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Du B, Deng Z, Chen K, Yang Z, Wei J, Zhou L, Meng J, Cheng Y, Tian X, Tuo QZ, Lei P. Iron promotes both ferroptosis and necroptosis in the early stage of reperfusion in ischemic stroke. Genes Dis 2024; 11:101262. [PMID: 39286656 PMCID: PMC11402992 DOI: 10.1016/j.gendis.2024.101262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 01/30/2024] [Accepted: 02/21/2024] [Indexed: 09/19/2024] Open
Abstract
Programmed cell death contributes to neurological damage in ischemic stroke, especially during the reperfusion stage. Several cell death pathways have been tested preclinically and clinically, including ferroptosis, necroptosis, and apoptosis. However, the sequence and complex interplay between cell death pathways during ischemia/reperfusion remains under investigation. Here, we unbiasedly investigated cell death pathways during ischemia/reperfusion by utilizing RNA sequencing analysis and immunoblot assays and revealed that ferroptosis and necroptosis occurred early post-reperfusion, followed by apoptosis. Ferroptosis inhibitor Liproxstatin-1 effectively inhibited necroptosis during reperfusion, while the necroptosis inhibitor Necrostatin-1 suppressed protein expression consistent with ferroptosis activation. Protein-protein interaction analysis and iron chelation therapy by deferoxamine mesylate indicate that iron is capable of promoting both ferroptosis and necroptosis in middle cerebral artery occlusion/repression modeled mice. Treatment of cells with iron led to a disruption in redox balance with activated necroptosis and increased susceptibility to ferroptosis. Collectively, these data uncovered a complex interplay between ferroptosis and necroptosis during ischemic stroke and indicated that multiple programmed cell death pathways may be targeted co-currently.
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Affiliation(s)
- Bin Du
- Department of Neurology and State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Zijie Deng
- Department of Neurology and State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Kang Chen
- Department of Neurology and State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Zhangzhong Yang
- Department of Neurology and State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Junfen Wei
- Department of Neurology and State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Liuyao Zhou
- Department of Neurology and State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Jie Meng
- Department of Neurology and State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Ying Cheng
- Department of Neurology and State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Xin Tian
- Department of Neurology, First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, Chongqing 400016, China
| | - Qing-Zhang Tuo
- Department of Neurology and State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Peng Lei
- Department of Neurology and State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
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Yang J, Geng Y, Zhao B, Liu T, Luo JL, Gao XJ. Green tea polyphenols alleviate TBBPA-induced gastric inflammation and apoptosis by modulating the ROS-PERK/IRE-1/ATF6 pathway in mouse models. Food Funct 2024; 15:10179-10189. [PMID: 39301672 DOI: 10.1039/d4fo03012e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2024]
Abstract
Green tea polyphenols (GTP), an important phytochemical in the daily human diet, bind to various cellular receptors and exert anti-inflammatory and antioxidant benefits. The environmental contaminant tetrabromobisphenol A (TBBPA) enters the digestive system through multiple pathways, resulting in oxidative stress (OS), gastroenteritis, and mucosal injury. The aim of this study was to explore the molecular mechanisms of TBBPA-induced gastritis in mice treated with GTP in vivo and in an in vitro model. The results showed that exposure to TBBPA increased reactive oxygen species (ROS) levels, activated oxidative stress (OS) induced endoplasmic reticulum stress (ERS), and the expression of endoplasmic reticulum stress-related factors (e.g., GRP78, PERK, IRE-1, ATF-6, etc.) increased. The inflammatory pathway NF-κB was activated, and the pro-inflammatory factors TNF-α, IL-1β, and IL-6 increased, while triggering a cascade reaction mediated by caspase-3. However, the addition of GTP could inhibit OS, restore the balance of endoplasmic reticulum homeostasis, and improve the inflammatory infiltration and apoptosis of gastric mucosal epithelial cells. Therefore, GTP alleviated ERS, reduced inflammation and apoptosis, and restored the gastric mucosal barrier by alleviating TBBPA-induced OS in mouse gastric tissues and GES-1 cells. This provides basic information for exploring the antioxidant mechanism of GTP and further investigating the toxic effects of TBBPA on mouse gastric mucosa.
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Affiliation(s)
- Jie Yang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150000, China.
| | - Yuan Geng
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150000, China.
| | - Bing Zhao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150000, China.
| | - Tianjing Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150000, China.
| | - Ji-Long Luo
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150000, China.
| | - Xue-Jiao Gao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150000, China.
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3
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Sarkar R, Choudhury SM, Kanneganti TD. Classical apoptotic stimulus, staurosporine, induces lytic inflammatory cell death, PANoptosis. J Biol Chem 2024; 300:107676. [PMID: 39151726 PMCID: PMC11418131 DOI: 10.1016/j.jbc.2024.107676] [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: 03/09/2024] [Revised: 07/27/2024] [Accepted: 08/03/2024] [Indexed: 08/19/2024] Open
Abstract
Innate immunity is the body's first line of defense against disease, and regulated cell death is a central component of this response that balances pathogen clearance and inflammation. Cell death pathways are generally categorized as non-lytic and lytic. While non-lytic apoptosis has been extensively studied in health and disease, lytic cell death pathways are also increasingly implicated in infectious and inflammatory diseases and cancers. Staurosporine (STS) is a well-known inducer of non-lytic apoptosis. However, in this study, we observed that STS also induces lytic cell death at later timepoints. Using biochemical assessments with genetic knockouts, pharmacological inhibitors, and gene silencing, we identified that STS triggered PANoptosis via the caspase-8/RIPK3 axis, which was mediated by RIPK1. PANoptosis is a lytic, innate immune cell death pathway initiated by innate immune sensors and driven by caspases and RIPKs through PANoptosome complexes. Deletion of caspase-8 and RIPK3, core components of the PANoptosome complex, protected against STS-induced lytic cell death. Overall, our study identifies STS as a time-dependent inducer of lytic cell death, PANoptosis. These findings emphasize the importance of understanding trigger- and time-specific activation of distinct cell death pathways to advance our understanding of the molecular mechanisms of innate immunity and cell death for clinical translation.
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Affiliation(s)
- Roman Sarkar
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Sk Mohiuddin Choudhury
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
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4
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Seyrek K, Ivanisenko NV, König C, Lavrik IN. Modulation of extrinsic apoptotic pathway by intracellular glycosylation. Trends Cell Biol 2024; 34:728-741. [PMID: 38336591 DOI: 10.1016/j.tcb.2024.01.003] [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: 09/20/2023] [Revised: 12/20/2023] [Accepted: 01/12/2024] [Indexed: 02/12/2024]
Abstract
The importance of post-translational modifications (PTMs), particularly O-GlcNAcylation, of cytoplasmic proteins in apoptosis has been neglected for quite a while. Modification of cytoplasmic proteins by a single N-acetylglucosamine sugar is a dynamic and reversible PTM exhibiting properties more like phosphorylation than classical O- and N-linked glycosylation. Due to the sparse information existing, we have only limited understanding of how GlcNAcylation affects cell death. Deciphering the role of GlcNAcylation in cell fate may provide further understanding of cell fate decisions. This review focus on the modulation of extrinsic apoptotic pathway via GlcNAcylation carried out by O-GlcNAc transferase (OGT) or by other bacterial effector proteins.
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Affiliation(s)
- Kamil Seyrek
- Translational Inflammation Research, Medical Faculty, Center of Dynamic Systems (CDS), Otto von Guericke University Magdeburg, 39106 Magdeburg, Germany
| | - Nikita V Ivanisenko
- Translational Inflammation Research, Medical Faculty, Center of Dynamic Systems (CDS), Otto von Guericke University Magdeburg, 39106 Magdeburg, Germany
| | - Corinna König
- Translational Inflammation Research, Medical Faculty, Center of Dynamic Systems (CDS), Otto von Guericke University Magdeburg, 39106 Magdeburg, Germany
| | - Inna N Lavrik
- Translational Inflammation Research, Medical Faculty, Center of Dynamic Systems (CDS), Otto von Guericke University Magdeburg, 39106 Magdeburg, Germany.
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5
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Veli Ö, Kaya Ö, Varanda AB, Hildebrandt X, Xiao P, Estornes Y, Poggenberg M, Wang Y, Pasparakis M, Bertrand MJM, Walczak H, Annibaldi A, Cardozo AK, Peltzer N. RIPK1 is dispensable for cell death regulation in β-cells during hyperglycemia. Mol Metab 2024; 87:101988. [PMID: 39004142 PMCID: PMC11295703 DOI: 10.1016/j.molmet.2024.101988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 07/05/2024] [Accepted: 07/06/2024] [Indexed: 07/16/2024] Open
Abstract
OBJECTIVE Receptor-interacting protein kinase 1 (RIPK1) orchestrates the decision between cell survival and cell death in response to tumor necrosis factor (TNF) and other cytokines. Whereas the scaffolding function of RIPK1 is crucial to prevent TNF-induced apoptosis and necroptosis, its kinase activity is required for necroptosis and partially for apoptosis. Although TNF is a proinflammatory cytokine associated with β-cell loss in diabetes, the mechanism by which TNF induces β-cell demise remains unclear. METHODS Here, we dissected the contribution of RIPK1 scaffold versus kinase functions to β-cell death regulation using mice lacking RIPK1 specifically in β-cells (Ripk1β-KO mice) or expressing a kinase-dead version of RIPK1 (Ripk1D138N mice), respectively. These mice were challenged with streptozotocin, a model of autoimmune diabetes. Moreover, Ripk1β-KO mice were further challenged with a high-fat diet to induce hyperglycemia. For mechanistic studies, pancreatic islets were subjected to various killing and sensitising agents. RESULTS Inhibition of RIPK1 kinase activity (Ripk1D138N mice) did not affect the onset and progression of hyperglycemia in a type 1 diabetes model. Moreover, the absence of RIPK1 expression in β-cells did not affect normoglycemia under basal conditions or hyperglycemia under diabetic challenges. Ex vivo, primary pancreatic islets are not sensitised to TNF-induced apoptosis and necroptosis in the absence of RIPK1. Intriguingly, we found that pancreatic islets display high levels of the antiapoptotic cellular FLICE-inhibitory protein (cFLIP) and low levels of apoptosis (Caspase-8) and necroptosis (RIPK3) components. Cycloheximide treatment, which led to a reduction in cFLIP levels, rendered primary islets sensitive to TNF-induced cell death which was fully blocked by caspase inhibition. CONCLUSIONS Unlike in many other cell types (e.g., epithelial, and immune), RIPK1 is not required for cell death regulation in β-cells under physiological conditions or diabetic challenges. Moreover, in vivo and in vitro evidence suggest that pancreatic β-cells do not undergo necroptosis but mainly caspase-dependent death in response to TNF. Last, our results show that β-cells have a distinct mode of regulation of TNF-cytotoxicity that is independent of RIPK1 and that may be highly dependent on cFLIP.
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Affiliation(s)
- Önay Veli
- Department of Translational Genomics, Faculty of Medicine, University of Cologne, Cologne, Germany; Centre for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Cologne, Germany
| | - Öykü Kaya
- Department of Translational Genomics, Faculty of Medicine, University of Cologne, Cologne, Germany; Centre for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Cologne, Germany
| | - Ana Beatriz Varanda
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Cologne, Germany; Institute of Biochemistry I, Medical Faculty, University of Cologne, 50931 Cologne, Germany
| | - Ximena Hildebrandt
- Department of Translational Genomics, Faculty of Medicine, University of Cologne, Cologne, Germany; Centre for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Cologne, Germany
| | - Peng Xiao
- Inflammation and Cell Death Signalling group, Signal Transduction and Metabolism Laboratory, Université libre de Bruxelles, Brussels, Belgium
| | - Yann Estornes
- VIB Center for Inflammation Research, 9052 Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
| | - Matea Poggenberg
- Centre for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
| | - Yuan Wang
- Department of Translational Genomics, Faculty of Medicine, University of Cologne, Cologne, Germany; Centre for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Cologne, Germany
| | - Manolis Pasparakis
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Cologne, Germany; Institute for Genetics, University of Cologne, Cologne, Germany
| | - Mathieu J M Bertrand
- VIB Center for Inflammation Research, 9052 Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
| | - Henning Walczak
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Cologne, Germany; Institute of Biochemistry I, Medical Faculty, University of Cologne, 50931 Cologne, Germany
| | - Alessandro Annibaldi
- Centre for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
| | - Alessandra K Cardozo
- Inflammation and Cell Death Signalling group, Signal Transduction and Metabolism Laboratory, Université libre de Bruxelles, Brussels, Belgium
| | - Nieves Peltzer
- Department of Translational Genomics, Faculty of Medicine, University of Cologne, Cologne, Germany; Centre for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Cologne, Germany.
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6
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Rastogi S, Ganesh A, Briken V. Mycobacterium tuberculosis Utilizes Serine/Threonine Kinase PknF to Evade NLRP3 Inflammasome-driven Caspase-1 and RIPK3/Caspase-8 Activation in Murine Dendritic Cells. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2024; 213:690-699. [PMID: 39018500 DOI: 10.4049/jimmunol.2300753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 06/28/2024] [Indexed: 07/19/2024]
Abstract
Dendritic cells (DCs) are crucial for initiating the acquired immune response to infectious diseases such as tuberculosis. Mycobacterium tuberculosis has evolved strategies to inhibit activation of the NLRP3 inflammasome in macrophages via its serine/threonine protein kinase, protein kinase F (PknF). It is not known whether this pathway is conserved in DCs. In this study, we show that the pknF deletion mutant of M. tuberculosis (MtbΔpknF) compared with wild-type M. tuberculosis-infected cells induces increased production of IL-1β and increased pyroptosis in murine bone marrow-derived DCs (BMDCs). As shown for murine macrophages, the enhanced production of IL-1β postinfection of BMDCs with MtbΔpknF is dependent on NLRP3, ASC, and caspase-1/11. In contrast to macrophages, we show that MtbΔpknF mediates RIPK3/caspase-8-dependent IL-1β production in BMDCs. Consistently, infection with MtbΔpknF results in increased activation of caspase-1 and caspase-8 in BMDCs. When compared with M. tuberculosis-infected cells, the IL-6 production by MtbΔpknF-infected cells was unchanged, indicating that the mutant does not affect the priming phase of inflammasome activation. In contrast, the activation phase was impacted because the MtbΔpknF-induced inflammasome activation in BMDCs depended on potassium efflux, chloride efflux, reactive oxygen species generation, and calcium influx. In conclusion, PknF is important for M. tuberculosis to evade NLRP3 inflammasome-mediated activation of caspase-1 and RIPK3/caspase-8 pathways in BMDCs.
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Affiliation(s)
- Shivangi Rastogi
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD
| | - Akshaya Ganesh
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD
| | - Volker Briken
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD
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7
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Gao X, Ma C, Liang S, Chen M, He Y, Lei W. PANoptosis: Novel insight into regulated cell death and its potential role in cardiovascular diseases (Review). Int J Mol Med 2024; 54:74. [PMID: 38963054 PMCID: PMC11254103 DOI: 10.3892/ijmm.2024.5398] [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: 01/25/2024] [Accepted: 05/08/2024] [Indexed: 07/05/2024] Open
Abstract
PANoptosis, a complex form of proinflammatory programmed cell death, including apoptosis, pyroptosis and necroptosis, has been an emerging concept in recent years that has been widely reported in cancer, infectious diseases and neurological disorders. Cardiovascular diseases (CVDs) are an important global health problem, posing a serious threat to individuals' lives. An increasing body of research shows that inflammation has a pivotal role in CVDs, which provides an important theoretical basis for PANoptosis to promote the progression of CVDs. To date, only sporadic studies on PANoptosis in CVDs have been reported and its role in the field of CVDs has not been fully explored. Elucidating the various modes of cardiomyocyte death, the specific molecular mechanisms and the links among the various modes of death under various stressful stimuli is of notable clinical significance for a deeper understanding of the pathophysiology of CVDs. The present review summarizes the molecular mechanisms of apoptosis, pyroptosis, necroptosis and PANoptosis and their prospects in the field of CVDs.
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Affiliation(s)
- Xinyu Gao
- Guangdong Provincial Engineering Technology Research Center for Molecular Diagnosis and Innovative Drugs Translation of Cardiopulmonary Vascular Diseases, University Joint Laboratory of Guangdong Province and Macao Region on Molecular Targets and Intervention of Cardiovascular Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
- Laboratory of Cardiovascular Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
| | - Cuixue Ma
- Guangdong Provincial Engineering Technology Research Center for Molecular Diagnosis and Innovative Drugs Translation of Cardiopulmonary Vascular Diseases, University Joint Laboratory of Guangdong Province and Macao Region on Molecular Targets and Intervention of Cardiovascular Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
- Laboratory of Cardiovascular Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
| | - Shan Liang
- Guangdong Provincial Engineering Technology Research Center for Molecular Diagnosis and Innovative Drugs Translation of Cardiopulmonary Vascular Diseases, University Joint Laboratory of Guangdong Province and Macao Region on Molecular Targets and Intervention of Cardiovascular Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
- Laboratory of Cardiovascular Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
| | - Meihong Chen
- Guangdong Provincial Engineering Technology Research Center for Molecular Diagnosis and Innovative Drugs Translation of Cardiopulmonary Vascular Diseases, University Joint Laboratory of Guangdong Province and Macao Region on Molecular Targets and Intervention of Cardiovascular Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
- Laboratory of Cardiovascular Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
| | - Yuan He
- Guangdong Provincial Engineering Technology Research Center for Molecular Diagnosis and Innovative Drugs Translation of Cardiopulmonary Vascular Diseases, University Joint Laboratory of Guangdong Province and Macao Region on Molecular Targets and Intervention of Cardiovascular Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
- Laboratory of Cardiovascular Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
| | - Wei Lei
- Guangdong Provincial Engineering Technology Research Center for Molecular Diagnosis and Innovative Drugs Translation of Cardiopulmonary Vascular Diseases, University Joint Laboratory of Guangdong Province and Macao Region on Molecular Targets and Intervention of Cardiovascular Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
- Laboratory of Cardiovascular Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
- Department of Precision Laboratory, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
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8
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Glover HL, Schreiner A, Dewson G, Tait SWG. Mitochondria and cell death. Nat Cell Biol 2024; 26:1434-1446. [PMID: 38902422 DOI: 10.1038/s41556-024-01429-4] [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: 02/09/2024] [Accepted: 04/26/2024] [Indexed: 06/22/2024]
Abstract
Mitochondria are cellular factories for energy production, calcium homeostasis and iron metabolism, but they also have an unequivocal and central role in intrinsic apoptosis through the release of cytochrome c. While the subsequent activation of proteolytic caspases ensures that cell death proceeds in the absence of collateral inflammation, other phlogistic cell death pathways have been implicated in using, or engaging, mitochondria. Here we discuss the emerging complexities of intrinsic apoptosis controlled by the BCL-2 family of proteins. We highlight the emerging theory that non-lethal mitochondrial apoptotic signalling has diverse biological roles that impact cancer, innate immunity and ageing. Finally, we delineate the role of mitochondria in other forms of cell death, such as pyroptosis, ferroptosis and necroptosis, and discuss mitochondria as central hubs for the intersection and coordination of cell death signalling pathways, underscoring their potential for therapeutic manipulation.
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Affiliation(s)
- Hannah L Glover
- Cancer Research UK Scotland Institute, Glasgow, UK
- School of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - Annabell Schreiner
- Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
- Department of Medical Biology, University of Melbourne, Melbourne, Victoria, Australia
| | - Grant Dewson
- Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia.
- Department of Medical Biology, University of Melbourne, Melbourne, Victoria, Australia.
| | - Stephen W G Tait
- Cancer Research UK Scotland Institute, Glasgow, UK.
- School of Cancer Sciences, University of Glasgow, Glasgow, UK.
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Wang LY, Liu XJ, Li QQ, Zhu Y, Ren HL, Song JN, Zeng J, Mei J, Tian HX, Rong DC, Zhang SH. The romantic history of signaling pathway discovery in cell death: an updated review. Mol Cell Biochem 2024; 479:2255-2272. [PMID: 37851176 DOI: 10.1007/s11010-023-04873-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 10/05/2023] [Indexed: 10/19/2023]
Abstract
Cell death is a fundamental physiological process in all living organisms. Processes such as embryonic development, organ formation, tissue growth, organismal immunity, and drug response are accompanied by cell death. In recent years with the development of electron microscopy as well as biological techniques, especially the discovery of novel death modes such as ferroptosis, cuprotosis, alkaliptosis, oxeiptosis, and disulfidptosis, researchers have been promoted to have a deeper understanding of cell death modes. In this systematic review, we examined the current understanding of modes of cell death, including the recently discovered novel death modes. Our analysis highlights the common and unique pathways of these death modes, as well as their impact on surrounding cells and the organism as a whole. Our aim was to provide a comprehensive overview of the current state of research on cell death, with a focus on identifying gaps in our knowledge and opportunities for future investigation. We also presented a new insight for macroscopic intracellular survival patterns, namely that intracellular molecular homeostasis is central to the balance of different cell death modes, and this viewpoint can be well justified by the signaling crosstalk of different death modes. These concepts can facilitate the future research about cell death in clinical diagnosis, drug development, and therapeutic modalities.
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Affiliation(s)
- Lei-Yun Wang
- Department of Pharmacy, Traditional Chinese and Western Medicine Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, People's Republic of China
- Department of Pharmacy, Wuhan No.1 Hospital, Wuhan, 430022, Hubei, People's Republic of China
| | - Xing-Jian Liu
- Oujiang Laboratory, Key Laboratory of Alzheimer's Disease of Zhejiang Province, Institute of Aging, Wenzhou Medical University, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Qiu-Qi Li
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, People's Republic of China
| | - Ying Zhu
- Department of Pharmacy, Traditional Chinese and Western Medicine Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, People's Republic of China
- Department of Pharmacy, Wuhan No.1 Hospital, Wuhan, 430022, Hubei, People's Republic of China
| | - Hui-Li Ren
- Department of Pharmacy, Traditional Chinese and Western Medicine Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, People's Republic of China
- Department of Pharmacy, Wuhan No.1 Hospital, Wuhan, 430022, Hubei, People's Republic of China
| | - Jia-Nan Song
- Oujiang Laboratory, Key Laboratory of Alzheimer's Disease of Zhejiang Province, Institute of Aging, Wenzhou Medical University, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Jun Zeng
- Department of Thoracic Surgery, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, People's Republic of China
| | - Jie Mei
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, People's Republic of China
- Institute of Clinical Pharmacology, Hunan Key Laboratory of Pharmacogenetics, Central South University, Changsha, 410008, Hunan, People's Republic of China
- Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, 110 Xiangya Road, Changsha, 410008, Hunan, People's Republic of China
- National Clinical Research Center for Geriatric Disorders, 87 Xiangya Road, Changsha, 410008, Hunan, People's Republic of China
| | - Hui-Xiang Tian
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, People's Republic of China.
| | - Ding-Chao Rong
- Department of Orthopaedic Surgery, The Third Affiliated Hospital, Guangzhou Medical University, Guangzhou, 510150, Guangdong, People's Republic of China.
| | - Shao-Hui Zhang
- Department of Pharmacy, Traditional Chinese and Western Medicine Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, People's Republic of China.
- Department of Pharmacy, Wuhan No.1 Hospital, Wuhan, 430022, Hubei, People's Republic of China.
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Jetton D, Muendlein HI, Connolly WM, Magri Z, Smirnova I, Batorsky R, Mecsas J, Degterev A, Poltorak A. Non-canonical autophosphorylation of RIPK1 drives timely pyroptosis to control Yersinia infection. Cell Rep 2024; 43:114641. [PMID: 39154339 PMCID: PMC11465231 DOI: 10.1016/j.celrep.2024.114641] [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: 04/24/2024] [Revised: 06/17/2024] [Accepted: 07/31/2024] [Indexed: 08/20/2024] Open
Abstract
Caspase-8-dependent pyroptosis has been shown to mediate host protection from Yersinia infection. For this mode of cell death, the kinase activity of receptor-interacting protein kinase 1 (RIPK1) is required, but the autophosphorylation sites required to drive caspase-8 activation have not been determined. Here, we show that non-canonical autophosphorylation of RIPK1 at threonine 169 (T169) is necessary for caspase-8-mediated pyroptosis. Mice with alanine in the T169 position are highly susceptible to Yersinia dissemination. Mechanistically, the delayed formation of a complex containing RIPK1, ZBP1, Fas-associated protein with death domain (FADD), and caspase-8 abrogates caspase-8 maturation in T169A mice and leads to the eventual activation of RIPK3-dependent necroptosis in vivo; however, this is insufficient to protect the host, suggesting that timely pyroptosis during early response is specifically required to control infection. These results position RIPK1 T169 phosphorylation as a driver of pyroptotic cell death critical for host defense.
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Affiliation(s)
- David Jetton
- Graduate Program in Immunology, Tufts Graduate School of Biomedical Sciences, Boston, MA 02111, USA
| | - Hayley I Muendlein
- Department of Immunology, Tufts University School of Medicine, Boston, MA 02111, USA
| | - Wilson M Connolly
- Department of Immunology, Tufts University School of Medicine, Boston, MA 02111, USA
| | - Zoie Magri
- Graduate Program in Immunology, Tufts Graduate School of Biomedical Sciences, Boston, MA 02111, USA
| | - Irina Smirnova
- Department of Immunology, Tufts University School of Medicine, Boston, MA 02111, USA
| | - Rebecca Batorsky
- Data Intensive Studies Center, Tufts University, Medford, MA 02155, USA
| | - Joan Mecsas
- Department of Molecular Biology and Microbiology, Tufts University School of Medicine, Boston, MA 02111, USA
| | - Alexei Degterev
- Department of Cell, Molecular & Developmental Biology, Tufts University School of Medicine, Boston, MA 02111, USA
| | - Alexander Poltorak
- Graduate Program in Immunology, Tufts Graduate School of Biomedical Sciences, Boston, MA 02111, USA; Department of Immunology, Tufts University School of Medicine, Boston, MA 02111, USA.
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11
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Xian S, Yang Y, Nan N, Fu X, Shi J, Wu Q, Zhou S. Inhibition of mitochondrial ROS-mediated necroptosis by Dendrobium nobile Lindl. alkaloids in carbon tetrachloride induced acute liver injury. JOURNAL OF ETHNOPHARMACOLOGY 2024; 330:118253. [PMID: 38679400 DOI: 10.1016/j.jep.2024.118253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 04/12/2024] [Accepted: 04/22/2024] [Indexed: 05/01/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Dendrobium nobile Lindl. (DNL) is a well-known traditional Chinese medicine that has been recorded in the Chinese Pharmacopoeia (2020 edition). The previous data showed that Dendrobium nobile Lindl. alkaloids (DNLA) protect against CCl4-induced liver damage via oxidative stress reduction and mitochondrial function improvement, yet the exact regulatory signaling pathways remain undefined. AIM OF THE STUDY The aim of the present study was to investigate the role of necroptosis in the mode of CCl4-induced liver injury and determine whether DNLA protects against CCl4-induced acute liver injury (ALI) by inhibiting mitochondrial ROS (mtROS)-mediated necroptosis. MATERIALS AND METHODS DNLA was extracted from DNL, and the content was determined using liquid chromatograph mass spectrometer (LC-MS). In vivo experiments were conducted in C57BL/6J mice. Animals were administrated with DNLA (20 mg/kg/day, ig) for 7 days, and then challenged with CCl4 (20 μL/kg, ip). CCl4-induced liver injury in mice was evaluated through the assessment of biochemical indicators in mouse serum and histopathological examination of hepatic tissue using hematoxylin and eosin (H&E) staining. The protein and gene expressions were determined with western blotting and quantitative real-time PCR (RT-qPCR). Reactive oxygen species (ROS) production was detected using the fluorescent probe DCFH-DA, and mitochondrial membrane potential was evaluated using a fluorescent probe JC-1. The mtROS level was assessed using a fluorescence probe MitoSOX. RESULTS DNLA lessened CCl4-induced liver injury, evident by reduced AST and ALT levels and improved liver pathology. DNLA suppressed necroptosis by decreasing RIPK1, RIPK3, and MLKL phosphorylation, concurrently enhancing mitochondrial function. It also broke the positive feedback loop between mtROS and RIPK1/RIPK3/MLKL activation. Similar findings were observed with resveratrol and mitochondrial SOD2 overexpression, both mitigating mtROS and necroptosis. Further mechanistic studies found that DNLA inhibited the oxidation of RIPK1 and reduced its phosphorylation level, whereby lowering the phosphorylation of RIPK3 and MLKL, blocking necroptosis, and alleviating liver injury. CONCLUSIONS This study demonstrates that DNLA inhibits the necroptosis signaling pathway by reducing mtROS mediated oxidation of RIPK1, thereby reducing the phosphorylation of RIPK1, RIPK3, and MLKL, and protecting against liver injury.
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Affiliation(s)
- Siting Xian
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China; School of Pharmacy, Zunyi Medical University, Zunyi, China
| | - Yonggang Yang
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China; School of Pharmacy, Zunyi Medical University, Zunyi, China
| | - Nan Nan
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China; School of Pharmacy, Zunyi Medical University, Zunyi, China
| | - Xiaolong Fu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China; School of Pharmacy, Zunyi Medical University, Zunyi, China
| | - Jingshan Shi
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China; School of Pharmacy, Zunyi Medical University, Zunyi, China
| | - Qin Wu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China; School of Pharmacy, Zunyi Medical University, Zunyi, China
| | - Shaoyu Zhou
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China; School of Pharmacy, Zunyi Medical University, Zunyi, China.
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12
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Yadav S, El Hamra R, Alturki NA, Ariana A, Bhan A, Hurley K, Gaestel M, Blackshear PJ, Blais A, Sad S. Regulation of Zfp36 by ISGF3 and MK2 restricts the expression of inflammatory cytokines during necroptosis stimulation. Cell Death Dis 2024; 15:574. [PMID: 39117638 PMCID: PMC11310327 DOI: 10.1038/s41419-024-06964-4] [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: 01/22/2024] [Revised: 07/29/2024] [Accepted: 07/31/2024] [Indexed: 08/10/2024]
Abstract
Necrosome activation following TLR- or cytokine receptor-signaling results in cell death by necroptosis which is characterized by the rupture of cell membranes and the consequent release of intracellular contents to the extracellular milieu. While necroptosis exacerbates various inflammatory diseases, the mechanisms through which the inflammatory responses are regulated are not clear. We show that the necrosome activation of macrophages results in an upregulation of various pathways, including the mitogen-activated protein kinase (MAPK) cascade, which results in an elevation of the inflammatory response and consequent expression of several cytokines and chemokines. Programming for this upregulation of inflammatory response occurs during the early phase of necrosome activation and proceeds independently of cell death but depends on the activation of the receptor-interacting protein kinase-1 (RipK1). Interestingly, necrosome activation also results in an upregulation of IFNβ, which in turn exerts an inhibitory effect on the maintenance of inflammatory response through the repression of MAPK-signaling and an upregulation of Zfp36. Activation of the interferon-induced gene factor-3 (ISGF3) results in the expression of ZFP36 (TTP), which induces the post-transcriptional degradation of mRNAs of various inflammatory cytokines and chemokines through the recognition of AU-rich elements in their 3'UTR. Furthermore, ZFP-36 inhibits IFNβ-, but not TNFα- induced necroptosis. Overall, these results reveal the molecular mechanism through which IFNβ, a pro-inflammatory cytokine, induces the expression of ZFP-36, which in turn inhibits necroptosis and halts the maintenance of the inflammatory response.
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Affiliation(s)
- Sahil Yadav
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Rayan El Hamra
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Norah A Alturki
- Clinical Laboratory Science Department, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Ardeshir Ariana
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Avni Bhan
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Kate Hurley
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Matthias Gaestel
- Institute of Cell Biochemistry, Hannover Medical School, Hannover, Germany
| | - Perry J Blackshear
- Signal Transduction Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, Durham, North Carolina, United States of America
| | - Alexandre Blais
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
- Ottawa Institute of Systems Biology, Ottawa, ON, Canada
- University of Ottawa, Centre for Infection Immunity and Inflammation, Ottawa, ON, Canada
- University of Ottawa Brain and Mind Research Institute, Ottawa, ON, Canada
| | - Subash Sad
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada.
- University of Ottawa, Centre for Infection Immunity and Inflammation, Ottawa, ON, Canada.
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13
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Svandova E, Vesela B, Janeckova E, Chai Y, Matalova E. Exploring caspase functions in mouse models. Apoptosis 2024; 29:938-966. [PMID: 38824481 PMCID: PMC11263464 DOI: 10.1007/s10495-024-01976-z] [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] [Accepted: 05/02/2024] [Indexed: 06/03/2024]
Abstract
Caspases are enzymes with protease activity. Despite being known for more than three decades, caspase investigation still yields surprising and fascinating information. Initially associated with cell death and inflammation, their functions have gradually been revealed to extend beyond, targeting pathways such as cell proliferation, migration, and differentiation. These processes are also associated with disease mechanisms, positioning caspases as potential targets for numerous pathologies including inflammatory, neurological, metabolic, or oncological conditions. While in vitro studies play a crucial role in elucidating molecular pathways, they lack the context of the body's complexity. Therefore, laboratory animals are an indispensable part of successfully understanding and applying caspase networks. This paper aims to summarize and discuss recent knowledge, understanding, and challenges in caspase knock-out mice.
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Affiliation(s)
- Eva Svandova
- Laboratory of Odontogenesis and Osteogenesis, Institute of Animal Physiology and Genetic, Brno, Czech Republic.
| | - Barbora Vesela
- Laboratory of Odontogenesis and Osteogenesis, Institute of Animal Physiology and Genetic, Brno, Czech Republic
| | - Eva Janeckova
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, USA
| | - Yang Chai
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, USA
| | - Eva Matalova
- Laboratory of Odontogenesis and Osteogenesis, Institute of Animal Physiology and Genetic, Brno, Czech Republic
- Department of Physiology, University of Veterinary Sciences, Brno, Czech Republic
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14
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Nataraj NM, Sillas RG, Herrmann BI, Shin S, Brodsky IE. Blockade of IKK signaling induces RIPK1-independent apoptosis in human macrophages. PLoS Pathog 2024; 20:e1012469. [PMID: 39186805 PMCID: PMC11407650 DOI: 10.1371/journal.ppat.1012469] [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: 07/06/2023] [Revised: 09/17/2024] [Accepted: 07/31/2024] [Indexed: 08/28/2024] Open
Abstract
Regulated cell death in response to microbial infection plays an important role in immune defense and is triggered by pathogen disruption of essential cellular pathways. Gram-negative bacterial pathogens in the Yersinia genus disrupt NF-κB signaling via translocated effectors injected by a type III secretion system, thereby preventing induction of cytokine production and antimicrobial defense. In murine models of infection, Yersinia blockade of NF-κB signaling triggers cell-extrinsic apoptosis through Receptor Interacting Serine-Threonine Protein Kinase 1 (RIPK1) and caspase-8, which is required for bacterial clearance and host survival. Unexpectedly, we find that human macrophages undergo apoptosis independently of RIPK1 in response to Yersinia or chemical blockade of IKKβ. Instead, IKK blockade led to decreased cFLIP expression, and overexpression of cFLIP contributed to protection from IKK blockade-induced apoptosis in human macrophages. We found that IKK blockade also induces RIPK1 kinase activity-independent apoptosis in human T cells and human pancreatic cells. Altogether, our data indicate that, in contrast to murine cells, blockade of IKK activity in human cells triggers a distinct apoptosis pathway that is independent of RIPK1 kinase activity. These findings have implications for the contribution of RIPK1 to cell death in human cells and the efficacy of RIPK1 inhibition in human diseases.
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Affiliation(s)
- Neha M Nataraj
- Institute for Immunology & Immune Health, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, United States of America
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, Pennsylvania, United States of America
- Department of Microbiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Reyna Garcia Sillas
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, Pennsylvania, United States of America
| | - Beatrice I Herrmann
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, Pennsylvania, United States of America
| | - Sunny Shin
- Institute for Immunology & Immune Health, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, United States of America
- Department of Microbiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Igor E Brodsky
- Institute for Immunology & Immune Health, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, United States of America
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, Pennsylvania, United States of America
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15
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Zhang C, Zhou Y, Xi S, Han D, Wang Z, Zhu J, Cai Y, Zhang H, Jin G, Mi Y. The TRIF-RIPK1-Caspase-8 signalling in the regulation of TLR4-driven gene expression. Immunology 2024; 172:566-576. [PMID: 38618995 DOI: 10.1111/imm.13795] [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: 12/20/2023] [Accepted: 04/05/2024] [Indexed: 04/16/2024] Open
Abstract
The inflammatory response is tightly regulated to eliminate invading pathogens and avoid excessive production of inflammatory mediators and tissue damage. Caspase-8 is a cysteine protease that is involved in programmed cell death. Here we show the TRIF-RIPK1-Caspase-8 is required for LPS-induced CYLD degradation in macrophages. TRIF functions in the upstream of RIPK1. The homotypic interaction motif of TRIF and the death domain of RIPK1 are essential for Caspase-8 activation. Caspase-8 cleaves CYLD and the D235A mutant is resistant to the protease activity of Caspase-8. TRIF and RIPK1 serve as substrates of Capase-8 in vitro. cFLIP interacts with Caspase-8 to modulate its protease activity on CYLD and cell death. Deficiency in TRIF, Caspase-8 or CYLD can lead to a decrease or increase in the expression of genes encoding inflammatory cytokines. Together, the TRIF-Caspase-8 and CYLD play opposite roles in the regulation of TLR4 signalling.
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Affiliation(s)
- Chengyang Zhang
- Department of Biochemistry and molecular biology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Yang Zhou
- Department of Biochemistry and molecular biology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Shuangtong Xi
- Department of Biochemistry and molecular biology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Danlin Han
- Department of Biochemistry and molecular biology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Ziyu Wang
- Department of Biochemistry and molecular biology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Jingwen Zhu
- Department of Biochemistry and molecular biology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Yizhe Cai
- Department of Biochemistry and molecular biology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Haifeng Zhang
- Department of Biochemistry and molecular biology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Ge Jin
- Department of Biochemistry and molecular biology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Yang Mi
- Department of Biochemistry and molecular biology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
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16
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Wertman RS, Yost W, Herrmann BI, Bourne CM, Sorobetea D, Go CK, Saller BS, Groß O, Scott P, Rongvaux A, Taabazuing CY, Brodsky IE. Distinct sequential death complexes regulate pyroptosis and IL-1β release in response to Yersinia blockade of immune signaling. SCIENCE ADVANCES 2024; 10:eadl3629. [PMID: 39058785 PMCID: PMC11277400 DOI: 10.1126/sciadv.adl3629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 06/25/2024] [Indexed: 07/28/2024]
Abstract
Pathogen infection of host cells triggers an inflammatory cell death termed pyroptosis via activation of inflammatory caspases. However, blockade of immune signaling kinases by the Yersinia virulence factor YopJ triggers cell death involving both apoptotic caspase-8 and pyroptotic caspase-1. While caspase-1 is normally activated within inflammasomes, Yersinia-induced caspase-1 activation is independent of known inflammasome components. We report that caspase-8 is an essential initiator, while caspase-1 is an essential amplifier of its own activation through two feed-forward loops involving caspase-1 auto-processing and caspase-1-dependent activation of gasdermin D and NLPR3. Notably, while Yersinia-induced caspase-1 activation and cell death are inflammasome-independent, IL-1β release requires NLPR3 inflammasome activation. Mechanistically, caspase-8 is rapidly activated within multiple foci throughout the cell, followed by assembly of a canonical inflammasome speck, indicating that caspase-8 and canonical inflammasome complex assemblies are kinetically and spatially distinct. Our findings reveal that functionally interconnected but distinct death complexes mediate pyroptosis and IL-1β release in response to pathogen blockade of immune signaling.
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Affiliation(s)
- Ronit Schwartz Wertman
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA 19104, USA
| | - Winslow Yost
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA 19104, USA
| | - Beatrice I. Herrmann
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA 19104, USA
| | - Christopher M. Bourne
- Department of Biochemistry and Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Daniel Sorobetea
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA 19104, USA
| | - Christina K. Go
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA 19104, USA
| | - Benedikt S. Saller
- Institute of Neuropathology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
- Faculty of Biology, University of Freiburg, Freiburg 79106, Germany
| | - Olaf Groß
- Institute of Neuropathology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
- Signalling Research Centres BIOSS and CIBSS, University of Freiburg, Freiburg 79106, Germany
| | - Phillip Scott
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA 19104, USA
| | - Anthony Rongvaux
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA
- Department of Immunology, University of Washington, Seattle, WA 98195, USA
| | - Cornelius Y. Taabazuing
- Department of Biochemistry and Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Igor E. Brodsky
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA 19104, USA
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17
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Sundaram B, Pandian N, Kim HJ, Abdelaal HM, Mall R, Indari O, Sarkar R, Tweedell RE, Alonzo EQ, Klein J, Pruett-Miller SM, Vogel P, Kanneganti TD. NLRC5 senses NAD + depletion, forming a PANoptosome and driving PANoptosis and inflammation. Cell 2024; 187:4061-4077.e17. [PMID: 38878777 PMCID: PMC11283362 DOI: 10.1016/j.cell.2024.05.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 04/01/2024] [Accepted: 05/17/2024] [Indexed: 07/28/2024]
Abstract
NLRs constitute a large, highly conserved family of cytosolic pattern recognition receptors that are central to health and disease, making them key therapeutic targets. NLRC5 is an enigmatic NLR with mutations associated with inflammatory and infectious diseases, but little is known about its function as an innate immune sensor and cell death regulator. Therefore, we screened for NLRC5's role in response to infections, PAMPs, DAMPs, and cytokines. We identified that NLRC5 acts as an innate immune sensor to drive inflammatory cell death, PANoptosis, in response to specific ligands, including PAMP/heme and heme/cytokine combinations. NLRC5 interacted with NLRP12 and PANoptosome components to form a cell death complex, suggesting an NLR network forms similar to those in plants. Mechanistically, TLR signaling and NAD+ levels regulated NLRC5 expression and ROS production to control cell death. Furthermore, NLRC5-deficient mice were protected in hemolytic and inflammatory models, suggesting that NLRC5 could be a potential therapeutic target.
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Affiliation(s)
- Balamurugan Sundaram
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Nagakannan Pandian
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Hee Jin Kim
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Hadia M Abdelaal
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Raghvendra Mall
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Omkar Indari
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Roman Sarkar
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Rebecca E Tweedell
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Emily Q Alonzo
- Department of Research and Development, Cell Signaling Technology, Danvers, MA 01915, USA
| | - Jonathon Klein
- Center for Advanced Genome Engineering, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Shondra M Pruett-Miller
- Center for Advanced Genome Engineering, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Peter Vogel
- Animal Resources Center and the Veterinary Pathology Core, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
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18
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Tan X, He Y, Yu P, Deng Y, Xie Z, Guo J, Hou Q, Li P, Lin X, Ouyang S, Ma W, Xie Y, Guo Z, Chen D, Zhang Z, Zhu Y, Huang F, Zhao Z, Zhang C, Guo Z, Chen X, Peng T, Li L, Xie W. The dual role of FSP1 in programmed cell death: resisting ferroptosis in the cell membrane and promoting necroptosis in the nucleus of THP-1 cells. Mol Med 2024; 30:102. [PMID: 39009982 PMCID: PMC11247902 DOI: 10.1186/s10020-024-00861-4] [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: 02/02/2024] [Accepted: 06/10/2024] [Indexed: 07/17/2024] Open
Abstract
BACKGROUND Acute monocytic leukemia-M5 (AML-M5) remains a challenging disease due to its high morbidity and poor prognosis. In addition to the evidence mentioned earlier, several studies have shown that programmed cell death (PCD) serves a critical function in treatment of AML-M5. However, the role and relationship between ferroptosis and necroptosis in AML-M5 remains unclear. METHODS THP-1 cells were mainly treated with Erastin and IMP-366. The changes of ferroptosis and necroptosis levels were detected by CCK-8, western blot, quantitative real-time PCR, and electron microscopy. Flow cytometry was applied to detect the ROS and lipid ROS levels. MDA, 4-HNE, GSH and GSSG were assessed by ELISA kits. Intracellular distribution of FSP1 was studied by immunofluorescent staining and western blot. RESULTS The addition of the myristoylation inhibitor IMP-366 to erastin-treated acute monocytic leukemia cell line THP-1 cell not only resulted in greater susceptibility to ferroptosis characterized by lipid peroxidation, glutathione (GSH) depletion and mitochondrial shrinkage, as the FSP1 position on membrane was inhibited, but also increased p-RIPK1 and p-MLKL protein expression, as well as a decrease in caspase-8 expression, and triggered the characteristic necroptosis phenomena, including cytoplasmic translucency, mitochondrial swelling, membranous fractures by FSP1 migration into the nucleus via binding importin α2. It is interesting to note that ferroptosis inhibitor fer-1 reversed necroptosis. CONCLUSION We demonstrated that inhibition of myristoylation by IMP-366 is capable of switching ferroptosis and ferroptosis-dependent necroptosis in THP-1 cells. In these findings, FSP1-mediated ferroptosis and necroptosis are described as alternative mechanisms of PCD of THP-1 cells, providing potential therapeutic strategies and targets for AML-M5.
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Affiliation(s)
- Xiaoqian Tan
- Department of Physiology, Clinical Anatomy and Reproductive Medicine Application Institute, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
- School of Basic Medical Sciences, Xiangnan University, Chenzhou, 423000, Hunan, China
| | - Yinling He
- Department of Physiology, Clinical Anatomy and Reproductive Medicine Application Institute, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
| | - Panpan Yu
- Department of Physiology, Clinical Anatomy and Reproductive Medicine Application Institute, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
| | - Yunong Deng
- Department of Physiology, Clinical Anatomy and Reproductive Medicine Application Institute, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
| | - Zhongcheng Xie
- Department of Physiology, Clinical Anatomy and Reproductive Medicine Application Institute, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
| | - Jiami Guo
- Department of Physiology, Clinical Anatomy and Reproductive Medicine Application Institute, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
| | - Qin Hou
- Department of Physiology, Clinical Anatomy and Reproductive Medicine Application Institute, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
| | - Pin Li
- Department of Physiology, Clinical Anatomy and Reproductive Medicine Application Institute, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
| | - Xiaoyan Lin
- Department of Physiology, Clinical Anatomy and Reproductive Medicine Application Institute, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
| | - Siyu Ouyang
- Department of Physiology, Clinical Anatomy and Reproductive Medicine Application Institute, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
| | - Wentao Ma
- Department of Physiology, Clinical Anatomy and Reproductive Medicine Application Institute, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
| | - Yushu Xie
- Class of Clinical Medicine, University of South China, Hengyang, 421001, Hunan, China
| | - Zilong Guo
- Class of Clinical Medicine, University of South China, Hengyang, 421001, Hunan, China
| | - Dandan Chen
- Class of Clinical Medicine, University of South China, Hengyang, 421001, Hunan, China
| | - Zhixia Zhang
- Class of Clinical Medicine, University of South China, Hengyang, 421001, Hunan, China
| | - Yunyu Zhu
- Class of Clinical Medicine, University of South China, Hengyang, 421001, Hunan, China
| | - Fei Huang
- Class of Clinical Medicine, University of South China, Hengyang, 421001, Hunan, China
| | - Ziye Zhao
- Class of Clinical Medicine, University of South China, Hengyang, 421001, Hunan, China
| | - Cen Zhang
- Class of Clinical Medicine, University of South China, Hengyang, 421001, Hunan, China
| | - Zhirong Guo
- Class of Clinical Medicine, University of South China, Hengyang, 421001, Hunan, China
| | - Xi Chen
- Department of Physiology, Clinical Anatomy and Reproductive Medicine Application Institute, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
| | - Tianhong Peng
- Department of Physiology, Clinical Anatomy and Reproductive Medicine Application Institute, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China.
| | - Liang Li
- Department of Physiology, Clinical Anatomy and Reproductive Medicine Application Institute, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China.
| | - Wei Xie
- Department of Physiology, Clinical Anatomy and Reproductive Medicine Application Institute, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China.
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19
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Osbron CA, Lawson C, Hanna N, Koehler HS, Goodman AG. Caspase-8 activity mediates TNFα production and restricts Coxiella burnetii replication during murine macrophage infection. Infect Immun 2024; 92:e0005324. [PMID: 38837340 PMCID: PMC11238558 DOI: 10.1128/iai.00053-24] [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: 01/31/2024] [Accepted: 05/14/2024] [Indexed: 06/07/2024] Open
Abstract
Coxiella burnetii is an obligate intracellular bacteria that causes the global zoonotic disease Q Fever. Treatment options for chronic infection are limited, and the development of novel therapeutic strategies requires a greater understanding of how C. burnetii interacts with immune signaling. Cell death responses are known to be manipulated by C. burnetii, but the role of caspase-8, a central regulator of multiple cell death pathways, has not been investigated. In this research, we studied bacterial manipulation of caspase-8 signaling and the significance of caspase-8 to C. burnetii infection, examining bacterial replication, cell death induction, and cytokine signaling. We measured caspase, RIPK, and MLKL activation in C. burnetii-infected tumor necrosis factor alpha (TNFα)/cycloheximide-treated THP-1 macrophage-like cells and TNFα/ZVAD-treated L929 cells to assess apoptosis and necroptosis signaling. Additionally, we measured C. burnetii replication, cell death, and TNFα induction over 12 days in RIPK1-kinase-dead, RIPK3-kinase-dead, or RIPK3-kinase-dead-caspase-8-/- bone marrow-derived macrophages (BMDMs) to understand the significance of caspase-8 and RIPK1/3 during infection. We found that caspase-8 is inhibited by C. burnetii, coinciding with inhibition of apoptosis and increased susceptibility to necroptosis. Furthermore, C. burnetii replication was increased in BMDMs lacking caspase-8, but not in those lacking RIPK1/3 kinase activity, corresponding with decreased TNFα production and reduced cell death. As TNFα is associated with the control of C. burnetii, this lack of a TNFα response may allow for the unchecked bacterial growth we saw in caspase-8-/- BMDMs. This research identifies and explores caspase-8 as a key regulator of C. burnetii infection, opening novel therapeutic doors.
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Affiliation(s)
- Chelsea A. Osbron
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Crystal Lawson
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Nolan Hanna
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Heather S. Koehler
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Alan G. Goodman
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
- Paul G. Allen School for Global Health, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
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20
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Mannion J, Gifford V, Bellenie B, Fernando W, Ramos Garcia L, Wilson R, John SW, Udainiya S, Patin EC, Tiu C, Smith A, Goicoechea M, Craxton A, Moraes de Vasconcelos N, Guppy N, Cheung KMJ, Cundy NJ, Pierrat O, Brennan A, Roumeliotis TI, Benstead-Hume G, Alexander J, Muirhead G, Layzell S, Lyu W, Roulstone V, Allen M, Baldock H, Legrand A, Gabel F, Serrano-Aparicio N, Starling C, Guo H, Upton J, Gyrd-Hansen M, MacFarlane M, Seddon B, Raynaud F, Roxanis I, Harrington K, Haider S, Choudhary JS, Hoelder S, Tenev T, Meier P. A RIPK1-specific PROTAC degrader achieves potent antitumor activity by enhancing immunogenic cell death. Immunity 2024; 57:1514-1532.e15. [PMID: 38788712 PMCID: PMC11236506 DOI: 10.1016/j.immuni.2024.04.025] [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: 07/10/2023] [Revised: 02/14/2024] [Accepted: 04/25/2024] [Indexed: 05/26/2024]
Abstract
Receptor-interacting serine/threonine-protein kinase 1 (RIPK1) functions as a critical stress sentinel that coordinates cell survival, inflammation, and immunogenic cell death (ICD). Although the catalytic function of RIPK1 is required to trigger cell death, its non-catalytic scaffold function mediates strong pro-survival signaling. Accordingly, cancer cells can hijack RIPK1 to block necroptosis and evade immune detection. We generated a small-molecule proteolysis-targeting chimera (PROTAC) that selectively degraded human and murine RIPK1. PROTAC-mediated depletion of RIPK1 deregulated TNFR1 and TLR3/4 signaling hubs, accentuating the output of NF-κB, MAPK, and IFN signaling. Additionally, RIPK1 degradation simultaneously promoted RIPK3 activation and necroptosis induction. We further demonstrated that RIPK1 degradation enhanced the immunostimulatory effects of radio- and immunotherapy by sensitizing cancer cells to treatment-induced TNF and interferons. This promoted ICD, antitumor immunity, and durable treatment responses. Consequently, targeting RIPK1 by PROTACs emerges as a promising approach to overcome radio- or immunotherapy resistance and enhance anticancer therapies.
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Affiliation(s)
- Jonathan Mannion
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, Fulham Road, London SW3 6JB, UK
| | - Valentina Gifford
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, Fulham Road, London SW3 6JB, UK
| | - Benjamin Bellenie
- Centre for Cancer Drug Discovery at the Institute of Cancer Research, London SM2 5NG, UK
| | - Winnie Fernando
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, Fulham Road, London SW3 6JB, UK
| | - Laura Ramos Garcia
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, Fulham Road, London SW3 6JB, UK
| | - Rebecca Wilson
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, Fulham Road, London SW3 6JB, UK
| | - Sidonie Wicky John
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, Fulham Road, London SW3 6JB, UK
| | - Savita Udainiya
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, Fulham Road, London SW3 6JB, UK
| | - Emmanuel C Patin
- Division of Radiotherapy and Imaging, The Institute of Cancer Research, London SW3 6JB, UK
| | - Crescens Tiu
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, Fulham Road, London SW3 6JB, UK
| | - Angel Smith
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, Fulham Road, London SW3 6JB, UK
| | - Maria Goicoechea
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, Fulham Road, London SW3 6JB, UK
| | - Andrew Craxton
- MRC Toxicology Unit, University of Cambridge, Gleeson Building, Cambridge CB2 1QR, UK
| | | | - Naomi Guppy
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, Fulham Road, London SW3 6JB, UK
| | - Kwai-Ming J Cheung
- Centre for Cancer Drug Discovery at the Institute of Cancer Research, London SM2 5NG, UK
| | - Nicholas J Cundy
- Centre for Cancer Drug Discovery at the Institute of Cancer Research, London SM2 5NG, UK
| | - Olivier Pierrat
- Centre for Cancer Drug Discovery at the Institute of Cancer Research, London SM2 5NG, UK
| | - Alfie Brennan
- Centre for Cancer Drug Discovery at the Institute of Cancer Research, London SM2 5NG, UK
| | | | - Graeme Benstead-Hume
- Functional Proteomics Group, The Institute of Cancer Research, London SW3 6JB, UK
| | - John Alexander
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, Fulham Road, London SW3 6JB, UK
| | - Gareth Muirhead
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, Fulham Road, London SW3 6JB, UK
| | - Scott Layzell
- Institute of Immunity and Transplantation, University College London, London NW3 2PP, UK
| | - Wenxin Lyu
- Department of Immunology and Microbiology, LEO Foundation Skin Immunology Research Center, University of Copenhagen, Copenhagen, Denmark
| | - Victoria Roulstone
- Division of Radiotherapy and Imaging, The Institute of Cancer Research, London SW3 6JB, UK
| | - Mark Allen
- Biological Services Unit, The Institute of Cancer Research, London SW3 6JB, UK
| | - Holly Baldock
- Biological Services Unit, The Institute of Cancer Research, London SW3 6JB, UK
| | - Arnaud Legrand
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, Fulham Road, London SW3 6JB, UK
| | - Florian Gabel
- Centre for Cancer Drug Discovery at the Institute of Cancer Research, London SM2 5NG, UK
| | | | - Chris Starling
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, Fulham Road, London SW3 6JB, UK
| | - Hongyan Guo
- Department of Microbiology and Immunology, LSU Health Shreveport, Shreveport, LA, USA
| | - Jason Upton
- Department of Biological Sciences, Auburn University, Auburn, AL, USA
| | - Mads Gyrd-Hansen
- Department of Immunology and Microbiology, LEO Foundation Skin Immunology Research Center, University of Copenhagen, Copenhagen, Denmark
| | - Marion MacFarlane
- MRC Toxicology Unit, University of Cambridge, Gleeson Building, Cambridge CB2 1QR, UK
| | - Benedict Seddon
- Institute of Immunity and Transplantation, University College London, London NW3 2PP, UK
| | - Florence Raynaud
- Centre for Cancer Drug Discovery at the Institute of Cancer Research, London SM2 5NG, UK
| | - Ioannis Roxanis
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, Fulham Road, London SW3 6JB, UK
| | - Kevin Harrington
- Division of Radiotherapy and Imaging, The Institute of Cancer Research, London SW3 6JB, UK
| | - Syed Haider
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, Fulham Road, London SW3 6JB, UK
| | - Jyoti S Choudhary
- Functional Proteomics Group, The Institute of Cancer Research, London SW3 6JB, UK
| | - Swen Hoelder
- Centre for Cancer Drug Discovery at the Institute of Cancer Research, London SM2 5NG, UK
| | - Tencho Tenev
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, Fulham Road, London SW3 6JB, UK.
| | - Pascal Meier
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, Fulham Road, London SW3 6JB, UK.
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21
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Imai T, Lin J, Kaya GG, Ju E, Kondylis V, Kelepouras K, Liccardi G, Kim C, Pasparakis M. The RIPK1 death domain restrains ZBP1- and TRIF-mediated cell death and inflammation. Immunity 2024; 57:1497-1513.e6. [PMID: 38744293 DOI: 10.1016/j.immuni.2024.04.016] [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: 07/04/2023] [Revised: 02/05/2024] [Accepted: 04/17/2024] [Indexed: 05/16/2024]
Abstract
RIPK1 is a multi-functional kinase that regulates cell death and inflammation and has been implicated in the pathogenesis of inflammatory diseases. RIPK1 acts in a kinase-dependent and kinase-independent manner to promote or suppress apoptosis and necroptosis, but the underlying mechanisms remain poorly understood. Here, we show that a mutation (R588E) disrupting the RIPK1 death domain (DD) caused perinatal lethality induced by ZBP1-mediated necroptosis. Additionally, these mice developed postnatal inflammatory pathology, which was mediated by necroptosis-independent TNFR1, TRADD, and TRIF signaling, partially requiring RIPK3. Our biochemical mechanistic studies revealed that ZBP1- and TRIF-mediated activation of RIPK3 required RIPK1 kinase activity in wild-type cells but not in Ripk1R588E/R588E cells, suggesting that DD-dependent oligomerization of RIPK1 and its interaction with FADD determine the mechanisms of RIPK3 activation by ZBP1 and TRIF. Collectively, these findings revealed a critical physiological role of DD-dependent RIPK1 signaling that is important for the regulation of tissue homeostasis and inflammation.
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Affiliation(s)
- Takashi Imai
- Institute for Genetics, University of Cologne, 50674 Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931 Cologne, Germany
| | - Juan Lin
- Institute for Genetics, University of Cologne, 50674 Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931 Cologne, Germany; Research Unit of Cellular Stress of Chinese Academy of Medical Sciences, Cancer Research Center of Xiamen University, School of Medicine, Xiamen University, Xiamen, China.
| | - Göksu Gökberk Kaya
- Institute for Genetics, University of Cologne, 50674 Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931 Cologne, Germany
| | - Eunjin Ju
- Institute for Genetics, University of Cologne, 50674 Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931 Cologne, Germany
| | - Vangelis Kondylis
- Center for Molecular Medicine (CMMC), University of Cologne, 50931 Cologne, Germany; Institute of Pathology, Faculty of Medicine and University Hospital Cologne, 50931 Cologne, Germany
| | - Konstantinos Kelepouras
- Institute of Biochemistry I, Center for Biochemistry, Faculty of Medicine, University of Cologne, Joseph-Stelzmann-Str. 52, 50931 Cologne, Germany
| | - Gianmaria Liccardi
- Center for Molecular Medicine (CMMC), University of Cologne, 50931 Cologne, Germany; Institute of Biochemistry I, Center for Biochemistry, Faculty of Medicine, University of Cologne, Joseph-Stelzmann-Str. 52, 50931 Cologne, Germany
| | - Chun Kim
- Institute for Genetics, University of Cologne, 50674 Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931 Cologne, Germany; Department of Medicinal and Life Sciences, Hanyang University (ERICA Campus), Ansan 15588, Republic of Korea
| | - Manolis Pasparakis
- Institute for Genetics, University of Cologne, 50674 Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931 Cologne, Germany; Center for Molecular Medicine (CMMC), University of Cologne, 50931 Cologne, Germany.
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22
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Du J, Wang Z. Regulation of RIPK1 Phosphorylation: Implications for Inflammation, Cell Death, and Therapeutic Interventions. Biomedicines 2024; 12:1525. [PMID: 39062098 PMCID: PMC11275223 DOI: 10.3390/biomedicines12071525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 07/04/2024] [Accepted: 07/06/2024] [Indexed: 07/28/2024] Open
Abstract
Receptor-interacting protein kinase 1 (RIPK1) plays a crucial role in controlling inflammation and cell death. Its function is tightly controlled through post-translational modifications, enabling its dynamic switch between promoting cell survival and triggering cell death. Phosphorylation of RIPK1 at various sites serves as a critical mechanism for regulating its activity, exerting either activating or inhibitory effects. Perturbations in RIPK1 phosphorylation status have profound implications for the development of severe inflammatory diseases in humans. This review explores the intricate regulation of RIPK1 phosphorylation and dephosphorylation and highlights the potential of targeting RIPK1 phosphorylation as a promising therapeutic strategy for mitigating human diseases.
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Affiliation(s)
- Jingchun Du
- Department of Clinical Immunology, Kingmed School of Laboratory Medicine, Guangzhou Medical University, Guangzhou 510182, China
| | - Zhigao Wang
- Center for Regenerative Medicine, Heart Institute, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, 560 Channelside Drive, Tampa, FL 33602, USA
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23
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Tweedell RE, Hibler T, Kanneganti TD. Defining PANoptosis: Biochemical and Mechanistic Evaluation of Innate Immune Cell Death Activation. Curr Protoc 2024; 4:e1112. [PMID: 39073015 DOI: 10.1002/cpz1.1112] [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] [Indexed: 07/30/2024]
Abstract
The innate immune system is the first line of host defense. Innate immune activation utilizes pattern recognition receptors to detect pathogens, pathogen-associated and damage-associated molecular patterns (PAMPs and DAMPs), and homeostatic alterations and drives inflammatory signaling pathways and regulated cell death. Cell death activation is critical to eliminate pathogens and aberrant or damaged cells, while excess activation can be linked to inflammation, tissue damage, and disease. Therefore, there is increasing interest in studying cell death mechanisms to understand the underlying biology and identify therapeutic strategies. However, there are significant technical challenges, as many cell death pathways share key molecules with each other, and genetic models where these cell death molecules are deleted remain the gold standard for evaluation. Furthermore, extensive crosstalk has been identified between the cell death pathways pyroptosis, apoptosis, necroptosis, and the more recently characterized PANoptosis, which is defined as a prominent, unique innate immune, lytic, and inflammatory cell death pathway initiated by innate immune sensors and driven by caspases and RIPKs through PANoptosomes. PANoptosomes are multi-protein complexes assembled by innate immune sensor(s) in response to pathogens, PAMPs, DAMPs, cytokines, and homeostatic changes that drive PANoptosis. In this article, we provide methods for molecularly defining distinct cell death pathways, including PANoptosis, using both genetic and chemical approaches through western blot, LDH assay, and microscopy readouts. This procedure allows for the assessment of cell death on the cell population and single-cell levels even without access to genetic models. Having this comprehensive workflow that is more accessible to all labs will improve our ability as a scientific community to accelerate discovery. Using these protocols will help identify new innate immune sensors that drive PANoptosis and define the molecular mechanisms and regulators involved to establish new targets for clinical translation. © 2024 The Author(s). Current Protocols published by Wiley Periodicals LLC. Basic Protocol 1: Induction and quantification of cell death using live cell imaging Alternate Protocol 1: Quantification of cell death using LDH Alternate Protocol 2: Assessment of cell death complexes in single cells using immunofluorescence staining Basic Protocol 2: Analysis of cell death mechanisms by immunoblots (western blots).
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Affiliation(s)
- Rebecca E Tweedell
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Taylor Hibler
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee
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24
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Sun Y, Li F, Liu Y, Qiao D, Yao X, Liu GS, Li D, Xiao C, Wang T, Chi W. Targeting inflammasomes and pyroptosis in retinal diseases-molecular mechanisms and future perspectives. Prog Retin Eye Res 2024; 101:101263. [PMID: 38657834 DOI: 10.1016/j.preteyeres.2024.101263] [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: 07/30/2023] [Revised: 04/15/2024] [Accepted: 04/16/2024] [Indexed: 04/26/2024]
Abstract
Retinal diseases encompass various conditions associated with sight-threatening immune responses and are leading causes of blindness worldwide. These diseases include age-related macular degeneration, diabetic retinopathy, glaucoma and uveitis. Emerging evidence underscores the vital role of the innate immune response in retinal diseases, beyond the previously emphasized T-cell-driven processes of the adaptive immune system. In particular, pyroptosis, a newly discovered programmed cell death process involving inflammasome formation, has been implicated in the loss of membrane integrity and the release of inflammatory cytokines. Several disease-relevant animal models have provided evidence that the formation of inflammasomes and the induction of pyroptosis in innate immune cells contribute to inflammation in various retinal diseases. In this review article, we summarize current knowledge about the innate immune system and pyroptosis in retinal diseases. We also provide insights into translational targeting approaches, including novel drugs countering pyroptosis, to improve the diagnosis and treatment of retinal diseases.
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Affiliation(s)
- Yimeng Sun
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China
| | - Fan Li
- Eye Center, Zhongshan City People's Hospital, Zhongshan, 528403, China
| | - Yunfei Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China
| | - Dijie Qiao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China
| | - Xinyu Yao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China
| | - Guei-Sheung Liu
- Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, VIC, 3002, Australia; Ophthalmology, Department of Surgery, University of Melbourne, East Melbourne, VIC, 3002, Australia
| | - Dequan Li
- Department of Ophthalmology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Chuanle Xiao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China
| | - Tao Wang
- Institute of Infectious Diseases, Shenzhen Bay Laboratory, Guangming District, Shenzhen, 518132, China; School of Basic Medical Sciences, Capital Medical University, 10 Xitoutiao You'anMen Street, Beijing, 100069, China
| | - Wei Chi
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China.
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25
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Ergün S, Aslan S, Demir D, Kayaoğlu S, Saydam M, Keleş Y, Kolcuoğlu D, Taşkurt Hekim N, Güneş S. Beyond Death: Unmasking the Intricacies of Apoptosis Escape. Mol Diagn Ther 2024; 28:403-423. [PMID: 38890247 PMCID: PMC11211167 DOI: 10.1007/s40291-024-00718-w] [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] [Accepted: 05/14/2024] [Indexed: 06/20/2024]
Abstract
Apoptosis, or programmed cell death, maintains tissue homeostasis by eliminating damaged or unnecessary cells. However, cells can evade this process, contributing to conditions such as cancer. Escape mechanisms include anoikis, mitochondrial DNA depletion, cellular FLICE inhibitory protein (c-FLIP), endosomal sorting complexes required for transport (ESCRT), mitotic slippage, anastasis, and blebbishield formation. Anoikis, triggered by cell detachment from the extracellular matrix, is pivotal in cancer research due to its role in cellular survival and metastasis. Mitochondrial DNA depletion, associated with cellular dysfunction and diseases such as breast and prostate cancer, links to apoptosis resistance. The c-FLIP protein family, notably CFLAR, regulates cell death processes as a truncated caspase-8 form. The ESCRT complex aids apoptosis evasion by repairing intracellular damage through increased Ca2+ levels. Antimitotic agents induce mitotic arrest in cancer treatment but can lead to mitotic slippage and tetraploid cell formation. Anastasis allows cells to resist apoptosis induced by various triggers. Blebbishield formation suppresses apoptosis indirectly in cancer stem cells by transforming apoptotic cells into blebbishields. In conclusion, the future of apoptosis research offers exciting possibilities for innovative therapeutic approaches, enhanced diagnostic tools, and a deeper understanding of the complex biological processes that govern cell fate. Collaborative efforts across disciplines, including molecular biology, genetics, immunology, and bioinformatics, will be essential to realize these prospects and improve patient outcomes in diverse disease contexts.
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Affiliation(s)
- Sercan Ergün
- Department of Medical Biology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey.
- Department of Multidisciplinary Molecular Medicine, Institute of Graduate Studies, Ondokuz Mayis University, Samsun, Turkey.
| | - Senanur Aslan
- Department of Multidisciplinary Molecular Medicine, Institute of Graduate Studies, Ondokuz Mayis University, Samsun, Turkey
| | - Dilbeste Demir
- Department of Medical Biology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
| | - Sümeyye Kayaoğlu
- Department of Medical Biology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
| | - Mevsim Saydam
- Department of Medical Biology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
| | - Yeda Keleş
- Department of Medical Biology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
| | - Damla Kolcuoğlu
- Department of Medical Biology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
| | - Neslihan Taşkurt Hekim
- Department of Medical Biology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
- Department of Multidisciplinary Molecular Medicine, Institute of Graduate Studies, Ondokuz Mayis University, Samsun, Turkey
| | - Sezgin Güneş
- Department of Medical Biology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
- Department of Multidisciplinary Molecular Medicine, Institute of Graduate Studies, Ondokuz Mayis University, Samsun, Turkey
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26
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Rodriguez DA, Tummers B, Shaw JJP, Quarato G, Weinlich R, Cripps J, Fitzgerald P, Janke LJ, Pelletier S, Crawford JC, Green DR. The interaction between RIPK1 and FADD controls perinatal lethality and inflammation. Cell Rep 2024; 43:114335. [PMID: 38850531 PMCID: PMC11256114 DOI: 10.1016/j.celrep.2024.114335] [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: 07/06/2023] [Revised: 04/15/2024] [Accepted: 05/23/2024] [Indexed: 06/10/2024] Open
Abstract
Perturbation of the apoptosis and necroptosis pathways critically influences embryogenesis. Receptor-associated protein kinase-1 (RIPK1) interacts with Fas-associated via death domain (FADD)-caspase-8-cellular Flice-like inhibitory protein long (cFLIPL) to regulate both extrinsic apoptosis and necroptosis. Here, we describe Ripk1-mutant animals (Ripk1R588E [RE]) in which the interaction between FADD and RIPK1 is disrupted, leading to embryonic lethality. This lethality is not prevented by further removal of the kinase activity of Ripk1 (Ripk1R588E K45A [REKA]). Both Ripk1RE and Ripk1REKA animals survive to adulthood upon ablation of Ripk3. While embryonic lethality of Ripk1RE mice is prevented by ablation of the necroptosis effector mixed lineage kinase-like (MLKL), animals succumb to inflammation after birth. In contrast, Mlkl ablation does not prevent the death of Ripk1REKA embryos, but animals reach adulthood when both MLKL and caspase-8 are removed. Ablation of the nucleic acid sensor Zbp1 largely prevents lethality in both Ripk1RE and Ripk1REKA embryos. Thus, the RIPK1-FADD interaction prevents Z-DNA binding protein-1 (ZBP1)-induced, RIPK3-caspase-8-mediated embryonic lethality, affected by the kinase activity of RIPK1.
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Affiliation(s)
- Diego A Rodriguez
- Department of Immunology, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA
| | - Bart Tummers
- Centre for Inflammation Biology & Cancer Immunology (CIBCI), Department of Inflammation Biology, School of Immunology & Microbial Sciences, King's College London, London SE1 1UL, UK.
| | - Jeremy J P Shaw
- Department of Immunology, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA
| | - Giovanni Quarato
- Department of Immunology, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA; Treeline Biosciences, San Diego, CA 92121, USA
| | | | - James Cripps
- Center for Cancer Immunology and Immunotherapy, Brown Cancer Center, University of Louisville School of Medicine, Louisville, KY, USA
| | - Patrick Fitzgerald
- Department of Immunology, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA
| | - Laura J Janke
- Department of Pathology, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA
| | - Stephane Pelletier
- Department of Medical and Molecular Genetics, Indiana University Genome Editing Center, Indiana University School of Medicine, Indiana University, Indianapolis, IA 46902, USA
| | - Jeremy Chase Crawford
- Department of Immunology, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA
| | - Douglas R Green
- Department of Immunology, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA.
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Guo Y, Verma B, Shrestha M, Marshak-Rothstein A, Gregory-Ksander M. Caspase-8-mediated inflammation but not apoptosis drives death of retinal ganglion cells and loss of visual function in glaucomaa. RESEARCH SQUARE 2024:rs.3.rs-4409426. [PMID: 38947028 PMCID: PMC11213175 DOI: 10.21203/rs.3.rs-4409426/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
Background- Glaucoma is a complex multifactorial disease where apoptosis and inflammation represent two key pathogenic mechanisms. However, the relative contribution of apoptosis versus inflammation in axon degeneration and death of retinal ganglion cells (RGCs) is not well understood. In glaucoma, caspase-8 is linked to RGC apoptosis, as well as glial activation and neuroinflammation. To uncouple these two pathways and determine the extent to which caspase-8-mediated inflammation and/or apoptosis contributes to the death of RGCs, we used the caspase-8 D387A mutant mouse (Casp8 DA/DA ) in which a point mutation in the auto-cleavage site blocks caspase-8-mediated apoptosis but does not block caspase-8-mediated inflammation. Methods- Intracameral injection of magnetic microbeads was used to elevate the intraocular pressure (IOP) in wild-type, Fas deficient Faslpr, and Casp8 DA/DA mice. IOP was monitored by rebound tonometry. Two weeks post microbead injection, retinas were collected for microglia activation analysis. Five weeks post microbead injection, visual acuity and RGC function were assessed by optometer reflex (OMR) and pattern electroretinogram (pERG), respectively. Retina and optic nerves were processed for RGC and axon quantification. Two- and five-weeks post microbead injection, expression of the necrosis marker, RIPK3, was assessed by qPCR. Results- Wild-type, Faslpr, and Casp8 DA/DA mice showed similar IOP elevation as compared to saline controls. A significant reduction in both visual acuity and pERG that correlated with a significant loss of RGCs and axons was observed in wild-type but not in Faslpr mice. The Casp8 DA/DA mice displayed a significant reduction in visual acuity and pERG amplitude and loss of RGCs and axons similar to that in wild-type mice. Immunostaining revealed equal numbers of activated microglia, double positive for P2ry12 and IB4, in the retinas from microbead-injected wild-type and Casp8 DA/DA mutant mice. qPCR analysis revealed no induction of RIPK3 in wild-type or Casp8 DA/DA mice at two- or five-weeks post microbead injection. Conclusions- Our results demonstrate that caspase-8-mediated extrinsic apoptosis is not involved in the death of RGCs in the microbead-induced mouse model of glaucoma implicating caspase-8-mediated inflammation, but not apoptosis, as the driving force in glaucoma progression. Taken together, these results identify the caspase-8-mediated inflammatory pathway as a potential target for neuroprotection in glaucoma.
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Affiliation(s)
- Yinjie Guo
- Xiangya Hospital Central South University
| | - Bhupender Verma
- Schepens Eye Research Institute of Massachusetts Eye and Ear
| | - Maleeka Shrestha
- Harvard University HSPH: Harvard University T H Chan School of Public Health
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Gao L, Shay C, Teng Y. Cell death shapes cancer immunity: spotlighting PANoptosis. J Exp Clin Cancer Res 2024; 43:168. [PMID: 38877579 PMCID: PMC11179218 DOI: 10.1186/s13046-024-03089-6] [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: 03/26/2024] [Accepted: 06/05/2024] [Indexed: 06/16/2024] Open
Abstract
PANoptosis represents a novel type of programmed cell death (PCD) with distinctive features that incorporate elements of pyroptosis, apoptosis, and necroptosis. PANoptosis is governed by a newly discovered cytoplasmic multimeric protein complex known as the PANoptosome. Unlike each of these PCD types individually, PANoptosis is still in the early stages of research and warrants further exploration of its specific regulatory mechanisms and primary targets. In this review, we provide a brief overview of the conceptual framework and molecular components of PANoptosis. In addition, we highlight recent advances in the understanding of the molecular mechanisms and therapeutic applications of PANoptosis. By elucidating the complex crosstalk between pyroptosis, apoptosis and necroptosis and summarizing the functional consequences of PANoptosis with a special focus on the tumor immune microenvironment, this review aims to provide a theoretical basis for the potential application of PANoptosis in cancer therapy.
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Affiliation(s)
- Lixia Gao
- National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, College of Pharmacy, Chongqing University of Arts and Sciences, Chongqing, 402160, People's Republic of China
| | - Chloe Shay
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, 30322, USA
| | - Yong Teng
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, 30322, USA.
- Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University School of Medicine, 201 Dowman Dr, Atlanta, GA, 30322, USA.
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Yang X, Zeng Q, İnam MG, İnam O, Lin CS, Tezel G. cFLIP in the molecular regulation of astroglia-driven neuroinflammation in experimental glaucoma. J Neuroinflammation 2024; 21:145. [PMID: 38824526 PMCID: PMC11143607 DOI: 10.1186/s12974-024-03141-4] [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: 04/05/2024] [Accepted: 05/24/2024] [Indexed: 06/03/2024] Open
Abstract
BACKGROUND Recent experimental studies of neuroinflammation in glaucoma pointed to cFLIP as a molecular switch for cell fate decisions, mainly regulating cell type-specific caspase-8 functions in cell death and inflammation. This study aimed to determine the importance of cFLIP for regulating astroglia-driven neuroinflammation in experimental glaucoma by analyzing the outcomes of astroglia-targeted transgenic deletion of cFLIP or cFLIPL. METHODS Glaucoma was modeled by anterior chamber microbead injections to induce ocular hypertension in mouse lines with or without conditional deletion of cFLIP or cFLIPL in astroglia. Morphological analysis of astroglia responses assessed quantitative parameters in retinal whole mounts immunolabeled for GFAP and inflammatory molecules or assayed for TUNEL. The molecular analysis included 36-plexed immunoassays of the retina and optic nerve cytokines and chemokines, NanoString-based profiling of inflammation-related gene expression, and Western blot analysis of selected proteins in freshly isolated samples of astroglia. RESULTS Immunoassays and immunolabeling of retina and optic nerve tissues presented reduced production of various proinflammatory cytokines, including TNFα, in GFAP/cFLIP and GFAP/cFLIPL relative to controls at 12 weeks of ocular hypertension with no detectable alteration in TUNEL. Besides presenting a similar trend of the proinflammatory versus anti-inflammatory molecules displayed by immunoassays, NanoString-based molecular profiling detected downregulated NF-κB/RelA and upregulated RelB expression of astroglia in ocular hypertensive samples of GFAP/cFLIP compared to ocular hypertensive controls. Analysis of protein expression also revealed decreased phospho-RelA and increased phospho-RelB in parallel with an increase in caspase-8 cleavage products. CONCLUSIONS A prominent response limiting neuroinflammation in ocular hypertensive eyes with cFLIP-deletion in astroglia values the role of cFLIP in the molecular regulation of glia-driven neuroinflammation during glaucomatous neurodegeneration. The molecular responses accompanying the lessening of neurodegenerative inflammation also seem to maintain astroglia survival despite increased caspase-8 cleavage with cFLIP deletion. A transcriptional autoregulatory response, dampening RelA but boosting RelB for selective expression of NF-κB target genes, might reinforce cell survival in cFLIP-deleted astroglia.
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Affiliation(s)
- Xiangjun Yang
- Department of Ophthalmology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, 10032, USA
| | - Qun Zeng
- Department of Ophthalmology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, 10032, USA
| | - Maide Gözde İnam
- Department of Ophthalmology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, 10032, USA
| | - Onur İnam
- Department of Ophthalmology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, 10032, USA
| | - Chyuan-Sheng Lin
- Department of Pathology & Cell Biology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, USA
| | - Gülgün Tezel
- Department of Ophthalmology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, 10032, USA.
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Dong J, Liu W, Liu W, Wen Y, Liu Q, Wang H, Xiang G, Liu Y, Hao H. Acute lung injury: a view from the perspective of necroptosis. Inflamm Res 2024; 73:997-1018. [PMID: 38615296 DOI: 10.1007/s00011-024-01879-4] [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: 02/04/2024] [Revised: 03/23/2024] [Accepted: 03/31/2024] [Indexed: 04/15/2024] Open
Abstract
BACKGROUND ALI/ARDS is a syndrome of acute onset characterized by progressive hypoxemia and noncardiogenic pulmonary edema as the primary clinical manifestations. Necroptosis is a form of programmed cell necrosis that is precisely regulated by molecular signals. This process is characterized by organelle swelling and membrane rupture, is highly immunogenic, involves extensive crosstalk with various cellular stress mechanisms, and is significantly implicated in the onset and progression of ALI/ARDS. METHODS The current body of literature on necroptosis and ALI/ARDS was thoroughly reviewed. Initially, an overview of the molecular mechanism of necroptosis was provided, followed by an examination of its interactions with apoptosis, pyroptosis, autophagy, ferroptosis, PANOptosis, and NETosis. Subsequently, the involvement of necroptosis in various stages of ALI/ARDS progression was delineated. Lastly, drugs targeting necroptosis, biomarkers, and current obstacles were presented. CONCLUSION Necroptosis plays an important role in the progression of ALI/ARDS. However, since ALI/ARDS is a clinical syndrome caused by a variety of mechanisms, we emphasize that while focusing on necroptosis, it may be more beneficial to treat ALI/ARDS by collaborating with other mechanisms.
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Affiliation(s)
- Jinyan Dong
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, 250000, Shandong, China
| | - Weihong Liu
- Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, 250000, Shandong, China
| | - Wenli Liu
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, 250000, Shandong, China
| | - Yuqi Wen
- Second Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, 250000, Shandong, China
| | - Qingkuo Liu
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, 250000, Shandong, China
| | - Hongtao Wang
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, 250000, Shandong, China
| | - Guohan Xiang
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, 250000, Shandong, China
| | - Yang Liu
- Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, 250000, Shandong, China.
| | - Hao Hao
- Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, 250000, Shandong, China.
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Chandra P, Patra U, Mukhopadhyay U, Mukherjee A, Halder P, Koley H, Chawla-Sarkar M. Rotavirus non-structural protein 4 usurps host cellular RIPK1-RIPK3 complex to induce MLKL-dependent necroptotic cell death. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2024; 1871:119745. [PMID: 38719029 DOI: 10.1016/j.bbamcr.2024.119745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 04/11/2024] [Accepted: 04/16/2024] [Indexed: 05/14/2024]
Abstract
The dynamic interface between invading viral pathogens and programmed cell death (PCD) of the host is a finely regulated process. Host cellular demise at the end of the viral life cycle ensures the release of progeny virions to initiate new infection cycles. Rotavirus (RV), a diarrheagenic virus with double-stranded RNA genome, has been reported to trigger different types of PCD such as apoptosis and pyroptosis in a highly regulated way to successfully disseminate progeny virions. Recently our lab also showed that induction of MLKL-driven programmed necroptosis by RV. However, the host cellular machinery involved in RV-induced necroptosis and the upstream viral trigger responsible for it remained unaddressed. In the present study, the signalling upstream of MLKL-driven necroptosis has been delineated where the involvement of Receptor interacting serine/threonine kinase 3 (RIPK3) and 1 (RIPK1) from the host side and RV non-structural protein 4 (NSP4) as the viral trigger for necroptosis has been shown. Interestingly, RV-NSP4 was found to be an integral component of the necrosome complex by interacting with RIPK1, thereby bypassing the requirement of RIPK1 kinase activity. Subsequently, NSP4-driven elevated cytosolic Ca2+ concentration and Ca2+-binding to NSP4 lead further to RHIM domain-dependent RIPK1-RIPK3 interaction, RIPK3-dependent MLKL phosphorylation, and eventual necroptosis. Overall, this study presents the interplay between RV-NSP4 and the host cellular necrosome complex to induce necroptotic death of host cells.
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Affiliation(s)
- Pritam Chandra
- Division of Virology, ICMR-National Institute of Cholera and Enteric Diseases, Kolkata, West Bengal, India
| | - Upayan Patra
- Institute of Biochemistry II, Faculty of Medicine, Goethe University, Frankfurt, Germany
| | - Urbi Mukhopadhyay
- European Molecular Biology Laboratory, 71 Av. Des Martyrs, 38000 Grenoble, France
| | - Arpita Mukherjee
- Division of Virology, ICMR-National Institute of Cholera and Enteric Diseases, Kolkata, West Bengal, India
| | - Prolay Halder
- Division of Bacteriology, ICMR-National Institute of Cholera and Enteric Diseases, Kolkata, West Bengal, India
| | - Hemanta Koley
- Division of Bacteriology, ICMR-National Institute of Cholera and Enteric Diseases, Kolkata, West Bengal, India
| | - Mamta Chawla-Sarkar
- Division of Virology, ICMR-National Institute of Cholera and Enteric Diseases, Kolkata, West Bengal, India.
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He P, Ai T, Qiao M, Yang ZH, Han J. Phosphorylation of caspase-8 by RSKs via organ-constrained effects controls the sensitivity to TNF-induced death. Cell Death Discov 2024; 10:255. [PMID: 38789425 PMCID: PMC11126741 DOI: 10.1038/s41420-024-02024-0] [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: 02/07/2024] [Revised: 05/08/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024] Open
Abstract
Caspase-8 (Casp8) serves as an initiator of apoptosis or a suppressor of necroptosis in context-dependent manner. Members of the p90 RSK family can phosphorylate caspase-8 at threonine-265 (T265), which can inactivate caspase-8 for bypassing caspase-8-mediated blockade of necroptosis and can also decrease caspase-8 level by promoting its degradation. Mutating T265 in caspase-8 to alanine (A) in mice blocked TNF-induced necroptotic cecum damage but resulted in unexpectedly massive injury in the small intestine. Here, we show RSK1, RSK2, and RSK3 redundantly function in caspase-8 phosphorylation, and the duodenum is the most severely affected part of the small intestine when T265 phosphorylation of caspase-8 was prevented. Eliminating caspase-8 phosphorylation resulted in a duodenum-specific increase in basal caspase-8 protein level, which shall be responsible for the increased sensitivity to TNF-induced damage. Apoptosis of intestinal epithelial cells (IECs) was predominant in the duodenum of TNF-treated Rsk1-/-Rsk2-/-Rsk3-/- and Casp8T265A/T265A mice, though necroptosis was also observed. The heightened duodenal injury amplified systemic inflammatory responses, as evidenced by the contribution of hematopoietic cells to the sensitization of TNF-induced animal death. Further analysis revealed that hematopoietic and non-hematopoietic cells contributed differentially to cytokine production in response to the increased cell death. Collectively, RSKs emerges as a previously overlooked regulator that, via tissue/organ-constrained inactivating caspase-8 and/or downregulating caspase-8 protein level, controls the sensitivity to TNF-induced organ injury and animal death.
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Affiliation(s)
- Peng He
- Research Unit of Cellular Stress of CAMS, Xiang'an Hospital of Xiamen University, Cancer Research Center of Xiamen University, School of Medicine, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, 361102, China
| | - Tingting Ai
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, 361102, China
| | - Muzhen Qiao
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, 361102, China
| | - Zhang-Hua Yang
- Research Unit of Cellular Stress of CAMS, Xiang'an Hospital of Xiamen University, Cancer Research Center of Xiamen University, School of Medicine, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, 361102, China.
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, 310012, China.
| | - Jiahuai Han
- Research Unit of Cellular Stress of CAMS, Xiang'an Hospital of Xiamen University, Cancer Research Center of Xiamen University, School of Medicine, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, 361102, China.
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, 361102, China.
- Laboratory Animal Center, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, 361102, China.
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Li Y, Rasheed M, Liu J, Chen Z, Deng Y. Deciphering the Molecular Nexus: An In-Depth Review of Mitochondrial Pathways and Their Role in Cell Death Crosstalk. Cells 2024; 13:863. [PMID: 38786088 PMCID: PMC11119937 DOI: 10.3390/cells13100863] [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: 04/28/2024] [Revised: 05/13/2024] [Accepted: 05/16/2024] [Indexed: 05/25/2024] Open
Abstract
Cellular demise is a pivotal event in both developmental processes and disease states, with mitochondrial regulation playing an essential role. Traditionally, cell death was categorized into distinct types, considered to be linear and mutually exclusive pathways. However, the current understanding has evolved to recognize the complex and interconnected mechanisms of cell death, especially within apoptosis, pyroptosis, and necroptosis. Apoptosis, pyroptosis, and necroptosis are governed by intricate molecular pathways, with mitochondria acting as central decision-makers in steering cells towards either apoptosis or pyroptosis through various mediators. The choice between apoptosis and necroptosis is often determined by mitochondrial signaling and is orchestrated by specific proteins. The molecular dialogue and the regulatory influence of mitochondria within these cell death pathways are critical research areas. Comprehending the shared elements and the interplay between these death modalities is crucial for unraveling the complexities of cellular demise.
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Affiliation(s)
| | | | | | - Zixuan Chen
- Beijing Laboratory for Separation and Analysis in Biomedicine and Pharmaceuticals, School of Medical Technology, Beijing Institute of Technology, Beijing 100081, China; (Y.L.); (M.R.); (J.L.)
| | - Yulin Deng
- Beijing Laboratory for Separation and Analysis in Biomedicine and Pharmaceuticals, School of Medical Technology, Beijing Institute of Technology, Beijing 100081, China; (Y.L.); (M.R.); (J.L.)
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Gitlin AD, Maltzman A, Kanno Y, Heger K, Reja R, Schubert AF, Wierciszewski LJ, Pantua H, Kapadia SB, Harris SF, Webster JD, Newton K, Dixit VM. N4BP1 coordinates ubiquitin-dependent crosstalk within the IκB kinase family to limit Toll-like receptor signaling and inflammation. Immunity 2024; 57:973-986.e7. [PMID: 38697117 PMCID: PMC11096006 DOI: 10.1016/j.immuni.2024.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 12/15/2023] [Accepted: 04/08/2024] [Indexed: 05/04/2024]
Abstract
The ubiquitin-binding endoribonuclease N4BP1 potently suppresses cytokine production by Toll-like receptors (TLRs) that signal through the adaptor MyD88 but is inactivated via caspase-8-mediated cleavage downstream of death receptors, TLR3, or TLR4. Here, we examined the mechanism whereby N4BP1 limits inflammatory responses. In macrophages, deletion of N4BP1 prolonged activation of inflammatory gene transcription at late time points after TRIF-independent TLR activation. Optimal suppression of inflammatory cytokines by N4BP1 depended on its ability to bind polyubiquitin chains, as macrophages and mice-bearing inactivating mutations in a ubiquitin-binding motif in N4BP1 displayed increased TLR-induced cytokine production. Deletion of the noncanonical IκB kinases (ncIKKs), Tbk1 and Ikke, or their adaptor Tank phenocopied N4bp1 deficiency and enhanced macrophage responses to TLR1/2, TLR7, or TLR9 stimulation. Mechanistically, N4BP1 acted in concert with the ncIKKs to limit the duration of canonical IκB kinase (IKKα/β) signaling. Thus, N4BP1 and the ncIKKs serve as an important checkpoint against over-exuberant innate immune responses.
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Affiliation(s)
- Alexander D Gitlin
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Immunology and Microbial Pathogenesis Program, Weill Cornell Graduate School of Medical Sciences, New York, NY 10065, USA.
| | - Allie Maltzman
- Physiological Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Yuzuka Kanno
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Klaus Heger
- Cancer Immunology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Rohit Reja
- Oncology Bioinformatics, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Alexander F Schubert
- Structural Biology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Linsey J Wierciszewski
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Homer Pantua
- Infectious Diseases, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Sharookh B Kapadia
- Infectious Diseases, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Seth F Harris
- Structural Biology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Joshua D Webster
- Pathology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Kim Newton
- Physiological Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA.
| | - Vishva M Dixit
- Physiological Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA.
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Bibo-Verdugo B, Salvesen G. Evolution of Caspases and the Invention of Pyroptosis. Int J Mol Sci 2024; 25:5270. [PMID: 38791309 PMCID: PMC11121540 DOI: 10.3390/ijms25105270] [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: 04/16/2024] [Revised: 05/08/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024] Open
Abstract
The protein scaffold that includes the caspases is ancient and found in all domains of life. However, the stringent specificity that defines the caspase biologic function is relatively recent and found only in multicellular animals. During the radiation of the Chordata, members of the caspase family adopted roles in immunity, events coinciding with the development of substrates that define the modern innate immune response. This review focuses on the switch from the non-inflammatory cellular demise of apoptosis to the highly inflammatory innate response driven by distinct members of the caspase family, and the interplay between these two regulated cell death pathways.
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Affiliation(s)
- Betsaida Bibo-Verdugo
- Instituto Tecnológico de La Paz, Boulevard Forjadores de Baja California Sur 4720, La Paz 23080, Mexico;
| | - Guy Salvesen
- Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
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Yang CY, Lien CI, Tseng YC, Tu YF, Kulczyk AW, Lu YC, Wang YT, Su TW, Hsu LC, Lo YC, Lin SC. Deciphering DED assembly mechanisms in FADD-procaspase-8-cFLIP complexes regulating apoptosis. Nat Commun 2024; 15:3791. [PMID: 38710704 PMCID: PMC11074299 DOI: 10.1038/s41467-024-47990-2] [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: 02/04/2024] [Accepted: 04/17/2024] [Indexed: 05/08/2024] Open
Abstract
Fas-associated protein with death domain (FADD), procaspase-8, and cellular FLICE-inhibitory proteins (cFLIP) assemble through death-effector domains (DEDs), directing death receptor signaling towards cell survival or apoptosis. Understanding their three-dimensional regulatory mechanism has been limited by the absence of atomic coordinates for their ternary DED complex. By employing X-ray crystallography and cryogenic electron microscopy (cryo-EM), we present the atomic coordinates of human FADD-procaspase-8-cFLIP complexes, revealing structural insights into these critical interactions. These structures illustrate how FADD and cFLIP orchestrate the assembly of caspase-8-containing complexes and offer mechanistic explanations for their role in promoting or inhibiting apoptotic and necroptotic signaling. A helical procaspase-8-cFLIP hetero-double layer in the complex appears to promote limited caspase-8 activation for cell survival. Our structure-guided mutagenesis supports the role of the triple-FADD complex in caspase-8 activation and in regulating receptor-interacting protein kinase 1 (RIPK1). These results propose a unified mechanism for DED assembly and procaspase-8 activation in the regulation of apoptotic and necroptotic signaling across various cellular pathways involved in development, innate immunity, and disease.
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Grants
- AS-TP-107-L16, AS-TP-107-L16-1, AS-102-TP-B14 and AS-102-TP-B14-2 Academia Sinica
- AS-TP-107-L16-2 and AS-102-TP-B14-1 Academia Sinica
- AS-TP-107-L16-3 Academia Sinica
- MoST 107-2320-B-001-018-, 108-2311-B-001-018-, 109-2311-B-001-016-, and 110-2311-B-001-015- Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan)
- MoST 107-2320-B-006-062-MY3, and 111-2311-B-006-005-MY3 Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan)
- MoST 108-2320-B-002-020-MY3, 111-2320-B-002-048-MY3, and 112-2326-B-002-007- Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan)
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Affiliation(s)
- Chao-Yu Yang
- Genomics Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Chia-I Lien
- Institute of Molecular Medicine, College of Medicine, National Taiwan University, Taipei, 10002, Taiwan
| | - Yi-Chun Tseng
- Genomics Research Center, Academia Sinica, Taipei, 11529, Taiwan
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Yi-Fan Tu
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Arkadiusz W Kulczyk
- Institute for Quantitative Biomedicine, Rutgers University, Department of Biochemistry and Microbiology, Rutgers University, Piscataway, NJ, 08854, USA
| | - Yen-Chen Lu
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Yin-Ting Wang
- Genomics Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Tsung-Wei Su
- Genomics Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Li-Chung Hsu
- Institute of Molecular Medicine, College of Medicine, National Taiwan University, Taipei, 10002, Taiwan.
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, 10002, Taiwan.
| | - Yu-Chih Lo
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, 70101, Taiwan.
| | - Su-Chang Lin
- Genomics Research Center, Academia Sinica, Taipei, 11529, Taiwan.
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37
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Cappe B, Vandenabeele P, Riquet FB. A guide to the expanding field of extracellular vesicles and their release in regulated cell death programs. FEBS J 2024; 291:2068-2090. [PMID: 37872002 DOI: 10.1111/febs.16981] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 09/26/2023] [Accepted: 10/17/2023] [Indexed: 10/25/2023]
Abstract
Homeostasis disruption is visible at the molecular and cellular levels and may often lead to cell death. This vital process allows us to maintain the more extensive system's integrity by keeping the different features (genetic, metabolic, physiologic, and individual) intact. Interestingly, while cells can die in different manners, dying cells still communicate with their environment. This communication was, for a long time, perceived as only driven by the release of soluble factors. However, it has now been reconsidered with the increasing interest in extracellular vesicles (EVs), which are discovered to be released during different regulated cell death programs, with the observation of specific effects. EVs are game changers in the paradigm of cell-cell communication with tremendous implications in fundamental research with regard to noncell autonomous functions, as well as in biomarkers research, all of which are geared toward diagnostic and therapeutic purposes. This review is composed of two main parts. The first is a comprehensive presentation of the state of the art of the EV field at large. In the second part, we focus on EVs discovered to be released during different regulated cell death programs, also known as cell death EVs (cdEVs), and EV-associated specific effects on recipient cells in the context of cell death and inflammation/inflammatory responses.
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Affiliation(s)
- Benjamin Cappe
- Molecular Signaling and Cell Death Unit, VIB-UGent Center for Inflammation Research (IRC), Belgium
- Department of Biomedical Molecular Biology, Ghent University, Belgium
| | - Peter Vandenabeele
- Molecular Signaling and Cell Death Unit, VIB-UGent Center for Inflammation Research (IRC), Belgium
- Department of Biomedical Molecular Biology, Ghent University, Belgium
| | - Franck B Riquet
- Molecular Signaling and Cell Death Unit, VIB-UGent Center for Inflammation Research (IRC), Belgium
- Department of Biomedical Molecular Biology, Ghent University, Belgium
- University of Lille, CNRS, UMR 8523 - PhLAM - Physique des Lasers Atomes et Molécules, France
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38
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Meier P, Legrand AJ, Adam D, Silke J. Immunogenic cell death in cancer: targeting necroptosis to induce antitumour immunity. Nat Rev Cancer 2024; 24:299-315. [PMID: 38454135 DOI: 10.1038/s41568-024-00674-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/26/2024] [Indexed: 03/09/2024]
Abstract
Most metastatic cancers remain incurable due to the emergence of apoptosis-resistant clones, fuelled by intratumour heterogeneity and tumour evolution. To improve treatment, therapies should not only kill cancer cells but also activate the immune system against the tumour to eliminate any residual cancer cells that survive treatment. While current cancer therapies rely heavily on apoptosis - a largely immunologically silent form of cell death - there is growing interest in harnessing immunogenic forms of cell death such as necroptosis. Unlike apoptosis, necroptosis generates second messengers that act on immune cells in the tumour microenvironment, alerting them of danger. This lytic form of cell death optimizes the provision of antigens and adjuvanticity for immune cells, potentially boosting anticancer treatment approaches by combining cellular suicide and immune response approaches. In this Review, we discuss the mechanisms of necroptosis and how it activates antigen-presenting cells, drives cross-priming of CD8+ T cells and induces antitumour immune responses. We also examine the opportunities and potential drawbacks of such strategies for exposing cancer cells to immunological attacks.
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Affiliation(s)
- Pascal Meier
- The Breast Cancer Now Toby Robins Research Centre, Institute of Cancer Research, London, UK.
| | - Arnaud J Legrand
- The Breast Cancer Now Toby Robins Research Centre, Institute of Cancer Research, London, UK
| | - Dieter Adam
- Institut für Immunologie, Christian-Albrechts-Universität zu Kiel, Kiel, Germany.
| | - John Silke
- Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia.
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39
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Qiao S, Kang Y, Tan X, Zhou X, Zhang C, Lai S, Liu J, Shao L. Nanomaterials-induced programmed cell death: Focus on mitochondria. Toxicology 2024; 504:153803. [PMID: 38616010 DOI: 10.1016/j.tox.2024.153803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 04/03/2024] [Accepted: 04/10/2024] [Indexed: 04/16/2024]
Abstract
Nanomaterials are widely utilized in several domains, such as everyday life, societal manufacturing, and biomedical applications, which expand the potential for nanomaterials to penetrate biological barriers and interact with cells. Multiple studies have concentrated on the particular or improper utilization of nanomaterials, resulting in cellular death. The primary mode of cell death caused by nanotoxicity is programmable cell death, which includes apoptosis, ferroptosis, necroptosis, and pyroptosis. Based on our prior publications and latest research, mitochondria have a vital function in facilitating programmed cell death caused by nanomaterials, as well as initiating or transmitting death signal pathways associated with it. Therefore, this review takes mitochondria as the focal point to investigate the internal molecular mechanism of nanomaterial-induced programmed cell death, with the aim of identifying potential targets for prevention and treatment in related studies.
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Affiliation(s)
- Shijia Qiao
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Yiyuan Kang
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Xiner Tan
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Xinru Zhou
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Can Zhang
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Shulin Lai
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Jia Liu
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China.
| | - Longquan Shao
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China.
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40
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Solon M, Ge N, Hambro S, Haller S, Jiang J, Baca M, Preston J, Maltzman A, Wickliffe KE, Liang Y, Reja R, Nickles D, Newton K, Webster JD. ZBP1 and TRIF trigger lethal necroptosis in mice lacking caspase-8 and TNFR1. Cell Death Differ 2024; 31:672-682. [PMID: 38548850 PMCID: PMC11093969 DOI: 10.1038/s41418-024-01286-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 03/13/2024] [Accepted: 03/20/2024] [Indexed: 05/16/2024] Open
Abstract
Necroptosis is a lytic form of cell death that is mediated by the kinase RIPK3 and the pseudokinase MLKL when caspase-8 is inhibited downstream of death receptors, toll-like receptor 3 (TLR3), TLR4, and the intracellular Z-form nucleic acid sensor ZBP1. Oligomerization and activation of RIPK3 is driven by interactions with the kinase RIPK1, the TLR adaptor TRIF, or ZBP1. In this study, we use immunohistochemistry (IHC) and in situ hybridization (ISH) assays to generate a tissue atlas characterizing RIPK1, RIPK3, Mlkl, and ZBP1 expression in mouse tissues. RIPK1, RIPK3, and Mlkl were co-expressed in most immune cell populations, endothelial cells, and many barrier epithelia. ZBP1 was expressed in many immune populations, but had more variable expression in epithelia compared to RIPK1, RIPK3, and Mlkl. Intriguingly, expression of ZBP1 was elevated in Casp8-/- Tnfr1-/- embryos prior to their succumbing to aberrant necroptosis around embryonic day 15 (E15). ZBP1 contributed to this embryonic lethality because rare Casp8-/- Tnfr1-/- Zbp1-/- mice survived until after birth. Necroptosis mediated by TRIF contributed to the demise of Casp8-/- Tnfr1-/- Zbp1-/- pups in the perinatal period. Of note, Casp8-/- Tnfr1-/- Trif-/- Zbp1-/- mice exhibited autoinflammation and morbidity, typically within 5-7 weeks of being born, which is not seen in Casp8-/- Ripk1-/- Trif-/- Zbp1-/-, Casp8-/- Ripk3-/-, or Casp8-/- Mlkl-/- mice. Therefore, after birth, loss of caspase-8 probably unleashes RIPK1-dependent necroptosis driven by death receptors other than TNFR1.
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Affiliation(s)
- Margaret Solon
- Department of Pathology, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Nianfeng Ge
- Department of Pathology, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Shannon Hambro
- Department of Pathology, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Susan Haller
- Department of Pathology, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Jian Jiang
- Department of Pathology, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Miriam Baca
- Department of Pathology, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Jessica Preston
- Department of Pathology, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Allie Maltzman
- Department of Physiological Chemistry, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Katherine E Wickliffe
- Department of Physiological Chemistry, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Yuxin Liang
- Department of Microchemistry, Proteomics, Lipidomics, and Next Generation Sequencing, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Rohit Reja
- Department of Physiological Chemistry, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
- Department of Oncology Bioinformatics, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Dorothee Nickles
- Department of Oncology Bioinformatics, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
- Department of Translational Oncology, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Kim Newton
- Department of Physiological Chemistry, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA.
| | - Joshua D Webster
- Department of Pathology, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA.
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41
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Abstract
Regulated cell death mediated by dedicated molecular machines, known as programmed cell death, plays important roles in health and disease. Apoptosis, necroptosis and pyroptosis are three such programmed cell death modalities. The caspase family of cysteine proteases serve as key regulators of programmed cell death. During apoptosis, a cascade of caspase activation mediates signal transduction and cellular destruction, whereas pyroptosis occurs when activated caspases cleave gasdermins, which can then form pores in the plasma membrane. Necroptosis, a form of caspase-independent programmed necrosis mediated by RIPK3 and MLKL, is inhibited by caspase-8-mediated cleavage of RIPK1. Disruption of cellular homeostatic mechanisms that are essential for cell survival, such as normal ionic and redox balance and lysosomal flux, can also induce cell death without invoking programmed cell death mechanisms. Excitotoxicity, ferroptosis and lysosomal cell death are examples of such cell death modes. In this Review, we provide an overview of the major cell death mechanisms, highlighting the latest insights into their complex regulation and execution, and their relevance to human diseases.
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Affiliation(s)
- Junying Yuan
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Shanghai, China.
- Shanghai Key Laboratory of Aging Studies, Shanghai, China.
| | - Dimitry Ofengeim
- Sanofi, Rare and Neurological Diseases Research, Cambridge, MA, USA.
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42
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Tran HT, Kratina T, Coutansais A, Michalek D, Hogan BM, Lawlor KE, Vince JE, Silke J, Lalaoui N. RIPK3 cleavage is dispensable for necroptosis inhibition but restricts NLRP3 inflammasome activation. Cell Death Differ 2024; 31:662-671. [PMID: 38514849 PMCID: PMC11094093 DOI: 10.1038/s41418-024-01281-x] [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: 09/08/2023] [Revised: 03/08/2024] [Accepted: 03/12/2024] [Indexed: 03/23/2024] Open
Abstract
Caspase-8 activity is required to inhibit necroptosis during embryogenesis in mice. In vitro studies have suggested that caspase-8 directly cleaves RIPK1, CYLD and the key necroptotic effector kinase RIPK3 to repress necroptosis. However, recent studies have shown that mice expressing uncleavable RIPK1 die during embryogenesis due to excessive apoptosis, while uncleavable CYLD mice are viable. Therefore, these results raise important questions about the role of RIPK3 cleavage. To evaluate the physiological significance of RIPK3 cleavage, we generated Ripk3D333A/D333A mice harbouring a point mutation in the conserved caspase-8 cleavage site. These mice are viable, demonstrating that RIPK3 cleavage is not essential for blocking necroptosis during development. Furthermore, unlike RIPK1 cleavage-resistant cells, Ripk3D333A/D333A cells were not significantly more sensitive to necroptotic stimuli. Instead, we found that the cleavage of RIPK3 by caspase-8 restricts NLRP3 inflammasome activation-dependent pyroptosis and IL-1β secretion when Inhibitors of APoptosis (IAP) are limited. These results demonstrate that caspase-8 does not inhibit necroptosis by directly cleaving RIPK3 and further underscore a role for RIPK3 in regulating the NLRP3 inflammasome.
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Affiliation(s)
- Hong Tri Tran
- Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC, Australia
| | - Tobias Kratina
- Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
| | | | - Dominika Michalek
- Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC, Australia
| | - Benjamin M Hogan
- Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC, Australia
- Department of Anatomy and Physiology, University of Melbourne, Parkville, VIC, Australia
| | - Kate E Lawlor
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia
- Department of Molecular and Translational Science, Monash University, Clayton, VIC, Australia
| | - James E Vince
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - John Silke
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Najoua Lalaoui
- Peter MacCallum Cancer Centre, Melbourne, VIC, Australia.
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC, Australia.
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.
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43
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Liu S, Joshi K, Zhang L, Li W, Mack R, Runde A, Hagen PA, Barton K, Breslin P, Ji HL, Kini AR, Wang Z, Zhang J. Caspase 8 deletion causes infection/inflammation-induced bone marrow failure and MDS-like disease in mice. Cell Death Dis 2024; 15:278. [PMID: 38637559 PMCID: PMC11026525 DOI: 10.1038/s41419-024-06660-3] [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: 10/20/2023] [Revised: 04/01/2024] [Accepted: 04/08/2024] [Indexed: 04/20/2024]
Abstract
Myelodysplastic syndromes (MDS) are a heterogeneous group of pre-leukemic hematopoietic disorders characterized by cytopenia in peripheral blood due to ineffective hematopoiesis and normo- or hypercellularity and morphologic dysplasia in bone marrow (BM). An inflammatory BM microenvironment and programmed cell death of hematopoietic stem/progenitor cells (HSPCs) are thought to be the major causes of ineffective hematopoiesis in MDS. Pyroptosis, apoptosis and necroptosis (collectively, PANoptosis) are observed in BM tissues of MDS patients, suggesting an important role of PANoptosis in MDS pathogenesis. Caspase 8 (Casp8) is a master regulator of PANoptosis, which is downregulated in HSPCs from most MDS patients and abnormally spliced in HSPCs from MDS patients with SRSF2 mutation. To study the role of PANoptosis in hematopoiesis, we generated inducible Casp8 knockout mice (Casp8-/-). Mx1-Cre-Casp8-/- mice died of BM failure within 10 days of polyI:C injections due to depletion of HSPCs. Rosa-ERT2Cre-Casp8-/- mice are healthy without significant changes in BM hematopoiesis within the first 1.5 months after Casp8 deletion. Such mice developed BM failure upon infection or low dose polyI:C/LPS injections due to the hypersensitivity of Casp8-/- HSPCs to infection or inflammation-induced necroptosis which can be prevented by Ripk3 deletion. However, impaired self-renewal capacity of Casp8-/- HSPCs cannot be rescued by Ripk3 deletion due to activation of Ripk1-Tbk1 signaling. Most importantly, mice transplanted with Casp8-/- BM cells developed MDS-like disease within 4 months of transplantation as demonstrated by anemia, thrombocytopenia and myelodysplasia. Our study suggests an essential role for a balance in Casp8, Ripk3-Mlkl and Ripk1-Tbk1 activities in the regulation of survival and self-renewal of HSPCs, the disruption of which induces inflammation and BM failure, resulting in MDS-like disease.
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Affiliation(s)
- Shanhui Liu
- Oncology Institute, Cardinal Bernardin Cancer Canter, Loyola University Chicago Medical Center, Maywood, IL, 60153, USA
- Department of Cancer Biology, Loyola University Chicago Medical Center, Maywood, IL, 60153, USA
- Lanzhou University Second Hospital, Key Laboratory of Urological Diseases in Gansu Province, Lanzhou, Gansu, 730030, China
| | - Kanak Joshi
- Oncology Institute, Cardinal Bernardin Cancer Canter, Loyola University Chicago Medical Center, Maywood, IL, 60153, USA
- Department of Cancer Biology, Loyola University Chicago Medical Center, Maywood, IL, 60153, USA
| | - Lei Zhang
- Oncology Institute, Cardinal Bernardin Cancer Canter, Loyola University Chicago Medical Center, Maywood, IL, 60153, USA
- Department of Cancer Biology, Loyola University Chicago Medical Center, Maywood, IL, 60153, USA
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, National Clinical Research Center for Hematologic Diseases, Soochow University, Suzhou, 215123, China
| | - Wenyan Li
- Lanzhou University Second Hospital, Key Laboratory of Urological Diseases in Gansu Province, Lanzhou, Gansu, 730030, China
| | - Ryan Mack
- Oncology Institute, Cardinal Bernardin Cancer Canter, Loyola University Chicago Medical Center, Maywood, IL, 60153, USA
- Department of Cancer Biology, Loyola University Chicago Medical Center, Maywood, IL, 60153, USA
| | - Austin Runde
- Oncology Institute, Cardinal Bernardin Cancer Canter, Loyola University Chicago Medical Center, Maywood, IL, 60153, USA
- Department of Cancer Biology, Loyola University Chicago Medical Center, Maywood, IL, 60153, USA
| | - Patrick A Hagen
- Oncology Institute, Cardinal Bernardin Cancer Canter, Loyola University Chicago Medical Center, Maywood, IL, 60153, USA
- Department of Medicine, Loyola University Chicago Medical Center, Maywood, IL, 60153, USA
| | - Kevin Barton
- Oncology Institute, Cardinal Bernardin Cancer Canter, Loyola University Chicago Medical Center, Maywood, IL, 60153, USA
- Department of Medicine, Loyola University Chicago Medical Center, Maywood, IL, 60153, USA
| | - Peter Breslin
- Oncology Institute, Cardinal Bernardin Cancer Canter, Loyola University Chicago Medical Center, Maywood, IL, 60153, USA
- Department of Cancer Biology, Loyola University Chicago Medical Center, Maywood, IL, 60153, USA
- Departments of Biology and Molecular/Cellular Physiology, Loyola University Chicago, Maywood, IL, 60153, USA
| | - Hong-Long Ji
- Department of Surgery, Loyola University Chicago Medical Center, Maywood, IL, 60153, USA
| | - Ameet R Kini
- Departments of Pathology and Radiation Oncology, Loyola University Chicago Medical Center, Maywood, IL, 60153, USA
| | - Zhiping Wang
- Lanzhou University Second Hospital, Key Laboratory of Urological Diseases in Gansu Province, Lanzhou, Gansu, 730030, China.
| | - Jiwang Zhang
- Oncology Institute, Cardinal Bernardin Cancer Canter, Loyola University Chicago Medical Center, Maywood, IL, 60153, USA.
- Department of Cancer Biology, Loyola University Chicago Medical Center, Maywood, IL, 60153, USA.
- Departments of Pathology and Radiation Oncology, Loyola University Chicago Medical Center, Maywood, IL, 60153, USA.
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44
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Li Z, Shang W, Mei T, Fu D, Xi F, Shao Y, Song X, Wang Z, Qi K, Tu J. Outer membrane vesicles of avian pathogenic Escherichia coli induce necroptosis and NF-κB activation in chicken macrophages via RIPK1 mediation. Res Vet Sci 2024; 170:105185. [PMID: 38422838 DOI: 10.1016/j.rvsc.2024.105185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 12/20/2023] [Accepted: 02/11/2024] [Indexed: 03/02/2024]
Abstract
Outer membrane vesicles (OMVs) are soluble mediators secreted by Gram-negative bacteria that are involved in communication. They can carry a variety of harmful molecules, which induce cytotoxic responses and inflammatory reactions in the absence of direct host cell-bacterium interactions. We previously reported the isolation of OMVs from avian pathogenic Escherichia coli (APEC) culture medium by ultracentrifugation, and characterized them as a substance capable of inducing the production of pro-inflammatory cytokines and causing tissue damage. However, the specific mechanisms by which APEC-secreted OMVs activate host cell death signaling and inflammation are poorly understood. Here, we show that OMVs are involved in the pathogenesis of APEC disease. In an APEC/chicken macrophage (HD11) coculture system, APEC significantly promoted HD11 cell death and inflammatory responses by secreting OMVs. Using western blotting analysis and specific pathway inhibitors, we demonstrated that the induction of HD11 death by APEC OMVs is associated with the activation of receptor interacting serine/threonine kinase 1 (RIPK1)-, receptor interacting serine/threonine kinase 3 (RIPK3)-, and mixed lineage kinase like pseudokinase (MLKL)-induced necroptosis. Notably, necroptosis inhibitor-1 (Nec-1), an RIPK1 inhibitor, reversed these effects. We also showed that APEC OMVs promote the activation of the NF-κB signaling pathway, leading to the phosphorylation of IκB-α and p65, the increased nuclear translocation of p65, and the significant upregulation of interleukin 1β (IL-1β) and IL-6 transcription. Importantly, APEC OMVs-induced IL-1β and IL-6 mRNA expression and the activation of the NF-κB signaling pathway were similarly significantly inhibited by a RIPK1-specific inhibitor. Based on these findings, we have established that RIPK1 plays a dual role in HD11 cells necroptosis and the proinflammatory cytokine (IL-1β and IL-6) expression induced by APEC OMVs. RIPK1 mediated the induction of necroptosis and the activation of the NF-κB in HD11 cells via APEC OMVs. The results of this study provide a basis for further investigation of the contribution of OMVs to the pathogenesis of APEC.
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Affiliation(s)
- Zhe Li
- Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; Anhui Province Engineering Laboratory for Animal Food Quality and Bio-safety, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Wenbin Shang
- Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; Anhui Province Engineering Laboratory for Animal Food Quality and Bio-safety, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Ting Mei
- Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; Anhui Province Engineering Laboratory for Animal Food Quality and Bio-safety, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Dandan Fu
- Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; Anhui Province Engineering Laboratory for Animal Food Quality and Bio-safety, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Feng Xi
- Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; Anhui Province Engineering Laboratory for Animal Food Quality and Bio-safety, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Ying Shao
- Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; Anhui Province Engineering Laboratory for Animal Food Quality and Bio-safety, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Xiangjun Song
- Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; Anhui Province Engineering Laboratory for Animal Food Quality and Bio-safety, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Zhenyu Wang
- Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; Anhui Province Engineering Laboratory for Animal Food Quality and Bio-safety, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Kezong Qi
- Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; Anhui Province Engineering Laboratory for Animal Food Quality and Bio-safety, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Jian Tu
- Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; Anhui Province Engineering Laboratory for Animal Food Quality and Bio-safety, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China.
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Yang Y, Zhang J, Lv M, Cui N, Shan B, Sun Q, Yan L, Zhang M, Zou C, Yuan J, Xu D. Defective prelamin A processing promotes unconventional necroptosis driven by nuclear RIPK1. Nat Cell Biol 2024; 26:567-580. [PMID: 38538837 DOI: 10.1038/s41556-024-01374-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 02/04/2024] [Indexed: 04/18/2024]
Abstract
Defects in the prelamin A processing enzyme caused by loss-of-function mutations in the ZMPSTE24 gene are responsible for a spectrum of progeroid disorders characterized by the accumulation of farnesylated prelamin A. Here we report that defective prelamin A processing triggers nuclear RIPK1-dependent signalling that leads to necroptosis and inflammation. We show that accumulated prelamin A recruits RIPK1 to the nucleus to facilitate its activation upon tumour necrosis factor stimulation in ZMPSTE24-deficient cells. Kinase-activated RIPK1 then promotes RIPK3-mediated MLKL activation in the nucleus, leading to nuclear envelope disruption and necroptosis. This signalling relies on prelamin A farnesylation, which anchors prelamin A to nuclear envelope to serve as a nucleation platform for necroptosis. Genetic inactivation of necroptosis ameliorates the progeroid phenotypes in Zmpste24-/- mice. Our findings identify an unconventional nuclear necroptosis pathway resulting from ZMPSTE24 deficiency with pathogenic consequences in progeroid disorder and suggest RIPK1 as a feasible target for prelamin A-associated progeroid disorders.
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Affiliation(s)
- Yuanxin Yang
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jian Zhang
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Mingming Lv
- Department of Oral and Maxillofacial-Head and Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Na Cui
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Bing Shan
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Qi Sun
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Lingjie Yan
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Mengmeng Zhang
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Chengyu Zou
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
- Department of Oral and Maxillofacial-Head and Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Junying Yuan
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
- Shanghai Key Laboratory of Aging Studies, Shanghai, China
| | - Daichao Xu
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China.
- Shanghai Key Laboratory of Aging Studies, Shanghai, China.
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China.
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46
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Shkarina K, Broz P. Selective induction of programmed cell death using synthetic biology tools. Semin Cell Dev Biol 2024; 156:74-92. [PMID: 37598045 DOI: 10.1016/j.semcdb.2023.07.012] [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: 05/05/2023] [Revised: 07/21/2023] [Accepted: 07/21/2023] [Indexed: 08/21/2023]
Abstract
Regulated cell death (RCD) controls the removal of dispensable, infected or malignant cells, and is thus essential for development, homeostasis and immunity of multicellular organisms. Over the last years different forms of RCD have been described (among them apoptosis, necroptosis, pyroptosis and ferroptosis), and the cellular signaling pathways that control their induction and execution have been characterized at the molecular level. It has also become apparent that different forms of RCD differ in their capacity to elicit inflammation or an immune response, and that RCD pathways show a remarkable plasticity. Biochemical and genetic studies revealed that inhibition of a given pathway often results in the activation of back-up cell death mechanisms, highlighting close interconnectivity based on shared signaling components and the assembly of multivalent signaling platforms that can initiate different forms of RCD. Due to this interconnectivity and the pleiotropic effects of 'classical' cell death inducers, it is challenging to study RCD pathways in isolation. This has led to the development of tools based on synthetic biology that allow the targeted induction of RCD using chemogenetic or optogenetic methods. Here we discuss recent advances in the development of such toolset, highlighting their advantages and limitations, and their application for the study of RCD in cells and animals.
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Affiliation(s)
- Kateryna Shkarina
- Institute of Innate Immunity, University Hospital Bonn, Germany; German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany.
| | - Petr Broz
- Department of Immunobiology, University of Lausanne, Switzerland.
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47
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Sun JY, Zhao J, Qiu Y, Fan TJ. Different concentrations of betaxolol switch cell fate between necroptosis, apoptosis, and senescence in human corneal stromal cells. Chem Biol Interact 2024; 391:110898. [PMID: 38325520 DOI: 10.1016/j.cbi.2024.110898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 01/18/2024] [Accepted: 02/04/2024] [Indexed: 02/09/2024]
Abstract
Betaxolol is commonly used to manage glaucoma in clinical practice. However, its long-term use may damage the cornea. Thus, the cytotoxicity and mechanisms of betaxolol in human corneal stromal cells (HCSCs) warrant further study. In this study, we used in vitro HCSCs and in vivo rabbit corneal models to investigate betaxolol cytotoxic effects and mechanism of action. At near-clinical concentrations (0.28% and 0.14%), betaxolol inhibited caspase-8 activity, activated receptor-interacting protein kinase (RIPK)1, RIPK3, and mixed-spectrum kinase-like domain (MLKL), and phosphorylated MLKL to induce necroptosis in HCSCs. Similarly, moderate concentrations of betaxolol (0.07%-0.0175%) activated caspase-8 to trigger the exogenous apoptotic pathway. Through the intrinsic apoptotic pathway, betaxolol upregulated the expression of Bcl-2 family apoptotic proteins Bax and Bad and downregulated that of anti-apoptotic proteins Bcl-2 and Bcl-xL. This subsequently disrupted the mitochondrial membrane potential and cytoplasmic transfer of cytochrome c and apoptosis-inducing factor, activated caspase-9, and induced apoptosis in HCSCs. Furthermore, continuous treatment with low betaxolol concentrations (0.00875%) for three generations of HCSCs prevented apoptosis by promoting the expression of Bcl-xL and suppressing that of Bax. However, its toxic effects initiated cellular senescence by increasing reactive oxygen species, leading to the disruption of energy metabolism and DNA damage. Finally, clinical concentrations of betaxolol had a pro-apoptotic effect on rabbit corneal stromal cells in vivo. These results suggest that betaxolol induces cytotoxicity in a concentration-dependent manner in HCSCs, and that caspase-8 and Bcl-2 family proteins may be critical switches in the conversion of different HCSC death mechanisms.
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Affiliation(s)
- Jing-Yu Sun
- Laboratory for Corneal Tissue Engineering, College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, Shandong Province, PR China
| | - Jun Zhao
- Laboratory for Corneal Tissue Engineering, College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, Shandong Province, PR China
| | - Yue Qiu
- Laboratory for Corneal Tissue Engineering, College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, Shandong Province, PR China
| | - Ting-Jun Fan
- Laboratory for Corneal Tissue Engineering, College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, Shandong Province, PR China.
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Han JH, Karki R, Malireddi RKS, Mall R, Sarkar R, Sharma BR, Klein J, Berns H, Pisharath H, Pruett-Miller SM, Bae SJ, Kanneganti TD. NINJ1 mediates inflammatory cell death, PANoptosis, and lethality during infection conditions and heat stress. Nat Commun 2024; 15:1739. [PMID: 38409108 PMCID: PMC10897308 DOI: 10.1038/s41467-024-45466-x] [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: 05/15/2023] [Accepted: 01/25/2024] [Indexed: 02/28/2024] Open
Abstract
Innate immunity provides the first line of defense through multiple mechanisms, including pyrogen production and cell death. While elevated body temperature during infection is beneficial to clear pathogens, heat stress (HS) can lead to inflammation and pathology. Links between pathogen exposure, HS, cytokine release, and inflammation have been observed, but fundamental innate immune mechanisms driving pathology during pathogen exposure and HS remain unclear. Here, we use multiple genetic approaches to elucidate innate immune pathways in infection or LPS and HS models. Our results show that bacteria and LPS robustly increase inflammatory cell death during HS that is dependent on caspase-1, caspase-11, caspase-8, and RIPK3 through the PANoptosis pathway. Caspase-7 also contributes to PANoptosis in this context. Furthermore, NINJ1 is an important executioner of this cell death to release inflammatory molecules, independent of other pore-forming executioner proteins, gasdermin D, gasdermin E, and MLKL. In an in vivo HS model, mortality is reduced by deleting NINJ1 and fully rescued by deleting key PANoptosis molecules. Our findings suggest that therapeutic strategies blocking NINJ1 or its upstream regulators to prevent PANoptosis may reduce the release of inflammatory mediators and benefit patients.
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Affiliation(s)
- Joo-Hui Han
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Woosuk University, Wanju, 55338, Republic of Korea
| | - Rajendra Karki
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
- Department of Biological Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - R K Subbarao Malireddi
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Raghvendra Mall
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
- Biotechnology Research Center, Technology Innovation Institute, Abu Dhabi, P.O. Box 9639, United Arab Emirates
| | - Roman Sarkar
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Bhesh Raj Sharma
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Jonathon Klein
- Center for Advanced Genome Engineering, St Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Harmut Berns
- Center for Advanced Genome Engineering, St Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Harshan Pisharath
- Animal Resources Center, St Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Shondra M Pruett-Miller
- Center for Advanced Genome Engineering, St Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Sung-Jin Bae
- Department of Molecular Biology and Immunology, College of Medicine, Kosin University, Busan, 49267, Republic of Korea
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Huang G, Shen H, Xu K, Shen Y, Jiale Jin, Chu G, Xing H, Feng Z, Wang Y. Single-Cell Microgel Encapsulation Improves the Therapeutic Efficacy of Mesenchymal Stem Cells in Treating Intervertebral Disc Degeneration via Inhibiting Pyroptosis. RESEARCH (WASHINGTON, D.C.) 2024; 7:0311. [PMID: 38371273 PMCID: PMC10871001 DOI: 10.34133/research.0311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 01/14/2024] [Indexed: 02/20/2024]
Abstract
While mesenchymal stem cell (MSC) shows great potentials in treating intervertebral disc degeneration, most MSC die soon after intradiscal transplantation, resulting in inferior therapeutic efficacy. Currently, bulk hydrogels are the common solution to improve MSC survival in tissues, although hydrogel encapsulation impairs MSC migration and disrupts extracellular microenvironment. Cell hydrogel encapsulation has been proposed to overcome the limitation of traditional bulk hydrogels, yet this technique has not been used in treating disc degeneration. Using a layer-by-layer self-assembly technique, we fabricated alginate and gelatin microgel to encapsulate individual MSC for treating disc degeneration. The small size of microgel allowed intradiscal injection of coated MSC. We demonstrated that pyroptosis was involved in MSC death under oxidative stress stimulation, and microgel coating suppressed pyroptosis activation by maintaining mitochondria homeostasis. Microgel coating protected MSC in the harsh disc microenvironment, while retaining vital cellular functions such as migration, proliferation, and differentiation. In a rat model of disc degeneration, coated MSC exhibits prolonged retention in the disc and better efficacy of attenuating disc degeneration, as compared with bare MSC treatment alone. Further, microgel-coated MSC exhibited improved therapeutic effects in treating disc degeneration via suppressing the activation of pyroptosis in the disc. For the first time, microgel-encapsulated MSC was used to treat disc degeneration and obtain encouraging outcomes. The developed biocompatible single-cell hydrogel is an effective strategy to protect MSC and maintain cellular functions and may be an efficacious approach to improving the efficacy of MSC therapy in treating disc degeneration. The objective of this study is to improve the efficacy of cell therapy for treating disc degeneration using single-cell hydrogel encapsulation and further to understand related cytoprotective mechanisms.
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Affiliation(s)
- Guanrui Huang
- Department of Orthopedic Surgery, The First Affiliated Hospital,
Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Haotian Shen
- Department of Orthopedic Surgery, The First Affiliated Hospital,
Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Kaiwang Xu
- Zhejiang University, Hangzhou 310058, China
| | - Yifan Shen
- Department of Orthopedic Surgery, The First Affiliated Hospital,
Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Jiale Jin
- Department of Orthopedic Surgery, The First Affiliated Hospital,
Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Guangyu Chu
- Department of Orthopedic Surgery, The First Affiliated Hospital,
Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Hongyuan Xing
- Department of Orthopedic Surgery, The First Affiliated Hospital,
Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Zhiyun Feng
- Department of Orthopedic Surgery, The First Affiliated Hospital,
Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Yue Wang
- Department of Orthopedic Surgery, The First Affiliated Hospital,
Zhejiang University School of Medicine, Hangzhou 310003, China
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50
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Osbron CA, Lawson C, Hanna N, Koehler HS, Goodman AG. Caspase-8 activity mediates TNFα production and restricts Coxiella burnetii replication during murine macrophage infection. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.02.578698. [PMID: 38352389 PMCID: PMC10862817 DOI: 10.1101/2024.02.02.578698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
Coxiella burnetii is an obligate intracellular bacteria which causes the global zoonotic disease Q Fever. Treatment options for infection are limited, and development of novel therapeutic strategies requires a greater understanding of how C. burnetii interacts with immune signaling. Cell death responses are known to be manipulated by C. burnetii, but the role of caspase-8, a central regulator of multiple cell death pathways, has not been investigated. In this research, we studied bacterial manipulation of caspase-8 signaling and the significance of caspase-8 to C. burnetii infection, examining bacterial replication, cell death induction, and cytokine signaling. We measured caspase, RIPK, and MLKL activation in C. burnetii-infected TNFα/CHX-treated THP-1 macrophage-like cells and TNFα/ZVAD-treated L929 cells to assess apoptosis and necroptosis signaling. Additionally, we measured C. burnetii replication, cell death, and TNFα induction over 12 days in RIPK1-kinase-dead, RIPK3-kinase-dead, or RIPK3-kinase-dead-caspase-8-/- BMDMs to understand the significance of caspase-8 and RIPK1/3 during infection. We found that caspase-8 is inhibited by C. burnetii, coinciding with inhibition of apoptosis and increased susceptibility to necroptosis. Furthermore, C. burnetii replication was increased in BMDMs lacking caspase-8, but not in those lacking RIPK1/3 kinase activity, corresponding with decreased TNFα production and reduced cell death. As TNFα is associated with the control of C. burnetii, this lack of a TNFα response may allow for the unchecked bacterial growth we saw in caspase-8-/- BMDMs. This research identifies and explores caspase-8 as a key regulator of C. burnetii infection, opening novel therapeutic doors.
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Affiliation(s)
- Chelsea A. Osbron
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA, USA
| | - Crystal Lawson
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA, USA
| | - Nolan Hanna
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA, USA
| | - Heather S. Koehler
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA, USA
| | - Alan G. Goodman
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA, USA
- Paul G. Allen School for Global Health, College of Veterinary Medicine, Washington State University, Pullman, WA, USA
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