151
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Hu Y, Wang B, Li S, Yang S. Pyroptosis, and its Role in Central Nervous System Disease. J Mol Biol 2021; 434:167379. [PMID: 34838808 DOI: 10.1016/j.jmb.2021.167379] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 11/16/2021] [Accepted: 11/20/2021] [Indexed: 02/07/2023]
Abstract
Pyroptosis is an inflammatory form of cell death executed by transmembrane pore-forming proteins known as gasdermins and can be activated in an inflammasome-dependent or -independent manner. Inflammasome-dependent pyroptosis is triggered in response to pathogen-associated molecular patterns (PAMPs) or damage-associated molecular patterns (DAMPs) and has emerged as an important player in the pathogenesis of multiple inflammatory diseases, mainly by releasing inflammatory contents. More recently, numerous studies have revealed the intricate mechanisms of pyroptosis and its role in the development of neuroinflammation in central nervous system (CNS) diseases. In this review, we summarize current understandings of the molecular and regulatory mechanisms of pyroptosis. In addition, we discuss how pyroptosis can drive different forms of neurological diseases and new promising therapeutic strategies targeting pyroptosis that can be leveraged to treat neuroinflammation.
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Affiliation(s)
- Yingchao Hu
- Department of Immunology, Key Laboratory of Immunological Environment and Disease, Gusu School, State Key Laboratory of Reproductive Medicine, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Personalized Cancer Medicine, Center for Global Health, Nanjing Medical University, Nanjing 211166, China
| | - Bingwei Wang
- Department of Pharmacology, Nanjing University of Chinese Medicine, Nanjing, China.
| | - Sheng Li
- Department of Neurology, Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China.
| | - Shuo Yang
- Department of Immunology, Key Laboratory of Immunological Environment and Disease, Gusu School, State Key Laboratory of Reproductive Medicine, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Personalized Cancer Medicine, Center for Global Health, Nanjing Medical University, Nanjing 211166, China.
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152
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Rh-CXCL-12 Attenuates Neuronal Pyroptosis after Subarachnoid Hemorrhage in Rats via Regulating the CXCR4/NLRP1 Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:6966394. [PMID: 34795842 PMCID: PMC8595028 DOI: 10.1155/2021/6966394] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Accepted: 10/19/2021] [Indexed: 12/16/2022]
Abstract
Subarachnoid hemorrhage (SAH) is a cerebrovascular disease associated with high morbidity and mortality. CXCR4 provides neuroprotective effects, which can alleviate brain injury and inflammation induced by stroke. Previous studies have suggested that CXCR4 reduces the pyroptosis of LPS-stimulated BV2 cells. The purpose of this study was to evaluate the antipyroptosis effects and mechanisms of CXCR4 after SAH. SAH animal model was induced via endovascular perforation. A total of 136 male Sprague-Dawley rats were used. Recombinant human cysteine-X-cysteine chemokine ligand 12 (rh-CXCL-12) was administered intranasally at 1 h after SAH induction. To investigate the underlying mechanism, the inhibitor of CXCR4, AMD3100, was administered intraperitoneally at 1 h before SAH. The neurobehavior tests were assessed, followed by performing Western blot and immunofluorescence staining. The Western blot results suggested that the expressions of endogenous CXCL-12, CXCR4, and NLRP1 were increased and peaked at 24 h following SAH. Immunofluorescence staining showed that CXCR4 was expressed on neurons, microglia, and astrocytes. Rh-CXCL-12 treatment improved the neurological deficits and reduced the number of FJC-positive cells, IL-18-positive neurons, and cleaved caspase-1(CC-1)-positive neurons after SAH. Meanwhile, rh-CXCL-12 treatment increased the levels of CXCL-12 and CXCR4, and reduced the levels of NLRP1, IL-18, IL-1β, and CC-1. Moreover, the administration of AMD3100 abolished antipyroptosis effects of CXCL-12 and its regulation of CXCR4 post-SAH. The CXCR4/NLRP1 signaling pathway may be involved in CXCL-12-mediated neuronal pyroptosis after SAH. Early administration of CXCL-12 may be a preventive and therapeutic strategy against brain injury after SAH.
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153
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Memou A, Dimitrakopoulos L, Kedariti M, Kentros M, Lamprou A, Petropoulou-Vathi L, Valkimadi PE, Rideout HJ. Defining (and blocking) neuronal death in Parkinson's disease: Does it matter what we call it? Brain Res 2021; 1771:147639. [PMID: 34492263 DOI: 10.1016/j.brainres.2021.147639] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 07/29/2021] [Accepted: 08/24/2021] [Indexed: 12/20/2022]
Abstract
Parkinson's disease (PD) is the second most common neurodegenerative disease, comprised of both familial and idiopathic forms, behind only Alzheimer's disease (AD). The disease is characterized, regardless of the pathogenesis, primarily by a loss of DA neurons in the ventral midbrain as well as noradrenergic neurons of the locus coeruleus; however, by the time symptoms manifest, considerable neuronal loss in both areas has occurred. Neuroprotective strategies thus have to be paired with more sensitive and specific biomarker assays that can identify early at-risk patients in order to initiate disease-modifying therapies at an earlier stage in the disease. Complicating this is the fact that multiple forms of cell death mediate the neuronal loss; however, with a common underlying element that the cell death is considered a "regulated" form of cell death, in contrast to an un-controlled necrotic cell death process. In this review we focus our discussion on several categories of regulated cell death in the context of PD: apoptosis, necroptosis, pyroptosis, and autophagic cell death. In clinical studies as well as experimental in vivo models of PD, there is evidence for a role of each of these forms of cell death in the loss of midbrain DA neurons, and specific therapeutic strategies have been proposed and tested. What remains unclear however is the relative contributions of these distinct forms of cell death to the overall loss of DA neurons, whether they occur at different stages of the disease, or whether specific sub-regions within the midbrain are more susceptible to specific death triggers and pathways.
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Affiliation(s)
- Anna Memou
- Laboratory of Neurodegenerative Diseases, Center for Clinical, Experimental Surgery, and Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Lampros Dimitrakopoulos
- Laboratory of Neurodegenerative Diseases, Center for Clinical, Experimental Surgery, and Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Maria Kedariti
- Laboratory of Neurodegenerative Diseases, Center for Clinical, Experimental Surgery, and Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Michalis Kentros
- Laboratory of Neurodegenerative Diseases, Center for Clinical, Experimental Surgery, and Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Andriana Lamprou
- Laboratory of Neurodegenerative Diseases, Center for Clinical, Experimental Surgery, and Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Lilian Petropoulou-Vathi
- Laboratory of Neurodegenerative Diseases, Center for Clinical, Experimental Surgery, and Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Polytimi-Eleni Valkimadi
- Laboratory of Neurodegenerative Diseases, Center for Clinical, Experimental Surgery, and Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Hardy J Rideout
- Laboratory of Neurodegenerative Diseases, Center for Clinical, Experimental Surgery, and Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece.
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154
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Transcriptomic Studies Suggest a Coincident Role for Apoptosis and Pyroptosis but Not for Autophagic Neuronal Death in TBEV-Infected Human Neuronal/Glial Cells. Viruses 2021; 13:v13112255. [PMID: 34835061 PMCID: PMC8620470 DOI: 10.3390/v13112255] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 11/01/2021] [Accepted: 11/04/2021] [Indexed: 12/19/2022] Open
Abstract
Tick-borne encephalitis virus (TBEV), a member of the Flaviviridae family, Flavivirus genus, is responsible for neurological symptoms that may cause permanent disability or death. With an incidence on the rise, it is the major arbovirus affecting humans in Central/Northern Europe and North-Eastern Asia. Neuronal death is a critical feature of TBEV infection, yet little is known about the type of death and the molecular mechanisms involved. In this study, we used a recently established pathological model of TBEV infection based on human neuronal/glial cells differentiated from fetal neural progenitors and transcriptomic approaches to tackle this question. We confirmed the occurrence of apoptotic death in these cultures and further showed that genes involved in pyroptotic death were up-regulated, suggesting that this type of death also occurs in TBEV-infected human brain cells. On the contrary, no up-regulation of major autophagic genes was found. Furthermore, we demonstrated an up-regulation of a cluster of genes belonging to the extrinsic apoptotic pathway and revealed the cellular types expressing them. Our results suggest that neuronal death occurs by multiple mechanisms in TBEV-infected human neuronal/glial cells, thus providing a first insight into the molecular pathways that may be involved in neuronal death when the human brain is infected by TBEV.
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155
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Rong R, Yang R, Li H, You M, Liang Z, Zeng Z, Zhou R, Xia X, Ji D. The roles of mitochondrial dynamics and NLRP3 inflammasomes in the pathogenesis of retinal light damage. Ann N Y Acad Sci 2021; 1508:78-91. [PMID: 34741555 DOI: 10.1111/nyas.14716] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 10/01/2021] [Accepted: 10/12/2021] [Indexed: 12/15/2022]
Abstract
With the widespread popularity of electronic products and the diversification of lighting equipment, ocular photochemical damage caused by light has attracted research attention. Although such equipment mainly cause damage to the retina, the specific pathogenesis has not been systematically elucidated. Thus, the goal of this study was to explore the relationship between mitochondrial dysfunction and the activation of the NOD-like receptor protein 3 (NLRP3) inflammasome in retinal cell death caused by light damage. We used a white light-emitting diode source to establish a mouse model of retinal light damage and observed significant changes of retinal structure and an impairment of visual function. Further experiments revealed that dynamin-related protein 1 (Drp1)-mediated excessive mitochondrial fission induced overproduction of reactive oxygen species in the retinal cells, leading to apoptosis, activation of microglia, and formation of the NLRP3 inflammasome. This, in turn, triggered a series of inflammatory cascade reactions, leading to pyroptosis. We also carried out red light and Drp1 inhibitor treatment and found that retinal damage and the decline in visual function caused by white light could be partially ameliorated. In conclusion, this study clarified the association between mitochondrial dynamics and the NLRP3 inflammasome in retinal light damage and provides opportunities for therapeutic intervention.
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Affiliation(s)
- Rong Rong
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
| | - Rongliang Yang
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
| | - Haibo Li
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
| | - Mengling You
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
| | - Zhuotao Liang
- Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhou Zeng
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
| | - Rongrong Zhou
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiaobo Xia
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
| | - Dan Ji
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
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156
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Sun W, Lu H, Dong S, Li R, Chu Y, Wang N, Zhao Y, Zhang Y, Wang L, Sun L, Lu D. Beclin1 controls caspase-4 inflammsome activation and pyroptosis in mouse myocardial reperfusion-induced microvascular injury. Cell Commun Signal 2021; 19:107. [PMID: 34732218 PMCID: PMC8565084 DOI: 10.1186/s12964-021-00786-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 09/06/2021] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Myocardial reperfusion injury is often accompanied by cell death and inflammatory reactions. Recently, pyroptosis is gradually recognized as pivotal role in cardiovascular disease. However, little is known about the regulatory role of beclin1 in the control of caspase-4 activation and pyroptosis. The present study confirmed whether beclin1 regulates caspase-4 mediated pyroptosis and thereby protects Human Cardiac microvascular endothelial cells (HCMECs) against injury. METHODS TTC and Evan's blue dye, western blot, immunofluorescence and immunohistochemistry staining were performed in wild mice and transgenic mice with overexpression of beclin 1(BECN1-Tg). CMECs were transfected with a beclin1 lentivirus. The cell cytotoxicity was analyzed by LDH-Cytotoxicity Assay Kit. The protein levels of autophagy protein (Beclin1, p62 and LC3II/LC3I) and caspase-4/GSDMD pathway were determined by western blot. Autophagic vacuoles in cells were monitored with RFP-GFP-LC3 using fluorescence microscope. RESULTS I/R caused caspase-4 activity and gasdermin D expression increase in vivo and in vitro. Overexpression of beclin1 in heart tissue and CMECs suppressed the caspase-4 activity and decreased the levels of gasdermin D; meanwhile beclin1 overexpression also reduced IL-1β levels, promoted autophagy (p62 expression was inhibited while LC3II expression was increased) in the heart and CMECs. Interestingly, beclin1 overexpression increased animal survival and attenuated myocardial infarct size (45 ± 6.13 vs 22 ± 4.37), no-reflow area (39 ± 5.22 vs 16 ± 2.54) post-myocardial ischemia reperfusion. CONCLUSIONS Induction of beclin-1 signaling can be a potential therapeutic target in myocardial reperfusion-induced microvascular injury. Video Abstract.
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Affiliation(s)
- Wenjing Sun
- Department of Cardiology, Henan Provincial People’s Hospital, Zhengzhou, 450000 China
| | - Hongquan Lu
- Department of Nuclear Medicine, Third People’s Hospital of Honghe State, Honghe, 661000 China
| | - Shujuan Dong
- Department of Cardiology, Henan Provincial People’s Hospital, Zhengzhou, 450000 China
| | - Rui Li
- Department of Cardiology, Yunnan Geriatric Hospital, Kunming, 650501 China
| | - Yingjie Chu
- Department of Cardiology, Henan Provincial People’s Hospital, Zhengzhou, 450000 China
| | - Nan Wang
- Science and Technology Achievement Incubation Center, Kunming Medical University, Chenggong District, 1168 West Chunrong Road, Yuhua Avenue, Kunming, 650500 Yunnan China
| | - Yu Zhao
- Science and Technology Achievement Incubation Center, Kunming Medical University, Chenggong District, 1168 West Chunrong Road, Yuhua Avenue, Kunming, 650500 Yunnan China
| | - Yabin Zhang
- Department of Nuclear Medicine, Third People’s Hospital of Honghe State, Honghe, 661000 China
| | - Limeiting Wang
- Science and Technology Achievement Incubation Center, Kunming Medical University, Chenggong District, 1168 West Chunrong Road, Yuhua Avenue, Kunming, 650500 Yunnan China
| | - Lin Sun
- Department of Cardiology, The Second Affiliated Hospital, Kunming Medical University, 374 Dianmian Road, Wuhua District, Kunming, 650101 China
| | - Di Lu
- Science and Technology Achievement Incubation Center, Kunming Medical University, Chenggong District, 1168 West Chunrong Road, Yuhua Avenue, Kunming, 650500 Yunnan China
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157
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Li S, An W, Wang B, Li J, Qu Y, Zhang H, Zhang Y, Wang S, Qin L. Inorganic nitrate alleviates irradiation-induced salivary gland damage by inhibiting pyroptosis. Free Radic Biol Med 2021; 175:130-140. [PMID: 34454049 DOI: 10.1016/j.freeradbiomed.2021.08.227] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 08/11/2021] [Accepted: 08/24/2021] [Indexed: 01/02/2023]
Abstract
Over 80% of patients undergoing radiotherapy (RT) for head and neck cancer (HNC) suffer reduced saliva secretion and dry mouth symptoms due to salivary gland damage. Although therapeutic interventions to alleviate such RT-induced damage are available, long-term hypofunction remains a significant issue. Therefore, novel therapeutic solutions to prevent irradiation (IR)-induced salivary gland damage are required. This study explored the protective effect of inorganic nitrate in preventing IR-induced salivary gland injury via pyroptosis suppression, both in vivo and in vitro. In the treatment group, C57BL/6 mice were pretreated with 2 mmol/L NaNO3 supplied in drinking water one week before a single-dose of 15 Gy IR in the submandibular gland (SMG) region. Human vein endothelial cells (HUVECs) and mice SMG cells were treated with 10 μmol/L or 100 μmol/L NaNO3 2 h before a single-dose of 8 Gy IR. In vivo, IR-induced decreased saliva flow rate and body weight loss could be alleviated by nitrate supplementation. Nitrate prevented acinar and microvascular endothelial cell loss. Moreover, nitrate improved mitochondrial function and significantly decreased pyroptosis-related indexes. In vitro, nitrate supplementation reduced reactive oxygen species (ROS) generation by preserving mitochondrial homeostasis to inhibit NLPR3 inflammasome-mediated pyroptosis both in HUVECs and SMG cells. Nitrate showed potential as an oral protective agent to prevent IR-induced salivary gland damage; prospective insight into the underlying molecular mechanisms is presented.
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Affiliation(s)
- Shaoqing Li
- Department of Oral and Maxillofacial & Head and Neck Oncology, Beijing Stomatological Hospital, Capital Medical University, Beijing, 100050, China; Beijing Laboratory of Oral Helath, Capital Medical University, Beijing 100069, China; Department of Stomatology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, 100091, China
| | - Wei An
- Department of Oral and Maxillofacial & Head and Neck Oncology, Beijing Stomatological Hospital, Capital Medical University, Beijing, 100050, China; Beijing Laboratory of Oral Helath, Capital Medical University, Beijing 100069, China; Department of Oral and Maxillofacial Surgery, Shanxi Provincial People's Hospital, Taiyuan, Shanxi, 030012, China
| | - Bin Wang
- Department of Oral and Maxillofacial & Head and Neck Oncology, Beijing Stomatological Hospital, Capital Medical University, Beijing, 100050, China
| | - Jing Li
- Department of Oral and Maxillofacial & Head and Neck Oncology, Beijing Stomatological Hospital, Capital Medical University, Beijing, 100050, China
| | - Yi Qu
- Department of Oral and Maxillofacial & Head and Neck Oncology, Beijing Stomatological Hospital, Capital Medical University, Beijing, 100050, China
| | - Haoyang Zhang
- Department of Oral and Maxillofacial & Head and Neck Oncology, Beijing Stomatological Hospital, Capital Medical University, Beijing, 100050, China
| | - Yingrui Zhang
- Department of Oral and Maxillofacial & Head and Neck Oncology, Beijing Stomatological Hospital, Capital Medical University, Beijing, 100050, China
| | - Songlin Wang
- Beijing Laboratory of Oral Helath, Capital Medical University, Beijing 100069, China; Department of Biochemistry and Molecular Biology, Capital Medical University School of Basic Medicine, Beijing 100069, China.
| | - Lizheng Qin
- Department of Oral and Maxillofacial & Head and Neck Oncology, Beijing Stomatological Hospital, Capital Medical University, Beijing, 100050, China; Beijing Laboratory of Oral Helath, Capital Medical University, Beijing 100069, China.
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158
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Deng Z, Yang Z, Peng J. Role of bioactive peptides derived from food proteins in programmed cell death to treat inflammatory diseases and cancer. Crit Rev Food Sci Nutr 2021:1-19. [PMID: 34694177 DOI: 10.1080/10408398.2021.1992606] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Bioactive peptides are specific peptide which usually contains 2-20 amino acid residues and actively exerts various functions and biological activities and ultimately affect health. Programmed cell deaths are some styles of cell death discovered in recent years, which is the key to tissue development and balance, eliminating excess, damaged or aging cells. More importantly, programmed cell death is a potential way to treat inflammatory diseases and cancer. In this review, through screening references from 2015 to present, we introduce the effect of bioactive peptides derived from food proteins on inflammatory diseases or cancer through regulating programmed cell deaths, including apoptosis, autophagy, pyroptosis, ferroptosis, and necroptosis. And this review also introduces the targets of these bioactive peptides to regulate programmed cell death. The purpose of this review is to help to expand the prospective applications of bioactive peptides in the field of inflammatory disease and cancer to provide some guidance.
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Affiliation(s)
- Zhao Deng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, P. R. China.,State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Zhipeng Yang
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, P. R. China
| | - Jian Peng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, P. R. China.,State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China.,The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei, China
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159
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Yong Y, Hunter-Chang S, Stepanova E, Deppmann C. Axonal spheroids in neurodegeneration. Mol Cell Neurosci 2021; 117:103679. [PMID: 34678457 PMCID: PMC8742877 DOI: 10.1016/j.mcn.2021.103679] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 10/12/2021] [Accepted: 10/15/2021] [Indexed: 10/20/2022] Open
Abstract
Axonal spheroids are bubble-like biological features that form on most degenerating axons, yet little is known about their influence on degenerative processes. Their formation and growth has been observed in response to various degenerative triggers such as injury, oxidative stress, inflammatory factors, and neurotoxic molecules. They often contain cytoskeletal elements and organelles, and, depending on the pathological insult, can colocalize with disease-related proteins such as amyloid precursor protein (APP), ubiquitin, and motor proteins. Initial formation of axonal spheroids depends on the disruption of axonal and membrane tension governed by cytoskeleton structure and calcium levels. Shortly after spheroid formation, the engulfment signal phosphatidylserine (PS) is exposed on the outer leaflet of spheroid plasma membrane, suggesting an important role for axonal spheroids in phagocytosis and debris clearance during degeneration. Spheroids can grow until they rupture, allowing pro-degenerative factors to exit the axon into extracellular space and accelerating neurodegeneration. Though much remains to be discovered in this area, axonal spheroid research promises to lend insight into the etiologies of neurodegenerative disease, and may be an important target for therapeutic intervention. This review summarizes over 100 years of work, describing what is known about axonal spheroid structure, regulation and function.
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Affiliation(s)
- Yu Yong
- Department of Biology, University of Virginia, Charlottesville, VA 22903, USA
| | - Sarah Hunter-Chang
- Neuroscience Graduate Program, University of Virginia, Charlottesville, VA 22903, USA
| | - Ekaterina Stepanova
- Department of Biology, University of Virginia, Charlottesville, VA 22903, USA
| | - Christopher Deppmann
- Department of Biology, University of Virginia, Charlottesville, VA 22903, USA; Neuroscience Graduate Program, University of Virginia, Charlottesville, VA 22903, USA.
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160
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Zhang Z, Bai H, Ma X, Shen M, Li R, Qiu D, Li S, Gao L. Blockade of the NLRP3/caspase-1 axis attenuates ketamine-induced hippocampus pyroptosis and cognitive impairment in neonatal rats. J Neuroinflammation 2021; 18:239. [PMID: 34666787 PMCID: PMC8527745 DOI: 10.1186/s12974-021-02295-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Accepted: 10/11/2021] [Indexed: 01/23/2023] Open
Abstract
Background Multiple studies have revealed that repeated or long-term exposure to ketamine causes neurodegeneration and cognitive dysfunction. Pyroptosis is an inflammatory form of programmed cell death that has been linked to various neurological diseases. However, the role of NLRP3/caspase-1 axis-related pyroptosis in ketamine-induced neurotoxicity and cognitive dysfunction remains uncertain. Methods To evaluate whether ketamine caused NLRP3/caspase1-dependent pyroptosis, flow cytometry analysis, western blotting, ELISA test, histopathological analysis, Morris water maze (MWM) test, cell viability assay, and lactate dehydrogenase release (LDH) assay were carried out on PC12 cells, HAPI cells, and 7-day-old rats. In addition, the NLRP3 inhibitor MCC950 or the caspase-1 inhibitor VX-765 was used to investigate the role of the NLRP3/caspase-1 axis in ketamine-induced neurotoxicity and cognitive dysfunction. Results Our findings demonstrated that ketamine exposure caused cell damage and increased the levels of pyroptosis in PC12 cells, HAPI cells, and the hippocampus of neonatal rats. After continuous exposure to ketamine, targeting NLRP3 and caspase-1 with MCC950 or VX765 improved pyroptosis, reduced neuropathological damages, and alleviated cognitive dysfunction. Conclusion NLRP3/Caspase-1 axis-dependent pyroptosis is involved in ketamine-induced neuroinflammation and cognitive dysfunction, and it provides a promising strategy to treat ketamine-related neurotoxicity. Supplementary Information The online version contains supplementary material available at 10.1186/s12974-021-02295-9.
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Affiliation(s)
- Zhiheng Zhang
- College of Veterinary Medicine, Northeast Agricultural University, No. 600 Changjiang Rd, Xiangfang District, Harbin, 150030, China.,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, College of Veterinary Medicine, Northeast Agriculture University, Harbin, China
| | - Hui Bai
- College of Veterinary Medicine, Northeast Agricultural University, No. 600 Changjiang Rd, Xiangfang District, Harbin, 150030, China.,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, College of Veterinary Medicine, Northeast Agriculture University, Harbin, China
| | - Xiangying Ma
- College of Veterinary Medicine, Northeast Agricultural University, No. 600 Changjiang Rd, Xiangfang District, Harbin, 150030, China.,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, College of Veterinary Medicine, Northeast Agriculture University, Harbin, China
| | - Meilun Shen
- College of Veterinary Medicine, Northeast Agricultural University, No. 600 Changjiang Rd, Xiangfang District, Harbin, 150030, China.,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, College of Veterinary Medicine, Northeast Agriculture University, Harbin, China
| | - Rouqian Li
- College of Veterinary Medicine, Northeast Agricultural University, No. 600 Changjiang Rd, Xiangfang District, Harbin, 150030, China.,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, College of Veterinary Medicine, Northeast Agriculture University, Harbin, China
| | - Di Qiu
- College of Veterinary Medicine, Northeast Agricultural University, No. 600 Changjiang Rd, Xiangfang District, Harbin, 150030, China.,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, College of Veterinary Medicine, Northeast Agriculture University, Harbin, China
| | - Siyao Li
- College of Veterinary Medicine, Northeast Agricultural University, No. 600 Changjiang Rd, Xiangfang District, Harbin, 150030, China.,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, College of Veterinary Medicine, Northeast Agriculture University, Harbin, China
| | - Li Gao
- College of Veterinary Medicine, Northeast Agricultural University, No. 600 Changjiang Rd, Xiangfang District, Harbin, 150030, China. .,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, College of Veterinary Medicine, Northeast Agriculture University, Harbin, China.
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161
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Xu Y, Hu X, Li F, Zhang H, Lou J, Wang X, Wang H, Yin L, Ni W, Kong J, Wang X, Li Y, Zhou K, Xu H. GDF-11 Protects the Traumatically Injured Spinal Cord by Suppressing Pyroptosis and Necroptosis via TFE3-Mediated Autophagy Augmentation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:8186877. [PMID: 34712387 PMCID: PMC8548157 DOI: 10.1155/2021/8186877] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 08/27/2021] [Indexed: 12/11/2022]
Abstract
Spinal cord injury (SCI) refers to a major worldwide cause of accidental death and disability. However, the complexity of the pathophysiological mechanism can result in less-effective clinical treatment. Growth differentiation factor 11 (GDF-11), an antiageing factor, was reported to affect the development of neurogenesis and exert a neuroprotective effect after cerebral ischaemic injury. The present work is aimed at investigating the influence of GDF-11 on functional recovery following SCI, in addition to the potential mechanisms involved. We employed a mouse model of spinal cord contusion injury and assessed functional outcomes via the Basso Mouse Scale and footprint analysis following SCI. Using western blot assays and immunofluorescence, we analysed the levels of pyroptosis, autophagy, necroptosis, and molecules related to the AMPK-TRPML1-calcineurin signalling pathway. The results showed that GDF-11 noticeably optimized function-related recovery, increased autophagy, inhibited pyroptosis, and alleviated necroptosis following SCI. Furthermore, the conducive influences exerted by GDF-11 were reversed with the application of 3-methyladenine (3MA), an autophagy suppressor, indicating that autophagy critically impacted the therapeutically related benefits of GDF-11 on recovery after SCI. In the mechanistic study described herein, GDF-11 stimulated autophagy improvement and subsequently inhibited pyroptosis and necroptosis, which were suggested to be mediated by TFE3; this effect resulted from the activity of TFE3 through the AMPK-TRPML1-calcineurin signalling cascade. Together, GDF-11 protects the injured spinal cord by suppressing pyroptosis and necroptosis via TFE3-mediated autophagy augmentation and is a potential agent for SCI therapy.
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Affiliation(s)
- Yu Xu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Xinli Hu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Feida Li
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Haojie Zhang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Junsheng Lou
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Xingyu Wang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Hui Wang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Lingyan Yin
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Wenfei Ni
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Jianzhong Kong
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Xiangyang Wang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Yao Li
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Kailiang Zhou
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Hui Xu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
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The roles of GTPase-activating proteins in regulated cell death and tumor immunity. J Hematol Oncol 2021; 14:171. [PMID: 34663417 PMCID: PMC8524929 DOI: 10.1186/s13045-021-01184-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 09/27/2021] [Indexed: 12/22/2022] Open
Abstract
GTPase-activating protein (GAP) is a negative regulator of GTPase protein that is thought to promote the conversion of the active GTPase-GTP form to the GTPase-GDP form. Based on its ability to regulate GTPase proteins and other domains, GAPs are directly or indirectly involved in various cell requirement processes. We reviewed the existing evidence of GAPs regulating regulated cell death (RCD), mainly apoptosis and autophagy, as well as some novel RCDs, with particular attention to their association in diseases, especially cancer. We also considered that GAPs could affect tumor immunity and attempted to link GAPs, RCD and tumor immunity. A deeper understanding of the GAPs for regulating these processes could lead to the discovery of new therapeutic targets to avoid pathologic cell loss or to mediate cancer cell death.
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163
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Gao H, Cao M, Yao Y, Hu W, Sun H, Zhang Y, Zeng C, Tang J, Luan S, Chen P. Dysregulated Microbiota-Driven Gasdermin D Activation Promotes Colitis Development by Mediating IL-18 Release. Front Immunol 2021; 12:750841. [PMID: 34721422 PMCID: PMC8551709 DOI: 10.3389/fimmu.2021.750841] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 09/29/2021] [Indexed: 01/07/2023] Open
Abstract
The balance between gut microbiota and host is critical for maintaining host health. Although dysregulation of the gut microbiota triggers the development of various inflammatory diseases, including colitis, the molecular mechanism of microbiota-driven colitis development is largely unknown. Here, we found that gasdermin D (GSDMD) was activated during acute colitis. In the dextran sulfate sodium (DSS)-induced colitis model, compared to wild-type mice, Gsdmd-deficient mice had less colitis severity. Mechanistically, GSDMD expression in intestinal epithelial cells (IECs), but not infiltrating immune cells, was critical for GSDMD-mediated colitis progression. Moreover, commensal Escherichia coli (E. coli) largely overgrew during colitis, and then the dysregulated commensal E. coli mediated GSDMD activation. Furthermore, the activated GSDMD promoted the release of interleukin-18 (IL-18), but not the transcript or maturation level of IL-18, which in turn mediated goblet cell loss to induce colitis development. Thus, GSDMD promotes colitis development by mediating IL-18 release, and the microbiota can mediate colitis pathogenesis through regulation of GSDMD activation. Our results provide a potential molecular mechanism by which the microbiota-driven GSDMD activation contributes to colitis pathogenesis.
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Affiliation(s)
- Hanchao Gao
- Department of Medical Laboratory, Shenzhen Longhua District Central Hospital, Affiliated Central Hospital of Shenzhen Longhua District, Guangdong Medical University, Shenzhen, China
| | - Mengtao Cao
- Department of Medical Laboratory, Shenzhen Longhua District Central Hospital, Affiliated Central Hospital of Shenzhen Longhua District, Guangdong Medical University, Shenzhen, China
| | - Yikun Yao
- Molecular Development of the Immune System Section, Laboratory of Immune System Biology, and Clinical Genomics Program, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health, Bethesda, MD, United States
| | - Wenjun Hu
- Department of Anesthesiology, 305 Hospital of People’s Liberation Army of China (PLA), Beijing, China
| | - Huimin Sun
- Department of Medical Laboratory, Shenzhen Longhua District Central Hospital, Affiliated Central Hospital of Shenzhen Longhua District, Guangdong Medical University, Shenzhen, China
| | - Yingwei Zhang
- Department of Medical Laboratory, Shenzhen Longhua District Central Hospital, Affiliated Central Hospital of Shenzhen Longhua District, Guangdong Medical University, Shenzhen, China
| | - Changchun Zeng
- Department of Medical Laboratory, Shenzhen Longhua District Central Hospital, Affiliated Central Hospital of Shenzhen Longhua District, Guangdong Medical University, Shenzhen, China
| | - Jia Tang
- National Health Commission (NHC), Key Laboratory of Male Reproduction and Genetics, Guangdong Provincial Reproductive Science Institute (Guangdong Provincial Fertility Hospital), Guangzhou, China
| | - Shaodong Luan
- Department of Medical Laboratory, Shenzhen Longhua District Central Hospital, Affiliated Central Hospital of Shenzhen Longhua District, Guangdong Medical University, Shenzhen, China
| | - Pengfei Chen
- Department of Medical Laboratory, Shenzhen Longhua District Central Hospital, Affiliated Central Hospital of Shenzhen Longhua District, Guangdong Medical University, Shenzhen, China
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Hao W, Hao C, Wu C, Xu Y, Wu S, Lu X, Yang J, Jin C. Aluminum impairs cognitive function by activating DDX3X-NLRP3-mediated pyroptosis signaling pathway. Food Chem Toxicol 2021; 157:112591. [PMID: 34614429 DOI: 10.1016/j.fct.2021.112591] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 09/29/2021] [Accepted: 10/01/2021] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Aluminum is a kind of chemical contaminants in food which can induce neurotoxicity. Aluminum exposure is closely related to neurodegenerative diseases (ND), in which neuroinflammation might involve. However, the molecular mechanism of aluminum-induced neuroinflammation through pyroptosis is not fully clarified yet. MATERIAL AND METHODS The mice model of subacute exposure to aluminum chloride (AlCl3) was established. BV2 microglia cells was treated with AlCl3 in vitro. Resveratrol (Rsv) was adopted as intervention agent. RESULTS Our results showed that aluminum induced cognitive impairment, destroying blood brain barrier (BBB), and causing nerve injury in mice. Meanwhile, aluminum could stimulate nucleotide oligomerization domain-like receptor family pyrin domain containing protein 3 (NLRP3) inflammasome assembly and activate caspase-1 (CASP1), inducing gasdermin D (GSDMD)-mediated pyroptosis signaling, releasing cytokines IL-1β and IL-18, further promoting the activation of glial cells to magnify neuroinflammatory response. Moreover, DEAD-box helicase 3 X-linked (DDX3X) and stress granule RasGAP SH3-domain-binding protein 1 (G3BP1) both participated in neuroinflammation induced by aluminum. When co-treated with Rsv, these injuries were alleviated to some extent. CONCLUSION Aluminum exposure could induce nerve cell pyroptosis and neuroinflammation by DDX3X-NLRP3 inflammasome signaling pathway, which could be rescued via Rsv activating sirtuin 1 (SIRT1).
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Affiliation(s)
- Wudi Hao
- Department of Toxicology, School of Public Health, China Medical University, Shenyang, 110122, PR China
| | - Chenyu Hao
- Department of Toxicology, School of Public Health, China Medical University, Shenyang, 110122, PR China
| | - Chengrong Wu
- Department of Toxicology, School of Public Health, China Medical University, Shenyang, 110122, PR China
| | - Yuqing Xu
- Department of Toxicology, School of Public Health, China Medical University, Shenyang, 110122, PR China
| | - Shengwen Wu
- Department of Toxicology, School of Public Health, China Medical University, Shenyang, 110122, PR China
| | - Xiaobo Lu
- Department of Toxicology, School of Public Health, China Medical University, Shenyang, 110122, PR China
| | - Jinghua Yang
- Department of Toxicology, School of Public Health, China Medical University, Shenyang, 110122, PR China
| | - Cuihong Jin
- Department of Toxicology, School of Public Health, China Medical University, Shenyang, 110122, PR China.
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165
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Sui G, Yang C, Wang L, Xiong X, Guo M, Chen Z, Wang F. Exogenous IGF-1 improves tau pathology and neuronal pyroptosis in high-fat diet mice with cognitive dysfunction. Metab Brain Dis 2021; 36:2079-2088. [PMID: 34269982 DOI: 10.1007/s11011-021-00787-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 07/01/2021] [Indexed: 10/20/2022]
Abstract
Insulin-like growth factor-1 (IGF-1) improves obesity-induced cognitive dysfunction, but its mechanism is not fully clarified. The aim of the study was to reveal whether IGF-1 treated cognitive dysfunction by improving tau pathology and neuronal pyroptosis in high-fat diet mice. During in vitro experiment, C57BL/6J mice were fed with high-fat diet, and were treated with PEG-IGF-1, IGF-1 receptor blocker AXL1717, HO-1 blocker Znpp IX or their combinations. Cognitive function was evaluated using Morris water maze. Expression of Nrf2, HO-1, p-tau, NLRP3, caspase-1 and IL-1β in hippocampus was determined using western blotting. Pyroptosis rate in hippocampus was measured using flow cytometry. During in vivo experiment, HN-h cells were treated with palmitic acid, pyroptosis blocker nonecrosulfonamide or their combinations. The expression of the proteins and rate of pyroptosis were also measured using western blotting and flow cytometry. During in vitro experiment, high-fat diet mice showed cognitive dysfunction, significant hyperphosphorylation of tau protein and neuronal pyroptosis in hippocampus compared with the sham mice. After exogenous IGF-1 treatment, these abnormalities were reversed and Nrf2/HO-1 signaling pathway was activated. Inhibition of the signaling pathway using AXL1717 or Znpp IX re-deteriorated cognitive function, tau pathology and neuronal pyroptosis in hippocampus. During in vivo experiment, inhibition of pyroptosis using nonecrosulfonamide improved tau pathology in palmitic acid-treated HN-h cells. Exogenous IGF-1 improved tau pathology induced by high-fat diet through inhibition of neuronal pyroptosis and activation of Nrf2/HO-1 signaling pathway.
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Affiliation(s)
- Guanghong Sui
- Department of Child and Adolescent Psychology, Tianjin Anding Hospital, Tianjin, 300074, China
| | - Caixia Yang
- Department of Rehabilitation, Tianjin Anding Hospital, Tianjin, 300074, China
| | - Lu Wang
- Department of Geriatrics, Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, No. 154, Anshan Road, Heping District, Tianjin, 300052, China
| | - Xiangyang Xiong
- Department of Geriatrics, Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, No. 154, Anshan Road, Heping District, Tianjin, 300052, China
| | - Mengtian Guo
- Department of Geriatrics, Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, No. 154, Anshan Road, Heping District, Tianjin, 300052, China
| | - Zheng Chen
- Department of Psychology, Tianjin Anding Hospital, No. 13, Liulin Road, Hexi District, Tianjin, 300074, China.
| | - Feng Wang
- Department of Geriatrics, Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, No. 154, Anshan Road, Heping District, Tianjin, 300052, China.
- Department of Psychology, Tianjin Anding Hospital, No. 13, Liulin Road, Hexi District, Tianjin, 300074, China.
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166
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Li T, Zheng G, Li B, Tang L. Pyroptosis: A promising therapeutic target for noninfectious diseases. Cell Prolif 2021; 54:e13137. [PMID: 34590363 PMCID: PMC8560609 DOI: 10.1111/cpr.13137] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 09/09/2021] [Accepted: 09/20/2021] [Indexed: 12/11/2022] Open
Abstract
Pyroptosis, which is characterized by gasdermin family protein-mediated pore formation, cellular lysis and the release of pro-inflammatory cytokines, is a form of programmed cell death associated with intracellular pathogens-induced infection. However, emerging evidence indicates that pyroptosis also contributes to sterile inflammation. In this review, we will first illustrate the biological process of pyroptosis. Then, we will focus on the pathogenic effects of pyroptosis on multiple noninfectious disorders. At last, we will characterize several specific pyroptotic inhibitors targeting the pyroptotic signalling pathway. These data demonstrate that pyroptosis plays a prominent role in sterile diseases, thereby providing a promising approach to the treatment of noninfective inflammatory disorders.
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Affiliation(s)
- Tong Li
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Pharmacology of Traditional Chinese Medicine, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Pharmacy, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Guangjuan Zheng
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Pharmacology of Traditional Chinese Medicine, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Pathology, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Ben Li
- Department of Pharmacy, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Lipeng Tang
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Pharmacology of Traditional Chinese Medicine, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China
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167
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Banerjee S, Huang Z, Wang Z, Nakashima A, Saito S, Sharma S, Cheng S. Etiological Value of Sterile Inflammation in Preeclampsia: Is It a Non-Infectious Pregnancy Complication? Front Cell Infect Microbiol 2021; 11:694298. [PMID: 34485175 PMCID: PMC8415471 DOI: 10.3389/fcimb.2021.694298] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 07/30/2021] [Indexed: 12/25/2022] Open
Abstract
Understanding of sterile inflammation and its associated biological triggers and diseases is still at the elementary stage. This becomes more warranted in cases where infections are not associated with the pathology. Detrimental effects of bacterial and viral infections on the immune responses at the maternal-fetal interface as well as pregnancy outcomes have been well documented. However, an infection-induced etiology is not thought to be a major contributing component to severe pregnancy complications such as preeclampsia (PE) and gestational diabetes. How is then an inflammatory signal thought to be associated with these pregnancy complications? It is not clear what type of inflammation is involved in the onset of PE-like features. We opine that sterile inflammation regulated by the inflammasome-gasdermins-caspase-1 axis is a contributory factor to the onset of PE. We hypothesize that increased production and release of damage-associated molecular patterns (DAMPs) or Alarmins such as high-mobility group box1 (HMGB1), cell-free fetal DNA, uric acid, the NOD-like receptor pyrin-containing receptor 3 (NLRP3) inflammasome, IL-1β and IL-18 occur in the PE placenta. Some of these molecules have already been observed in the placenta from women with PE. Mechanistically, emerging evidence has demonstrated that excessive placental endoplasmic reticulum (ER) stress, impaired autophagy and gasdermine D (GSDMD)-mediated intrinsic pyroptosis are key events that contribute to systemic sterile inflammation in patients with PE, especially early-onset PE (e-PE). In this review, we highlight the advances on the roles of sterile inflammation and inflammatory signaling cascades involving ER stress, autophagy deficiency and pyroptosis in PE pathophysiology. Deciphering the mechanisms underlying these inflammatory pathways may provide potential diagnostic biomarkers and facilitate the development of therapeutic strategies to treat this devastating disease.
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Affiliation(s)
- Sayani Banerjee
- Department of Pediatrics, Women and Infants Hospital-Warren Alpert Medical School of Brown University, Providence, RI, United States
| | - Zheping Huang
- Department of Pediatrics, Women and Infants Hospital-Warren Alpert Medical School of Brown University, Providence, RI, United States
| | - Zhengke Wang
- Department of Pediatrics, Women and Infants Hospital-Warren Alpert Medical School of Brown University, Providence, RI, United States
| | - Akitoshi Nakashima
- Department of Obstetrics and Gynecology, University of Toyama, Toyama, Japan
| | - Shigeru Saito
- Department of Obstetrics and Gynecology, University of Toyama, Toyama, Japan
| | - Surendra Sharma
- Department of Pediatrics, Women and Infants Hospital-Warren Alpert Medical School of Brown University, Providence, RI, United States
| | - Shibin Cheng
- Department of Pediatrics, Women and Infants Hospital-Warren Alpert Medical School of Brown University, Providence, RI, United States
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Li Z, Wang Q, Hu H, Zheng W, Gao C. Research advances of biomaterials-based microenvironment-regulation therapies for repair and regeneration of spinal cord injury. Biomed Mater 2021; 16. [PMID: 34384071 DOI: 10.1088/1748-605x/ac1d3c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Accepted: 08/12/2021] [Indexed: 12/15/2022]
Abstract
Traumatic spinal cord injury (SCI) usually results in restricted behaviour recovery and even life-changing paralysis, accompanied with numerous complications. Pathologically, the initial injuries trigger a series of secondary injuries, leading to an expansion of lesion site, a mass of neuron loss, and eventual failure of endogenous axon regeneration. As the advances rapidly spring up in regenerative medicine and tissue engineering biomaterials, regulation of these secondary injuries becomes possible, shedding a light on normal functional restoration. The successful tissue regeneration lies in proper regulation of the inflammatory microenvironment, including the inflammatory immune cells and inflammatory factors that lead to oxidative stress, inhibitory glial scar and neuroexcitatory toxicity. Specifically, the approaches based on microenvironment-regulating biomaterials have shown great promise in the repair and regeneration of SCI. In this review, the pathological inflammatory microenvironments of SCI are discussed, followed by the introduction of microenvironment-regulating biomaterials in terms of their impressive therapeutic effect in attenuation of secondary inflammation and promotion of axon regrowth. With the emphasis on regulating secondary events, the biomaterials for SCI treatment will become promising for clinical applications.
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Affiliation(s)
- Ziming Li
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, People's Republic of China
| | - Qiaoxuan Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, People's Republic of China
| | - Haijun Hu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, People's Republic of China
| | - Weiwei Zheng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, People's Republic of China
| | - Changyou Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, People's Republic of China.,Dr Li Dak Sum and Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Hangzhou, People's Republic of China
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Hsu SK, Li CY, Lin IL, Syue WJ, Chen YF, Cheng KC, Teng YN, Lin YH, Yen CH, Chiu CC. Inflammation-related pyroptosis, a novel programmed cell death pathway, and its crosstalk with immune therapy in cancer treatment. Theranostics 2021; 11:8813-8835. [PMID: 34522213 PMCID: PMC8419056 DOI: 10.7150/thno.62521] [Citation(s) in RCA: 199] [Impact Index Per Article: 66.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 07/12/2021] [Indexed: 12/12/2022] Open
Abstract
In recent decades, chemotherapies targeting apoptosis have emerged and demonstrated remarkable achievements. However, emerging evidence has shown that chemoresistance is mediated by impairing or bypassing apoptotic cell death. Several novel types of programmed cell death, such as ferroptosis, necroptosis, and pyroptosis, have recently been reported to play significant roles in the modulation of cancer progression and are considered a promising strategy for cancer treatment. Thus, the switch between apoptosis and pyroptosis is also discussed. Cancer immunotherapy has gained increasing attention due to breakthroughs in immune checkpoint inhibitors; moreover, ferroptosis, necroptosis, and pyroptosis are highly correlated with the modulation of immunity in the tumor microenvironment. Compared with necroptosis and ferroptosis, pyroptosis is the primary mechanism for host defense and is crucial for bridging innate and adaptive immunity. Furthermore, recent evidence has demonstrated that pyroptosis exerts benefits on cancer immunotherapies, including immune checkpoint inhibitors (ICIs) and chimeric antigen receptor T-cell therapy (CAR-T). Hence, in this review, we elucidate the role of pyroptosis in cancer progression and the modulation of immunity. We also summarize the potential small molecules and nanomaterials that target pyroptotic cell death mechanisms and their therapeutic effects on cancer.
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Affiliation(s)
- Sheng-Kai Hsu
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Chia-Yang Li
- Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - I-Ling Lin
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Wun-Jyun Syue
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Yih-Fung Chen
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Kai-Chun Cheng
- Department of Ophthalmology, Kaohsiung Municipal Hsiaokang Hospital, Kaohsiung 812, Taiwan
- Department of Ophthalmology, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
| | - Yen-Ni Teng
- Department of Biological Sciences and Technology, National University of Tainan, Tainan 700, Taiwan
| | - Yi-Hsiung Lin
- Division of Cardiology, Department of Internal Medicine, Kaohsiung Medical University Hospital
- Center for Lipid Biosciences, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- Lipid Science and Aging Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chia-Hung Yen
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Chien-Chih Chiu
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Biological Sciences, National Sun Yat-sen University, Kaohsiung 804, Taiwan
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
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170
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Jing X, Yao Y, Wu D, Hong H, Feng X, Xu N, Liu Y, Liang H. IFP35 family proteins promote neuroinflammation and multiple sclerosis. Proc Natl Acad Sci U S A 2021; 118:e2102642118. [PMID: 34362845 PMCID: PMC8364186 DOI: 10.1073/pnas.2102642118] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Excessive activation of T cells and microglia represents a hallmark of the pathogenesis of human multiple sclerosis (MS). However, the regulatory molecules overactivating these immune cells remain to be identified. Previously, we reported that extracellular IFP35 family proteins, including IFP35 and NMI, activated macrophages as proinflammatory molecules in the periphery. Here, we investigated their functions in the process of neuroinflammation both in the central nervous system (CNS) and the periphery. Our analysis of clinical transcriptomic data showed that expression of IFP35 family proteins was up-regulated in patients with MS. Additional in vitro studies demonstrated that IFP35 and NMI were released by multiple cells. IFP35 and NMI subsequently triggered nuclear factor kappa B-dependent activation of microglia via the TLR4 pathway. Importantly, we showed that both IFP35 and NMI activated dendritic cells and promoted naïve T cell differentiation into Th1 and Th17 cells. Nmi-/- , Ifp35-/- , or administration of neutralizing antibodies against IFP35 alleviated the immune cells' infiltration and demyelination in the CNS, thus reducing the severity of experimental autoimmune encephalomyelitis. Together, our findings reveal a hitherto unknown mechanism by which IFP35 family proteins facilitate overactivation of both T cells and microglia and propose avenues to study the pathogenesis of MS.
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MESH Headings
- Animals
- Antibodies, Neutralizing/pharmacology
- Case-Control Studies
- Dendritic Cells/immunology
- Disease Models, Animal
- Encephalomyelitis, Autoimmune, Experimental/drug therapy
- Encephalomyelitis, Autoimmune, Experimental/etiology
- Encephalomyelitis, Autoimmune, Experimental/pathology
- Humans
- Intracellular Signaling Peptides and Proteins/blood
- Intracellular Signaling Peptides and Proteins/genetics
- Intracellular Signaling Peptides and Proteins/immunology
- Intracellular Signaling Peptides and Proteins/metabolism
- Lysophosphatidylcholines/toxicity
- Mice, Inbred C57BL
- Mice, Mutant Strains
- Microglia/metabolism
- Microglia/pathology
- Multiple Sclerosis/genetics
- Multiple Sclerosis/pathology
- Neuroinflammatory Diseases/genetics
- Neuroinflammatory Diseases/pathology
- Th17 Cells/immunology
- Th17 Cells/metabolism
- Mice
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Affiliation(s)
- Xizhong Jing
- School of Medicine, Sun Yat-sen University, Shenzhen 518107, China
| | - Yongjie Yao
- School of Medicine, Sun Yat-sen University, Shenzhen 518107, China
| | - Danning Wu
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - Hao Hong
- School of Medicine, Sun Yat-sen University, Shenzhen 518107, China
| | - Xu Feng
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - Na Xu
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - Yingfang Liu
- School of Medicine, Sun Yat-sen University, Shenzhen 518107, China;
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510275, China
| | - Huanhuan Liang
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China;
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171
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He J, Liu T, Li Y, Mi X, Han D, Yang N, Chen L, Li Y, Hong J, Kuang C, Yuan Y, Cao Y, Han Y, Shi C, Li Z, Guo X. JNK inhibition alleviates delayed neurocognitive recovery after surgery by limiting microglia pyroptosis. Int Immunopharmacol 2021; 99:107962. [PMID: 34298396 DOI: 10.1016/j.intimp.2021.107962] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 06/24/2021] [Accepted: 07/04/2021] [Indexed: 10/20/2022]
Abstract
Delayed neurocognitive recovery (dNCR) is a prevalent complication after surgery in older adults. Neuroinflammation plays a pivotal role in the pathogenesis of dNCR. Recently,compelling evidence suggests that theinvolvement of microglia pyroptosis in the regulation of neuroinflammation in neurologicaldiseases. Nevertheless, the exact role of microglia pyroptosis in dNCR remains elusive. In the study, in vitro and in vivo models of dNCR were used to examine the potential effects of the mitogen‑activated protein kinase signaling pathway on Nod-like receptor protein 3 (NLRP3) inflammasome-mediated microglia pyroptosis and cognitive deficits following surgery. In vivo, we observed surgery-induced upregulation of phosphorylated (p)-c-Jun N-terminal kinases (JNK) in microglia and subsequently NLRP3 inflammasome activation, pyroptosis, and inflammatory cytokines release in mice hippocampus. Interestingly, JNK inhibitor SP600125 significantly attenuated surgery-induced cognitive impairments through inhibiting pyroptosis, inflammatory responses, and reducing immunoreactivity of NLRP3 and gasdermin D N terminus (GSDMD-N) in hippocampal microglia. In vitro, NLRP3 inflammasome- and pyroptosis-associated proteins and immunoreactivity of NLRP3, GSDMD-N, and interleukin-1β were activated in BV2 microglial cells following lipopolysaccharide (LPS) stimulation. These effects were significantly suppressed in BV2 cells by SP600125 treatment. Furthermore, treatment with NLRP3 specific inhibitor, MCC950, attenuated microglia pyroptosis induced by LPS, but did not rescue LPS-induced increased expression of p-JNK. These results indicate that the JNK pathway is largely upstream of the NLRP3 inflammasome, which exerts a crucial regulatory impact on microglia pyroptosis and inflammatory responses, thus providing a promising avenue to prevent dNCR.
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Affiliation(s)
- Jindan He
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Taotao Liu
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Yue Li
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Xinning Mi
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Dengyang Han
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Ning Yang
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Lei Chen
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Yitong Li
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Jingshu Hong
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Chongshen Kuang
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Yi Yuan
- Department of Anesthesiology, Beijing Jishuitan Hospital, Beijing 100035, China
| | - Yiyun Cao
- Department of Anesthesiology, Shanghai Sixth People's Hospital East Affiliated with Shanghai University of Medicine and Health Sciences, Shanghai 200233, China
| | - Yongzheng Han
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Chengmei Shi
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Zhengqian Li
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China.
| | - Xiangyang Guo
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China.
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172
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Zhao M, Dai Y, Li P, Wang J, Ma T, Xu S. Inhibition of NLRP3 inflammasome activation and pyroptosis with the ethyl acetate fraction of Bungeanum ameliorated cognitive dysfunction in aged mice. Food Funct 2021; 12:10443-10458. [PMID: 34231604 DOI: 10.1039/d1fo00876e] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Zanthoxylum bungeanum Maxim (Rutaceae), a medicinal herb and foodstuff, has previously been demonstrated as useful for the potential prevention of age-related cognitive dysfunction. However, the mechanisms and material basis remain elusively understood. The prevention of cognitive impairment by four fractions of Z. bungeanum was evaluated in d-galactose-induced aging mice, including petroleum ether (PE), methylene chloride (DCM), ethyl acetate (EA), and n-butanol (N-BAI). The results showed that mice treated with EA and N-BAI had significantly alleviated d-galactose-induced memory deficit. In addition, EA could clearly protect neurons from cell death, alleviate oxidative damage and inhibit the activation of microglia in aging mice. Our data also showed that the activation of the NLRP3 inflammasome, the expression of pyroptosis-related proteins, and the release of IL-1β and IL-18 could be remarkably inhibited by the EA fraction in aging mice and LPS/ATP-induced BV-2 microglial cells. Besides, the chemical composition of an active EA fraction was qualitatively analyzed by using HPLC-MS/MS. Thirty-four compounds were tentatively identified based on their retention times, accurate mass, and MS/MS spectra. Moreover, eighteen reference compounds were analyzed by HPLC-MS/MS and their contents of EA were determined. The work demonstrated that the ethyl acetate fraction of Bungeanum ameliorated cognitive deficits, and its effects may be related to ameliorating oxidative stress and suppressing the NLRP3 inflammasome pathway and GSDMD-mediated pyroptosis in aging mice.
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Affiliation(s)
- Meihuan Zhao
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China. and Institute of Material Medica Integration and Transformation for Brain Disorders, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China
| | - Yuan Dai
- Institute of Material Medica Integration and Transformation for Brain Disorders, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China and School of Health Preservation and Rehabilitation, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, PR China
| | - Ping Li
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China. and Institute of Material Medica Integration and Transformation for Brain Disorders, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China
| | - Jie Wang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China. and Institute of Material Medica Integration and Transformation for Brain Disorders, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China
| | - Tengyun Ma
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China. and Institute of Material Medica Integration and Transformation for Brain Disorders, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China
| | - Shijun Xu
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China. and Institute of Material Medica Integration and Transformation for Brain Disorders, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China
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173
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Gong K, Chen Y, Liu W, Wang Z. Global research trends of Apolipoprotein E in central nervous system: A scientometric analysis. Int Immunopharmacol 2021; 98:107919. [PMID: 34217139 DOI: 10.1016/j.intimp.2021.107919] [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: 04/08/2021] [Revised: 05/25/2021] [Accepted: 06/21/2021] [Indexed: 10/21/2022]
Abstract
Apolipoprotein E (apoE, protein; APOE, gene) involves in cholesterol recycling and redistribution by mediating lipoprotein pathways unique to central nervous system (CNS), which is a potential therapeutic target for diseases. We visually analyzed the research hotspots of APOE related to CNS in this work, by scientometric analysis from the Web of Science Core Collection (WOSCC) database over the past two decades. A total of 25,719 references of "APOE" and 836 references of "APOE in CNS" were retrieved from the WOSCC on October 26, 2020, and then VOSviewer 1.6.15, Citespace 5.7.R2 were used for visual analysis. Over the last two decades, the research on the field of APOE in CNS is not faddish. Although many funds, organizations, and scholars were affiliated in this field, organizations and scholars, especially the top teams in this field, still lacked close cooperation with other teams around the world. Few articles with high citations had been published in the last decade, but recent studies still lacked scale and breakthrough, and the keywords associated with APOE appeared more outdated. However, the current researches have not fully elucidated the crosstalk between APOE and neuroinflammation in CNS, some new ideas may rekindle the research enthusiasm of scholars. Although the field of APOE in CNS appeared more outdated. Based on keyword analysis, we hypothesized new ideas for further investigation of neuroinflammation would light the interest of APOE in CNS for the scholars. The crosstalk between ApoE and inflammasome may be the focus of future researches. How APOE modulates the time course or intensity of the inflammasome activation, inflammatory response (proinflammatory or anti-inflammatory), and pathological process of CNS disease deserves future attention in both basic and clinical studies. More apoE/APOE-targeted pharmacological interventions will be available for preclinical experiments and clinical trials and bring hope for patients with CNS diseases.
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Affiliation(s)
- Kai Gong
- Trauma Center, First Affiliated Hospital of Xiamen University, 55 Zhenhai Rd, Xiamen ,361003, Fujian, China; Department of Neurosurgery, Xiamen Key Laboratory of Brain Center, The First Affiliated Hospital of Xiamen University, 55 Zhenhai Rd, Xiamen ,361003, Fujian, China
| | - Yuhua Chen
- Trauma Center, First Affiliated Hospital of Xiamen University, 55 Zhenhai Rd, Xiamen ,361003, Fujian, China; Department of Neurosurgery, Xiamen Key Laboratory of Brain Center, The First Affiliated Hospital of Xiamen University, 55 Zhenhai Rd, Xiamen ,361003, Fujian, China
| | - Wei Liu
- Trauma Center, First Affiliated Hospital of Xiamen University, 55 Zhenhai Rd, Xiamen ,361003, Fujian, China; Department of Neurosurgery, Xiamen Key Laboratory of Brain Center, The First Affiliated Hospital of Xiamen University, 55 Zhenhai Rd, Xiamen ,361003, Fujian, China.
| | - Zhanxiang Wang
- Trauma Center, First Affiliated Hospital of Xiamen University, 55 Zhenhai Rd, Xiamen ,361003, Fujian, China; Department of Neurosurgery, Xiamen Key Laboratory of Brain Center, The First Affiliated Hospital of Xiamen University, 55 Zhenhai Rd, Xiamen ,361003, Fujian, China.
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174
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Osca-Verdegal R, Beltrán-García J, Pallardó FV, García-Giménez JL. Role of microRNAs As Biomarkers in Sepsis-Associated Encephalopathy. Mol Neurobiol 2021; 58:4682-4693. [PMID: 34160774 PMCID: PMC8220114 DOI: 10.1007/s12035-021-02445-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 06/06/2021] [Indexed: 12/29/2022]
Abstract
Sepsis-associated encephalopathy (SAE) is a neurological complication of sepsis, characterized by brain dysfunction without any direct central nervous system infection. The diagnosis of SAE is currently a challenge. In fact, problems in making a diagnosis of SAE cause a great variability of incidence that can reach up to 70% of all septic patients. Even more, despite SAE is the most frequent type of encephalopathy occurring in critically ill patients, the molecular mechanisms that guide its progression have not been completely elucidated. On the other hand, miRNAs have proven to be excellent biomarkers for both diagnosis and prognosis, especially in brain pathologies because of their small size they can cross the blood–brain barrier easier than other biomolecules. The identification of new miRNAs as biomarkers may help to improve SAE diagnosis and prognosis and also to design new therapies for this clinical manifestation that produces diffuse cerebral dysfunction. This review is focused on SAE physiopathology and the need to have clear criteria for its diagnosis; thus, this work postulates some miRNA candidates to be used for SAE biomarkers because of their role in both, neurological damage and sepsis.
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Affiliation(s)
- Rebeca Osca-Verdegal
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Valencia, Spain
- Departamento de Fisiología, Facultad de Medicina Y Odontología, Universitat de València, València, Spain
| | - Jesús Beltrán-García
- Departamento de Fisiología, Facultad de Medicina Y Odontología, Universitat de València, València, Spain
- Instituto de Investigación Sanitaria INCLIVA, Valencia, Spain
| | - Federico V. Pallardó
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Valencia, Spain
- Departamento de Fisiología, Facultad de Medicina Y Odontología, Universitat de València, València, Spain
- Instituto de Investigación Sanitaria INCLIVA, Valencia, Spain
| | - José Luis García-Giménez
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Valencia, Spain
- Departamento de Fisiología, Facultad de Medicina Y Odontología, Universitat de València, València, Spain
- Instituto de Investigación Sanitaria INCLIVA, Valencia, Spain
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175
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Punicalagin ameliorates collagen-induced arthritis by downregulating M1 macrophage and pyroptosis via NF-κB signaling pathway. SCIENCE CHINA-LIFE SCIENCES 2021; 65:588-603. [PMID: 34125371 DOI: 10.1007/s11427-020-1939-1] [Citation(s) in RCA: 69] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Accepted: 04/22/2021] [Indexed: 02/08/2023]
Abstract
Rheumatoid arthritis (RA) is a chronic inflammatory disease that eventually leads to disability. Inflammatory cell infiltration, severe joint breaking and systemic bone loss are the main clinical symptoms. In this study, we established a collagen-induced arthritis (CIA) model and found a large number of M1 macrophages and pyroptosis, which are important sources of proinflammatory cytokines. Punicalagin (PUN) is an active substance extracted from pomegranate peel. We found that it inhibited joint inflammation, cartilage damage and systemic bone destruction in CIA mice. PUN effectively alleviated the high expression of inflammatory cytokines in synovial tissue in vivo. PUN treatment shifted macrophages from the M1 phenotype to the M2 phenotype after stimulation with lipopolysaccharide (LPS) and interferon (IFN)-γ. The expression of inducible nitric oxide synthase (iNOS) and other proinflammatory cytokines released by M1 macrophages was decreased in the PUN treatment group. However, simultaneously, the expression of markers of anti-inflammatory M2 macrophages, such as arginase (Arg)-1 and interleukin (IL)-10, was increased. In addition, PUN treatment attenuated pyroptosis by downregulating the expression of NLRP3 and caspase-1, thereby preventing inflammatory cell death resulting from the release of IL-1β and IL-18. Mechanistically, PUN inhibited the activation of receptor activators of the nuclear factor-κB (NF-κB) signaling pathway, which contributes to M1 polarization and pyroptosis of macrophages. We concluded that PUN ameliorated pathological inflammation by inhibiting M1 phenotype polarization and pyroptosis and has great potential as a therapeutic treatment for human RA.
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176
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Wang Y, Wang N, Cui L, Li Y, Cao Z, Wu X, Wang Q, Zhang B, Ma C, Cheng Y. Long Non-coding RNA MEG3 Alleviated Ulcerative Colitis Through Upregulating miR-98-5p-Sponged IL-10. Inflammation 2021; 44:1049-1059. [PMID: 33394187 DOI: 10.1007/s10753-020-01400-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 12/02/2020] [Accepted: 12/08/2020] [Indexed: 10/22/2022]
Abstract
Ulcerative colitis (UC) is a refractory chronic colitis disease with the particularly complex cause. Recently, long noncoding RNAs (lncRNAs) have been reported to be related to the development of UC. LncRNA MEG3 has been proved to play an anti-inflammatory role in a variety of inflammatory diseases, which share similar pathogenesis with UC, indicating the potential involvement of lncRNA MEG3 in UC. This study aims to investigate the functional role and underlying mechanism of lncRNA MEG3 in UC. Gradient concentration of H2O2 (0, 20, 50, 100, and 200 μM) was used to induce Caco-2 damage models in vitro. Cell viability was detected by cell counting kit-8 (CCK-8) assay. LncRNA MEG3, miR-98-5p, and IL-10 levels in H2O2-treated Caco-2 cells were assessed by performing real-time quantitative polymerase chain reaction (RT-qPCR). Moreover, the binding relationship between lncRNA MEG3 and miR-98-5p, as well as the binding relationship between miR-98-5p and IL-10, was validated using dual-luciferase reporter assay. 2, 4, 6-Trinitrobenzenesulfonic acid solution (TNBS) was applied to induce ulcerative colitis in young rats. The body weight, disease activity index (DAI), length and weight of the colons, pathological scores of UC rats, reactive oxygen species (ROS), and inflammatory cytokines were determined to evaluate the effects of lncRNA MEG3 on the progression of UC. Besides, hematoxylin-eosin (HE) staining was exploited to observe histological changes of UC rat colons. In addition, western blotting analysis was also performed to evaluate the apoptosis and pyroptosis-related protein levels. Moreover, lncRNA MEG3, miR-98-5p, and IL-10 levels in UC rat colons were further assessed by RT-qPCR. Meanwhile, IL-10 expression was determined using immunohistochemistry. LncRNA MEG3 and IL-10 levels were distinctly decreased while miR-98-5p was increased in Caco-2 damage models and UC rats. Bioinformatics analysis predicted the binding sites of lncRNA MEG3 to miR-98-5p and miR-98-5p to IL-10. Besides, dual-luciferase reporter assay validated the negative correlation between lncRNA MEG3 and miR-98-5p, miR-98-5p, and IL-10. Overexpressed lncRNA MEG3 reduced. DAI scores and colon weight/length ratio improved UC ulceration. In addition, upregulation of lncRNA MEG3 relieved oxidative stress, inflammatory response, apoptosis, and pyroptosis of UC rat colons. LncRNA MEG3 overexpression alleviates the serve ulceration of UC rat colons by upregulating IL-10 expression via sponging miR-98-5p. To sum up, this study reveals the protective role of lncRNA MEG3 in the development of UC and may provide potential therapeutic targets for UC.
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Affiliation(s)
- Yan Wang
- Department of Pediatrics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, No.7, Weiwu Road, Jinshui District, Zhengzhou, 450003, Henan Province, China
| | - Nan Wang
- Department of Pediatrics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, No.7, Weiwu Road, Jinshui District, Zhengzhou, 450003, Henan Province, China
| | - Lianlian Cui
- Department of Pediatrics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, No.7, Weiwu Road, Jinshui District, Zhengzhou, 450003, Henan Province, China
| | - Yan Li
- Department of Pediatrics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, No.7, Weiwu Road, Jinshui District, Zhengzhou, 450003, Henan Province, China
| | - Zhenfeng Cao
- Department of Pediatrics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, No.7, Weiwu Road, Jinshui District, Zhengzhou, 450003, Henan Province, China
| | - Xing Wu
- Department of Pediatrics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, No.7, Weiwu Road, Jinshui District, Zhengzhou, 450003, Henan Province, China
| | - Qianhan Wang
- Department of Pediatrics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, No.7, Weiwu Road, Jinshui District, Zhengzhou, 450003, Henan Province, China
| | - Bo Zhang
- Department of Pediatrics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, No.7, Weiwu Road, Jinshui District, Zhengzhou, 450003, Henan Province, China
| | - Caixia Ma
- Department of Pediatrics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, No.7, Weiwu Road, Jinshui District, Zhengzhou, 450003, Henan Province, China
| | - Yanbo Cheng
- Department of Pediatrics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, No.7, Weiwu Road, Jinshui District, Zhengzhou, 450003, Henan Province, China.
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177
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Cid E, Marquez-Galera A, Valero M, Gal B, Medeiros DC, Navarron CM, Ballesteros-Esteban L, Reig-Viader R, Morales AV, Fernandez-Lamo I, Gomez-Dominguez D, Sato M, Hayashi Y, Bayés À, Barco A, Lopez-Atalaya JP, de la Prida LM. Sublayer- and cell-type-specific neurodegenerative transcriptional trajectories in hippocampal sclerosis. Cell Rep 2021; 35:109229. [PMID: 34107264 DOI: 10.1016/j.celrep.2021.109229] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 03/18/2021] [Accepted: 05/17/2021] [Indexed: 12/20/2022] Open
Abstract
Hippocampal sclerosis, the major neuropathological hallmark of temporal lobe epilepsy, is characterized by different patterns of neuronal loss. The mechanisms of cell-type-specific vulnerability and their progression and histopathological classification remain controversial. Using single-cell electrophysiology in vivo and immediate-early gene expression, we reveal that superficial CA1 pyramidal neurons are overactive in epileptic rodents. Bulk tissue and single-nucleus expression profiling disclose sublayer-specific transcriptomic signatures and robust microglial pro-inflammatory responses. Transcripts regulating neuronal processes such as voltage channels, synaptic signaling, and cell adhesion are deregulated differently by epilepsy across sublayers, whereas neurodegenerative signatures primarily involve superficial cells. Pseudotime analysis of gene expression in single nuclei and in situ validation reveal separated trajectories from health to epilepsy across cell types and identify a subset of superficial cells undergoing a later stage in neurodegeneration. Our findings indicate that sublayer- and cell-type-specific changes associated with selective CA1 neuronal damage contribute to progression of hippocampal sclerosis.
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Affiliation(s)
- Elena Cid
- Instituto Cajal, CSIC, 28002 Madrid, Spain
| | - Angel Marquez-Galera
- Instituto de Neurociencias, Universidad Miguel Hernández-Consejo Superior de Investigaciones Científicas (UMH-CSIC), 03550 Sant Joan d'Alacant, Alicante, Spain
| | | | - Beatriz Gal
- Instituto Cajal, CSIC, 28002 Madrid, Spain; Universidad Europea de Madrid, 28670 Villaviciosa de Odón, Madrid, Spain
| | | | - Carmen M Navarron
- Instituto de Neurociencias, Universidad Miguel Hernández-Consejo Superior de Investigaciones Científicas (UMH-CSIC), 03550 Sant Joan d'Alacant, Alicante, Spain
| | | | - Rita Reig-Viader
- Institut d'Investigació Biomèdica San Pau, 08041 Barcelona, Spain; Universitat Autònoma de Barcelona, 08193 Bellaterra, Cerdanyola del Vallès, Spain
| | | | | | | | - Masaaki Sato
- RIKEN Brain Science Institute, Wako, 351-0198 Saitama, Japan
| | - Yasunori Hayashi
- RIKEN Brain Science Institute, Wako, 351-0198 Saitama, Japan; Department of Pharmacology, Kyoto University Graduate School of Medicine, 606-8501 Kyoto, Japan
| | - Àlex Bayés
- Institut d'Investigació Biomèdica San Pau, 08041 Barcelona, Spain; Universitat Autònoma de Barcelona, 08193 Bellaterra, Cerdanyola del Vallès, Spain
| | - Angel Barco
- Instituto de Neurociencias, Universidad Miguel Hernández-Consejo Superior de Investigaciones Científicas (UMH-CSIC), 03550 Sant Joan d'Alacant, Alicante, Spain
| | - Jose P Lopez-Atalaya
- Instituto de Neurociencias, Universidad Miguel Hernández-Consejo Superior de Investigaciones Científicas (UMH-CSIC), 03550 Sant Joan d'Alacant, Alicante, Spain.
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178
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Wei G, Luo S, Wu W, Hu J, Zhou R. Activation of Interleukin-1 β Release and Pyroptosis by Transmissible Gastroenteritis Virus Is Dependent on the NOD-Like Receptor Protein 3 Inflammasome in Porcine Intestinal Epithelial Cell Line. Viral Immunol 2021; 34:401-409. [PMID: 33973805 DOI: 10.1089/vim.2020.0227] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Transmissible gastroenteritis virus (TGEV) is a coronavirus, which causes fatal severe diarrhea and leads to high mortality in newborn piglets. Inflammasomes are hub molecules that induce proinflammatory cytokine production and maturation to initiate innate immune defenses upon cellular infection. To date, the potential role of inflammasome in TGEV infection in porcine intestinal epithelial cells has not been elucidated. The present study aims to investigate the function of the inflammasome in response to TGEV infection in porcine intestinal epithelial cells. Our results revealed that TGEV infection induced the production of pro-interleukin-1β (pro-IL-1β) and enhanced its processing and maturation in porcine intestinal epithelial cells through caspase-1 activation. In addition, TGEV infection in porcine intestinal epithelial cells induced pyroptosis, indicated by cell death and the production and cleavage of gasdermin D (GSDMD). Meanwhile, TGEV infection sufficiently activated the expression and assembly of the NOD-like receptor protein 3 (NLRP3) inflammasome in porcine intestinal epithelial cells, and inhibition of NLRP3 blocked TGEV-induced IL-1β release. We also found that inhibition of NLRP3 enhanced the replication of TGEV without inducing cell death. In conclusion, these data demonstrated that activation of IL-1β release and pyroptosis is dependent on NLRP3 inflammasome, thus NLRP3 inflammasome may play a central role in the innate immune response to TGEV infection.
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Affiliation(s)
- Guanghe Wei
- College of Veterinary Medicine, Southwest University, Chongqing, P.R. China
| | - Shijin Luo
- College of Veterinary Medicine, Southwest University, Chongqing, P.R. China
| | - Wanyan Wu
- College of Veterinary Medicine, Southwest University, Chongqing, P.R. China
| | - Junye Hu
- College of Veterinary Medicine, Southwest University, Chongqing, P.R. China
| | - Rongqiong Zhou
- College of Veterinary Medicine, Southwest University, Chongqing, P.R. China
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179
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Gou X, Xu D, Li F, Hou K, Fang W, Li Y. Pyroptosis in stroke-new insights into disease mechanisms and therapeutic strategies. J Physiol Biochem 2021; 77:511-529. [PMID: 33942252 DOI: 10.1007/s13105-021-00817-w] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 04/13/2021] [Indexed: 02/07/2023]
Abstract
Stroke is a common disease with high mortality and disability worldwide. Different forms of cell deaths, including apoptosis and necrosis, occur in ischemic or hemorrhagic brain tissue, among which pyroptosis, a newly discovered inflammation-related programmed cell death, is generally divided into two main pathways, the canonical inflammasome pathway and the non-canonical inflammasome pathway. Caspase-mediated pyroptosis requires the assembly of inflammasomes such as NLRP3, which leads to the release of inflammatory cytokines IL-1β and IL-18 through the pores formed in the plasma membrane by GSDMD followed by neuroinflammation. Recently, pyroptosis and its relationship with inflammation have attracted more and more attention in the study of cerebral ischemia or hemorrhage. In addition, many inhibitors of pyroptosis targeting caspase, NLRP3, and the upstream pathway have been found to reduce brain tissue damage after stroke. In this review, we mainly introduce the pathology of stroke, the molecular mechanism, and process of pyroptosis, as well as the pivotal roles of pyroptosis in stroke, in order to provide new insights for the treatment of stroke.
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Affiliation(s)
- Xue Gou
- State Key Laboratory of Natural Medicines, Department of Physiology, China Pharmaceutical University, Nanjing, 210009, China
| | - Dan Xu
- State Key Laboratory of Natural Medicines, Department of Physiology, China Pharmaceutical University, Nanjing, 210009, China
| | - Fengyang Li
- State Key Laboratory of Natural Medicines, Department of Physiology, China Pharmaceutical University, Nanjing, 210009, China
| | - Kai Hou
- State Key Laboratory of Natural Medicines, Department of Physiology, China Pharmaceutical University, Nanjing, 210009, China.,Department of Pharmacy, Zhongda Hospital, Southeast University, Nanjing, China
| | - Weirong Fang
- State Key Laboratory of Natural Medicines, Department of Physiology, China Pharmaceutical University, Nanjing, 210009, China.
| | - Yunman Li
- State Key Laboratory of Natural Medicines, Department of Physiology, China Pharmaceutical University, Nanjing, 210009, China.
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180
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Wang J, Yao J, Liu Y, Huang L. Targeting the gasdermin D as a strategy for ischemic stroke therapy. Biochem Pharmacol 2021; 188:114585. [PMID: 33930348 DOI: 10.1016/j.bcp.2021.114585] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 04/20/2021] [Accepted: 04/23/2021] [Indexed: 02/07/2023]
Abstract
Stroke is a major cause of death and disability worldwide that triggers a variety of neuropathological conditions, leading to the initiation of several pro-inflammatory mediators and neuronal damage. Neuroinflammation has been considered the potential therapeutic target and contributes to the pathology of ischemia and reperfusion. Pyroptosis is an inflammatory form of programmed cell death that plays an important role in immune protection against stroke. Gasdermin D (GSDMD) is the final executor of pyroptosis upon cleavage by caspases-1/4/5/11, followed by canonical and noncanonical inflammasome activation, leading to a series of inflammatory responses. GSDMD N-terminal domain assembles plasma membrane as well as organelle membrane pores to induce cytolysis, thereby triggering cytokine release and inflammatory-related cell death. In our review, we concisely summarized and highlighted the potential role of GSDMD-regulated pyroptosis and the biological characteristic of GSDMD as a therapeutic target in ischemic stroke. A better understanding of the roles of GSDMD may provide a theoretical basis for the design of novel therapeutic interventions for the treatment of ischemic stroke.
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Affiliation(s)
- Jiabing Wang
- Municipal Hospital Affiliated to Medical School of Taizhou University, Taizhou 318000, China.
| | - Jiali Yao
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Yugang Liu
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Lili Huang
- Lihuili Hospital Affiliated to Ningbo University, Ningbo, Zhejiang 315100, China
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181
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A surfactant polymer wound dressing protects human keratinocytes from inducible necroptosis. Sci Rep 2021; 11:4357. [PMID: 33623080 PMCID: PMC7902632 DOI: 10.1038/s41598-021-82260-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 10/27/2020] [Indexed: 02/07/2023] Open
Abstract
Chronic wounds show necroptosis from which keratinocytes must be protected to enable appropriate wound re-epithelialization and closure. Poloxamers, a class of synthetic triblock copolymers, are known to be effective against plasma membrane damage (PMD). The purpose of this study is to evaluate the efficacy of a specific poloxamer, surfactant polymer dressing (SPD), which is currently used clinically as wound care dressing, against PMD in keratinocytes. Triton X-100 (TX100) at sub-lytic concentrations caused PMD as demonstrated by the efflux of calcein and by the influx of propidium iodide and FM1-43. TX100, an inducer of necroptosis, led to mitochondrial fragmentation, depletion of nuclear HMGB1, and activation of signaling complex associated with necroptosis (i.e., activation of RIP3 and phosphorylation of MLKL). All responses following exposure of human keratinocytes to TX100 were attenuated by pre- or co-treatment with SPD (100 mg/ml). The activation and translocation of phospho-MLKL to the plasma membrane, taken together with depletion of nuclear HMGB1, characterized the observed cell death as necroptosis. Thus, our findings show that TX100-induced plasma membrane damage and death by necroptosis were both attenuated by SPD, allowing keratinocyte survival. The significance of such protective effects of SPD on keratinocytes in wound re-epithelialization and closure warrant further studies.
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182
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Nadeem S, Yang C, Du Y, Li F, Chen Z, Zhou Y, Lee JY, Ding Q, Ling D. A Virus-Spike Tumor-Activatable Pyroptotic Agent. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2006599. [PMID: 33522150 DOI: 10.1002/smll.202006599] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 12/24/2020] [Indexed: 06/12/2023]
Abstract
Invoking the occurrence of pyroptosis is an emerging strategy for the treatment of cancer. However, the practical applications of pyroptosis for cancer therapy are currently hindered due to the lack of tumor-specific and efficient pyroptotic agents in vivo. Herein, a virus-spike tumor-activatable pyroptotic agent (VTPA) for cancer-specific therapy is reported. The VTPA is composed of an organosilica coated iron oxide nanoparticle core and spiky manganese dioxide protrusions, which can readily accumulate in tumor after systemic administration, facilitate the tumor intracellular lysosomal rupture, and be degraded by tumor over-expressed intracellular glutathione (GSH) to release Mn ions and iron oxide nanoparticles (IONPs) for the synergetic activation of nucleotide binding oligomerization domain-like receptors protein 3 (NLRP3) inflammasomes. Consequently, the activation of NLRP3 inflammasomes and the release of lactate dehydrogenase of tumor cells are observed after the treatment of VTPA, resulting in a specific pyroptotic cell death. To our best knowledge, the structure-dependent and tumor intracellular GSH activatable pyroptotic agents represent the first demonstration of cancer-specific pyroptosis in vivo, providing a novel paradigm for the development of next-generation cancer-specific pyroptotic nanomedicine.
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Affiliation(s)
- Sadia Nadeem
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, P. R. China
| | - Chuang Yang
- Jiangsu Breast Disease Center, The First Affiliated Hospital with Nanjing Medical University, Nanjing, Jiangsu, 210029, P. R. China
| | - Yang Du
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, P. R. China
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, P. R. China
| | - Fangyuan Li
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, P. R. China
- Hangzhou Institute of Innovative Medicine, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Zheng Chen
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, P. R. China
| | - Yan Zhou
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, P. R. China
| | - Ji Young Lee
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, P. R. China
| | - Qiang Ding
- Jiangsu Breast Disease Center, The First Affiliated Hospital with Nanjing Medical University, Nanjing, Jiangsu, 210029, P. R. China
| | - Daishun Ling
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, P. R. China
- Hangzhou Institute of Innovative Medicine, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
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183
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Al Mamun A, Wu Y, Monalisa I, Jia C, Zhou K, Munir F, Xiao J. Role of pyroptosis in spinal cord injury and its therapeutic implications. J Adv Res 2021; 28:97-109. [PMID: 33364048 PMCID: PMC7753222 DOI: 10.1016/j.jare.2020.08.004] [Citation(s) in RCA: 101] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 08/05/2020] [Accepted: 08/08/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Currently, spinal cord injury (SCI) is a pathological incident that triggers several neuropathological conditions, leading to the initiation of neuronal damage with several pro-inflammatory mediators' release. However, pyroptosis is recognized as a new programmed cell death mechanism regulated by the stimulation of caspase-1 and/or caspase-11/-4/-5 signaling pathways with a series of inflammatory responses. AIM Our current review concisely summarizes the potential role of pyroptosis-regulated programmed cell death in SCI, according to several molecular and pathophysiological mechanisms. This review also highlights the targeting of pyroptosis signaling pathways and inflammasome components and its therapeutic implications for the treatment of SCI. KEY SCIENTIFIC CONCEPTS Multiple pieces of evidence have illustrated that pyroptosis plays significant roles in cell swelling, plasma membrane lysis, chromatin fragmentation and intracellular pro-inflammatory factors including IL-18 and IL-1β release. In addition, pyroptosis is directly mediated by the recently discovered family of pore-forming protein known as GSDMD. Current investigations have documented that pyroptosis-regulated cell death plays a critical role in the pathogenesis of multiple neurological disorders as well as SCI. Our narrative article suggests that inhibiting the pyroptosis-regulated cell death and inflammasome components could be a promising therapeutic approach for the treatment of SCI in the near future.
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Key Words
- AIM2, Absent in melanoma 2
- ASC, apoptosis-associated speck-like protein
- ATP, Adenosine triphosphate
- BBG, Brilliant blue G
- CCK-8, Cell Counting Kit-8
- CNS, central nervous system
- CO, Carbon monoxide
- CORM-3, Carbon monoxide releasing molecle-3
- Caspase-1
- Cx43, Connexin 43
- DAMPs, Damage-associated molecular patterns
- DRD1, Dopamine Receptor D1
- ECH, Echinacoside
- GSDMD, Gasdermin D
- Gal-3, Galectin-3
- H2O2, Hydrogen peroxide
- HO-1, Heme oxygenase-1
- IL-18, Interleukin-18
- IL-1β, Interleukin-1 beta
- IRE1, Inositol requiring enzyme 1
- JOA, Japanese orthopedics association
- LPS, Lipopolysaccharide
- NDI, Neck data index
- NF-κB, Nuclear factor-kappa B
- NLRP1, NOD-like receptor protein 1
- NLRP1b, NOD-like receptor protein 1b
- NLRP3
- NLRP3, Nucleotide-binding domain-like receptor protein 3
- Neuroinflammation
- Nrf2, Nuclear factor erythroid 2-related factor 2
- OPCs, Oligodendrocyte progenitor cells
- PAMPs, Pathogen-associated molecular patterns
- PRRs, Pattern recognition receptors
- Pyroptosis
- ROS, Reactive oxygen species
- Spinal cord injury
- TLR4, Toll-like receptor 4
- TXNIP, Thioredoxin-interacting protein
- Therapeutic implications
- double stranded DNAIR, Ischemia reperfusion
- si-RNA, Small interfering RNA
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Affiliation(s)
- Abdullah Al Mamun
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035 Zhejiang Province, China
| | - Yanqing Wu
- Institute of Life Sciences, Wenzhou University, Wenzhou, 325035 Zhejiang Province, China
| | - Ilma Monalisa
- Department of Pharmacy, Southeast University, Banani, Dhaka 1213, Bangladesh
| | - Chang Jia
- Pediatric Research Institute, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027 Zhejiang Province, China
| | - Kailiang Zhou
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027 Zhejiang Province, China
| | - Fahad Munir
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang Province, China
| | - Jian Xiao
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035 Zhejiang Province, China
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184
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Klegeris A. Regulation of neuroimmune processes by damage- and resolution-associated molecular patterns. Neural Regen Res 2021; 16:423-429. [PMID: 32985460 PMCID: PMC7996015 DOI: 10.4103/1673-5374.293134] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Sterile inflammatory processes are essential for the maintenance of central nervous system homeostasis, but they also contribute to various neurological disorders, including neurotrauma, stroke, and demyelinating or neurodegenerative diseases. Immune mechanisms in the central nervous system and periphery are regulated by a diverse group of endogenous proteins, which can be broadly divided into the pro-inflammatory damage-associated molecular patterns (DAMPs) and anti-inflammatory resolution-associated molecular patterns (RAMPs), even though there is notable overlap between the DAMP- and RAMP-like activities for some of these molecules. Both groups of molecular patterns were initially described in peripheral immune processes and pathologies; however, it is now evident that at least some, if not all, of these immunomodulators also regulate neuroimmune processes and contribute to neuroinflammation in diverse central nervous system disorders. The review of recent literature demonstrates that studies on DAMPs and RAMPs of the central nervous system still lag behind the much broader research effort focused on their peripheral counterparts. Nevertheless, this review also reveals that over the last five years, significant advances have been made in our understanding of the neuroimmune functions of several well-established DAMPs, including high-mobility group box 1 protein and interleukin 33. Novel neuroimmune functions have been demonstrated for other DAMPs that previously were considered almost exclusively as peripheral immune regulators; they include mitochondrial transcription factor A and cytochrome C. RAMPs of the central nervous system are an emerging area of neuroimmunology with very high translational potential since some of these molecules have already been used in preclinical and clinical studies as candidate therapeutic agents for inflammatory conditions, such as multiple sclerosis and rheumatoid arthritis. The therapeutic potential of DAMP antagonists and neutralizing antibodies in central nervous system neuroinflammatory diseases is also supported by several of the identified studies. It can be concluded that further studies of DAMPs and RAMPs of the central nervous system will continue to be an important and productive field of neuroimmunology.
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Affiliation(s)
- Andis Klegeris
- Department of Biology, University of British Columbia Okanagan Campus, Kelowna, BC, Canada
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185
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Van Zeller M, Dias D, Sebastião AM, Valente CA. NLRP3 Inflammasome: A Starring Role in Amyloid-β- and Tau-Driven Pathological Events in Alzheimer's Disease. J Alzheimers Dis 2021; 83:939-961. [PMID: 34366341 PMCID: PMC8543248 DOI: 10.3233/jad-210268] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/07/2021] [Indexed: 12/14/2022]
Abstract
Alzheimer's disease (AD) is the most prevalent neurodegenerative disease commonly diagnosed among the elderly population. AD is characterized by the loss of synaptic connections, neuronal death, and progressive cognitive impairment, attributed to the extracellular accumulation of senile plaques, composed by insoluble aggregates of amyloid-β (Aβ) peptides, and to the intraneuronal formation of neurofibrillary tangles shaped by hyperphosphorylated filaments of the microtubule-associated protein tau. However, evidence showed that chronic inflammatory responses, with long-lasting exacerbated release of proinflammatory cytokines by reactive glial cells, contribute to the pathophysiology of the disease. NLRP3 inflammasome (NLRP3), a cytosolic multiprotein complex sensor of a wide range of stimuli, was implicated in multiple neurological diseases, including AD. Herein, we review the most recent findings regarding the involvement of NLRP3 in the pathogenesis of AD. We address the mechanisms of NLRP3 priming and activation in glial cells by Aβ species and the potential role of neurofibrillary tangles and extracellular vesicles in disease progression. Neuronal death by NLRP3-mediated pyroptosis, driven by the interneuronal tau propagation, is also discussed. We present considerable evidence to claim that NLRP3 inhibition, is undoubtfully a potential therapeutic strategy for AD.
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Affiliation(s)
- Mariana Van Zeller
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - Diogo Dias
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - Ana M. Sebastião
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - Cláudia A. Valente
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
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186
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Abstract
In a recent issue of Nature, Lammert et al. demonstrate that DNA damage drives AIM2-mediated pyroptosis during normal brain development, preventing anxiety-like behaviors acquisition in adults and revealing an important role for non-apoptotic mechanisms of cell death during neurodevelopment.
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Affiliation(s)
| | - Heather T Broihier
- Department of Neurosciences, Case Western Reserve University School of Medicine, Cleveland, OH 44016, USA.
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187
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Autophagy Pathways in CNS Myeloid Cell Immune Functions. Trends Neurosci 2020; 43:1024-1033. [DOI: 10.1016/j.tins.2020.09.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 08/17/2020] [Accepted: 09/04/2020] [Indexed: 02/06/2023]
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188
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Yamaoka Y, Matsunaga S, Jeremiah SS, Nishi M, Miyakawa K, Morita T, Khatun H, Shimizu H, Okabe N, Kimura H, Hasegawa H, Ryo A. Zika virus protease induces caspase-independent pyroptotic cell death by directly cleaving gasdermin D. Biochem Biophys Res Commun 2020; 534:666-671. [PMID: 33208231 DOI: 10.1016/j.bbrc.2020.11.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 11/07/2020] [Indexed: 12/27/2022]
Abstract
The association of Zika virus (ZIKV) infection with a congenital malformation in fetuses, neurological, and other systemic complications in adults have brought significant global health emergency. ZIKV targets nerve cells in the brain and causes cell death, such as pyroptosis, leading to neuroinflammation. Here we described a novel mechanism of pyroptosis caused by ZIKV protease. We found that ZIKV protease directly cleaved the GSDMD into N-terminal fragment (1-249) leading to pyroptosis in a caspase-independent manner, suggesting a direct mechanism of ZIKV-induced cell death and subsequent inflammation. Our findings might shed new light to explore the pathogenesis of ZIKV infections where ZIKV protease might be a suitable target for the development of antiviral agents.
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Affiliation(s)
- Yutaro Yamaoka
- Department of Microbiology, Yokohama City University School of Medicine, Kanagawa, 236-0004, Japan; Life Science Laboratory, Technology and Development Division, Kanto Chemical Co., Inc., Kanagawa, 259-1146, Japan
| | - Satoko Matsunaga
- Department of Microbiology, Yokohama City University School of Medicine, Kanagawa, 236-0004, Japan
| | - Sundararaj S Jeremiah
- Department of Microbiology, Yokohama City University School of Medicine, Kanagawa, 236-0004, Japan
| | - Mayuko Nishi
- Department of Microbiology, Yokohama City University School of Medicine, Kanagawa, 236-0004, Japan
| | - Kei Miyakawa
- Department of Microbiology, Yokohama City University School of Medicine, Kanagawa, 236-0004, Japan
| | - Takeshi Morita
- Department of Microbiology, Yokohama City University School of Medicine, Kanagawa, 236-0004, Japan
| | - Hajera Khatun
- Department of Microbiology, Yokohama City University School of Medicine, Kanagawa, 236-0004, Japan
| | - Hideaki Shimizu
- Division of Virology, Kawasaki City Institute for Public Health, Kanagawa, 210-0821, Japan
| | - Nobuhiko Okabe
- Division of Virology, Kawasaki City Institute for Public Health, Kanagawa, 210-0821, Japan
| | - Hirokazu Kimura
- Department of Health Science, Gunma Paz University Graduate School, Gunma, 370-0006, Japan
| | - Hideki Hasegawa
- Influenza Research Center, National Institute of Infectious Diseases, Tokyo, 208-0011, Japan
| | - Akihide Ryo
- Department of Microbiology, Yokohama City University School of Medicine, Kanagawa, 236-0004, Japan.
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189
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Frank MG, Baratta MV, Zhang K, Fallon IP, Pearson MA, Liu G, Hutchinson MR, Watkins LR, Goldys EM, Maier SF. Acute stress induces the rapid and transient induction of caspase-1, gasdermin D and release of constitutive IL-1β protein in dorsal hippocampus. Brain Behav Immun 2020; 90:70-80. [PMID: 32750541 PMCID: PMC7544655 DOI: 10.1016/j.bbi.2020.07.042] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/27/2020] [Accepted: 07/28/2020] [Indexed: 01/31/2023] Open
Abstract
The proinflammatory cytokine interleukin (IL)-1β plays a pivotal role in the behavioral manifestations (i.e., sickness) of the stress response. Indeed, exposure to acute and chronic stressors induces the expression of IL-1β in stress-sensitive brain regions. Thus, it is typically presumed that exposure to stressors induces the extra-cellular release of IL-1β in the brain parenchyma. However, this stress-evoked neuroimmune phenomenon has not been directly demonstrated nor has the cellular process of IL-1β release into the extracellular milieu been characterized in brain. This cellular process involves a form of inflammatory cell death, termed pyroptosis, which involves: 1) activation of caspase-1, 2) caspase-1 maturation of IL-1β, 3) caspase-1 cleavage of gasdermin D (GSDMD), and 4) GSDMD-induced permeability of the cell membrane through which IL-1β is released into the extracellular space. Thus, the present study examined whether stress induces the extra-cellular release of IL-1β and engages the above cellular process in mediating IL-1β release in the brain. Male Sprague-Dawley rats were exposed to inescapable tailshock (IS). IL-1β extra-cellular release, caspase-1 activity and cleavage of GSDMD were measured in dorsal hippocampus. We found that exposure to IS induced a transient increase in the release of IL-1β into the extracellular space immediately after termination of the stressor. IS also induced a transient increase in caspase-1 activity prior to IL-1β release, while activation of GSDMD was observed immediately after termination of the stressor. IS also increased mRNA and protein expression of the ESCRTIII protein CHMP4B, which is involved in cellular repair. The present results suggest that exposure to an acute stressor induces the hallmarks of pyroptosis in brain, which might serve as a key cellular process involved in the release of IL-1β into the extracellular milieu of the brain parenchyma.
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Affiliation(s)
- Matthew G. Frank
- Department of Psychology and Neuroscience, Center for Neuroscience, University of Colorado Boulder, Boulder, CO;,Corresponding Author: Department of Psychology and Neuroscience, Center for Neuroscience, Campus Box 603, University of Colorado Boulder, Boulder, CO, 80301, USA, Tel: +1-303-919-8116,
| | - Michael V. Baratta
- Department of Psychology and Neuroscience, Center for Neuroscience, University of Colorado Boulder, Boulder, CO
| | - Kaixin Zhang
- ARC Centre of Excellence in Nanoscale Biophotonics (CNBP), Macquarie University, North Ryde, Australia;,Graduate School of Biomedical Engineering, The University of New South Wales, Sydney, Australia
| | - Isabella P. Fallon
- Department of Psychology and Neuroscience, Center for Neuroscience, University of Colorado Boulder, Boulder, CO
| | - Mikayleigh A. Pearson
- Department of Psychology and Neuroscience, Center for Neuroscience, University of Colorado Boulder, Boulder, CO
| | - Guozhen Liu
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney, Australia;,International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan, China
| | - Mark R. Hutchinson
- Adelaide Medical School & ARC Centre of Excellence in Nanoscale Biophotonics (CNBP), The University of Adelaide, Adelaide, Australia
| | - Linda R. Watkins
- Department of Psychology and Neuroscience, Center for Neuroscience, University of Colorado Boulder, Boulder, CO
| | - Ewa M. Goldys
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney, Australia
| | - Steven F. Maier
- Department of Psychology and Neuroscience, Center for Neuroscience, University of Colorado Boulder, Boulder, CO
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190
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Khadka B, Lee JY, Park DH, Kim KT, Bae JS. The Role of Natural Compounds and their Nanocarriers in the Treatment of CNS Inflammation. Biomolecules 2020; 10:E1401. [PMID: 33019651 PMCID: PMC7601486 DOI: 10.3390/biom10101401] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 09/25/2020] [Accepted: 09/26/2020] [Indexed: 12/16/2022] Open
Abstract
Neuroinflammation, which is involved in various inflammatory cascades in nervous tissues, can result in persistent and chronic apoptotic neuronal cell death and programmed cell death, triggering various degenerative disorders of the central nervous system (CNS). The neuroprotective effects of natural compounds against neuroinflammation are mainly mediated by their antioxidant, anti-inflammatory, and antiapoptotic properties that specifically promote or inhibit various molecular signal transduction pathways. However, natural compounds have several limitations, such as their pharmacokinetic properties and stability, which hinder their clinical development and use as medicines. This review discusses the molecular mechanisms of neuroinflammation and degenerative diseases of CNS. In addition, it emphasizes potential natural compounds and their promising nanocarriers for overcoming their limitations in the treatment of neuroinflammation. Moreover, recent promising CNS inflammation-targeted nanocarrier systems implementing lesion site-specific active targeting strategies for CNS inflammation are also discussed.
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Affiliation(s)
- Bikram Khadka
- Department of Biomedicine, Health & Life Convergence Sciences, BK21 Four, Mokpo National University, Muan-gun, Jeonnam 58554, Korea;
| | - Jae-Young Lee
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea;
| | - Dong Ho Park
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu 41944, Korea;
| | - Ki-Taek Kim
- Department of Biomedicine, Health & Life Convergence Sciences, BK21 Four, Mokpo National University, Muan-gun, Jeonnam 58554, Korea;
- College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, Muan-gun, Jeonnam 58554, Korea
| | - Jong-Sup Bae
- College of Pharmacy, CMR1, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 41566, Korea
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191
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Li J, Wu DM, Yu Y, Deng SH, Liu T, Zhang T, He M, Zhao YY, Xu Y. Amifostine ameliorates induction of experimental autoimmune encephalomyelitis: Effect on reactive oxygen species/NLRP3 pathway. Int Immunopharmacol 2020; 88:106998. [PMID: 33182064 DOI: 10.1016/j.intimp.2020.106998] [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: 04/20/2020] [Revised: 09/04/2020] [Accepted: 09/08/2020] [Indexed: 10/23/2022]
Abstract
Multiple sclerosis (MS) is an autoimmune disease for which conventional treatments have limited efficacy or side effects. Free radicals are primarily involved in blood-brain barrier disruption and induce neuronal and axonal damage, thus promoting the development of MS. Amifostine, a radioprotective drug used as a cytoprotective agent, attenuates oxidative stress and improves radiation damage by acting as a direct scavenger of reactive oxygen and nitrogen species. The aim of this study was to evaluate the effects of amifostine on MS in a mouse model of experimental autoimmune encephalomyelitis (EAE), which was developed by immunizing C57BL/6 mice with myelin oligodendrocyte glycoprotein and pertussis toxin. EAE mice received intraperitoneal injections of amifostine prior to onset of clinical symptoms and were monitored up to day 15 post induction. We observed abnormal clinical behavioral scores and a decrease in body weight. Histological analysis showed severe inflammatory infiltration and demyelination in the brain and spinal cord lumbar enlargements where significant upregulation of the mRNA expression of the pro-inflammatory cytokines interleukin-6 and interleukin-8, downregulation of the anti-inflammatory cytokine interleukin-10, and obvious microgliosis were also observed. Amifostine treatment potently reversed these abnormal changes. The anti-inflammatory effect of amifostine was associated with the inhibition of reactive oxygen species generation. Furthermore, the expression of proteins involved in the NLRP3 signaling pathway and pyroptosis was decreased. In conclusion, our study showed that amifostine ameliorates induction of experimental autoimmune encephalomyelitis via anti-inflammatory and anti-pyroptosis effects, providing further insights into the use of amifostine for the treatment of MS.
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Affiliation(s)
- Jing Li
- Clinical Laboratory, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, 278 Baoguang Road, Chengdu, Sichuan 610500, PR China; Collaborative Innovation Center of Sichuan for Elderly Care and Health of Chengdu Medical College, Baoguang Road, Chengdu, Sichuan 610041, PR China
| | - Dong-Ming Wu
- Clinical Laboratory, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, 278 Baoguang Road, Chengdu, Sichuan 610500, PR China; Collaborative Innovation Center of Sichuan for Elderly Care and Health of Chengdu Medical College, Baoguang Road, Chengdu, Sichuan 610041, PR China
| | - Ye Yu
- Clinical Laboratory, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, 278 Baoguang Road, Chengdu, Sichuan 610500, PR China; Collaborative Innovation Center of Sichuan for Elderly Care and Health of Chengdu Medical College, Baoguang Road, Chengdu, Sichuan 610041, PR China
| | - Shi-Hua Deng
- Clinical Laboratory, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, 278 Baoguang Road, Chengdu, Sichuan 610500, PR China; Collaborative Innovation Center of Sichuan for Elderly Care and Health of Chengdu Medical College, Baoguang Road, Chengdu, Sichuan 610041, PR China
| | - Teng Liu
- Clinical Laboratory, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, 278 Baoguang Road, Chengdu, Sichuan 610500, PR China; Collaborative Innovation Center of Sichuan for Elderly Care and Health of Chengdu Medical College, Baoguang Road, Chengdu, Sichuan 610041, PR China
| | - Ting Zhang
- Clinical Laboratory, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, 278 Baoguang Road, Chengdu, Sichuan 610500, PR China; Collaborative Innovation Center of Sichuan for Elderly Care and Health of Chengdu Medical College, Baoguang Road, Chengdu, Sichuan 610041, PR China
| | - Miao He
- Clinical Laboratory, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, 278 Baoguang Road, Chengdu, Sichuan 610500, PR China; Collaborative Innovation Center of Sichuan for Elderly Care and Health of Chengdu Medical College, Baoguang Road, Chengdu, Sichuan 610041, PR China
| | - Yang-Yang Zhao
- Clinical Laboratory, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, 278 Baoguang Road, Chengdu, Sichuan 610500, PR China; Collaborative Innovation Center of Sichuan for Elderly Care and Health of Chengdu Medical College, Baoguang Road, Chengdu, Sichuan 610041, PR China
| | - Ying Xu
- Clinical Laboratory, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, 278 Baoguang Road, Chengdu, Sichuan 610500, PR China; Collaborative Innovation Center of Sichuan for Elderly Care and Health of Chengdu Medical College, Baoguang Road, Chengdu, Sichuan 610041, PR China.
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192
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Saito LB, Fernandes JP, Smith MJ, Doan MAL, Branton WG, Schmitt LM, Wuest M, Monaco MC, Major EO, Wuest F, Power C. Intranasal anti-caspase-1 therapy preserves myelin and glucose metabolism in a model of progressive multiple sclerosis. Glia 2020; 69:216-229. [PMID: 32882086 DOI: 10.1002/glia.23896] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 07/21/2020] [Accepted: 07/22/2020] [Indexed: 12/12/2022]
Abstract
Inflammatory demyelination and axonal injury in the central nervous system (CNS) are cardinal features of progressive multiple sclerosis (MS), and linked to activated brain macrophage-like cells (BMCs) including resident microglia and trafficking macrophages. Caspase-1 is a pivotal mediator of inflammation and cell death in the CNS. We investigated the effects of caspase-1 activation and its regulation in models of MS. Brains from progressive MS and non-MS patients, as well as cultured human oligodendrocytes were examined by transcriptomic and morphological methods. Next generation transcriptional sequencing of progressive MS compared to non-MS patients' normal appearing white matter (NAWM) showed induction of caspase-1 as well as other inflammasome-associated genes with concurrent suppression of neuron-specific genes. Oligodendrocytes exposed to TNFα exhibited upregulation of caspase-1 with myelin gene suppression in a cell differentiation state-dependent manner. Brains from cuprizone-exposed mice treated by intranasal delivery of the caspase-1 inhibitor, VX-765 or its vehicle, were investigated in morphological and molecular studies, as well as by fluorodeoxyglucose-positron emission tomography (FDG-PET) imaging. Cuprizone exposure resulted in BMC and caspase-1 activation accompanied by demyelination and axonal injury, which was abrogated by intranasal VX-765 treatment. FDG-PET imaging revealed suppressed glucose metabolism in the thalamus, hippocampus and cortex of cuprizone-exposed mice that was restored with VX-765 treatment. These studies highlight the caspase-1 dependent interactions between inflammation, demyelination, and glucose metabolism in progressive MS and associated models. Intranasal delivery of an anti-caspase-1 therapy represents a promising therapeutic approach for progressive MS and other neuro-inflammatory diseases.
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Affiliation(s)
- Leina B Saito
- Department of Medical Microbiology & Immunology, University of Alberta, Edmonton, Alberta, Canada
| | - Jason P Fernandes
- Department of Medical Microbiology & Immunology, University of Alberta, Edmonton, Alberta, Canada
| | - Mackenzie J Smith
- Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Matthew A L Doan
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, Alberta, Canada
| | - William G Branton
- Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Laura M Schmitt
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, Alberta, Canada.,Department of Laboratory Medicine & Pathology, University of Alberta, Edmonton, Alberta, Canada
| | - Melinda Wuest
- Department of Oncology, University of Alberta, Edmonton, Alberta, Canada
| | | | | | - Frank Wuest
- Department of Oncology, University of Alberta, Edmonton, Alberta, Canada
| | - Christopher Power
- Department of Medical Microbiology & Immunology, University of Alberta, Edmonton, Alberta, Canada.,Department of Medicine, University of Alberta, Edmonton, Alberta, Canada.,Neuroscience and Mental Health Institute, University of Alberta, Edmonton, Alberta, Canada
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193
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Hsu CC, Huang CC, Chien LH, Lin MT, Chang CP, Lin HJ, Chio CC. Ischemia/reperfusion injured intestinal epithelial cells cause cortical neuron death by releasing exosomal microRNAs associated with apoptosis, necroptosis, and pyroptosis. Sci Rep 2020; 10:14409. [PMID: 32873851 PMCID: PMC7462997 DOI: 10.1038/s41598-020-71310-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 08/14/2020] [Indexed: 12/24/2022] Open
Abstract
To date, there is no good evidence that intestine epithelial cells (IEC) affected by ischemia/reperfusion (I/R) injury are able to cause cortical neuron injury directly. Additionally, it remains unclear whether the neuronal damage caused by I/R injured IEC can be affected by therapeutic hypothermia (TH, 32 °C). To address these questions, we performed an oxygen–glucose deprivation (OGD) affected IEC-6-primary cortical neuron coculture system under normothermia (37 °C) or TH (32 °C) conditions. It was found that OGD caused hyperpermeability in IEC-6 cell monolayers. OGD-preconditioned IEC-6 cells caused cortical neuronal death (e.g., decreased cell viability), synaptotoxicity, and neuronal apoptosis (evidenced by increased caspase-3 expression and the number of TUNEL-positive cells), necroptosis (evidenced by increased receptor-interacting serine/threonine-protein kinase-1 [RIPK1], RIPK3 and mixed lineage kinase domain-like pseudokinase [MLKL] expression), and pyroptosis (evidenced by an increase in caspase-1, gasdermin D [GSDMD], IL-1β, IL-18, the apoptosis-associated speck-like protein containing a caspase recruitment domain [ASC], and nucleotide oligomerization domain [NOD]-like receptor [NLRP]-1 expression). TH did not affect the intestinal epithelial hyperpermeability but did attenuate OGD-induced neuronal death and synaptotoxicity. We also performed quantitative real-time PCR to quantify the genes encoding 84 exosomal microRNAs in the medium of the control-IEC-6, the control-neuron, the OGD-IEC-6 at 37 °C, the OGD-IEC-6 at 32 °C, the neuron cocultured with OGD-IEC-6 at 37 °C, and the neurons cocultured with OGD-IEC-6 at 32 °C. We found that the control IEC-6 cell s or cortical neurons are able to secrete a basal level of exosomal miRNAs in their medium. OGD significantly up-regulated the basal level of each parameter for IEC-6 cells. As compared to those of the OGD-IEC-6 cells or the control neurons, the OGD-IEC-6 cocultured neurons had significantly higher levels of 19 exosomal miRNAs related to apoptosis, necroptosis, and/or pyroptosis events. Our results identify that I/R injured intestinal epithelium cells can induce cortical neuron death via releasing paracrine mediators such as exosomal miRNAs associated with apoptosis, necroptosis, and/or pyroptosis, which can be counteracted by TH.
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Affiliation(s)
- Chien-Chin Hsu
- Department of Biotechnology and Food Technology, Southern Taiwan University of Science and Technology, No. 1, Nan-Tai Street, Yungkang District, Tainan City, 710, Taiwan.,Department of Emergency Medicine, Chi Mei Medical Center, No. 901, Zhonghua Road, Yongkang District, Tainan City, 710, Taiwan
| | - Chien-Cheng Huang
- Department of Emergency Medicine, Chi Mei Medical Center, No. 901, Zhonghua Road, Yongkang District, Tainan City, 710, Taiwan.,Department of Senior Services, Southern Taiwan University of Science and Technology, No. 1, Nan-Tai Street, Yungkang District, Tainan City, 710, Taiwan.,Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, No. 1, University Road, Tainan City, 710, Taiwan.,Department of Geriatrics and Gerontology, Chi-Mei Medical Center, No. 901, Zhonghua Road, Yongkang District, Tainan City, 710, Taiwan.,Department of Occupational Medicine, Chi-Mei Medical Center, No. 901, Zhonghua Road, Yongkang District, Tainan City, 710, Taiwan
| | - Lan-Hsiang Chien
- Department of Medical Research, Chi Mei Medical Center, No. 901, Zhonghua Road, Yongkang District, Tainan City, 710, Taiwan
| | - Mao-Tsun Lin
- Department of Medical Research, Chi Mei Medical Center, No. 901, Zhonghua Road, Yongkang District, Tainan City, 710, Taiwan
| | - Ching-Ping Chang
- Department of Medical Research, Chi Mei Medical Center, No. 901, Zhonghua Road, Yongkang District, Tainan City, 710, Taiwan.
| | - Hung-Jung Lin
- Department of Emergency Medicine, Chi Mei Medical Center, No. 901, Zhonghua Road, Yongkang District, Tainan City, 710, Taiwan. .,Department of Medicine, Taipei Medical University, No. 250 Wu-Hsing Street, Taipei City, 110, Taiwan.
| | - Chung-Ching Chio
- Division of Neurosurgery, Department of Surgery, Chi Mei Medical Center, No. 901, Zhonghua Road, Yongkang District, Tainan City, 710, Taiwan.
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194
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McKenzie BA, Fernandes JP, Doan MAL, Schmitt LM, Branton WG, Power C. Activation of the executioner caspases-3 and -7 promotes microglial pyroptosis in models of multiple sclerosis. J Neuroinflammation 2020; 17:253. [PMID: 32861242 PMCID: PMC7456507 DOI: 10.1186/s12974-020-01902-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 07/15/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Pyroptosis is a type of proinflammatory regulated cell death (RCD) in which caspase-1 proteolytically cleaves gasdermin D (GSDMD) to yield a cytotoxic pore-forming protein. Recent studies have suggested that additional cell death pathways may interact with GSDMD under certain circumstances to execute pyroptosis. Microglia/macrophages in the central nervous system (CNS) undergo GSDMD-associated pyroptosis in multiple sclerosis (MS) and its animal model experimental autoimmune encephalomyelitis (EAE) but the contribution of other cell death pathways to this phenomenon is unknown. Herein, we tested the hypothesis that multiple RCD pathways underlie microglial pyroptosis in the context of neuroinflammation. METHODS A siRNA screen of genes with known RCD functions was performed in primary human microglia to evaluate their role in nigericin-induced pyroptosis using supernatant lactate dehydrogenase activity as a read-out of cell lysis. Activation of apoptotic executioner proteins and their contribution to pyroptosis was assessed using semi-quantitative confocal microscopy, high-sensitivity ELISA, immunoblot, cell lysis assays, and activity-based fluorescent probes. Quantification of pyroptosis-related protein expression was performed in CNS lesions from patients with progressive MS and mice with MOG35-55-induced EAE, and in matched controls. RESULTS Among progressive MS patients, activated caspase-3 was detected in GSDMD immunopositive pyroptotic microglia/macrophages within demyelinating lesions. In the siRNA screen, suppression of caspase-3/7, caspase-1, or GSDMD expression prevented plasma membrane rupture during pyroptosis. Upon exposure to pyroptotic stimuli (ATP or nigericin), human microglia displayed caspase-3/7 activation and cleavage of caspase-3/7-specific substrates (e.g., DFF45, ROCK1, and PARP), with accompanying features of pyroptosis including GSDMD immunopositive pyroptotic bodies, IL-1β release, and membrane rupture. Pyroptosis-associated nuclear condensation and pyroptotic body formation were suppressed by caspase-3/7 inhibition. Pharmacological and siRNA-mediated inhibition of caspase-1 diminished caspase-3/7 activation during pyroptosis. In mice with EAE-associated neurological deficits, activated caspase-3 colocalized with GSDMD immunopositivity in lesion-associated macrophages/microglia. CONCLUSIONS Activation of executioner caspases-3/7, widely considered key mediators of apoptosis, contributed to GSDMD-associated microglial pyroptosis under neuroinflammatory conditions. Collectively, these observations highlight the convergence of different cell death pathways during neuroinflammation and offer new therapeutic opportunities in neuroinflammatory disease.
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Affiliation(s)
- Brienne A McKenzie
- Department of Medical Microbiology & Immunology, University of Alberta, Edmonton, AB, Canada.,Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - Jason P Fernandes
- Department of Medical Microbiology & Immunology, University of Alberta, Edmonton, AB, Canada.,Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - Matthew A L Doan
- Department of Medicine, University of Alberta, Edmonton, AB, Canada.,Neuroscience & Mental Health Institute, University of Alberta, Edmonton, AB, Canada
| | - Laura M Schmitt
- Neuroscience & Mental Health Institute, University of Alberta, Edmonton, AB, Canada.,Laboratory Medicine & Pathology, University of Alberta, Edmonton, AB, Canada
| | | | - Christopher Power
- Department of Medical Microbiology & Immunology, University of Alberta, Edmonton, AB, Canada. .,Department of Medicine, University of Alberta, Edmonton, AB, Canada. .,Neuroscience & Mental Health Institute, University of Alberta, Edmonton, AB, Canada.
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195
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Patmore DM, Jassim A, Nathan E, Gilbertson RJ, Tahan D, Hoffmann N, Tong Y, Smith KS, Kanneganti TD, Suzuki H, Taylor MD, Northcott P, Gilbertson RJ. DDX3X Suppresses the Susceptibility of Hindbrain Lineages to Medulloblastoma. Dev Cell 2020; 54:455-470.e5. [PMID: 32553121 PMCID: PMC7483908 DOI: 10.1016/j.devcel.2020.05.027] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 04/19/2020] [Accepted: 05/22/2020] [Indexed: 12/13/2022]
Abstract
DEAD-Box Helicase 3 X-Linked (DDX3X) is frequently mutated in the Wingless (WNT) and Sonic hedghog (SHH) subtypes of medulloblastoma-the commonest malignant childhood brain tumor, but whether DDX3X functions as a medulloblastoma oncogene or tumor suppressor gene is not known. Here, we show that Ddx3x regulates hindbrain patterning and development by controlling Hox gene expression and cell stress signaling. In mice predisposed to Wnt- or Shh medulloblastoma, Ddx3x sensed oncogenic stress and suppressed tumor formation. WNT and SHH medulloblastomas normally arise only in the lower and upper rhombic lips, respectively. Deletion of Ddx3x removed this lineage restriction, enabling both medulloblastoma subtypes to arise in either germinal zone. Thus, DDX3X is a medulloblastoma tumor suppressor that regulates hindbrain development and restricts the competence of cell lineages to form medulloblastoma subtypes.
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Affiliation(s)
- Deanna M Patmore
- CRUK Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, UK
| | - Amir Jassim
- CRUK Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, UK
| | - Erica Nathan
- CRUK Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, UK
| | - Reuben J Gilbertson
- CRUK Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, UK
| | - Daniel Tahan
- CRUK Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, UK
| | - Nadin Hoffmann
- CRUK Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, UK
| | - Yiai Tong
- Department of Developmental Neurobiology, St Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA
| | - Kyle S Smith
- Department of Developmental Neurobiology, St Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA
| | - Thirumala-Devi Kanneganti
- Department of Immunology, St Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA
| | - Hiromichi Suzuki
- Division of Neurosurgery, The Hospital for Sick Children, 555 University Avenue, Toronto, ON M5G 1X8, Canada
| | - Michael D Taylor
- Division of Neurosurgery, The Hospital for Sick Children, 555 University Avenue, Toronto, ON M5G 1X8, Canada
| | - Paul Northcott
- Department of Developmental Neurobiology, St Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA
| | - Richard J Gilbertson
- CRUK Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, UK; Department of Oncology, University of Cambridge, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, UK.
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196
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Kolbrink B, Riebeling T, Kunzendorf U, Krautwald S. Plasma Membrane Pores Drive Inflammatory Cell Death. Front Cell Dev Biol 2020; 8:817. [PMID: 32974349 PMCID: PMC7471660 DOI: 10.3389/fcell.2020.00817] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 08/03/2020] [Indexed: 01/08/2023] Open
Abstract
Necroptosis and pyroptosis are two forms of regulated cell death. They are executed by the proteins mixed-lineage kinase domain-like (MLKL) and gasdermin D (GSDMD), respectively. Once activated by numerous pathways, these proteins form membrane pores that allow the influx and efflux of various ions, proteins, and water, ultimately resulting in the death of the cell. These modalities of cell death are considered highly inflammatory because of the release of inflammatory cytokines and damage-associated molecular patterns, and are thereby not only deleterious for the dying cell itself, but also its environment or the entire organism. The relevance for these processes has been observed in various physiological and pathophysiological conditions, ranging from viral and bacterial infections over autoimmune and chronic inflammatory diseases to ischemic organ damage. In recent years, initial in vitro experiments have shed light on a range of connections between necroptosis and pyroptosis. Initial in vivo studies also indicate that, in many disease models, these two forms of cell death cannot be considered individually, as they demonstrate a complex interaction. In this article, we provide an overview of the currently known structure, pathways of activation, and functions of MLKL and GSDMD. With emerging evidence for an interconnection between necroptosis and pyroptosis in not only in vitro, but also in vivo models of disease, we highlight in particular the clinical relevance of the crosslinks between these two forms of inflammatory cell death and their implications for novel therapeutic strategies in a variety of diseases.
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Affiliation(s)
- Benedikt Kolbrink
- Department of Nephrology and Hypertension, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Theresa Riebeling
- Department of Nephrology and Hypertension, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Ulrich Kunzendorf
- Department of Nephrology and Hypertension, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Stefan Krautwald
- Department of Nephrology and Hypertension, University Hospital Schleswig-Holstein, Kiel, Germany
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197
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Dai X, Deng Z, Liang Y, Chen L, Jiang W, Zhao W. Enterococcus faecalis
induces necroptosis in human osteoblastic MG63 cells through the RIPK3 / MLKL signalling pathway. Int Endod J 2020; 53:1204-1215. [PMID: 32379949 DOI: 10.1111/iej.13323] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 05/01/2020] [Indexed: 12/12/2022]
Affiliation(s)
- X. Dai
- Department of Stomatology Nanfang Hospital Southern Medical University Guangzhou China
| | - Z. Deng
- Department of Stomatology Nanfang Hospital Southern Medical University Guangzhou China
| | - Y. Liang
- Department of Stomatology Nanfang Hospital Southern Medical University Guangzhou China
| | - L. Chen
- Department of Stomatology Nanfang Hospital Southern Medical University Guangzhou China
| | - W Jiang
- Department of Stomatology Nanfang Hospital Southern Medical University Guangzhou China
| | - W. Zhao
- Department of Stomatology Nanfang Hospital Southern Medical University Guangzhou China
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198
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Yang F, Zhu W, Cai X, Zhang W, Yu Z, Li X, Zhang J, Cai M, Xiang J, Cai D. Minocycline alleviates NLRP3 inflammasome-dependent pyroptosis in monosodium glutamate-induced depressive rats. Biochem Biophys Res Commun 2020; 526:553-559. [PMID: 32245616 DOI: 10.1016/j.bbrc.2020.02.149] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 02/24/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND Inflammasome activation and followed by the release of proinflammatory cytokines play a pivotal role in the development and progression of depression. However, the involvement of gasdermin D (GSDMD)-mediated pyroptosis in inflammasome-associated depression has not been studied. The present study aimed to determine the involvement of pyroptosis in the development of depression. METHODS The rat depressive model was established by the administration of monosodium glutamate (MSG) in postnatal rats. Minocycline (an anti-inflammatory agent) and VX-765 (a specific inhibitor of caspase-1) were given as intervention treatments when rats were two-month-old. Rat depressive behaviors were evaluated by behavioral tests, including open field test, sucrose preference test, and forced swim test. Rat hippocampi were collected for western blotting and immunofluorescence examination. RESULTS MSG administration induced depressive-like behavior in rats. MSG upregulated protein presences of caspase-1, GSDMD, interleukin-1β (IL-1β), interleukin-18 (IL-18), NLR pyrin domain-containing 3 (NLRP3), apoptosis-associated speck-like protein (ASC), high mobility group box 1 protein (HMGB1), and the receptor for advanced glycation end products (RAGE) in the hippocampus. Protein presences of HMGB1, NLRP3 and GSDMD were upregulated in Olig2+ oligodendrocytes in the hippocampus. The data suggest that both HMGB1/RAGE/NLRP3 signalings and GSDMD-dependent pyroptosis were activated. Both minocycline and VX-765 treatments improved depressive-like behaviors. Minocycline treatment significantly reduced both HMGB1/RAGE/NLRP3 inflammasome signalings and GSDMD-dependent pyroptosis. VX-765 downregulated GSDMD-dependent pyroptosis, but not HMGB1/RAGE signalings, indicating that GSDMD-dependent pyroptosis is a key player in the progress of depression. CONCLUSION In rats hippocampus, NLRP3 inflammasome activates GSDMD mediated-pyroptosis in the hippocampus of MSG-induced depressive rats.
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Affiliation(s)
- Feng Yang
- Department of Integrative Medicine, Zhongshan Hospital, Fudan University, China; Institute of Neurology, Academy of Integrative Medicine, Fudan University, Shanghai, China
| | - Wen Zhu
- Department of Integrative Medicine, Zhongshan Hospital, Fudan University, China; Institute of Neurology, Academy of Integrative Medicine, Fudan University, Shanghai, China
| | - Xiaofang Cai
- Department of Traditional Chinese Medicine, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, China
| | - Wen Zhang
- Department of Integrative Medicine, Zhongshan Hospital, Fudan University, China; Institute of Neurology, Academy of Integrative Medicine, Fudan University, Shanghai, China
| | - Zhonghai Yu
- Department of Traditional Chinese Medicine, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, China
| | - Xiangting Li
- Department of Integrative Medicine, Zhongshan Hospital, Fudan University, China; Institute of Neurology, Academy of Integrative Medicine, Fudan University, Shanghai, China
| | - Jingsi Zhang
- Department of Neurology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, China
| | - Min Cai
- Department of Integrative Medicine, Zhongshan Hospital, Fudan University, China; Institute of Neurology, Academy of Integrative Medicine, Fudan University, Shanghai, China
| | - Jun Xiang
- Department of Integrative Medicine, Zhongshan Hospital, Fudan University, China; Institute of Neurology, Academy of Integrative Medicine, Fudan University, Shanghai, China.
| | - Dingfang Cai
- Department of Integrative Medicine, Zhongshan Hospital, Fudan University, China; Institute of Neurology, Academy of Integrative Medicine, Fudan University, Shanghai, China.
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