/The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha City, Hunan Province, People's Republic of China
| | - Yi Li
- Department of Respiratory and Critical Care Medicine, National Key Clinical Specialty, Xiangya Hospital, Central South University, Changsha City, Hunan Province, People's Republic of China
| | - Chao Song
- Department of Respiratory and Critical Care Medicine, National Key Clinical Specialty, Xiangya Hospital, Central South University, Changsha City, Hunan Province, People's Republic of China
| | - Yongbin Hu
- Department of Pathology, Xiangya Hospital, Central South University, Changsha City, Hunan Province, People's Republic of China
| | - Minhui Dai
- Department of Respiratory and Critical Care Medicine, National Key Clinical Specialty, Xiangya Hospital, Central South University, Changsha City, Hunan Province, People's Republic of China
| | - Ben Liu
- Department of Emergency, Xiangya Hospital, Central South University, Changsha City, Hunan Province, People's Republic of China
| | - Pinhua Pan
- Department of Respiratory and Critical Care Medicine, National Key Clinical Specialty, Xiangya Hospital, Central South University, Changsha City, Hunan Province, People's Republic of China
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30
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Li H, Liu X, Shang Z, Qiao J. Clostridium butyricum Helps to Alleviate Inflammation in Weaned Piglets Challenged With Enterotoxigenic Escherichia coli K88. Front Vet Sci 2021; 8:683863. [PMID: 34277756 PMCID: PMC8282889 DOI: 10.3389/fvets.2021.683863] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 06/11/2021] [Indexed: 12/05/2022] Open
Abstract
Background: Whether the probiotic Clostridium butyricum (CB) alleviates enterotoxigenic Escherichia coli (ETEC) K88-induced inflammation by regulating the activation of the toll-like receptor (TLR) signaling pathway is not clear, thus, we carried out this study. A total of 72 piglets (average body weight 7.09 ± 0.2 kg) were randomly divided into three groups of 24 piglets per group. Pigs were either fed a daily diet (NC, negative control), a diet tested every day by 1 × 109 CFU/mL ETEC K88 (PC, positive control), or a basal diet supplemented with 5 × 105 CFU/g CB and challenged with ETEC K88 (PC + CB group). Results: Our results showed that CB pretreatment attenuated the effect of ETEC K88 by decreasing C-reactive protein (CRP), which resulted in tumor necrosis factor alpha (TNF-α) and interleukin-6 (IL-6) production. Histological examination revealed that CB pretreatment alleviated intestinal villi injury caused by ETEC K88 challenge. Furthermore, CB pretreatment promoted mRNA expression of the negative regulators of TLR signaling, including myeloid differentiation factor (MyD88), toll-interacting protein (Tollip), and B cell CLL/lymphoma 3 (Bcl-3), in the intestines of ETEC K88-challenged piglets. ETEC K88-induced activation of nuclear factor kappa B (NF-κB) and nuclear factor of kappa light polypeptide gene enhancer in B cells inhibitor alpha (IκBα) was attenuated by CB pretreatment. Conclusion: These findings indicate that CB helps to maintain and strengthen the shape of intestinal villi and limits detrimental inflammatory responses, partly by inhibiting toll-like receptor 2 (TLR-2), toll-like receptor 4 (TLR-4), and toll-like receptor 5 (TLR-5) expression and inhibiting NF-κB p65, and promoting IκBα activation and synergism among its negative regulators.
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Affiliation(s)
- Haihua Li
- Tianjin Key Laboratory of Agricultural Animal Breeding and Healthy Husbandry, College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin, China
| | - Xuejiao Liu
- Tianjin Key Laboratory of Agricultural Animal Breeding and Healthy Husbandry, College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin, China
| | - Zhiyuan Shang
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin, China
| | - Jiayun Qiao
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin, China
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31
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Li P, Shi J, Zhou L, Wang B, Zhang LJ, Duan L, Hu Q, Zhou X, Yuan Y, Li D, Chen H, Zhao Q, Peng X, Chen W. Pleural Fluid GSDMD Is a Novel Biomarker for the Early Differential Diagnosis of Pleural Effusion. Front Microbiol 2021; 12:620322. [PMID: 34163438 PMCID: PMC8215111 DOI: 10.3389/fmicb.2021.620322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Accepted: 05/10/2021] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE Gasdermin D (GSDMD), controlling pyroptosis in cells, has multiple physiological functions. The diagnostic role of GSDMD in pleural effusion (PE) remains unknown. METHODS Sandwich ELISA kits that we developed were applied to measure the level of GSDMD for 335 patients with a definite cause of PE, including transudative PE, tuberculous pleural effusion (TPE), parapneumonic pleural effusion (PPE), and malignant pleural effusion (MPE). The diagnostic accuracy of Light's criteria vs. the new marker GSDMD was performed. Clinical follow-up of 40 cases of PPE was conducted and divided into efficacy and non-efficacy groups according to the therapeutic outcome. Nucleated cells (NCs) in PE were isolated and further infected with bacteria to verify the cell source of GSDMD. RESULTS The diagnostic accuracy of GSDMD for the diagnosis of PE were 96% (sensitivity) and 94% (specificity). The receiver operating characteristic (ROC) curve indicated that GSDMD can be an efficient biomarker for the differential diagnosis of transudative PE and other groups (all AUC > 0.973). Noteworthily, the highest AUC belonged to tuberculosis diagnosis of 0.990, and the cut-off value was 18.40 ng/mL. Moreover, the same cut-off value of PPE and MPE was 9.35 ng/mL. The combination of GSDMD, adenosine deaminase (ADA), and lactate dehydrogenase (LDH) will further improve the diagnostic efficiency especially between TPE and PPE (AUC = 0.968). The AUC of GSDMD change at day 4, which could predict the therapeutic effect at an early stage, was 0.945 (P < 0.0001). Interestingly, bacterial infection experiments further confirm that the pleural fluid GSDMD was expressed and secreted mainly by the NCs. CONCLUSION GSDMD and its combination are candidates as a potentially novel biomarker not only to separate PEs early and effectively, but also monitor disease progression.
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Affiliation(s)
- Pu Li
- Department of Laboratory Medicine, The Second Hospital of Chongqing Medical University, Chongqing, China
| | - Jing Shi
- Department of Laboratory Medicine, The First Hospital of Chongqing Medical University, Chongqing, China
| | - Lijing Zhou
- Department of Laboratory Medicine, The Second Hospital of Chongqing Medical University, Chongqing, China
| | - Bo Wang
- Department of Laboratory Medicine, The Second Hospital of Chongqing Medical University, Chongqing, China
| | - Li Jun Zhang
- Department of Laboratory Medicine, The Second Hospital of Chongqing Medical University, Chongqing, China
| | - Liang Duan
- Department of Laboratory Medicine, The Second Hospital of Chongqing Medical University, Chongqing, China
| | - Qin Hu
- Department of Laboratory Medicine, The Second Hospital of Chongqing Medical University, Chongqing, China
| | - Xiaolan Zhou
- Department of Medical Record Management, The Second Hospital of Chongqing Medical University, Chongqing, China
| | - Yuan Yuan
- Laboratory Medical College, Chongqing Medical University, Chongqing, China
| | - Dandan Li
- Department of Laboratory Medicine, The Second Hospital of Chongqing Medical University, Chongqing, China
| | - Hong Chen
- Department of Laboratory Medicine, The Second Hospital of Chongqing Medical University, Chongqing, China
| | - Qing Zhao
- Department of Laboratory Medicine, The Second Hospital of Chongqing Medical University, Chongqing, China
| | - Xuemei Peng
- Department of Neurology, Chongqing People’s Hospital, Chongqing, China
| | - Weixian Chen
- Department of Laboratory Medicine, The Second Hospital of Chongqing Medical University, Chongqing, China
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32
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Hasan A, Al-Ozairi E, Al-Baqsumi Z, Ahmad R, Al-Mulla F. Cellular and Humoral Immune Responses in Covid-19 and Immunotherapeutic Approaches. Immunotargets Ther 2021; 10:63-85. [PMID: 33728277 PMCID: PMC7955763 DOI: 10.2147/itt.s280706] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 12/22/2020] [Indexed: 01/08/2023] Open
Abstract
Coronavirus disease 2019 (Covid-19), caused by the novel coronavirus severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), can range in severity from asymptomatic to severe/critical disease. SARS-CoV-2 uses angiotensin-converting enzyme 2 to infect cells leading to a strong inflammatory response, which is most profound in patients who progress to severe Covid-19. Recent studies have begun to unravel some of the differences in the innate and adaptive immune response to SARS-CoV-2 in patients with different degrees of disease severity. These studies have attributed the severe form of Covid-19 to a dysfunctional innate immune response, such as a delayed and/or deficient type I interferon response, coupled with an exaggerated and/or a dysfunctional adaptive immunity. Differences in T-cell (including CD4+ T-cells, CD8+ T-cells, T follicular helper cells, γδ-T-cells, and regulatory T-cells) and B-cell (transitional cells, double-negative 2 cells, antibody-secreting cells) responses have been identified in patients with severe disease compared to mild cases. Moreover, differences in the kinetic/titer of neutralizing antibody responses have been described in severe disease, which may be confounded by antibody-dependent enhancement. Importantly, the presence of preexisting autoantibodies against type I interferon has been described as a major cause of severe/critical disease. Additionally, priorVaccine and multiple vaccine exposure, trained innate immunity, cross-reactive immunity, and serological immune imprinting may all contribute towards disease severity and outcome. Several therapeutic and preventative approaches have been under intense investigations; these include vaccines (three of which have passed Phase 3 clinical trials), therapeutic antibodies, and immunosuppressants.
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Affiliation(s)
- Amal Hasan
- Department of Immunology and Microbiology, Research Division, Dasman Diabetes Institute, Dasman, Kuwait City, Kuwait
| | - Ebaa Al-Ozairi
- Clinical Research Unit, Medical Division, Dasman Diabetes Institute, Dasman, Kuwait City, Kuwait
- Department of Medicine, Faculty of Medicine, Jabriya, Kuwait City, Kuwait
| | - Zahraa Al-Baqsumi
- Department of Immunology and Microbiology, Research Division, Dasman Diabetes Institute, Dasman, Kuwait City, Kuwait
| | - Rasheed Ahmad
- Department of Immunology and Microbiology, Research Division, Dasman Diabetes Institute, Dasman, Kuwait City, Kuwait
| | - Fahd Al-Mulla
- Department of Genetics and Bioinformatics, Functional Genomics, Research Division, Dasman Diabetes Institute, Dasman, Kuwait City, Kuwait
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Pérez-Figueroa E, Álvarez-Carrasco P, Ortega E, Maldonado-Bernal C. Neutrophils: Many Ways to Die. Front Immunol 2021; 12:631821. [PMID: 33746968 PMCID: PMC7969520 DOI: 10.3389/fimmu.2021.631821] [Citation(s) in RCA: 80] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Accepted: 02/08/2021] [Indexed: 12/21/2022] Open
Abstract
Neutrophils or polymorphonuclear leukocytes (PMN) are key participants in the innate immune response for their ability to execute different effector functions. These cells express a vast array of membrane receptors that allow them to recognize and eliminate infectious agents effectively and respond appropriately to microenvironmental stimuli that regulate neutrophil functions, such as activation, migration, generation of reactive oxygen species, formation of neutrophil extracellular traps, and mediator secretion, among others. Currently, it has been realized that activated neutrophils can accomplish their effector functions and simultaneously activate mechanisms of cell death in response to different intracellular or extracellular factors. Although several studies have revealed similarities between the mechanisms of cell death of neutrophils and other cell types, neutrophils have distinctive properties, such as a high production of reactive oxygen species (ROS) and nitrogen species (RNS), that are important for their effector function in infections and pathologies such as cancer, autoimmune diseases, and immunodeficiencies, influencing their cell death mechanisms. The present work offers a synthesis of the conditions and molecules implicated in the regulation and activation of the processes of neutrophil death: apoptosis, autophagy, pyroptosis, necroptosis, NETosis, and necrosis. This information allows to understand the duality encountered by PMNs upon activation. The effector functions are carried out to eliminate invading pathogens, but in several instances, these functions involve activation of signaling cascades that culminate in the death of the neutrophil. This process guarantees the correct elimination of pathogenic agents, damaged or senescent cells, and the timely resolution of the inflammation that is essential for the maintenance of homeostasis in the organism. In addition, they alert the organism when the immunological system is being deregulated, promoting the activation of other cells of the immune system, such as B and T lymphocytes, which produce cytokines that potentiate the microbicide functions.
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Affiliation(s)
- Erandi Pérez-Figueroa
- Unidad de Investigación en Inmunología y Proteómica, Hospital Infantil de México Federico Gómez, Secretaría de Salud, Mexico City, Mexico
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico City, Mexico
| | - Pablo Álvarez-Carrasco
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico City, Mexico
| | - Enrique Ortega
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico City, Mexico
| | - Carmen Maldonado-Bernal
- Unidad de Investigación en Inmunología y Proteómica, Hospital Infantil de México Federico Gómez, Secretaría de Salud, Mexico City, Mexico
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Liu B, He R, Zhang L, Hao B, Jiang W, Wang W, Geng Q. Inflammatory Caspases Drive Pyroptosis in Acute Lung Injury. Front Pharmacol 2021; 12:631256. [PMID: 33613295 PMCID: PMC7892432 DOI: 10.3389/fphar.2021.631256] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 01/06/2021] [Indexed: 12/16/2022] Open
Abstract
Acute lung injury (ALI), a critical respiratory disorder that causes diffuse alveolar injury leads to high mortality rates with no effective treatment. ALI is characterized by varying degrees of ventilation/perfusion mismatch, severe hypoxemia, and poor pulmonary compliance. The diffuse injury to cells is one of most important pathological characteristics of ALI. Pyroptosis is a form of programmed cell death distinguished from apoptosis induced by inflammatory caspases, which can release inflammatory cytokines to clear cells infected by pathogens and promote monocytes to reassemble at the site of injury. And pyroptosis not only promotes inflammation in certain cell types, but also regulates many downstream pathways to perform different functions. There is increasing evidence that pyroptosis and its related inflammatory caspases play an important role in the development of acute lung injury. The main modes of activation of pyroptosis is not consistent among different types of cells in lung tissue. Meanwhile, inhibition of inflammasome, the key to initiating pyroptosis is currently the main way to treat acute lung injury. The review summarizes the relationship among inflammatory caspases, pyroptosis and acute lung injury and provides general directions and strategies to conduct further research.
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Affiliation(s)
- Bohao Liu
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Ruyuan He
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Lin Zhang
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Bo Hao
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Wenyang Jiang
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Wei Wang
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Qing Geng
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
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Stella NA, Brothers KM, Shanks RMQ. Differential susceptibility of airway and ocular surface cell lines to FlhDC-mediated virulence factors PhlA and ShlA from Serratia marcescens. J Med Microbiol 2021; 70:001292. [PMID: 33300860 PMCID: PMC8131021 DOI: 10.1099/jmm.0.001292] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 11/24/2020] [Indexed: 12/26/2022] Open
Abstract
Introduction. Serratia marcescens is a bacterial pathogen that causes ventilator-associated pneumonia and ocular infections. The FlhD and FlhC proteins complex to form a heteromeric transcription factor whose regulon, in S. marcescens, regulates genes for the production of flagellum, phospholipase A and the cytolysin ShlA. The previously identified mutation, scrp-31, resulted in highly elevated expression of the flhDC operon. The scrp-31 mutant was observed to be more cytotoxic to human airway and ocular surface epithelial cells than the wild-type bacteria and the present study sought to identify the mechanism underlying the increased cytotoxicity phenotype.Hypothesis/Gap Statement. Although FlhC and FlhD have been implicated as virulence determinants, the mechanisms by which these proteins regulate bacterial cytotoxicity to different cell types remains unclear.Aim. This study aimed to evaluate the mechanisms of FlhDC-mediated cytotoxicity to human epithelial cells by S. marcescens.Methodology. Wild-type and mutant bacteria and bacterial secretomes were used to challenge airway and ocular surface cell lines as evaluated by resazurin and calcein AM staining. Pathogenesis was further tested using a Galleria mellonella infection model.Results. The increased cytotoxicity of scrp-31 bacteria and secretomes to both cell lines was eliminated by mutation of flhD and shlA. Mutation of the flagellin gene had no impact on cytotoxicity under any tested condition. Elimination of the phospholipase gene, phlA, had no effect on bacteria-induced cytotoxicity to either cell line, but reduced cytotoxicity caused by secretomes to airway epithelial cells. Mutation of flhD and shlA, but not phlA, reduced bacterial killing of G. mellonella larvae.Conclusion. This study indicates that the S. marcescens FlhDC-regulated secreted proteins PhlA and ShlA, but not flagellin, are cytotoxic to airway and ocular surface cells and demonstrates differences in human epithelial cell susceptibility to PhlA.
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Affiliation(s)
- Nicholas A. Stella
- Charles T. Campbell Laboratory of Ophthalmic Microbiology, Department of Ophthalmology, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Kimberly M. Brothers
- Charles T. Campbell Laboratory of Ophthalmic Microbiology, Department of Ophthalmology, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Robert M. Q. Shanks
- Charles T. Campbell Laboratory of Ophthalmic Microbiology, Department of Ophthalmology, University of Pittsburgh, Pittsburgh, PA 15213, USA
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Williams JG, Ly D, Geraghty NJ, McArthur JD, Vyas HKN, Gorman J, Tsatsaronis JA, Sluyter R, Sanderson-Smith ML. Streptococcus pyogenes M1T1 Variants Induce an Inflammatory Neutrophil Phenotype Including Activation of Inflammatory Caspases. Front Cell Infect Microbiol 2021; 10:596023. [PMID: 33585270 PMCID: PMC7876443 DOI: 10.3389/fcimb.2020.596023] [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] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 12/07/2020] [Indexed: 12/15/2022] Open
Abstract
Invasive infections due to group A Streptococcus (GAS) advance rapidly causing tissue degradation and unregulated inflammation. Neutrophils are the primary immune cells that respond to GAS. The neutrophil response to GAS was characterised in response to two M1T1 isolates; 5448 and animal passaged variant 5448AP. Co-incubation of neutrophils with 5448AP resulted in proliferation of GAS and lowered the production of reactive oxygen species when compared with 5448. Infection with both strains invoked neutrophil death, however apoptosis was reduced in response to 5448AP. Both strains induced neutrophil caspase-1 and caspase-4 expression in vitro, with inflammatory caspase activation detected in vitro and in vivo. GAS infections involving strains such as 5448AP that promote an inflammatory neutrophil phenotype may contribute to increased inflammation yet ineffective bacterial eradication, contributing to the severity of invasive GAS infections.
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Affiliation(s)
- Jonathan G. Williams
- Illawarra Health and Medical Research Institute, Wollongong, NSW, Australia
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, Australia
| | - Diane Ly
- Illawarra Health and Medical Research Institute, Wollongong, NSW, Australia
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, Australia
| | - Nicholas J. Geraghty
- Illawarra Health and Medical Research Institute, Wollongong, NSW, Australia
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, Australia
| | - Jason D. McArthur
- Illawarra Health and Medical Research Institute, Wollongong, NSW, Australia
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, Australia
| | - Heema K. N. Vyas
- Illawarra Health and Medical Research Institute, Wollongong, NSW, Australia
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, Australia
| | - Jody Gorman
- Illawarra Health and Medical Research Institute, Wollongong, NSW, Australia
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, Australia
| | - James A. Tsatsaronis
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC, Australia
| | - Ronald Sluyter
- Illawarra Health and Medical Research Institute, Wollongong, NSW, Australia
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, Australia
| | - Martina L. Sanderson-Smith
- Illawarra Health and Medical Research Institute, Wollongong, NSW, Australia
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, Australia
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Dessouki FBA, Kukreja RC, Singla DK. Stem Cell-Derived Exosomes Ameliorate Doxorubicin-Induced Muscle Toxicity through Counteracting Pyroptosis. Pharmaceuticals (Basel) 2020; 13:ph13120450. [PMID: 33316945 PMCID: PMC7764639 DOI: 10.3390/ph13120450] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 11/30/2020] [Accepted: 12/04/2020] [Indexed: 12/21/2022] Open
Abstract
Doxorubicin (Dox)-induced muscle toxicity (DIMT) is a common occurrence in cancer patients; however, the cause of its development and progression is not established. We tested whether inflammation-triggered cell death, “pyroptosis” plays a role in DIMT. We also examined the potential role of exosomes derived from embryonic stem cells (ES-Exos) in attenuating DIMT. C57BL/6J mice (10 ± 2 wks age) underwent the following treatments: Control (saline), Dox, Dox+ES-Exos, and Dox+MEF-Exos (mouse-embryonic fibroblast-derived exosomes, negative control). Our results demonstrated that Dox significantly reduced muscle function in mice, which was associated with a significant increase in NLRP3 inflammasome and initiation marker TLR4 as compared with controls. Pyroptosis activator, ASC, was significantly increased compared to controls with an upregulation of specific markers (caspase-1, IL-1β, and IL-18). Treatment with ES-Exos but not MEF-Exos showed a significant reduction in inflammasome and pyroptosis along with improved muscle function. Additionally, we detected a significant increase in pro-inflammatory cytokines (TNF-α and IL-6) and inflammatory M1 macrophages in Dox-treated animals. Treatment with ES-Exos decreased M1 macrophages and upregulated anti-inflammatory M2 macrophages. Furthermore, ES-Exos showed a significant reduction in muscular atrophy and fibrosis. In conclusion, these results suggest that DIMT is mediated through inflammation and pyroptosis, which is attenuated following treatment with ES-Exos.
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Affiliation(s)
- Fatima Bianca A. Dessouki
- Division of Metabolic and Cardiovascular Sciences, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL 32816, USA;
| | - Rakesh C. Kukreja
- Pauley Heart Center, Virginia Commonwealth University, Richmond, VA 23298, USA;
| | - Dinender K. Singla
- Division of Metabolic and Cardiovascular Sciences, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL 32816, USA;
- Correspondence: ; Tel.: +1-401-823-0953
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Bouillot S, Pont S, Gallet B, Moriscot C, Deruelle V, Attrée I, Huber P. Inflammasome activation by Pseudomonas aeruginosa's ExlA pore-forming toxin is detrimental for the host. Cell Microbiol 2020; 22:e13251. [PMID: 32779854 DOI: 10.1111/cmi.13251] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 07/24/2020] [Accepted: 07/30/2020] [Indexed: 02/06/2023]
Abstract
During acute Pseudomonas aeruginosa infection, the inflammatory response is essential for bacterial clearance. Neutrophil recruitment can be initiated following the assembly of an inflammasome within sentinel macrophages, leading to activation of caspase-1, which in turn triggers macrophage pyroptosis and IL-1β/IL-18 maturation. Inflammasome formation can be induced by a number of bacterial determinants, including Type III secretion systems (T3SSs) or pore-forming toxins, or, alternatively, by lipopolysaccharide (LPS) via caspase-11 activation. Surprisingly, previous studies indicated that a T3SS-induced inflammasome increased pathogenicity in mouse models of P. aeruginosa infection. Here, we investigated the immune reaction of mice infected with a T3SS-negative P. aeruginosa strain (IHMA879472). Virulence of this strain relies on ExlA, a secreted pore-forming toxin. IHMA879472 promoted massive neutrophil infiltration in infected lungs, owing to efficient priming of toll-like receptors, and thus enhanced the expression of inflammatory proteins including pro-IL-1β and TNF-α. However, mature-IL-1β and IL-18 were undetectable in wild-type mice, suggesting that ExlA failed to effectively activate caspase-1. Nevertheless, caspase-1/11 deficiency improved survival following infection with IHMA879472, as previously described for T3SS+ bacteria. We conclude that the detrimental effect associated with the ExlA-induced inflammasome is probably not due to hyperinflammation, rather it stems from another inflammasome-dependent process.
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Affiliation(s)
- Stéphanie Bouillot
- Unité de Biologie Cellulaire et Infection, CEA, INSERM, CNRS, Université Grenoble-Alpes, Grenoble, France
| | - Stéphane Pont
- Unité de Biologie Cellulaire et Infection, CEA, INSERM, CNRS, Université Grenoble-Alpes, Grenoble, France
| | - Benoit Gallet
- Institut de Biologie Structurale, CEA, CNRS, Université Grenoble-Alpes, Grenoble, France
| | - Christine Moriscot
- Institut de Biologie Structurale, CEA, CNRS, Université Grenoble-Alpes, Grenoble, France
| | - Vincent Deruelle
- Unité de Biologie Cellulaire et Infection, CEA, INSERM, CNRS, Université Grenoble-Alpes, Grenoble, France
| | - Ina Attrée
- Unité de Biologie Cellulaire et Infection, CEA, INSERM, CNRS, Université Grenoble-Alpes, Grenoble, France
| | - Philippe Huber
- Unité de Biologie Cellulaire et Infection, CEA, INSERM, CNRS, Université Grenoble-Alpes, Grenoble, France
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Morris G, Bortolasci CC, Puri BK, Olive L, Marx W, O'Neil A, Athan E, Carvalho AF, Maes M, Walder K, Berk M. The pathophysiology of SARS-CoV-2: A suggested model and therapeutic approach. Life Sci 2020; 258:118166. [PMID: 32739471 PMCID: PMC7392886 DOI: 10.1016/j.lfs.2020.118166] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 07/23/2020] [Accepted: 07/25/2020] [Indexed: 01/10/2023]
Abstract
In this paper, a model is proposed of the pathophysiological processes of COVID-19 starting from the infection of human type II alveolar epithelial cells (pneumocytes) by SARS-CoV-2 and culminating in the development of ARDS. The innate immune response to infection of type II alveolar epithelial cells leads both to their death by apoptosis and pyroptosis and to alveolar macrophage activation. Activated macrophages secrete proinflammatory cytokines and chemokines and tend to polarise into the inflammatory M1 phenotype. These changes are associated with activation of vascular endothelial cells and thence the recruitment of highly toxic neutrophils and inflammatory activated platelets into the alveolar space. Activated vascular endothelial cells become a source of proinflammatory cytokines and reactive oxygen species (ROS) and contribute to the development of coagulopathy, systemic sepsis, a cytokine storm and ARDS. Pulmonary activated platelets are also an important source of proinflammatory cytokines and ROS, as well as exacerbating pulmonary neutrophil-mediated inflammatory responses and contributing to systemic sepsis by binding to neutrophils to form platelet-neutrophil complexes (PNCs). PNC formation increases neutrophil recruitment, activation priming and extraversion of these immune cells into inflamed pulmonary tissue, thereby contributing to ARDS. Sequestered PNCs cause the development of a procoagulant and proinflammatory environment. The contribution to ARDS of increased extracellular histone levels, circulating mitochondrial DNA, the chromatin protein HMGB1, decreased neutrophil apoptosis, impaired macrophage efferocytosis, the cytokine storm, the toll-like receptor radical cycle, pyroptosis, necroinflammation, lymphopenia and a high Th17 to regulatory T lymphocyte ratio are detailed.
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Affiliation(s)
- Gerwyn Morris
- Deakin University, IMPACT – the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, Australia
| | - Chiara C. Bortolasci
- Deakin University, IMPACT – the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, Australia,Deakin University, Centre for Molecular and Medical Research, School of Medicine, Geelong, Australia,Corresponding author at: IMPACT – the Institute for Mental and Physical Health and Clinical Translation, Deakin University, 75 Pigdons Road, Waurn Ponds, Victoria 3218, Australia
| | | | - Lisa Olive
- Deakin University, IMPACT – the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, Australia,School of Psychology, Deakin University, Geelong, Australia
| | - Wolfgang Marx
- Deakin University, IMPACT – the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, Australia
| | - Adrienne O'Neil
- Deakin University, IMPACT – the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, Australia,Melbourne School of Population and Global Health, University of Melbourne, Melbourne, Australia
| | - Eugene Athan
- Deakin University, IMPACT – the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, Australia,Barwon Health, Geelong, Australia
| | - Andre F. Carvalho
- Deakin University, IMPACT – the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, Australia,Department of Psychiatry, University of Toronto, Toronto, Canada,Centre for Addiction and Mental Health (CAMH), Toronto, Canada
| | - Michael Maes
- Deakin University, IMPACT – the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, Australia,Department of Psychiatry, King Chulalongkorn University Hospital, Bangkok, Thailand,Department of Psychiatry, Medical University of Plovdiv, Plovdiv, Bulgaria
| | - Ken Walder
- Deakin University, IMPACT – the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, Australia,Deakin University, Centre for Molecular and Medical Research, School of Medicine, Geelong, Australia
| | - Michael Berk
- Deakin University, IMPACT – the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, Australia,Orygen, The National Centre of Excellence in Youth Mental Health, Centre for Youth Mental Health, Florey Institute for Neuroscience and Mental Health and the Department of Psychiatry, The University of Melbourne, Melbourne, Australia
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Pseudomonas donghuensis HYS 7-hydroxytropolone contributes to pathogenicity toward Caenorhabditis elegans and is influenced by pantothenic acid. Biochem Biophys Res Commun 2020; 533:50-56. [PMID: 32921415 DOI: 10.1016/j.bbrc.2020.08.067] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 08/20/2020] [Indexed: 12/25/2022]
Abstract
Pseudomonas donghuensis HYS, a bacterial strain identified from Donghu Lake, has tremendous toxicity toward Caenorhabditis elegans and is characterized by high 7-hydroxytropolone siderophore production. Here, the relationship between pathogenic siderophore production and pantothenic acid was evaluated. The pathogenicity of P. donghuensis HYS was illustrated using C. elegans as a host. Based on slow-killing assay findings, a 7-hydroxytropolone deficiency-causing mutation attenuated P. donghuensis HYS pathogenicity, which was restored by the addition of extracted 7-hydroxytropolone. Moreover, data from real-time qPCR analysis and characteristic absorption assays indicated that pantothenic acid deficiency repressed transcriptional levels of orf9, which further reduced 7-hydroxytropolone production. Furthermore, slow-killing assays indicated that panB and pantothenic acid affected the virulence of P. donghuensis. These results indicate that a 7-hydroxytropolone siderophore-producing strain is virulent toward C. elegans. Our findings demonstrate that pantothenic acid is associated with P. donghuensis siderophore production-related pathogenicity.
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Frye CC, Bery AI, Kreisel D, Kulkarni HS. Sterile inflammation in thoracic transplantation. Cell Mol Life Sci 2020; 78:581-601. [PMID: 32803398 DOI: 10.1007/s00018-020-03615-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 07/20/2020] [Accepted: 08/07/2020] [Indexed: 02/08/2023]
Abstract
The life-saving benefits of organ transplantation can be thwarted by allograft dysfunction due to both infectious and sterile inflammation post-surgery. Sterile inflammation can occur after necrotic cell death due to the release of endogenous ligands [such as damage-associated molecular patterns (DAMPs) and alarmins], which perpetuate inflammation and ongoing cellular injury via various signaling cascades. Ischemia-reperfusion injury (IRI) is a significant contributor to sterile inflammation after organ transplantation and is associated with detrimental short- and long-term outcomes. While the vicious cycle of sterile inflammation and cellular injury is remarkably consistent amongst different organs and even species, we have begun understanding its mechanistic basis only over the last few decades. This understanding has resulted in the developments of novel, yet non-specific therapies for mitigating IRI-induced graft damage, albeit with moderate results. Thus, further understanding of the mechanisms underlying sterile inflammation after transplantation is critical for identifying personalized therapies to prevent or interrupt this vicious cycle and mitigating allograft dysfunction. In this review, we identify common and distinct pathways of post-transplant sterile inflammation across both heart and lung transplantation that can potentially be targeted.
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Affiliation(s)
- C Corbin Frye
- Division of Cardiothoracic Surgery, Department of Surgery, Washington University School of Medicine, St. Louis, MO, 63110, USA.
| | - Amit I Bery
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Washington University School of Medicine, 4523 Clayton Avenue, Campus Box 8052, St. Louis, MO, 63110, USA.
| | - Daniel Kreisel
- Division of Cardiothoracic Surgery, Department of Surgery, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Hrishikesh S Kulkarni
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Washington University School of Medicine, 4523 Clayton Avenue, Campus Box 8052, St. Louis, MO, 63110, USA
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Pseudomonas Aeruginosa Induced Cell Death in Acute Lung Injury and Acute Respiratory Distress Syndrome. Int J Mol Sci 2020; 21:ijms21155356. [PMID: 32731491 PMCID: PMC7432812 DOI: 10.3390/ijms21155356] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 07/21/2020] [Accepted: 07/23/2020] [Indexed: 12/27/2022] Open
Abstract
Pseudomonas aeruginosa is an important opportunistic pathogen responsible for the cause of acute lung injury and acute respiratory distress syndrome. P. aeruginosa isthe leading species isolated from patients with nosocomial infection and is detected in almost all the patients with long term ventilation in critical care units. P. aeruginosa infection is also the leading cause of deleterious chronic lung infections in patients suffering from cystic fibrosis as well as the major reason for morbidity in people with chronic obstructive pulmonary disease. P. aeruginosa infections are linked to diseases with high mortality rates and are challenging for treatment, for which no effective remedies have been developed. Massive lung epithelial cell death is a hallmark of severe acute lung injury and acute respiratory distress syndrome caused by P. aeruginosa infection. Lung epithelial cell death poses serious challenges to air barrier and structural integrity that may lead to edema, cytokine secretion, inflammatory infiltration, and hypoxia. Here we review different types of cell death caused by P. aeruginosa serving as a starting point for the diseases it is responsible for causing. We also review the different mechanisms of cell death and potential therapeutics in countering the serious challenges presented by this deadly bacterium.
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Bauer R, Rauch I. The NAIP/NLRC4 inflammasome in infection and pathology. Mol Aspects Med 2020; 76:100863. [PMID: 32499055 DOI: 10.1016/j.mam.2020.100863] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 04/30/2020] [Indexed: 12/16/2022]
Abstract
In this review we give an overview of the NAIP/NLRC4 activation mechanism as well as the described roles of this inflammasome, with a focus on in vivo infection and pathology. After ligand recognition by NAIP sensor proteins the NAIP/NLRC4 inflammasome forms through oligomerization with the NLRC4 adaptor to activate Caspase-1. The activating ligands are intracellular bacterial flagellin or type-3 secretion system components, delivered by pathogens. In vivo experiments indicate a role in macrophages during lung, spleen and liver infection and systemic sepsis like conditions, as well as in intestinal epithelial cells. Upon NAIP/NLRC4 activation in the intestine, epithelial cell extrusion is triggered in addition to the canonical inflammasome outcomes of cytokine cleavage and pyroptosis. Human patients with auto-activating mutations in NLRC4 present with an autoinflammatory syndrome including enterocolitis. Although one of the better understood inflammasomes in terms of mechanism, tissue specific functions of NAIP/NLRC4 are only beginning to be understood.
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Affiliation(s)
- Renate Bauer
- Department of Molecular Microbiology and Immunology, Oregon Health and Science University, Portland, OR, USA; Department of Biosciences, University of Salzburg, A-5020, Salzburg, Austria
| | - Isabella Rauch
- Department of Molecular Microbiology and Immunology, Oregon Health and Science University, Portland, OR, USA.
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44
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Brostjan C, Oehler R. The role of neutrophil death in chronic inflammation and cancer. Cell Death Discov 2020; 6:26. [PMID: 32351713 PMCID: PMC7176663 DOI: 10.1038/s41420-020-0255-6] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 03/13/2020] [Accepted: 03/23/2020] [Indexed: 02/06/2023] Open
Abstract
The lifespan of a neutrophil is short and limited by programmed cell death, followed by efferocytosis. When activated or exposed to insult, neutrophil death may be delayed to support neutrophil effector functions such as phagocytosis, cytokine release, and pathogen destruction by degranulation. However, neutrophils may also alter the type of cell death and thereby affect inflammatory responses and tissue remodeling. This review briefly introduces the various forms of neutrophil death including apoptosis, necrosis/necroptosis, and the formation of so-called "neutrophil extracellular traps" (NETs), and it summarizes the clearance of dead cells by efferocytosis. Importantly, distinct types of neutrophil death have been found to drive chronic inflammatory disorders and cancer. Thus, the tumor and its microenvironment can delay neutrophil apoptosis to exploit their pro-angiogenic and pro-metastatic properties. Conversely, neutrophils may enter rapid and suicidal cell death by forming extracellular traps, which are expelled DNA strands with neutrophil proteins. Components of these DNA-protein complexes such as histones, high-mobility group protein B1, or neutrophil elastase have been found to promote cancer cell proliferation, adhesion, migration, invasion, and thereby tumor metastasis. In other settings of chronic inflammatory disease such as gout, NETs have been found protective rather than detrimental, as they promoted the local degradation of pro-inflammatory cytokines by neutrophil proteases. Thus, the interaction of neutrophils with the tissue environment extends beyond the stage of the living cell and the type of neutrophil death shapes immune responses and tissue remodeling in health and disease.
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Affiliation(s)
| | - Rudolf Oehler
- Department of Surgery, Medical University of Vienna, Vienna, Austria
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Liang F, Zhang F, Zhang L, Wei W. The advances in pyroptosis initiated by inflammasome in inflammatory and immune diseases. Inflamm Res 2020; 69:159-166. [PMID: 31932850 DOI: 10.1007/s00011-020-01315-3] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 12/18/2019] [Accepted: 01/03/2020] [Indexed: 12/24/2022] Open
Abstract
Pyroptosis is a programmed and inflammatory cell death initiated by inflammasome. During pyroptosis, cytosolic pattern recognition receptors, apoptosis-associated speck-like protein and pro-Caspase-1 form activated inflammasome together. Caspase-1 activated by inflammasome results in generating an N-terminal cleavage product of gasdermin D (GSDMD), which is a major executor of pyroptosis. As a consequence of pyroptosis, a large number of pro-inflammatory cytokines are released including IL-1β and IL-18. Nucleotide-binding oligomerization domain (NOD)-like receptors (NLRs) and absent in melanoma 2 (AIM2)-like receptors (ALRs) belong to cytosolic pattern recognition receptors and assemble inflammasomes by detecting host cell damage signals. Pyroptosis pathways are divided into canonical and non-canonical pathways according to the identification of damage signals by cytoplasmic protein sensors. Pyroptosis not only plays an important role in infection, but also plays a vital role in inflammatory immune diseases. This article reviews the advances research of pyroptosis initiated by inflammasome in inflammatory and immune diseases.
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Affiliation(s)
- Faqin Liang
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-Inflammatory and Immune Medicine (Anhui Medical University), Ministry of Education, Anti-Inflammatory Immune Drugs Collaborative Innovation Center, Hefei, 230032, Anhui, China
| | - Feng Zhang
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-Inflammatory and Immune Medicine (Anhui Medical University), Ministry of Education, Anti-Inflammatory Immune Drugs Collaborative Innovation Center, Hefei, 230032, Anhui, China
| | - Lingling Zhang
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-Inflammatory and Immune Medicine (Anhui Medical University), Ministry of Education, Anti-Inflammatory Immune Drugs Collaborative Innovation Center, Hefei, 230032, Anhui, China.
| | - Wei Wei
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-Inflammatory and Immune Medicine (Anhui Medical University), Ministry of Education, Anti-Inflammatory Immune Drugs Collaborative Innovation Center, Hefei, 230032, Anhui, China.
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Yue L, Yan M, Tremblay ML, Lin TJ, Li H, Yang T, Song X, Xie T, Xie Z. PTP1B negatively regulates nitric oxide-mediated Pseudomonas aeruginosa killing by neutrophils. PLoS One 2019; 14:e0222753. [PMID: 31532798 PMCID: PMC6750887 DOI: 10.1371/journal.pone.0222753] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 09/07/2019] [Indexed: 01/06/2023] Open
Abstract
Neutrophils play a critical role in host defense against Pseudomonas aeruginosa infection. Mechanisms underlying the negative regulation of neutrophil function in bacterial clearance remain incompletely defined. Here, we demonstrate that protein tyrosine phosphatase-1B (PTP1B) is a negative regulator of P. aeruginosa clearance by neutrophils. PTP1B-deficient neutrophils display greatly enhanced bacterial phagocytosis and killing, which are accompanied by increased Toll-like receptor 4 (TLR4) signaling activation and nitric oxide (NO) production following P. aeruginosa infection. Interestingly, PTP1B deficiency mainly upregulates the production of IL-6 and IFN-β, leads to enhanced TLR4-dependent STAT1 activation and iNOS expression by neutrophils following P. aeruginosa infection. Further studies reveal that PTP1B and STAT1 are physically associated. These findings demonstrate a negative regulatory mechanism in neutrophil underlying the elimination of P. aeruginosa infection though a PTP1B-STAT1 interaction.
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Affiliation(s)
- Lei Yue
- The Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, Yunnan, China
| | - Min Yan
- Department of Microbiology and Immunology, Kunming Medical University, Kunming, Yunnan, China
| | - Michel L. Tremblay
- Rosalind and Morris Goodman Cancer Research Centre, Department of Biochemistry, McGill University, Montréal, Quebec, Canada
| | - Tong-Jun Lin
- Department of Microbiology and Immunology, Dalhousie University, Halifax, Nova Scotia, Canada
- Department of Pediatrics, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Hua Li
- The Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, Yunnan, China
| | - Ting Yang
- The Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, Yunnan, China
| | - Xia Song
- The Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, Yunnan, China
| | - Tianhong Xie
- The Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, Yunnan, China
| | - Zhongping Xie
- The Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, Yunnan, China
- * E-mail:
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Liu L, Sun B. Neutrophil pyroptosis: new perspectives on sepsis. Cell Mol Life Sci 2019; 76:2031-2042. [PMID: 30877336 PMCID: PMC11105444 DOI: 10.1007/s00018-019-03060-1] [Citation(s) in RCA: 118] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 03/06/2019] [Accepted: 03/07/2019] [Indexed: 01/01/2023]
Abstract
Pyroptosis is a caspase-1 or caspase-4/5/11-dependent programmed cell death associated with inflammation, which is initiated by inflammasomes or cytosolic LPS in innate immunity. Sepsis is a life-threatening organ dysfunction caused by an imbalance in the body's response to infection. It is a complex interaction between the pathogen and the host's immune system. Neutrophils play the role of a double-edged sword in sepsis, and a number of studies have previously shown that regulation of neutrophils is the most crucial part of sepsis treatment. Pyroptosis is one of the important forms for neutrophils to function, which is increasingly understood as a host active immune response. There is ample evidence that neutrophil pyroptosis may play an important role in sepsis. In recent years, a breakthrough in pyroptosis research has revealed the main mechanism of pyroptosis. However, the potential value of neutrophil pyroptosis in the treatment of sepsis did not draw enough attention. A literature review was performed on the main mechanism of pyroptosis in sepsis and the potential value of neutrophils pyroptosis in sepsis, which may be suitable targets for sepsis treatment in future.
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Affiliation(s)
- Lu Liu
- Department of Burns and Plastic Surgery, Affiliated Hospital, Jiangsu University, 438 Jiefang Rd., Zhenjiang, 212001, Jiangsu, China
| | - Bingwei Sun
- Department of Burns and Plastic Surgery, Affiliated Hospital, Jiangsu University, 438 Jiefang Rd., Zhenjiang, 212001, Jiangsu, China.
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Zhao MW, Yang P, Zhao LL. Chlorpyrifos activates cell pyroptosis and increases susceptibility on oxidative stress-induced toxicity by miR-181/SIRT1/PGC-1α/Nrf2 signaling pathway in human neuroblastoma SH-SY5Y cells: Implication for association between chlorpyrifos and Parkinson's disease. ENVIRONMENTAL TOXICOLOGY 2019; 34:699-707. [PMID: 30835941 DOI: 10.1002/tox.22736] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 01/28/2019] [Accepted: 02/07/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND The insecticide exposure has been linked to Parkinson's disease (PD). In the present study, we used a most widely used cell line in study of PD, the SH-SY5Y cells, to investigate mechanisms of chlorpyrifos (CPF) induced cell toxicity and the possible roles of cell pyroptosis and oxidative stress in SH-SY5Y cells, as well as role of miR-181/SIRT1/PGC-1α/Nrf2 signaling pathway in this process. METHODS SH-SY5Y cells were treated with different concentrations of CPF. Cell viability was measured using CCK-8 assay. Cell pyroptosis was determined by immunofluorescence of caspase-1 and TUNEL assay. The miR-181 (has-miR-181-5p) level was determined by qRT-PCR. Expression of SIRT1, PGC-1α, Nrf2, and pyroptosis related proteins NLRP3, caspase-1, IL-1β, and IL-18 was determined by both qRT-PCR and Western blotting. RESULTS Cell viability was found to be decreased with the increased CPF concentrations. The pyroptosis related proteins, ROS levels, as well as level of caspase-1 and the TUNEL positive cells were all significantly up-regulated by CPF. Meanwhile, expression of miR-181 and pyroptosis proteins was also enhanced, while the SIRT1/PGC-1α/Nrf2 signaling was inhibited by CPF. Knockdown of Nrf2 significantly up-regulated the expression of pyroptosis related proteins, ROS level, caspase-1, and the TUNEL positive cells, while over-expression of Nrf2 resulted in opposite results. The expression of PGC-1α and Nrf2 was significantly down-regulated when SIRT1 was inhibited, while over-expressed SIRT1 led to increased PGC-1α and Nrf2 levels. Besides, miR-181 promoted the CPF induced activation of pyroptosis and oxidative stress, as well as down-regulated SIRT1/PGC-1α/Nrf2 signaling, while inhibition of miR-181 led to opposite results. CONCLUSIONS Chlorpyrifos could inhibit cell proliferation, activate cell pyroptosis and increase susceptibility on oxidative stress-induced toxicity by elevating miR-181 through down-regulation of the SIRT1/PGC-1α/Nrf2 pathway in human neuroblastoma SH-SY5Y cells. This study might give deeper insights for mechanisms of CPF induced toxicity and might give some novel research targets for PD treatment.
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Affiliation(s)
- Meng-Wen Zhao
- Department of Pediatrics, The Third Xiangya Hospital of Central South University, Changsha, People's Republic of China
| | - Pu Yang
- Department of Neurology, The Third Xiangya Hospital of Central South University, Changsha, People's Republic of China
| | - Ling-Ling Zhao
- Department of Pediatrics, The Third Xiangya Hospital of Central South University, Changsha, People's Republic of China
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Cleaved Cochlin Sequesters Pseudomonas aeruginosa and Activates Innate Immunity in the Inner Ear. Cell Host Microbe 2019; 25:513-525.e6. [DOI: 10.1016/j.chom.2019.02.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 12/14/2018] [Accepted: 02/05/2019] [Indexed: 02/06/2023]
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50
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Jia C, Chen H, Zhang J, Zhou K, Zhuge Y, Niu C, Qiu J, Rong X, Shi Z, Xiao J, Shi Y, Chu M. Role of pyroptosis in cardiovascular diseases. Int Immunopharmacol 2018; 67:311-318. [PMID: 30572256 DOI: 10.1016/j.intimp.2018.12.028] [Citation(s) in RCA: 156] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 12/02/2018] [Accepted: 12/11/2018] [Indexed: 01/01/2023]
Abstract
Pyroptosis is a form of programmed necrosis, and is morphologically and mechanistically unique form of programmed cell death compared to others, such as apoptosis and autophagic cell death. More specifically, pyroptosis features gasdermin family-mediated membrane pore formation and subsequent cell lysis, as well as release of pro-inflammatory intracellular contents including IL-1β, IL-18 and HMGB1. Mechanistically, pyroptosis is driven by two main signaling pathways - one mediated by caspase-1 and the other by caspase-4/5/11. Recent studies show that pyroptosis is implicated in several cardiovascular diseases. In this review, we summarize recent scientific discoveries of pyroptosis's involvement in atherosclerosis, myocardial infarction, diabetic cardiomyopathy, reperfusion injury and myocarditis. We also organized new and emerging evidence suggesting that pyroptosis signaling pathways may be potential therapeutic targets in cardiovascular diseases.
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Affiliation(s)
- Chang Jia
- Pediatric Research Institute, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Huanwen Chen
- University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Jian Zhang
- Children's Heart Center, Institute of Cardiovascular Development and Translational Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Kailiang Zhou
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Yingzhi Zhuge
- Children's Heart Center, Institute of Cardiovascular Development and Translational Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Chao Niu
- Pediatric Research Institute, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Jianxin Qiu
- Children's Heart Center, Institute of Cardiovascular Development and Translational Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Xing Rong
- Children's Heart Center, Institute of Cardiovascular Development and Translational Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Zhewei Shi
- Department of Cardiology, Zhuji People's Hospital of Zhejiang Province, Shaoxing 311800, China
| | - Jian Xiao
- Pharmacology, School of Pharmacy, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Yong Shi
- Comprehensive Breast Health Center, Department of Thyroid and Breast Surgery, Lishui People's Hospital, The Six Affiliated Hospital of Wenzhou Medical University, Lishui, Zhejiang 323000, China.
| | - Maoping Chu
- Pediatric Research Institute, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China; Children's Heart Center, Institute of Cardiovascular Development and Translational Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.
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