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Huang W, Xie WB, Qiao D, Qiu P, Huang E, Li B, Chen C, Liu C, Wang Q, Lin Z, Wang H. Caspase-11 plays an essential role in methamphetamine-induced dopaminergic neuron apoptosis. Toxicol Sci 2015; 145:68-79. [PMID: 25631491 DOI: 10.1093/toxsci/kfv014] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Methamphetamine (METH) is an extremely addictive stimulant drug that is widely used with high potential of abuse. Previous studies have shown that METH exposure damages the nervous system, especially dopaminergic neurons. However, the exact molecular mechanisms of METH-induced neurotoxicity remain unclear. We hypothesized that caspase-11 is involved in METH-induced neuronal apoptosis. We tested our hypothesis by examining the change of caspase-11 protein expression in dopaminergic neurons (PC12 and SH-SY5Y) and in the midbrain of rats exposed to METH with Western blotting. We also determined the effects of blocking caspase-11 expression with wedelolactone (a specific inhibitor of caspase-11) or siRNA on METH-induced apoptosis in PC12 cells and SH-SY5Y cells using Annexin V and TUNEL staining. Furthermore, we observed the protein expression changes of the apoptotic markers, cleaved caspase-3 and cleaved poly(ADP-ribose) polymerase 1 (PARP), after silencing the caspase-11 expression in rat midbrain by injecting LV-shcasp11 lentivirus using a stereotaxic positioning system. Results showed that METH exposure increased caspase-11 expression both in vitro and in vivo, with the effects in vitro being dose- and time-dependent. Inhibition of caspase-11 expression with either wedelolactone or siRNAs reduced the number of METH-induced apoptotic cells. In addition, blocking caspase-11 expression inhibited METH-induced activation of caspase-3 and PARP in vitro and in vivo, suggesting that caspase-11/caspase-3 signal pathway is involved in METH-induced neurotoxicity. These results indicate that caspase-11 plays an essential role in METH-induced neuronal apoptosis and may be a potential gene target for therapeutics in METH-caused neurotoxicity.
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Affiliation(s)
- Weiye Huang
- *Department of Forensic Medicine, School of Basic Medical Science, Southern Medical University, Guangzhou 510515, People's Republic of China, Guangzhou Forensic Science Institute, Guangzhou 510030, People's Republic of China and Institute of Computational Comparative Medicine and Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas 66506
| | - Wei-Bing Xie
- *Department of Forensic Medicine, School of Basic Medical Science, Southern Medical University, Guangzhou 510515, People's Republic of China, Guangzhou Forensic Science Institute, Guangzhou 510030, People's Republic of China and Institute of Computational Comparative Medicine and Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas 66506
| | - Dongfang Qiao
- *Department of Forensic Medicine, School of Basic Medical Science, Southern Medical University, Guangzhou 510515, People's Republic of China, Guangzhou Forensic Science Institute, Guangzhou 510030, People's Republic of China and Institute of Computational Comparative Medicine and Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas 66506
| | - Pingming Qiu
- *Department of Forensic Medicine, School of Basic Medical Science, Southern Medical University, Guangzhou 510515, People's Republic of China, Guangzhou Forensic Science Institute, Guangzhou 510030, People's Republic of China and Institute of Computational Comparative Medicine and Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas 66506
| | - Enping Huang
- *Department of Forensic Medicine, School of Basic Medical Science, Southern Medical University, Guangzhou 510515, People's Republic of China, Guangzhou Forensic Science Institute, Guangzhou 510030, People's Republic of China and Institute of Computational Comparative Medicine and Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas 66506
| | - Bing Li
- *Department of Forensic Medicine, School of Basic Medical Science, Southern Medical University, Guangzhou 510515, People's Republic of China, Guangzhou Forensic Science Institute, Guangzhou 510030, People's Republic of China and Institute of Computational Comparative Medicine and Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas 66506
| | - Chuanxiang Chen
- *Department of Forensic Medicine, School of Basic Medical Science, Southern Medical University, Guangzhou 510515, People's Republic of China, Guangzhou Forensic Science Institute, Guangzhou 510030, People's Republic of China and Institute of Computational Comparative Medicine and Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas 66506
| | - Chao Liu
- *Department of Forensic Medicine, School of Basic Medical Science, Southern Medical University, Guangzhou 510515, People's Republic of China, Guangzhou Forensic Science Institute, Guangzhou 510030, People's Republic of China and Institute of Computational Comparative Medicine and Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas 66506
| | - Qi Wang
- *Department of Forensic Medicine, School of Basic Medical Science, Southern Medical University, Guangzhou 510515, People's Republic of China, Guangzhou Forensic Science Institute, Guangzhou 510030, People's Republic of China and Institute of Computational Comparative Medicine and Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas 66506
| | - Zhoumeng Lin
- *Department of Forensic Medicine, School of Basic Medical Science, Southern Medical University, Guangzhou 510515, People's Republic of China, Guangzhou Forensic Science Institute, Guangzhou 510030, People's Republic of China and Institute of Computational Comparative Medicine and Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas 66506
| | - Huijun Wang
- *Department of Forensic Medicine, School of Basic Medical Science, Southern Medical University, Guangzhou 510515, People's Republic of China, Guangzhou Forensic Science Institute, Guangzhou 510030, People's Republic of China and Institute of Computational Comparative Medicine and Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas 66506
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102
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Demon D, Vande Walle L, Lamkanfi M. Sensing the enemy within: how macrophages detect intracellular Gram-negative bacteria. Trends Biochem Sci 2014; 39:574-6. [PMID: 25458607 PMCID: PMC4247376 DOI: 10.1016/j.tibs.2014.10.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 10/20/2014] [Accepted: 10/21/2014] [Indexed: 11/18/2022]
Abstract
Caspase-11 contributes to host defense against Gram-negative bacterial pathogens by inducing an inflammatory form of programmed cell death in infected cells. Lipopolysaccharides (LPS) have been identified as the microbial agents that stimulate caspase-11 activation; however, the mechanism of LPS detection has been unknown. In a recent study, Shao and colleagues demonstrate that caspase-11 and its human homologues, caspases -4 and -5, unexpectedly act as direct sensors of cytosolic LPS.
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Affiliation(s)
- Dieter Demon
- Department of Medical Protein Research, VIB, Ghent, B-9000, Belgium; Department of Biochemistry, Ghent University, Ghent, B-9000, Belgium
| | - Lieselotte Vande Walle
- Department of Medical Protein Research, VIB, Ghent, B-9000, Belgium; Department of Biochemistry, Ghent University, Ghent, B-9000, Belgium
| | - Mohamed Lamkanfi
- Department of Medical Protein Research, VIB, Ghent, B-9000, Belgium; Department of Biochemistry, Ghent University, Ghent, B-9000, Belgium.
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103
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Demon D, Kuchmiy A, Fossoul A, Zhu Q, Kanneganti TD, Lamkanfi M. Caspase-11 is expressed in the colonic mucosa and protects against dextran sodium sulfate-induced colitis. Mucosal Immunol 2014; 7:1480-91. [PMID: 24850431 PMCID: PMC4205216 DOI: 10.1038/mi.2014.36] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Accepted: 04/14/2014] [Indexed: 02/04/2023]
Abstract
Ulcerative colitis and Crohn's disease are major inflammatory syndromes that affect millions of patients. Caspase-11 confers protection against Gram-negative enteropathogens, but its role during colitis is unknown. Here, we show that caspase-11 was constitutively expressed in the colon, and that caspase-11-deficient (caspase-11(-/-)) mice were hypersusceptible to dextran sodium sulfate (DSS)-induced colitis. Notably, pro-inflammatory Prevotella species were strongly reduced in the gut microbiota of caspase-11(-/-) mice. Co-housing with wild-type mice leveled Prevotella contents, but failed to protect caspase-11(-/-) mice from increased susceptibility to DSS-induced colitis. We therefore addressed the role of caspase-11 in immune signaling. DSS-induced tissue damage and inflammatory cell infiltration in the gut were markedly increased in caspase-11−/− mice, while release of the pyroptosis/necroptosis marker HMGB1 was abolished [Corrected]. Moreover, caspase-11(-/-) mice showed normal or increased production of mature interleukin (IL)-1β and IL-18, whereas IL-1β and IL-18 secretion was blunted in animals lacking both caspases 1 and 11. In conclusion, we showed that caspase-11 shapes the gut microbiota composition, and that caspase-11(-/-) mice are highly susceptible to DSS-induced colitis. Moreover, DSS-induced inflammasome activation relied on caspase-1, but not caspase-11. These results suggest a role for other caspase-11 effector mechanisms such as pyroptosis in protection against intestinal inflammation.
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Affiliation(s)
- Dieter Demon
- Department of Medical Protein Research, VIB, Ghent, B-9000, Belgium,Department of Biochemistry, Ghent University, Ghent, B-9000, Belgium
| | - Anna Kuchmiy
- Department of Medical Protein Research, VIB, Ghent, B-9000, Belgium,Department of Biochemistry, Ghent University, Ghent, B-9000, Belgium
| | - Amelie Fossoul
- Department of Medical Protein Research, VIB, Ghent, B-9000, Belgium,Department of Biochemistry, Ghent University, Ghent, B-9000, Belgium
| | - Qifan Zhu
- Department of Immunology, St. Jude Children’s Research Hospital, Memphis, TN, 38105-2794, USA
| | | | - Mohamed Lamkanfi
- Department of Medical Protein Research, VIB, Ghent, B-9000, Belgium,Department of Biochemistry, Ghent University, Ghent, B-9000, Belgium
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104
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Casson CN, Shin S. Inflammasome-mediated cell death in response to bacterial pathogens that access the host cell cytosol: lessons from legionella pneumophila. Front Cell Infect Microbiol 2013; 3:111. [PMID: 24409420 PMCID: PMC3873505 DOI: 10.3389/fcimb.2013.00111] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Accepted: 12/16/2013] [Indexed: 11/25/2022] Open
Abstract
Cell death can be critical for host defense against intracellular pathogens because it eliminates a crucial replicative niche, and pro-inflammatory cell death can alert neighboring cells to the presence of pathogenic organisms and enhance downstream immune responses. Pyroptosis is a pro-inflammatory form of cell death triggered by the inflammasome, a multi-protein complex that assembles in the cytosol to activate caspase-1. Inflammasome activation by pathogens hinges upon violation of the host cell cytosol by activities such as the use of pore-forming toxins, the use of specialized secretion systems, or the cytosolic presence of the pathogen itself. Recently, a non-canonical inflammasome has been described that activates caspase-11 and also leads to pro-inflammatory cell death. Caspase-11 is activated rapidly and robustly in response to violation of the cytosol by bacterial pathogens as well. In this mini-review, we describe the canonical and non-canonical inflammasome pathways that are critical for host defense against a model intracellular bacterial pathogen that accesses the host cytosol—Legionella pneumophila.
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Affiliation(s)
- Cierra N Casson
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania Philadelphia, PA, USA
| | - Sunny Shin
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania Philadelphia, PA, USA
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105
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Yang JR, Yao FH, Zhang JG, Ji ZY, Li KL, Zhan J, Tong YN, Lin LR, He YN. Ischemia-reperfusion induces renal tubule pyroptosis via the CHOP- caspase-11 pathway. Am J Physiol Renal Physiol 2013; 306:F75-84. [PMID: 24133119 DOI: 10.1152/ajprenal.00117.2013] [Citation(s) in RCA: 145] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The apoptotic or necrotic death of renal tubule epithelial cells is the main pathogenesis of renal ischemia-reperfusion-induced acute kidney injury (AKI). Pyroptosis is a programmed cell death pathway that depends on the activation of the caspase cascade and IL-1 cytokine family members. However, the role of pyroptosis in AKI induced by ischemia-reperfusion remains unclear. In this study, we found that the levels of the pyroptosis-related proteins, including caspase-1, caspase-11, and IL-1β, were significantly increased after 6 h of renal ischemia-reperfusion injury (IRI) and peaked at 12 h after IRI. Enhanced pyroptosis was accompanied by elevated renal structural and functional injury. Similarly, hypoxia-reoxygenation injury (HRI) also induced pyroptosis in renal tubule epithelial NRK-52E cells, which was characterized by increased pore formation and elevated lactate dehydrogenase release. In addition, obvious upregulation of the endoplasmic reticulum (ER) stress biomarkers glucose-regulated protein 78 and C/EBP homologous protein (CHOP) preceded the incidence of pyroptosis in cells treated with IRI or HRI. Pretreatment with a low dose of tunicamycin, an inducer of ER stress, relieved IRI-induced pyroptosis and renal tissue injury. Silencing of CHOP by small interfering RNA significantly decreased HRI-induced pyroptosis of NRK-52E cells, as evidenced by reduced caspase-11 activity and IL-1β generation. Therefore, we conclude that pyroptosis of renal tubule epithelial cells is a key event during IRI and that CHOP-caspase-11 triggered by overactivated ER stress may be an essential pathway involved in pyroptosis.
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Affiliation(s)
- Ju-Rong Yang
- Dept. of Nephrology, Daping Hospital, Research Institute of Surgery, the Third Military Medical Univ., Chongqing 400042, China.
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106
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Kang SJ, Wang S, Hara H, Peterson EP, Namura S, Amin-Hanjani S, Huang Z, Srinivasan A, Tomaselli KJ, Thornberry NA, Moskowitz MA, Yuan J. Dual role of caspase-11 in mediating activation of caspase-1 and caspase-3 under pathological conditions. J Cell Biol 2000; 149:613-22. [PMID: 10791975 PMCID: PMC2174843 DOI: 10.1083/jcb.149.3.613] [Citation(s) in RCA: 249] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Caspase-11, a member of the murine caspase family, has been shown to be an upstream activator of caspase-1 in regulating cytokine maturation. We demonstrate here that in addition to its defect in cytokine maturation, caspase-11-deficient mice have a reduced number of apoptotic cells and a defect in caspase-3 activation after middle cerebral artery occlusion (MCAO), a mouse model of stroke. Recombinant procaspase-11 can autoprocess itself in vitro. Purified active recombinant caspase-11 cleaves and activates procaspase-3 very efficiently. Using a positional scanning combinatorial library method, we found that the optimal cleavage site of caspase-11 was (I/L/V/P)EHD, similar to that of upstream caspases such as caspase-8 and -9. Our results suggest that caspase-11 is a critical initiator caspase responsible for the activation of caspase-3, as well as caspase-1 under certain pathological conditions.
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Affiliation(s)
- Shin-Jung Kang
- Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115
| | - Suyue Wang
- Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115
| | - Hideaki Hara
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129
| | - Erin P. Peterson
- Department of Enzymology, Merck Research Laboratories, Rahway, New Jersey 07065
| | - Shobu Namura
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129
| | - Sepideh Amin-Hanjani
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129
| | - Zhihong Huang
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129
| | | | | | - Nancy A. Thornberry
- Department of Enzymology, Merck Research Laboratories, Rahway, New Jersey 07065
| | - Michael A. Moskowitz
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129
| | - Junying Yuan
- Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115
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