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Wang Q, Yang F, Duo K, Liu Y, Yu J, Wu Q, Cai Z. The Role of Necroptosis in Cerebral Ischemic Stroke. Mol Neurobiol 2024; 61:3882-3898. [PMID: 38038880 DOI: 10.1007/s12035-023-03728-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 10/18/2023] [Indexed: 12/02/2023]
Abstract
Cerebral ischemia, also known as ischemic stroke, accounts for nearly 85% of all strokes and is the leading cause of disability worldwide. Due to disrupted blood supply to the brain, cerebral ischemic injury is trigged by a series of complex pathophysiological events including excitotoxicity, oxidative stress, inflammation, and cell death. Currently, there are few treatments for cerebral ischemia owing to an incomplete understanding of the molecular and cellular mechanisms. Accumulated evidence indicates that various types of programmed cell death contribute to cerebral ischemic injury, including apoptosis, ferroptosis, pyroptosis and necroptosis. Among these, necroptosis is morphologically similar to necrosis and is mediated by receptor-interacting serine/threonine protein kinase-1 and -3 and mixed lineage kinase domain-like protein. Necroptosis inhibitors have been shown to exert inhibitory effects on cerebral ischemic injury and neuroinflammation. In this review, we will discuss the current research progress regarding necroptosis in cerebral ischemia as well as the application of necroptosis inhibitors for potential therapeutic intervention in ischemic stroke.
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Affiliation(s)
- Qingsong Wang
- College of Pharmacy, Ningxia Medical University, Hui Autonomous Region, Yinchuan, 750004, Ningxia, China
| | - Fan Yang
- College of Pharmacy, Ningxia Medical University, Hui Autonomous Region, Yinchuan, 750004, Ningxia, China
| | - Kun Duo
- College of Pharmacy, Ningxia Medical University, Hui Autonomous Region, Yinchuan, 750004, Ningxia, China
| | - Yue Liu
- College of Pharmacy, Ningxia Medical University, Hui Autonomous Region, Yinchuan, 750004, Ningxia, China
| | - Jianqiang Yu
- College of Pharmacy, Ningxia Medical University, Hui Autonomous Region, Yinchuan, 750004, Ningxia, China
| | - Qihui Wu
- Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Zhenyu Cai
- College of Pharmacy, Ningxia Medical University, Hui Autonomous Region, Yinchuan, 750004, Ningxia, China.
- Shanghai Tenth People's Hospital, School of MedicineTongji University Cancer Center, Tongji University, Shanghai, 200092, China.
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2
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Fan X, Lin F, Chen Y, Dou Y, Li T, Jin X, Song J, Wang F. Luteolin-7- O-β-d-glucuronide Ameliorates Cerebral Ischemic Injury: Involvement of RIP3/MLKL Signaling Pathway. Molecules 2024; 29:1665. [PMID: 38611943 PMCID: PMC11013290 DOI: 10.3390/molecules29071665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Revised: 03/22/2024] [Accepted: 03/23/2024] [Indexed: 04/14/2024] Open
Abstract
Luteolin-7-O-β-d-glucuronide (LGU) is a major active flavonoid glycoside compound that is extracted from Ixeris sonchifolia (Bge.) Hance, and it is a Chinese medicinal herb mainly used for the treatment of coronary heart disease, angina pectoris, cerebral infarction, etc. In the present study, the neuroprotective effect of LGU was investigated in an oxygen glucose deprivation (OGD) model and a middle cerebral artery occlusion (MCAO) rat model. In vitro, LGU was found to effectively improve the OGD-induced decrease in neuronal viability and increase in neuronal death by a 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and a lactate dehydrogenase (LDH) leakage rate assay, respectively. LGU was also found to inhibit OGD-induced intracellular Ca2+ overload, adenosine triphosphate (ATP) depletion, and mitochondrial membrane potential (MMP) decrease. By Western blotting analysis, LGU significantly inhibited the OGD-induced increase in expressions of receptor-interacting serine/threonine-protein kinase 3 (RIP3) and mixed lineage kinase domain-like protein (MLKL). Moreover, molecular docking analysis showed that LGU might bind to RIP3 more stably and firmly than the RIP3 inhibitor GSK872. Immunofluorescence combined with confocal laser analyses disclosed that LGU inhibited the aggregation of MLKL to the nucleus. Our results suggest that LGU ameliorates OGD-induced rat primary cortical neuronal injury via the regulation of the RIP3/MLKL signaling pathway in vitro. In vivo, LGU was proven, for the first time, to protect the cerebral ischemia in a rat middle cerebral artery occlusion (MCAO) model, as shown by improved neurological deficit scores, infarction volume rate, and brain water content rate. The present study provides new insights into the therapeutic potential of LGU in cerebral ischemia.
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Affiliation(s)
- Xing Fan
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China; (X.F.); (F.L.); (Y.D.); (T.L.)
| | - Fang Lin
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China; (X.F.); (F.L.); (Y.D.); (T.L.)
| | - Yu Chen
- School of Functional Food and Wine, Shenyang Pharmaceutical University, Shenyang 110016, China; (Y.C.); (J.S.)
| | - Yuling Dou
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China; (X.F.); (F.L.); (Y.D.); (T.L.)
| | - Ting Li
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China; (X.F.); (F.L.); (Y.D.); (T.L.)
- Department of Pharmacy, Ezhou Central Hospital, Ezhou 436000, China
| | - Xinxin Jin
- Experimental Teaching Center of Pharmacology, Shenyang Pharmaceutical University, Shenyang 110016, China;
| | - Jintao Song
- School of Functional Food and Wine, Shenyang Pharmaceutical University, Shenyang 110016, China; (Y.C.); (J.S.)
| | - Fang Wang
- School of Functional Food and Wine, Shenyang Pharmaceutical University, Shenyang 110016, China; (Y.C.); (J.S.)
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Fan G, Liu M, Liu J, Huang Y, Mu W. Traditional Chinese medicines treat ischemic stroke and their main bioactive constituents and mechanisms. Phytother Res 2024; 38:411-453. [PMID: 38051175 DOI: 10.1002/ptr.8033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 09/12/2023] [Accepted: 09/24/2023] [Indexed: 12/07/2023]
Abstract
Ischemic stroke (IS) remains one of the leading causes of death and disability in humans. Unfortunately, none of the treatments effectively provide functional benefits to patients with IS, although many do so by targeting different aspects of the ischemic cascade response. The advantages of traditional Chinese medicine (TCM) in preventing and treating IS are obvious in terms of early treatment and global coordination. The efficacy of TCM and its bioactive constituents has been scientifically proven over the past decades. Based on clinical trials, this article provides a review of commonly used TCM patent medicines and herbal decoctions indicated for IS. In addition, this paper also reviews the mechanisms of bioactive constituents in TCM for the treatment of IS in recent years, both domestically and internationally. A comprehensive review of preclinical and clinical studies will hopefully provide new ideas to address the threat of IS.
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Affiliation(s)
- Genhao Fan
- Tianjin University of Chinese Medicine, Tianjin, China
- Clinical Pharmacology Department, Second Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Menglin Liu
- Tianjin University of Chinese Medicine, Tianjin, China
| | - Jia Liu
- Clinical Pharmacology Department, Second Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yuhong Huang
- Clinical Pharmacology Department, Second Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Wei Mu
- Clinical Pharmacology Department, Second Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
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Kwek MSY, Thangaveloo M, Madden LE, Phillips ARJ, Becker DL. Targeting Cx43 to Reduce the Severity of Pressure Ulcer Progression. Cells 2023; 12:2856. [PMID: 38132176 PMCID: PMC10741864 DOI: 10.3390/cells12242856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/07/2023] [Accepted: 12/15/2023] [Indexed: 12/23/2023] Open
Abstract
In the skin, repeated incidents of ischemia followed by reperfusion can result in the breakdown of the skin and the formation of a pressure ulcer. Here we gently applied paired magnets to the backs of mice to cause ischemia for 1.5 h and then removed them to allow reperfusion. The sterile inflammatory response generated within 4 h causes a stage 1 pressure ulcer with an elevation of the gap junction protein Cx43 in the epidermis. If this process is repeated the insult will result in a more severe stage 2 pressure ulcer with a breakdown of the epidermis 2-3 days later. After a single pinch, the elevation of Cx43 in the epidermis is associated with the inflammatory response with an increased number of neutrophils, HMGB1 (marker of necrosis) and RIP3 (responsible for necroptosis). Delivering Cx43 specific antisense oligonucleotides sub-dermally after a single insult, was able to significantly reduce the elevation of epidermal Cx43 protein expression and reduce the number of neutrophils and prevent the elevation of HMGB1 and RIP3. In a double pinch model, the Cx43 antisense treatment was able to reduce the level of inflammation, necroptosis, and the extent of tissue damage and progression to an open wound. This approach may be useful in reducing the progression of stage 1 pressure ulcers to stage 2.
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Affiliation(s)
- Milton Sheng Yi Kwek
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, Clinical Sciences Building, 11, Mandalay Road, Singapore 308232, Singapore (M.T.); (L.E.M.)
- Skin Research Institute Singapore, Clinical Sciences Building, 11, Mandalay Road, Singapore 308232, Singapore
| | - Moogaambikai Thangaveloo
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, Clinical Sciences Building, 11, Mandalay Road, Singapore 308232, Singapore (M.T.); (L.E.M.)
- Skin Research Institute Singapore, Clinical Sciences Building, 11, Mandalay Road, Singapore 308232, Singapore
| | - Leigh E. Madden
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, Clinical Sciences Building, 11, Mandalay Road, Singapore 308232, Singapore (M.T.); (L.E.M.)
- Skin Research Institute Singapore, Clinical Sciences Building, 11, Mandalay Road, Singapore 308232, Singapore
| | | | - David L. Becker
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, Clinical Sciences Building, 11, Mandalay Road, Singapore 308232, Singapore (M.T.); (L.E.M.)
- Skin Research Institute Singapore, Clinical Sciences Building, 11, Mandalay Road, Singapore 308232, Singapore
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Yuan X, Ye W, Chen L, Luo D, Zhou L, Qiu Y, Zhuo R, Zhao Y, Peng L, Yang L, Jin X, Zhou Y. URB597 exerts neuroprotective effects against transient brain ischemia injury in mice by regulating autophagic flux and necroptosis. Eur J Pharmacol 2023; 957:175982. [PMID: 37572942 DOI: 10.1016/j.ejphar.2023.175982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 07/14/2023] [Accepted: 08/09/2023] [Indexed: 08/14/2023]
Abstract
Ischemic stroke is a leading cause of death and disability, and medical treatments for ischemic stroke are very limited. URB597 is a potent and selective inhibitor of fatty acid amide hydrolase (FAAH). However, the effect of URB597 on ischemic stroke and the underlying molecular mechanisms remain little known. In this study, focal cerebral ischemia was induced by transient middle cerebral artery occlusion in mice. Our results showed that URB597 dose-dependently improved neurological function and reduced brain infarct volume and brain edema 24 h after brain ischemia. The most effective dose was 1 mg/kg and the therapeutic time window was within 3 h after ischemic stroke. To further investigate the underlying mechanism, necroptosis and autophagy flux were detected by Western blot and/or immunofluorescence staining with or without chloroquine, an autophagic flux inhibitor. Our results showed that URB597 promoted autophagic flux and reduced neuronal necroptosis after brain ischemia and these effects could be abolished by chloroquine. In addition, we found that peroxisome proliferator-activated receptor α (PPARα) antagonist GW6471 partly abolished the effect of URB597 against brain ischemia and URB597 upregulated the expressions of PPARα. In conclusion, URB597 exerts a neuroprotective effect in a dose- and time-dependent manner, and this effect may be related to its restoration of autophagic flux and inhibition of neuronal necroptosis. PPARα is involved in the neuroprotective effect of URB597. This study provides novel evidence that URB597 may be a promising agent for the clinical treatment of ischemic stroke.
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Affiliation(s)
- Xiaoqian Yuan
- Department of Basic Medical Science, School of Medicine, Xiamen University, Xiamen, 361102, China; Key Laboratory of Chiral Drugs, Xiamen, 361102, China.
| | - Wenxuan Ye
- Department of Basic Medical Science, School of Medicine, Xiamen University, Xiamen, 361102, China; Key Laboratory of Chiral Drugs, Xiamen, 361102, China
| | - Ling Chen
- Xiamen Cardiovascular Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361102, China; Department of Basic Medical Science, School of Medicine, Xiamen University, Xiamen, 361102, China; Key Laboratory of Chiral Drugs, Xiamen, 361102, China
| | - Doudou Luo
- Department of Basic Medical Science, School of Medicine, Xiamen University, Xiamen, 361102, China; Key Laboratory of Chiral Drugs, Xiamen, 361102, China; State Key Laboratory of Cellular Stress Biology, Xiamen University, Xiamen, 361102, China
| | - Li Zhou
- Department of Basic Medical Science, School of Medicine, Xiamen University, Xiamen, 361102, China
| | - Yan Qiu
- Key Laboratory of Chiral Drugs, Xiamen, 361102, China
| | - Rengong Zhuo
- Xiamen Cardiovascular Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361102, China; Department of Basic Medical Science, School of Medicine, Xiamen University, Xiamen, 361102, China; Key Laboratory of Chiral Drugs, Xiamen, 361102, China
| | - Yun Zhao
- Xiamen Cardiovascular Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361102, China; Department of Basic Medical Science, School of Medicine, Xiamen University, Xiamen, 361102, China; Key Laboratory of Chiral Drugs, Xiamen, 361102, China
| | - Lu Peng
- Xiamen Cardiovascular Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361102, China; Department of Basic Medical Science, School of Medicine, Xiamen University, Xiamen, 361102, China; Key Laboratory of Chiral Drugs, Xiamen, 361102, China
| | - Lichao Yang
- Xiamen Cardiovascular Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361102, China; Department of Basic Medical Science, School of Medicine, Xiamen University, Xiamen, 361102, China; Key Laboratory of Chiral Drugs, Xiamen, 361102, China
| | - Xin Jin
- Department of Basic Medical Science, School of Medicine, Xiamen University, Xiamen, 361102, China; Key Laboratory of Chiral Drugs, Xiamen, 361102, China
| | - Yu Zhou
- Xiamen Cardiovascular Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361102, China; Department of Basic Medical Science, School of Medicine, Xiamen University, Xiamen, 361102, China; Key Laboratory of Chiral Drugs, Xiamen, 361102, China; State Key Laboratory of Cellular Stress Biology, Xiamen University, Xiamen, 361102, China.
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6
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Pluta R. The Dual Role of Autophagy in Postischemic Brain Neurodegeneration of Alzheimer's Disease Proteinopathy. Int J Mol Sci 2023; 24:13793. [PMID: 37762096 PMCID: PMC10530906 DOI: 10.3390/ijms241813793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/02/2023] [Accepted: 09/05/2023] [Indexed: 09/29/2023] Open
Abstract
Autophagy is a self-defense and self-degrading intracellular system involved in the recycling and elimination of the payload of cytoplasmic redundant components, aggregated or misfolded proteins and intracellular pathogens to maintain cell homeostasis and physiological function. Autophagy is activated in response to metabolic stress or starvation to maintain homeostasis in cells by updating organelles and dysfunctional proteins. In neurodegenerative diseases, such as cerebral ischemia, autophagy is disturbed, e.g., as a result of the pathological accumulation of proteins associated with Alzheimer's disease and their structural changes. Postischemic brain neurodegeneration, such as Alzheimer's disease, is characterized by the accumulation of amyloid and tau protein. After cerebral ischemia, autophagy was found to be activated in neuronal, glial and vascular cells. Some studies have shown the protective properties of autophagy in postischemic brain, while other studies have shown completely opposite properties. Thus, autophagy is now presented as a double-edged sword with possible therapeutic potential in brain ischemia. The exact role and regulatory pathways of autophagy that are involved in cerebral ischemia have not been conclusively elucidated. This review aims to provide a comprehensive look at the advances in the study of autophagy behavior in neuronal, glial and vascular cells for ischemic brain injury. In addition, the importance of autophagy in neurodegeneration after cerebral ischemia has been highlighted. The review also presents the possibility of modulating the autophagy machinery through various compounds on the development of neurodegeneration after cerebral ischemia.
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Affiliation(s)
- Ryszard Pluta
- Department of Pathophysiology, Medical University of Lublin, 20-090 Lublin, Poland
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7
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Leem YH, Kim DY, Park JE, Kim HS. Necrosulfonamide exerts neuroprotective effect by inhibiting necroptosis, neuroinflammation, and α-synuclein oligomerization in a subacute MPTP mouse model of Parkinson's disease. Sci Rep 2023; 13:8783. [PMID: 37258791 DOI: 10.1038/s41598-023-35975-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 05/26/2023] [Indexed: 06/02/2023] Open
Abstract
Parkinson's disease (PD) is an incurable movement disorder characterized by dopaminergic cell loss, neuroinflammation, and α-synuclein pathology. Herein, we investigated the therapeutic effects of necrosulfonamide (NSA), a specific inhibitor of mixed lineage kinase domain-like protein (MLKL), in a subacute 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) mouse model of PD. MLKL is an executor of necroptosis, a programmed cell death pathway that causes inflammation. Repeated administration of NSA resulted in the recovery of impaired motor performance and dopaminergic degeneration. Furthermore, NSA inhibited the phosphorylation, ubiquitylation, and oligomerization of MLKL, all of which are associated with MLKL cell death-inducing activity in dopaminergic cells in the substantia nigra (SN). NSA also inhibited microglial activation and reactive astrogliosis as well as the MPTP-induced expression of proinflammatory molecules such as tumor necrosis factor-α, interleukin-1β, inducible nitric oxide synthase, and cystatin F. Furthermore, NSA inhibited α-synuclein oligomerization and phosphorylation in the SN of MPTP-treated mice by inhibiting the activity of glycogen synthase kinase 3β and matrix metalloproteinase-3. In conclusion, NSA has anti-necroptotic, anti-inflammatory, and anti-synucleinopathic effects on PD pathology. Therefore, NSA is a potential therapeutic candidate for PD.
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Affiliation(s)
- Yea-Hyun Leem
- Department of Molecular Medicine and Inflammation-Cancer Microenvironment Research Center, School of Medicine, Ewha Womans University, 808-1 Magok-Dong, Gangseo-gu, Seoul, 07804, South Korea
| | - Do-Yeon Kim
- Department of Molecular Medicine and Inflammation-Cancer Microenvironment Research Center, School of Medicine, Ewha Womans University, 808-1 Magok-Dong, Gangseo-gu, Seoul, 07804, South Korea
| | - Jung-Eun Park
- Department of Molecular Medicine and Inflammation-Cancer Microenvironment Research Center, School of Medicine, Ewha Womans University, 808-1 Magok-Dong, Gangseo-gu, Seoul, 07804, South Korea
| | - Hee-Sun Kim
- Department of Molecular Medicine and Inflammation-Cancer Microenvironment Research Center, School of Medicine, Ewha Womans University, 808-1 Magok-Dong, Gangseo-gu, Seoul, 07804, South Korea.
- Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul, South Korea.
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8
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Pei X, Tian M, Wang Y, Xin Y, Jiang J, Wang Y, Gong Y. Advances in the knowledge on the role of apoptosis repressor with caspase recruitment domain in hemorrhagic stroke. JOURNAL OF INTENSIVE MEDICINE 2023; 3:138-143. [PMID: 37188117 PMCID: PMC10175730 DOI: 10.1016/j.jointm.2022.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 10/03/2022] [Accepted: 11/23/2022] [Indexed: 05/17/2023]
Abstract
The apoptosis repressor with caspase recruitment domain (ARC) plays a critical role in extrinsic apoptosis initiation via death receptor ligands, physiological stress, infection response in a tissue-dependent manner, endoplasmic reticulum (ER) stress, genotoxic drugs, ionizing radiation, oxidative stress, and hypoxia. Recent studies have suggested that regulating apoptosis-related pathways can improve outcomes for patients with neurological diseases, such as hemorrhagic stroke. ARC expression is significantly correlated with acute cerebral hemorrhage. However, the mechanism by which it mediates the anti-apoptosis pathway remains poorly known. Here, we discuss the function of ARC in hemorrhagic stroke and argue that it could serve as an effective target for the treatment of hemorrhagic stroke.
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Affiliation(s)
- Xu Pei
- Department of Critical Care Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Mi Tian
- Department of Critical Care Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Yao Wang
- Department of Critical Care Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Yuewen Xin
- Department of Critical Care Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Junliang Jiang
- Department of Critical Care Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Yunyun Wang
- Department of Critical Care Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Ye Gong
- Department of Critical Care Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China
- Corresponding author: Ye Gong, Department of Critical Care Medicine, Huashan Hospital, Fudan University, 12 Urumqi Road, Shanghai 200040, China.
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9
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Fan GB, Li Y, Xu GS, Zhao AY, Jin HJ, Sun SQ, Qi SH. Propofol Inhibits Ferroptotic Cell Death Through the Nrf2/Gpx4 Signaling Pathway in the Mouse Model of Cerebral Ischemia-Reperfusion Injury. Neurochem Res 2023; 48:956-966. [PMID: 36402927 DOI: 10.1007/s11064-022-03822-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 10/29/2022] [Accepted: 11/09/2022] [Indexed: 11/21/2022]
Abstract
Ferroptosis is characterized by excessive accumulation of iron and lipid peroxides, which are involved in ischemia, reperfusion-induced organ injury, and stroke. Propofol, an anesthetic agent, has neuroprotective effects due to its potent antioxidant, anti-ischemic, and anti-inflammatory properties. However, the relationship between propofol and ferroptosis is still unclear. In the current study, we elucidated the role of ferroptosis in the neuroprotective effect of propofol in mouse brains subjected to cerebral ischemia reperfusion injury (CIRI). Ferroptosis was confirmed by Western blotting assays, transmission electron microscopy, and glutathione assays. Propofol regulated Nrf2/Gpx4 signaling, enhanced antioxidant potential, inhibited the accumulation of lipid peroxides in CIRI-affected neurons, and significantly reversed CIRI-induced ferroptosis. Additionally, Gpx4 inhibitor RSL3 and Nrf2 inhibitor ML385 attenuated the effects of propofol on antioxidant capacity, lipid peroxidation, and ferroptosis in CIRI-affected neurons. Our data support a protective role of propofol against ferroptosis as a cause of cell death in mice with CIRI. Propofol protected against CIRI-induced ferroptosis partly by regulating the Nrf2/Gpx4 signaling pathway. These findings may contribute to the development of future therapies targeting ferroptosis induced by CIRI.
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Affiliation(s)
- Gui-Bo Fan
- Department of Anesthesiology, The 4th Affiliated Hospital of Harbin Medical University, 37 Yiyuan Road, Harbin, 150001, Heilongjiang, China
| | - Yan Li
- Department of Anesthesiology, The 4th Affiliated Hospital of Harbin Medical University, 37 Yiyuan Road, Harbin, 150001, Heilongjiang, China
| | - Gao-Shuo Xu
- Department of Anesthesiology, The 4th Affiliated Hospital of Harbin Medical University, 37 Yiyuan Road, Harbin, 150001, Heilongjiang, China
| | - A-Yang Zhao
- Department of Anesthesiology, The 4th Affiliated Hospital of Harbin Medical University, 37 Yiyuan Road, Harbin, 150001, Heilongjiang, China
| | - Hong-Jiang Jin
- Department of Anesthesiology, The 4th Affiliated Hospital of Harbin Medical University, 37 Yiyuan Road, Harbin, 150001, Heilongjiang, China
| | - Si-Qi Sun
- Department of Anesthesiology, The 4th Affiliated Hospital of Harbin Medical University, 37 Yiyuan Road, Harbin, 150001, Heilongjiang, China
| | - Si-Hua Qi
- Department of Anesthesiology, The 4th Affiliated Hospital of Harbin Medical University, 37 Yiyuan Road, Harbin, 150001, Heilongjiang, China.
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10
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Abstract
Necroptosis, or programmed necrosis, is an inflammatory form of cell death with important functions in host defense against pathogens and tissue homeostasis. The four cytosolic receptor-interacting protein kinase homotypic interaction motif (RHIM)-containing adaptor proteins RIPK1, RIPK3, TRIF (also known as TICAM1) and ZBP1 mediate necroptosis induction in response to infection and cytokine or innate immune receptor activation. Activation of the RHIM adaptors leads to phosphorylation, oligomerization and membrane targeting of the necroptosis effector protein mixed lineage kinase domain-like (MLKL). Active MLKL induces lesions on the plasma membrane, leading to the release of pro-inflammatory damage-associated molecular patterns (DAMPs). Thus, activities of the RHIM adaptors and MLKL are tightly regulated by posttranslational modifications to prevent inadvertent release of immunogenic contents. In this Cell Science at a Glance article and the accompanying poster, we provide an overview of the regulatory mechanisms of necroptosis and its biological functions in tissue homeostasis, pathogen infection and other inflammatory diseases.
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Affiliation(s)
- Kidong Kang
- Department of Immunology, Duke University School of Medicine, DUMC 3010, Durham, NC 27710, USA
| | - Christa Park
- Immunology and Microbiology Program, University of Massachusetts Chan Medical School, Worcester, MA 01605, USA
| | - Francis Ka-Ming Chan
- Department of Immunology, Duke University School of Medicine, DUMC 3010, Durham, NC 27710, USA
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Cell Death Mechanisms in Cerebral Ischemia-Reperfusion Injury. Neurochem Res 2022; 47:3525-3542. [PMID: 35976487 DOI: 10.1007/s11064-022-03697-8] [Citation(s) in RCA: 45] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 07/11/2022] [Accepted: 07/14/2022] [Indexed: 10/15/2022]
Abstract
Ischemic stroke is one of the major causes of morbidity and mortality, affecting millions of people worldwide. Inevitably, the interruption of cerebral blood supply after ischemia may promote a cascade of pathophysiological processes. Moreover, the subsequent restoration of blood flow and reoxygenation may further aggravate brain tissue injury. Although recombinant tissue plasminogen activator (rt-PA) is the only approved therapy for restoring blood perfusion, the reperfusion injury and the narrow therapeutic time window restrict its application for most stroke patients. Increasing evidence indicates that multiple cell death mechanisms are relevant to cerebral ischemia-reperfusion injury, including apoptosis, necrosis, necroptosis, autophagy, pyroptosis, ferroptosis, and so on. Therefore, it is crucial to comprehend various cell death mechanisms and their interactions. In this review, we summarize the various signaling pathways underlying cerebral ischemia-reperfusion injury and elaborate on the crosstalk between the different mechanisms.
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12
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Qin C, Yang S, Chu YH, Zhang H, Pang XW, Chen L, Zhou LQ, Chen M, Tian DS, Wang W. Signaling pathways involved in ischemic stroke: molecular mechanisms and therapeutic interventions. Signal Transduct Target Ther 2022; 7:215. [PMID: 35794095 PMCID: PMC9259607 DOI: 10.1038/s41392-022-01064-1] [Citation(s) in RCA: 174] [Impact Index Per Article: 87.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 06/01/2022] [Accepted: 06/15/2022] [Indexed: 02/07/2023] Open
Abstract
Ischemic stroke is caused primarily by an interruption in cerebral blood flow, which induces severe neural injuries, and is one of the leading causes of death and disability worldwide. Thus, it is of great necessity to further detailly elucidate the mechanisms of ischemic stroke and find out new therapies against the disease. In recent years, efforts have been made to understand the pathophysiology of ischemic stroke, including cellular excitotoxicity, oxidative stress, cell death processes, and neuroinflammation. In the meantime, a plethora of signaling pathways, either detrimental or neuroprotective, are also highly involved in the forementioned pathophysiology. These pathways are closely intertwined and form a complex signaling network. Also, these signaling pathways reveal therapeutic potential, as targeting these signaling pathways could possibly serve as therapeutic approaches against ischemic stroke. In this review, we describe the signaling pathways involved in ischemic stroke and categorize them based on the pathophysiological processes they participate in. Therapeutic approaches targeting these signaling pathways, which are associated with the pathophysiology mentioned above, are also discussed. Meanwhile, clinical trials regarding ischemic stroke, which potentially target the pathophysiology and the signaling pathways involved, are summarized in details. Conclusively, this review elucidated potential molecular mechanisms and related signaling pathways underlying ischemic stroke, and summarize the therapeutic approaches targeted various pathophysiology, with particular reference to clinical trials and future prospects for treating ischemic stroke.
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Affiliation(s)
- Chuan Qin
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Sheng Yang
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Yun-Hui Chu
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Hang Zhang
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xiao-Wei Pang
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Lian Chen
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Luo-Qi Zhou
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Man Chen
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Dai-Shi Tian
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Wei Wang
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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13
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Johnson AC, Uhlig F, Einwag Z, Cataldo N, Erdos B. The neuroendocrine stress response impairs hippocampal vascular function and memory in male and female rats. Neurobiol Dis 2022; 168:105717. [PMID: 35385769 PMCID: PMC9018625 DOI: 10.1016/j.nbd.2022.105717] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 03/23/2022] [Accepted: 03/29/2022] [Indexed: 11/24/2022] Open
Abstract
Chronic psychological stress affects brain regions involved in memory such as the hippocampus and accelerates age-related cognitive decline, including in Alzheimer's disease and vascular dementia. However, little is known about how chronic stress impacts hippocampal vascular function that is critically involved in maintaining neurocognitive health that could contribute to stress-related memory dysfunction. Here, we used a novel experimental rat model that mimics the neuroendocrine and cardiovascular aspects of chronic stress to determine how the neuroendocrine components of the stress response affect hippocampal function. We studied both male and female rats to determine potential sex differences in the susceptibility of the hippocampus and its vasculature to neuroendocrine stress-induced dysfunction. We show that activation of neuroendocrine stress pathways impaired the vasoreactivity of hippocampal arterioles to mediators involved in coupling neuronal activity with local blood flow that was associated with impaired memory function. Interestingly, we found more hippocampal arteriolar dysfunction and scarcer hippocampal microvasculature in male compared to female rats that was associated with greater memory impairment, suggesting the male sex may be at increased risk of neuroendocrine-derived hippocampal dysfunction during chronic stress. Overall, this study revealed the therapeutic potential of targeting hippocampal arterioles to prevent or slow memory decline in the setting of prolonged and/or unavoidable stress.
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Affiliation(s)
- Abbie C Johnson
- Department of Neurological Sciences, University of Vermont Larner College of Medicine, Burlington, VT, 05405, USA.
| | - Friederike Uhlig
- Department of Pharmacology, University of Vermont Larner College of Medicine, Burlington, VT, 05405, USA
| | - Zachary Einwag
- Department of Pharmacology, University of Vermont Larner College of Medicine, Burlington, VT, 05405, USA
| | - Noelle Cataldo
- Department of Pharmacology, University of Vermont Larner College of Medicine, Burlington, VT, 05405, USA
| | - Benedek Erdos
- Department of Pharmacology, University of Vermont Larner College of Medicine, Burlington, VT, 05405, USA
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14
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Mercau ME, Patwa S, Bhat KPL, Ghosh S, Rothlin CV. Cell death in development, maintenance, and diseases of the nervous system. Semin Immunopathol 2022; 44:725-738. [PMID: 35508671 DOI: 10.1007/s00281-022-00938-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 04/12/2022] [Indexed: 02/07/2023]
Abstract
Cell death, be it of neurons or glial cells, marks the development of the nervous system. Albeit relatively less so than in tissues such as the gut, cell death is also a feature of nervous system homeostasis-especially in context of adult neurogenesis. Finally, cell death is commonplace in acute brain injuries, chronic neurodegenerative diseases, and in some central nervous system tumors such as glioblastoma. Recent studies are enumerating the various molecular modalities involved in the execution of cells. Intimately linked with cell death are mechanisms of disposal that remove the dead cell and bring about a tissue-level response. Heretofore, the association between these methods of dying and physiological or pathological responses has remained nebulous. It is envisioned that careful cartography of death and disposal may reveal novel understandings of disease states and chart new therapeutic strategies in the near future.
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Affiliation(s)
- Maria E Mercau
- Department of Immunobiology, School of Medicine, Yale University, New Haven, CT, USA
| | - Siraj Patwa
- Department of Immunobiology, School of Medicine, Yale University, New Haven, CT, USA
| | - Krishna P L Bhat
- Department of Translational Molecular Pathology, Division of Pathology-Lab Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Sourav Ghosh
- Department of Neurology, School of Medicine, Yale University, New Haven, CT, USA.,Department of Pharmacology, School of Medicine, Yale University, New Haven, CT, USA
| | - Carla V Rothlin
- Department of Immunobiology, School of Medicine, Yale University, New Haven, CT, USA. .,Department of Pharmacology, School of Medicine, Yale University, New Haven, CT, USA.
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15
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Fujikawa DG. Programmed Mechanisms of Status Epilepticus-induced Neuronal Necrosis. Epilepsia Open 2022; 8 Suppl 1:S25-S34. [PMID: 35278284 PMCID: PMC10173844 DOI: 10.1002/epi4.12593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 03/05/2022] [Indexed: 11/11/2022] Open
Abstract
Excitotoxicity is the underlying mechanism for all acute neuronal injury, from cerebral ischemia, status epilepticus, traumatic CNS injury and hypoglycemia. It causes morphological neuronal necrosis, and it triggers a programmed cell death program. Excessive calcium entry through the NMDA-receptor-operated cation channel activates two key enzymes-calpain I and neuronal nitric oxide synthase (nNOS). Calpain I, a cytosolic enzyme, translocates to mitochondrial and lysosomal membranes, causing release of cytochrome c, endonuclease G and apoptosis-inducing factor (AIF) from mitochondria and DNase II and cathepsins B and D from lysosomes. These all translocate to neuronal nuclei, creating DNA damage, which activates poly(ADP) ribose polymerase-1 (PARP-1) to form excessive amounts of poly(ADP) ribose (PAR) polymers, which translocate to mitochondrial membranes, causing release of truncated AIF (tAIF). The free radicals that are released from mitochondria and peroxynitrite, formed from nitric oxide (NO) from nNOS catalysis of L-arginine to L-citrulline, damage mitochondrial and lysosomal membranes and DNA. The end result is the necrotic death of neurons. Another programmed necrotic pathway, necroptosis, occurs through a parallel pathway. As investigators of necroptosis do not recognize the excitotoxic pathway, it is unclear to what extent each contributes to programmed neuronal necrosis. We are studying the extent to which each contributes to acute neuronal necrosis and the extent of cross-talk between these pathways.
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Affiliation(s)
- Denson G Fujikawa
- VA Greater Los Angeles Healthcare System, CA and Department of Neurology and Brain Research Institute, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
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16
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Abstract
Klotho gene was originally recognized as a putative aging-suppressor and its prominent age-regulating effects are mostly attributed to the modulation of mineral homeostasis in the kidney. However, recent studies link alterations in hippocampal Klotho expression with cognitive impairment and neurodegenerative diseases. This suggests that hippocampal neurons require Klotho for health and proper functionality. Klotho protects against neuronal dysfunction and regulates several intracellular signaling pathways including oxidative stress response, inflammation, DNA damage, autophagy, endoplasmic reticulum stress response, and multiple types of cell death. Specifically, this chapter covers the current knowledge as to how Klotho protein affects the hippocampal neuronal cells, with special attention paid to underlying molecular mechanisms, and thus influences hippocampal development, hippocampal-dependent cognition, behavior, and motor skills as well as mediates neurodegenerative processes.
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Affiliation(s)
- Jennifer Mytych
- Department of Biotechnology, Institute of Biology and Biotechnology, Collegium Scientarium Naturalium, University of Rzeszow, Werynia, Poland.
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17
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Yan WT, Yang YD, Hu XM, Ning WY, Liao LS, Lu S, Zhao WJ, Zhang Q, Xiong K. Do pyroptosis, apoptosis, and necroptosis (PANoptosis) exist in cerebral ischemia? Evidence from cell and rodent studies. Neural Regen Res 2022; 17:1761-1768. [PMID: 35017436 PMCID: PMC8820688 DOI: 10.4103/1673-5374.331539] [Citation(s) in RCA: 67] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Some scholars have recently developed the concept of PANoptosis in the study of infectious diseases where pyroptosis, apoptosis and necroptosis act in consort in a multimeric protein complex, PANoptosome. This allows all the components of PANoptosis to be regulated simultaneously. PANoptosis provides a new way to study the regulation of cell death, in that different types of cell death may be regulated at the same time. To test whether PANoptosis exists in diseases other than infectious diseases, we chose cerebral ischemia/reperfusion injury as the research model, collected articles researching cerebral ischemia/reperfusion from three major databases, obtained the original research data from these articles by bibliometrics, data mining and other methods, then integrated and analyzed these data. We selected papers that investigated at least two of the components of PANoptosis to check its occurrence in ischemia/reperfusion. In the cell model simulating ischemic brain injury, pyroptosis, apoptosis and necroptosis occur together and this phenomenon exists widely in different passage cell lines or primary neurons. Pyroptosis, apoptosis and necroptosis also occurred in rat and mouse models of ischemia/reperfusion injury. This confirms that PANoptosis is observed in ischemic brain injury and indicates that PANoptosis can be a target in the regulation of various central nervous system diseases.
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Affiliation(s)
- Wei-Tao Yan
- Department of Neurobiology and Human Anatomy, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China
| | - Yan-Di Yang
- Department of Neurobiology and Human Anatomy, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China
| | - Xi-Min Hu
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Wen-Ya Ning
- Department of Human Resources, Third Xiangya Hospital of Central South University, Changsha, Hunan Province, China
| | - Lyu-Shuang Liao
- Department of Neurobiology and Human Anatomy, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China
| | - Shuang Lu
- Department of Neurobiology and Human Anatomy, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China
| | - Wen-Juan Zhao
- Department of Neurobiology and Human Anatomy, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China
| | - Qi Zhang
- Department of Neurobiology and Human Anatomy, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China
| | - Kun Xiong
- Department of Neurobiology and Human Anatomy, School of Basic Medical Science, Central South University; Hunan Key Laboratory of Ophthalmology, Changsha, Hunan Province, China
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18
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Huang L, Zhou Y, Gou ZX, Zhang F, Lu LQ. Docosahexaenoic acid reduces hypoglycemia-induced neuronal necroptosis via the peroxisome proliferator-activated receptor γ/nuclear factor-κB pathway. Brain Res 2022; 1774:147708. [PMID: 34785255 DOI: 10.1016/j.brainres.2021.147708] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 10/31/2021] [Accepted: 11/01/2021] [Indexed: 11/02/2022]
Abstract
DHA has been shown to be neuroprotective and important to neurogenesis, but its role in HG-induced brain injury and the underlying mechanisms remain unknown. To elucidate the therapeutic effect of DHA, we established a mouse model with insulin-induced hypoglycemic brain injury and an in vitro model of HT-22 cells using a sugar-free medium. DHA treatment significantly reduced neuronal death and improved HG-induced learning and memory deficits. Moreover, DHA inhibited neuronal necroptosis and decreased the concentrations of TNF-α, IL-1β and TNFR1. DHA also activated PPAR-γ and suppressed the NF-κB pathway in mouse brain tissues. In vitro, DHA treatment restored the viability and decreased necroptosis of HT-22 cells treated with glucose deprivation. However, the inhibition of PPAR-γ with T0070907 reversed neuroprotective and anti-necroptosis effects of DHA in HG-induced brain injury, which is associated with the activation of the downstream NF-κB pathway. We conclude that DHA displays a protective effect against HG-induced brain injury through the PPAR-γ/NF-κB pathway and represents a promising method to prevent HG-induced brain injury.
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Affiliation(s)
- Lin Huang
- Department of Neonatology, Sichuan Provincial Maternity and Child Health Care Hospital, No. 290 West Second Street, Shayan Road, 610031, Sichuan, China; Clinical Medical College and The First Affiliated Hospital of ChengDu Medical College Chengdu 610000, Sichuan, China
| | - Yue Zhou
- Clinical Medical College and The First Affiliated Hospital of ChengDu Medical College Chengdu 610000, Sichuan, China
| | - Zhi-Xian Gou
- Clinical Medical College and The First Affiliated Hospital of ChengDu Medical College Chengdu 610000, Sichuan, China
| | - Feng Zhang
- Clinical Medical College and The First Affiliated Hospital of ChengDu Medical College Chengdu 610000, Sichuan, China
| | - Li-Qun Lu
- Clinical Medical College and The First Affiliated Hospital of ChengDu Medical College Chengdu 610000, Sichuan, China.
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19
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Yang T, Guo R, Ofengeim D, Hwang JY, Zukin RS, Chen J, Zhang F. Molecular and Cellular Mechanisms of Ischemia-Induced Neuronal Death. Stroke 2022. [DOI: 10.1016/b978-0-323-69424-7.00005-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Emerging immune and cell death mechanisms in stroke: Saponins as therapeutic candidates. Brain Behav Immun Health 2021; 9:100152. [PMID: 34589895 PMCID: PMC8474497 DOI: 10.1016/j.bbih.2020.100152] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 09/28/2020] [Indexed: 12/15/2022] Open
Abstract
The complexity of the ischemic cascade is based on the integrated crosstalk of every cell type in the neurovascular unit. Depending on the features of the ischemic insult, several cell death mechanisms are triggered, such as apoptosis, necroptosis, ferroptosis/oxytosis, ETosis or pyroptosis, leading to reactive astrogliosis. However, emerging evidence demonstrates a dual role for the immune system in stroke pathophysiology, where it exerts both detrimental and also beneficial functions. In this review, we discuss the relevance of several cell death modalities and the dual role of the immune system in stroke pathophysiology. We also provide an overview of some emerging immunomodulatory therapeutic strategies, amongst which saponins, which are promising candidates that exert multiple pharmacological effects. Several cell death mechanisms coexist in stroke pathophysiology. Neurons are more vulnerable to necroptosis than glial cells. Inhibitors of receptor-interacting protein kinases and of ferroptosis induce neuroprotection. Saponins exert modulatory effects on inflammation and neuronal cell death in stroke.
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21
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Jantas D, Lasoń W. Preclinical Evidence for the Interplay between Oxidative Stress and RIP1-Dependent Cell Death in Neurodegeneration: State of the Art and Possible Therapeutic Implications. Antioxidants (Basel) 2021; 10:antiox10101518. [PMID: 34679652 PMCID: PMC8532910 DOI: 10.3390/antiox10101518] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/17/2021] [Accepted: 09/21/2021] [Indexed: 12/15/2022] Open
Abstract
Neurodegenerative diseases are the most frequent chronic, age-associated neurological pathologies having a major impact on the patient’s quality of life. Despite a heavy medical, social and economic burden they pose, no causative treatment is available for these diseases. Among the important pathogenic factors contributing to neuronal loss during neurodegeneration is elevated oxidative stress resulting from a disturbed balance between endogenous prooxidant and antioxidant systems. For many years, it was thought that increased oxidative stress was a cause of neuronal cell death executed via an apoptotic mechanism. However, in recent years it has been postulated that rather programmed necrosis (necroptosis) is the key form of neuronal death in the course of neurodegenerative diseases. Such assumption was supported by biochemical and morphological features of the dying cells as well as by the fact that various necroptosis inhibitors were neuroprotective in cellular and animal models of neurodegenerative diseases. In this review, we discuss the relationship between oxidative stress and RIP1-dependent necroptosis and apoptosis in the context of the pathomechanism of neurodegenerative disorders. Based on the published data mainly from cellular models of neurodegeneration linking oxidative stress and necroptosis, we postulate that administration of multipotential neuroprotectants with antioxidant and antinecroptotic properties may constitute an efficient pharmacotherapeutic strategy for the treatment of neurodegenerative diseases.
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22
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Xu Y, Zhou Y, Yu D, Hu W, Wu X, Wang J, Huang S, Zhao S, Fan X, Chu Z, Ma L. The Autophagy Signaling Pathway in Necroptosis-Dependent Cerebral Ischemia/Reperfusion Injury. NEUROCHEM J+ 2021. [DOI: 10.1134/s1819712421030132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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23
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Li S, Qu L, Wang X, Kong L. Novel insights into RIPK1 as a promising target for future Alzheimer's disease treatment. Pharmacol Ther 2021; 231:107979. [PMID: 34480965 DOI: 10.1016/j.pharmthera.2021.107979] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 06/30/2021] [Accepted: 08/24/2021] [Indexed: 02/06/2023]
Abstract
Alzheimer's disease (AD) is an intractable neurodegenerative disease showing a clinical manifestation with memory loss, cognitive impairment and behavioral dysfunction. The predominant pathological characteristics of AD include neuronal loss, β-amyloid (Aβ) deposition and hyperphosphorylated Tau induced neurofibrillary tangles (NFTs), while considerable studies proved these could be triggered by neuronal death and neuroinflammation. Receptor-interacting protein kinase 1 (RIPK1) is a serine/threonine kinase existed at the cross-point of cell death and inflammatory signaling pathways. Emerging investigations have shed light on RIPK1 for its potential role in AD progression. The present review makes a bird's eye view on the functions of RIPK1 and mainly focus on the underlying linkages between RIPK1 and AD from comprehensive aspects including neuronal death, Aβ and Tau, inflammasome activation, BBB rupture, AMPK/mTOR, mitochondrial dysfunction and O-glcNAcylation. Moreover, the discovery of RIPK1 inhibitors, ongoing clinical trials along with future RIPK1-targeted therapeutics are also reviewed.
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Affiliation(s)
- Shang Li
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Lailiang Qu
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Xiaobing Wang
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China.
| | - Lingyi Kong
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China.
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24
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Hu C, Huang Y, Wu L, Zhao H, Pac Soo C, Lian Q, Ma D. Apoptosis and necroptosis occur in the different brain regions of hippocampus in a rat model of hypoxia asphyxia. Int J Neurosci 2021; 131:843-853. [PMID: 32345086 DOI: 10.1080/00207454.2020.1759586] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 02/17/2020] [Accepted: 04/08/2020] [Indexed: 10/24/2022]
Abstract
AIM OF THE STUDY Hypoxic-ischemic encephalopathy (HIE) is a major cause of newborn brain injury. Apoptosis and necroptosis are two forms of cell death which may occur in HIE but reported data are yet limited. This study investigates the expression of receptor interacting protein kinase (RIPK) 1 and 3, and caspase3, the key modulators of necroptosis and apoptosis, respectively, in a model of HIE to determine whether both forms of cell death occur in the corresponding brain regions. MATERIALS AND METHODS Postneonatal day 7 Sprague-Dawley rats were subjected to right carotid artery ligation followed by hypoxia or subjected to skin incision under surgical anesthesia without ligation and hypoxia. Neuroglioma (H4) cell was cultured and subjected to 24 h hypoxic insults. Necrostatin-1, a RIPK1 inhibitor, was administered in both in vivo and in vitro settings before insult. RESULTS After hypoxic-ischemic insults, both RIPK1 and RIPK3 expression were significantly increased in the region of hippocampal dentate gyrus in the injurious hemisphere. However, cleaved caspase3 was significantly increased in the hippocampal cornu ammonis 1 region in the injurious hemisphere. After hypoxic insults, RIPK1 and RIPK3 expression was also found in H4 cells. In addition, it was identified that the increased RIPK1 and RIPK3 can be inhibited by necrostatin-1 in both in vivo and in vitro. CONCLUSIONS These data indicated that apoptosis and necroptosis occur in different brain regions of hippocampus in a model of HIE which may suggest that strategies to prevent each form of neuronal death is valuable to be developed.
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Affiliation(s)
- Cong Hu
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
- Anesthetics, Pain Medicine and Intensive Care, Department of Surgery & Cancer, Faculty of Medicine, Imperial College London, Chelsea & Westminster Hospital, London, UK
| | - Yuanyuan Huang
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
- Anesthetics, Pain Medicine and Intensive Care, Department of Surgery & Cancer, Faculty of Medicine, Imperial College London, Chelsea & Westminster Hospital, London, UK
| | - Lingzhi Wu
- Anesthetics, Pain Medicine and Intensive Care, Department of Surgery & Cancer, Faculty of Medicine, Imperial College London, Chelsea & Westminster Hospital, London, UK
| | - Hailin Zhao
- Anesthetics, Pain Medicine and Intensive Care, Department of Surgery & Cancer, Faculty of Medicine, Imperial College London, Chelsea & Westminster Hospital, London, UK
| | - Chen Pac Soo
- Anesthetics, Pain Medicine and Intensive Care, Department of Surgery & Cancer, Faculty of Medicine, Imperial College London, Chelsea & Westminster Hospital, London, UK
| | - Qingquan Lian
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Daqing Ma
- Anesthetics, Pain Medicine and Intensive Care, Department of Surgery & Cancer, Faculty of Medicine, Imperial College London, Chelsea & Westminster Hospital, London, UK
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25
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Choi J, Kwon H, Han PL. Hyperoxygenation Treatment Reduces Beta-amyloid Deposition via MeCP2-dependent Upregulation of MMP-2 and MMP-9 in the Hippocampus of Tg-APP/PS1 Mice. Exp Neurobiol 2021; 30:294-307. [PMID: 34483143 PMCID: PMC8424382 DOI: 10.5607/en21014] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 08/14/2021] [Accepted: 08/15/2021] [Indexed: 12/18/2022] Open
Abstract
Recently we reported that hyperoxygenation treatment reduces amyloid-beta accumulation and rescues cognitive impairment in the Tg-APP/PS1 mouse model of Alzheimer’s disease. In the present study, we continue to investigate the mechanism by which hyperoxygenation reduces amyloid-beta deposition in the brain. Hyperoxygenation treatment induces upregulation of matrix metalloproteinase-2 (MMP-2), MMP-9, and tissue plasminogen activator (tPA), the endopeptidases that can degrade amyloid-beta, in the hippocampus of Tg-APP/PS1 mice. The promoter regions of the three proteinase genes all contain potential binding sites for MeCP2 and Pea3, which are upregulated in the hippocampus after hyperoxygenation. Hyperoxygenation treatment in HT22 neuronal cells increases MeCP2 but not Pea3 expression. In HT22 cells, siRNA-mediated knockdown of Mecp2 decreases Mmp-9 expression and to a lesser extent, Mmp-2 and tPA expression. In mice, siRNA-mediated Mecp2 knockdown in the hippocampus reduces Mmp-9 expression, but not significantly Mmp-2 and tPA expression. The ChIP assay indicates that hyperoxygenation treatment in Tg-APP/PS1 mice increases MeCP2 binding to the promoter regions of Mmp-2, Mmp-9 and tPA genes in the hippocampus. Together, these results suggest that hyperoxygenation increases the expression of MMP-2, MMP-9, and tPA, of which MMP-9 is upregulated via MeCP2 in neuronal cells, and MMP-2 and tPA are upregulated through MeCP2 and other nuclear factors.
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Affiliation(s)
- Juli Choi
- Departments of Brain and Cognitive Sciences, Ewha Womans University, Seoul 03760, Korea
| | - Hyejin Kwon
- Departments of Brain and Cognitive Sciences, Ewha Womans University, Seoul 03760, Korea
| | - Pyung-Lim Han
- Departments of Brain and Cognitive Sciences, Ewha Womans University, Seoul 03760, Korea.,Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
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26
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Liao LS, Lu S, Yan WT, Wang SC, Guo LM, Yang YD, Huang K, Hu XM, Zhang Q, Yan J, Xiong K. The Role of HSP90α in Methamphetamine/Hyperthermia-Induced Necroptosis in Rat Striatal Neurons. Front Pharmacol 2021; 12:716394. [PMID: 34349659 PMCID: PMC8326403 DOI: 10.3389/fphar.2021.716394] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 07/07/2021] [Indexed: 01/07/2023] Open
Abstract
Methamphetamine (METH) is one of the most widely abused synthetic drugs in the world. The users generally present hyperthermia (HT) and psychiatric symptoms. However, the mechanisms involved in METH/HT-induced neurotoxicity remain elusive. Here, we investigated the role of heat shock protein 90 alpha (HSP90α) in METH/HT (39.5°C)-induced necroptosis in rat striatal neurons and an in vivo rat model. METH treatment increased core body temperature and up-regulated LDH activity and the molecular expression of canonical necroptotic factors in the striatum of rats. METH and HT can induce necroptosis in primary cultures of striatal neurons. The expression of HSP90α increased following METH/HT injuries. The specific inhibitor of HSP90α, geldanamycin (GA), and HSP90α shRNA attenuated the METH/HT-induced upregulation of receptor-interacting protein 3 (RIP3), phosphorylated RIP3, mixed lineage kinase domain-like protein (MLKL), and phosphorylated MLKL. The inhibition of HSP90α protected the primary cultures of striatal neurons from METH/HT-induced necroptosis. In conclusion, HSP90α plays an important role in METH/HT-induced neuronal necroptosis and the HSP90α-RIP3 pathway is a promising therapeutic target for METH/HT-induced neurotoxicity in the striatum.
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Affiliation(s)
- Lv-Shuang Liao
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China.,School of Physical Education, Hunan Institute of Science and Technology, Yueyang, China
| | - Shuang Lu
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Wei-Tao Yan
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Shu-Chao Wang
- Center for Medical Research, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Li-Min Guo
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Yan-di Yang
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Kai Huang
- Department of Human Anatomy and Histoembryolog, School of Basic Medical Sciences, Shaoyang University, Shaoyang, China
| | - Xi-Min Hu
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China.,Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China
| | - Qi Zhang
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Jie Yan
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, China.,School of Basic Medical Science, Xinjiang Medical University, Urumqi, China
| | - Kun Xiong
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, China
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27
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Moujalled D, Strasser A, Liddell JR. Molecular mechanisms of cell death in neurological diseases. Cell Death Differ 2021; 28:2029-2044. [PMID: 34099897 PMCID: PMC8257776 DOI: 10.1038/s41418-021-00814-y] [Citation(s) in RCA: 267] [Impact Index Per Article: 89.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 05/20/2021] [Accepted: 05/24/2021] [Indexed: 02/07/2023] Open
Abstract
Tightly orchestrated programmed cell death (PCD) signalling events occur during normal neuronal development in a spatially and temporally restricted manner to establish the neural architecture and shaping the CNS. Abnormalities in PCD signalling cascades, such as apoptosis, necroptosis, pyroptosis, ferroptosis, and cell death associated with autophagy as well as in unprogrammed necrosis can be observed in the pathogenesis of various neurological diseases. These cell deaths can be activated in response to various forms of cellular stress (exerted by intracellular or extracellular stimuli) and inflammatory processes. Aberrant activation of PCD pathways is a common feature in neurodegenerative diseases, such as amyotrophic lateral sclerosis (ALS), Alzheimer's disease, Parkinson's disease, and Huntington's disease, resulting in unwanted loss of neuronal cells and function. Conversely, inactivation of PCD is thought to contribute to the development of brain cancers and to impact their response to therapy. For many neurodegenerative diseases and brain cancers current treatment strategies have only modest effect, engendering the need for investigations into the origins of these diseases. With many diseases of the brain displaying aberrations in PCD pathways, it appears that agents that can either inhibit or induce PCD may be critical components of future therapeutic strategies. The development of such therapies will have to be guided by preclinical studies in animal models that faithfully mimic the human disease. In this review, we briefly describe PCD and unprogrammed cell death processes and the roles they play in contributing to neurodegenerative diseases or tumorigenesis in the brain. We also discuss the interplay between distinct cell death signalling cascades and disease pathogenesis and describe pharmacological agents targeting key players in the cell death signalling pathways that have progressed through to clinical trials.
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Affiliation(s)
- Diane Moujalled
- The Walter and Eliza Hall Institute, Parkville, VIC, Australia.
- Department of Medical Biology, The University of Melbourne, Parkville, VIC, Australia.
| | - Andreas Strasser
- The Walter and Eliza Hall Institute, Parkville, VIC, Australia.
- Department of Medical Biology, The University of Melbourne, Parkville, VIC, Australia.
| | - Jeffrey R Liddell
- Department of Biochemistry and Pharmacology, The University of Melbourne, Parkville, VIC, Australia
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28
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Cui Y, Zhang Y, Zhao X, Shao L, Liu G, Sun C, Xu R, Zhang Z. ACSL4 exacerbates ischemic stroke by promoting ferroptosis-induced brain injury and neuroinflammation. Brain Behav Immun 2021; 93:312-321. [PMID: 33444733 DOI: 10.1016/j.bbi.2021.01.003] [Citation(s) in RCA: 247] [Impact Index Per Article: 82.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 12/13/2020] [Accepted: 01/06/2021] [Indexed: 12/22/2022] Open
Abstract
Acyl-CoA synthetase long-chain family member 4 (ACSL4) is an important isozyme for polyunsaturated fatty acids (PUFAs) metabolism that dictates ferroptosis sensitivity. The role of ACSL4 in the progression of ischemic stroke is unclear. Here, we found that ACSL4 expression was suppressed in the early phase of ischemic stroke and this suppression was induced by HIF-1α. Knockdown of ACSL4 protected mice against brain ischemia, whereas, forced overexpression of ACSL4 exacerbated ischemic brain injury. ACSL4 promoted neuronal death via enhancing lipid peroxidation, a marker of ferroptosis. Moreover, knockdown of ACSL4 inhibited proinflammatory cytokine production in microglia. These data identify ACSL4 as a novel regulator of neuronal death and neuroinflammation, and interventions of ACSL4 expression may provide a potential therapeutic target in ischemic stroke.
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Affiliation(s)
- Yu Cui
- Institute of Neuroregeneration and Neurorehabilitation, Qingdao University, Ningxia Road 308, Qingdao 266071, Shandong, China
| | - Yan Zhang
- Department of Interventional Radiology, The Affiliated Hospital of Qingdao University, Jiangsu Road 16, Qingdao 266000, Shandong, China
| | - Xiaolong Zhao
- Department of Interventional Radiology, The Affiliated Hospital of Qingdao University, Jiangsu Road 16, Qingdao 266000, Shandong, China
| | - Liming Shao
- Department of Interventional Radiology, The Affiliated Hospital of Qingdao University, Jiangsu Road 16, Qingdao 266000, Shandong, China
| | - Guoping Liu
- Department of Interventional Radiology, The Affiliated Hospital of Qingdao University, Jiangsu Road 16, Qingdao 266000, Shandong, China
| | - Chengjian Sun
- Department of Interventional Radiology, The Affiliated Hospital of Qingdao University, Jiangsu Road 16, Qingdao 266000, Shandong, China
| | - Rui Xu
- Department of Interventional Radiology, The Affiliated Hospital of Qingdao University, Jiangsu Road 16, Qingdao 266000, Shandong, China.
| | - Zhaolong Zhang
- Department of Interventional Radiology, The Affiliated Hospital of Qingdao University, Jiangsu Road 16, Qingdao 266000, Shandong, China.
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29
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Li W, Dong Y, Dong Q, Sun H, Zhang Y, Wang Z. The remarkable hypoxia tolerance in Brandt's voles (
Lasiopodomys brandtii
). Eur J Neurosci 2020; 53:1652-1660. [DOI: 10.1111/ejn.15012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 09/19/2020] [Accepted: 10/05/2020] [Indexed: 01/26/2023]
Affiliation(s)
- Wei Li
- School of Basic Medical Sciences Zhengzhou University Zhengzhou Henan Province China
| | - Yanan Dong
- School of Basic Medical Sciences Zhengzhou University Zhengzhou Henan Province China
| | - Qianqian Dong
- School of Life Sciences Zhengzhou University Zhengzhou Henan Province China
| | - Hong Sun
- School of Physical Education (Main campus) Zhengzhou University Zhengzhou Henan Province China
| | - Yifeng Zhang
- School of Life Sciences Zhengzhou University Zhengzhou Henan Province China
| | - Zhenlong Wang
- School of Life Sciences Zhengzhou University Zhengzhou Henan Province China
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30
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Liao S, Apaijai N, Chattipakorn N, Chattipakorn SC. The possible roles of necroptosis during cerebral ischemia and ischemia / reperfusion injury. Arch Biochem Biophys 2020; 695:108629. [PMID: 33068524 DOI: 10.1016/j.abb.2020.108629] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 09/03/2020] [Accepted: 10/12/2020] [Indexed: 02/07/2023]
Abstract
Cell death is a process consequential to cerebral ischemia and cerebral ischemia/reperfusion (I/R) injury. Recent evidence suggest that necroptosis has been involved in the pathogenesis of ischemic brain injury. The mechanism of necroptosis is initiated by an activation of inflammatory receptors including tumor necrosis factor, toll like receptor, and fas ligands. The signals activate the receptor-interacting protein kinase (RIPK) 1, 3, and a mixed-lineage kinase domain-like pseudokinase (MLKL) to instigate necroptosis. RIPK1 inhibitor, necrostatin-1, was developed, and dramatically reduced brain injury following cerebral ischemia in mice. Consequently, necroptosis could be a novel therapeutic target for stroke, which aims to reduce long-term adverse outcomes after cerebral ischemia. Several studies have been conducted to test the roles of necroptosis on cerebral ischemia and cerebral I/R injury, and the efficacy of necrostatin-1 has been tested in those models. Evidence regarding the roles of necroptosis and the effects of necrostatin-1, from in vitro and in vivo studies, has been summarized and discussed. In addition, other therapeutic managements, involving in necroptosis, are also included in this review. We believe that the insights from this review might clarify the clinical perspective and challenges involved in future stroke treatment by targeting the necroptosis pathway.
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Affiliation(s)
- Suchan Liao
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand; Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, 50200, Thailand; Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Nattayaporn Apaijai
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand; Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Nipon Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand; Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, 50200, Thailand; Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Siriporn C Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand; Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, 50200, Thailand; Department of Oral Biology and Diagnostic Sciences, Faculty of Dentistry, Chiang Mai University, Chiang Mai, 50200, Thailand.
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31
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You H, Jin Y, Kang J, Mao Y, Su J, Sun L, Wang L, Meng H. Mitochondrial serine protease Omi/HtrA2 accentuates brain ischemia/reperfusion injury in rats and oxidative stress injury in vitro by modulating mitochondrial stress proteins CHOP and ClpP and physically interacting with mitochondrial fusion protein OPA1. Bioengineered 2020; 11:1058-1070. [PMID: 33016225 PMCID: PMC8291814 DOI: 10.1080/21655979.2020.1822105] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Serine protease Omi/HtrA2, a member of the HtrA family, is closely related to the maintenance of mitochondrial integrity and participates in apoptosis but its role in cerebral ischemia/reperfusion (I/R) injury and cellular oxidative stress response remains unclear. In this study, we found that I/R injury resulted in a time-dependent increase in Omi/HtrA2 expression in rat brain tissue. Inhibition of Omi/HtrA2 significantly inhibited XIAP cleavage in H2O2-induced PC12 cells. In addition, inhibition of Omi/HtrA2 significantly inhibited the up-regulation of mitochondrial stress proteins CHOP and ClpP, significantly reduced mitochondrial aggregation, and attenuated the decline of mitochondrial ΔΨm in PC12 cells. Studies show that there is a physical interaction between Omi/HtrA2 and OPA1. We found that Omi/HtrA2 and OPA1 are closely related to the oxidative stress mitochondrial response in PC12 cells. The current study has demonstrated that Omi/HtrA2 is upregulated in brain I/R injury in vivo and is implicated in mitochondrial response to oxidative stress in vitro by regulating mitochondrial stress proteins CHOP and CLpP and by interacting with mitochondrial cristae remodeling protein OPA1. These findings suggest that Omi/HtrA2 could be a candidate molecular target in diseases that involve oxidative stress such as in I/R injury. Abbreviation: ATP: Adenosine tripHospHate; Bax: BCL2-Associated X; Bcl-2: B-cell lympHoma-2; BSA: Albumin from bovine serum; DMEM: Dulbecco’s Minimum Essential Medium; DMSO: Dimethyl sulfoxide; HSP60: Heat shock protein60, 70; L-OPA1: Long forms of OPA1; Omi/HtrA2: high-temperature-regulated A2; MCAO: Middle cerebral artery occlusion; OPA1: Optic AtropHy; PBS: PHospHate buffered saline; PMSF: pHenylmethyl sulfonylfluoride; ROS: reactive oxygen species; SDS: Sodium dodecyl sulfate; S-OPA1: Short forms of OPA1; TTC: TripHenyltetrazalium chloride; XIAP: X-linked inhibitor apoptosis protein
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Affiliation(s)
- Hailong You
- Department of Pathogenobiology, Jilin University Mycology Research Center, College of Basic Medical Sciences, Jilin University , Changchun, China
| | - Yao Jin
- Department of Pathophysiology, College of Basic Medical Sciences, Jilin University , Changchun, China
| | - Jinsong Kang
- Department of Pathophysiology, College of Basic Medical Sciences, Jilin University , Changchun, China
| | - Ying Mao
- Department of Pathophysiology, College of Basic Medical Sciences, Jilin University , Changchun, China
| | - Jing Su
- Department of Pathophysiology, College of Basic Medical Sciences, Jilin University , Changchun, China
| | - Liankun Sun
- Department of Pathophysiology, College of Basic Medical Sciences, Jilin University , Changchun, China
| | - Li Wang
- Department of Pathogenobiology, Jilin University Mycology Research Center, College of Basic Medical Sciences, Jilin University , Changchun, China
| | - Hao Meng
- Department of Pathophysiology, College of Basic Medical Sciences, Jilin University , Changchun, China.,Department of Neurosurgery, The First Hospital of Jilin University , Changchun, China
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32
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CHIP as a therapeutic target for neurological diseases. Cell Death Dis 2020; 11:727. [PMID: 32908122 PMCID: PMC7481199 DOI: 10.1038/s41419-020-02953-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 08/16/2020] [Accepted: 08/27/2020] [Indexed: 12/12/2022]
Abstract
Carboxy-terminus of Hsc70-interacting protein (CHIP) functions both as a molecular co-chaperone and ubiquitin E3 ligase playing a critical role in modulating the degradation of numerous chaperone-bound proteins. To date, it has been implicated in the regulation of numerous biological functions, including misfolded-protein refolding, autophagy, immunity, and necroptosis. Moreover, the ubiquitous expression of CHIP in the central nervous system suggests that it may be implicated in a wide range of functions in neurological diseases. Several recent studies of our laboratory and other groups have highlighted the beneficial role of CHIP in the pathogenesis of several neurological diseases. The objective of this review is to discuss the possible molecular mechanisms that contribute to the pathogenesis of neurological diseases in which CHIP has a pivotal role, such as stroke, intracerebral hemorrhage, Alzheimer's disease, Parkinson's disease, and polyglutamine diseases; furthermore, CHIP mutations could also cause neurodegenerative diseases. Based on the available literature, CHIP overexpression could serve as a promising therapeutic target for several neurological diseases.
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33
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Mifflin L, Ofengeim D, Yuan J. Receptor-interacting protein kinase 1 (RIPK1) as a therapeutic target. Nat Rev Drug Discov 2020; 19:553-571. [PMID: 32669658 PMCID: PMC7362612 DOI: 10.1038/s41573-020-0071-y] [Citation(s) in RCA: 220] [Impact Index Per Article: 55.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/20/2020] [Indexed: 02/08/2023]
Abstract
Receptor-interacting serine/threonine-protein kinase 1 (RIPK1) is a key mediator of cell death and inflammation. The unique hydrophobic pocket in the allosteric regulatory domain of RIPK1 has enabled the development of highly selective small-molecule inhibitors of its kinase activity, which have demonstrated safety in preclinical models and clinical trials. Potential applications of these RIPK1 inhibitors for the treatment of monogenic and polygenic autoimmune, inflammatory, neurodegenerative, ischaemic and acute conditions, such as sepsis, are emerging. This article reviews RIPK1 biology and disease-associated mutations in RIPK1 signalling pathways, highlighting clinical trials of RIPK1 inhibitors and potential strategies to mitigate development challenges. Receptor-interacting serine/threonine-protein kinase 1 (RIPK1) — a key mediator of cell death and inflammation — is activated in human diseases. Here, Yuan and colleagues discuss current understanding of RIPK1 biology and its association with diseases including inflammatory and autoimmune disorders, neurodegenerative diseases and sepsis. The clinical development of small-molecule RIPK1 inhibitors and associated challenges are discussed.
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Affiliation(s)
- Lauren Mifflin
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA
| | - Dimitry Ofengeim
- Rare and Neurologic Disease Research, Sanofi, Framingham, MA, USA
| | - Junying Yuan
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA.
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34
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Wang M, Wan H, Wang S, Liao L, Huang Y, Guo L, Liu F, Shang L, Huang J, Ji D, Xia X, Jiang B, Chen D, Xiong K. RSK3 mediates necroptosis by regulating phosphorylation of RIP3 in rat retinal ganglion cells. J Anat 2020; 237:29-47. [PMID: 32162697 PMCID: PMC7309291 DOI: 10.1111/joa.13185] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 02/19/2020] [Accepted: 02/24/2020] [Indexed: 12/15/2022] Open
Abstract
Receptor-interacting protein 3 (RIP3) plays an important role in the necroptosis signaling pathway. Our previous studies have shown that the RIP3/mixed lineage kinase domain-like protein (MLKL)-mediated necroptosis occurs in retinal ganglion cell line 5 (RGC-5) following oxygen-glucose deprivation (OGD). However, upstream regulatory pathways of RIP3 are yet to be uncovered. The purpose of the present study was to investigate the role of p90 ribosomal protein S6 kinase 3 (RSK3) in the phosphorylation of RIP3 in RGC-5 cell necroptosis following OGD. Our results showed that expression of RSK3, RIP3, and MLKL was upregulated in necroptosis of RGC-5 after OGD. A computer simulation based on our preliminary results indicated that RSK3 might interact with RIP3, which was subsequently confirmed by co-immunoprecipitation. Further, we found that the application of a specific RSK inhibitor, LJH685, or rsk3 small interfering RNA (siRNA), downregulated the phosphorylation of RIP3. However, the overexpression of rip3 did not affect the expression of RSK3, thereby indicating that RSK3 could be a possible upstream regulator of RIP3 phosphorylation in OGD-induced necroptosis of RGC-5 cells. Moreover, our in vivo results showed that pretreatment with LJH685 before acute high intraocular pressure episodes could reduce the necroptosis of retinal neurons and improve recovery of impaired visual function. Taken together, our findings suggested that RSK3 might work as an upstream regulator of RIP3 phosphorylation during RGC-5 necroptosis.
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Affiliation(s)
- Mi Wang
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
| | - Hao Wan
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
| | - Shuchao Wang
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
| | - Lvshuang Liao
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
| | - Yanxia Huang
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
| | - Limin Guo
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
| | - Fengxia Liu
- Department of Human AnatomySchool of Basic Medical ScienceXinjiang Medical UniversityUrumqiChina
| | - Lei Shang
- Jiangxi Research Institute of Ophthalmology and Visual SciencesAffiliated Eye Hospital of Nanchang UniversityNanchangChina
| | - Jufang Huang
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
- Hunan Key Laboratory of OphthalmologyChangshaChina
| | - Dan Ji
- Hunan Key Laboratory of OphthalmologyChangshaChina
- Department of OphthalmologyXiangya HospitalCentral South UniversityChangshaChina
| | - Xiaobo Xia
- Hunan Key Laboratory of OphthalmologyChangshaChina
- Department of OphthalmologyXiangya HospitalCentral South UniversityChangshaChina
| | - Bin Jiang
- Department of OphthalmologyThe Second Xiangya HospitalCentral South UniversityChangshaChina
| | - Dan Chen
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
- Hunan Key Laboratory of OphthalmologyChangshaChina
| | - Kun Xiong
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
- Hunan Key Laboratory of OphthalmologyChangshaChina
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35
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Kanno H, Ozawa H, Handa K, Murakami T, Itoi E. Changes in Expression of Receptor-Interacting Protein Kinase 1 in Secondary Neural Tissue Damage Following Spinal Cord Injury. Neurosci Insights 2020; 15:2633105520906402. [PMID: 32524089 PMCID: PMC7236572 DOI: 10.1177/2633105520906402] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 01/23/2020] [Indexed: 01/01/2023] Open
Abstract
Introduction: Necroptosis is a form of programmed cell death that is different from apoptotic cell death. Receptor-interacting protein kinase 1 (RIPK1) plays a particularly important function in necroptosis execution. This study investigated changes in expression of RIPK1 in secondary neural tissue damage following spinal cord injury in mice. The time course of the RIPK1 expression was also compared with that of apoptotic cell death in the lesion site. Methods and Materials: Immunostaining for RIPK1 was performed at different time points after spinal cord injury. The protein expressions of RIPK1 were determined by western blot. The RIPK1 expressions in various neural cells were investigated using immunohistochemistry. To investigate the time course of apoptotic cell death, TUNEL-positive cells were counted at the different time points. To compare the incidence of necroptosis and apoptosis, the RIPK1-labeled sections were co-stained with TUNEL. Results: The RIPK1 expression was significantly upregulated in the injured spinal cord. The upregulation of RIPK1 expression was observed in neurons, astrocytes, and oligodendrocytes. The increase in RIPK1 expression started at 4 hours and peaked at 3 days after injury. Time course of the RIPK1 expression was similar to that of apoptosis detected by TUNEL. Interestingly, the increased expression of RIPK1 was rarely observed in the TUNEL-positive cells. Furthermore, the number of RIPK1-positive cells was significantly higher than that of TUNEL-positive cells. Conclusions: This study demonstrated that the expression of RIPK1 increased in various neural cells and peaked at 3 days following spinal cord injury. The temporal change of the RIPK1 expression was analogous to that of apoptosis at the lesion site. However, the increase in RIPK1 expression was barely seen in the apoptotic cells. These findings suggested that the RIPK1 might contribute to the pathological mechanism of the secondary neural tissue damage after spinal cord injury.
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Affiliation(s)
- Haruo Kanno
- Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hiroshi Ozawa
- Department of Orthopaedic Surgery, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Kyoichi Handa
- Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Taishi Murakami
- Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Eiji Itoi
- Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
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36
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Motomatsu Y, Sakurai M, Onitsuka H, Abe K, Shiose A. Hypothermia Inhibits the Expression of Receptor Interacting Protein Kinases 1 and 3 After Transient Spinal Cord Ischaemia in Rabbits. Eur J Vasc Endovasc Surg 2020; 59:824-833. [DOI: 10.1016/j.ejvs.2019.12.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 10/30/2019] [Accepted: 12/02/2019] [Indexed: 12/14/2022]
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37
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Cell Death Pathways in Ischemic Stroke and Targeted Pharmacotherapy. Transl Stroke Res 2020; 11:1185-1202. [PMID: 32219729 DOI: 10.1007/s12975-020-00806-z] [Citation(s) in RCA: 173] [Impact Index Per Article: 43.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 03/04/2020] [Accepted: 03/10/2020] [Indexed: 02/07/2023]
Abstract
Ischemic stroke is one of the significant causes of morbidity and mortality, affecting millions of people across the globe. Cell injury in the infarct region is an inevitable consequence of focal cerebral ischemia. Subsequent reperfusion exacerbates the harmful effect and increases the infarct volume. These cellular injuries follow either a regulated pathway involving tightly structured signaling cascades and molecularly defined effector mechanisms or a non-regulated pathway, also known as accidental cell death, where the process is biologically uncontrolled. Classical cell death pathways are long established and well reported in several articles that majorly define apoptotic cell death. A recent focus on cell death study also considers investigation on non-classical pathways that are tightly regulated, may or may not involve caspases, but non-apoptotic. Pathological cell death is a cardinal feature of different neurodegenerative diseases. Although ischemia cannot be classified as a neurodegenerative disease, it is a cerebrovascular event where the infarct region exhibits aberrant cell death. Over the past few decades, several therapeutic options have been implicated for ischemic stroke. However, their use has been hampered owing to the number of limitations that they possess. Ischemic penumbral neurons undergo apoptosis and become dysfunctional; however, they are salvageable. Thus, understanding the role of different cell death pathways is crucial to aid in the modern treatment of protecting apoptotic neurons.
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Jantas D, Chwastek J, Grygier B, Lasoń W. Neuroprotective Effects of Necrostatin-1 Against Oxidative Stress-Induced Cell Damage: an Involvement of Cathepsin D Inhibition. Neurotox Res 2020; 37:525-542. [PMID: 31960265 PMCID: PMC7062871 DOI: 10.1007/s12640-020-00164-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 01/07/2020] [Accepted: 01/10/2020] [Indexed: 12/14/2022]
Abstract
Necroptosis, a recently discovered form of non-apoptotic programmed cell death, can be implicated in many pathological conditions including neuronal cell death. Moreover, an inhibition of this process by necrostatin-1 (Nec-1) has been shown to be neuroprotective in in vitro and in vivo models of cerebral ischemia. However, the involvement of this type of cell death in oxidative stress–induced neuronal cell damage is less recognized. Therefore, we tested the effects of Nec-1, an inhibitor of necroptosis, in the model of hydrogen peroxide (H2O2)-induced cell damage in human neuroblastoma SH-SY5Y and murine hippocampal HT-22 cell lines. The data showed that Nec-1 (10–40 μM) attenuated the cell death induced by H2O2 in undifferentiated (UN-) and neuronal differentiated (RA-) SH-SY5Y cells with a higher efficacy in the former cell type. Moreover, Nec-1 partially reduced cell damage induced by 6-hydroxydopamine in UN- and RA-SH-SY5Y cells. The protective effect of Nec-1 was of similar magnitude as the effect of a caspase-3 inhibitor in both cell phenotypes and this effect were not potentiated after combined treatment. Furthermore, the non-specific apoptosis and necroptosis inhibitor curcumin augmented the beneficial effect of Nec-1 against H2O2-evoked cell damage albeit only in RA-SH-SY5Y cells. Next, it was found that the mechanisms of neuroprotective effect of Nec-1 against H2O2-induced cell damage in SH-SY5Y cells involved the inhibition of lysosomal protease, cathepsin D, but not caspase-3 or calpain activities. In HT-22 cells, Nec-1 was protective in two models of oxidative stress (H2O2 and glutamate) and that effect was blocked by a caspase inhibitor. Our data showed neuroprotective effects of the necroptosis inhibitor, Nec-1, against oxidative stress–induced cell damage and pointed to involvement of cathepsin D inhibition in the mechanism of its action. Moreover, a cell type–specific interplay between necroptosis and apoptosis has been demonstrated.
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Affiliation(s)
- Danuta Jantas
- Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology Polish Academy of Sciences, Smętna Street 12, 31-343, Kraków, Poland.
| | - Jakub Chwastek
- Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology Polish Academy of Sciences, Smętna Street 12, 31-343, Kraków, Poland.,Department of Neurochemistry, Maj Institute of Pharmacology Polish Academy of Sciences, Smętna Street 12, 31-343, Kraków, Poland
| | - Beata Grygier
- Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology Polish Academy of Sciences, Smętna Street 12, 31-343, Kraków, Poland.,Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7 Street, 30-387, Kraków, Poland
| | - Władysław Lasoń
- Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology Polish Academy of Sciences, Smętna Street 12, 31-343, Kraków, Poland
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Font-Belmonte E, González-Rodríguez P, Fernández-López A. Necroptosis in global cerebral ischemia: a role for endoplasmic reticulum stress. Neural Regen Res 2020; 15:455-456. [PMID: 31571656 PMCID: PMC6921337 DOI: 10.4103/1673-5374.266054] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- Enrique Font-Belmonte
- Área de Biología Celular, Instituto de Biomedicina, Universidad de León, León, Spain
| | | | - Arsenio Fernández-López
- Área de Biología Celular, Instituto de Biomedicina, Universidad de León; Neural Therapies SL, Edificio Institutos de Investigación, Campus de Vegazana, León, Spain
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Wu Q, Zhang M, Liu X, Zhang J, Wang H. CB2R orchestrates neuronal autophagy through regulation of the mTOR signaling pathway in the hippocampus of developing rats with status epilepticus. Int J Mol Med 2019; 45:475-484. [PMID: 31894322 PMCID: PMC6984801 DOI: 10.3892/ijmm.2019.4439] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 11/29/2019] [Indexed: 12/11/2022] Open
Abstract
Neuronal loss and gliosis are the major pathological changes after status epilepticus (SE). The authors' previous study revealed the time-dependent changes of cannabinoid receptor type 2 (CB2R) in hippocampal neurons of developing rats after SE, which were accompanied by a decrease in the number of neurons. Meanwhile, growing evidence indicates that CB2R stimulation exerts anti-convulsant properties in seizure models. However, the activation of CB2R in neuronal repair in response to the damage after SE is still unclear. In this experiment, a highly-selective CB2R agonist JWH133 and antagonist AM630 were administered to determine the activity of CB2R in neuronal autophagy and apoptosis of the post-SE repair in developing rats. The present results revealed that activation of CB2R by JWH133, not only obviously lowered the success rate, 24-h death rate and the Racine stage in the model, but also extended the latency period to SE. In addition, compared with the vehicle control group, CB2R activation increased neuronal autophagy and the expression of phosphorylated-mammalian target of rapamycin (p-mTOR)/mTOR, Beclin-1, and LC3II/LC3I while decreasing the expression of p-Unc-51-like autophagy-activating kinase 1 (ULK-1)/ULK1, p62, and cleaved caspase-3. These results were dose-dependent and were especially evident in the high-dose group, and interestingly the opposite results were obtained in the AM630 group. Thus, CB2R orchestrates neuronal autophagy through regulation of the mTOR signaling pathway in the hippocampus of developing rats with SE. These findings might provide an important basis for further investigation of the therapeutic role of CB2R in ameliorating epilepsy-related neuronal damage.
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Affiliation(s)
- Qiong Wu
- Department of Pediatric Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Miao Zhang
- Department of Forensic Pathology, China Medical University School of Forensic Medicine, Shenyang, Liaoning 110122, P.R. China
| | - Xueyan Liu
- Department of Pediatric Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Junmei Zhang
- Department of Pediatric Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Hua Wang
- Department of Pediatric Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
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Sugaya T, Kanno H, Matsuda M, Handa K, Tateda S, Murakami T, Ozawa H, Itoi E. B-RAF V600E Inhibitor Dabrafenib Attenuates RIPK3-Mediated Necroptosis and Promotes Functional Recovery after Spinal Cord Injury. Cells 2019; 8:cells8121582. [PMID: 31817643 PMCID: PMC6953123 DOI: 10.3390/cells8121582] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 11/24/2019] [Accepted: 12/04/2019] [Indexed: 02/06/2023] Open
Abstract
The receptor-interacting protein kinase 3 (RIPK3) is a key regulator of necroptosis and is involved in various pathologies of human diseases. We previously reported that RIPK3 expression is upregulated in various neural cells at the lesions and necroptosis contributed to secondary neural tissue damage after spinal cord injury (SCI). Interestingly, recent studies have shown that the B-RAFV600E inhibitor dabrafenib has a function to selectively inhibit RIPK3 and prevents necroptosis in various disease models. In the present study, using a mouse model of thoracic spinal cord contusion injury, we demonstrate that dabrafenib administration in the acute phase significantly inhibites RIPK3-mediated necroptosis in the injured spinal cord. The administration of dabrafenib attenuated secondary neural tissue damage, such as demyelination, neuronal loss, and axonal damage, following SCI. Importantly, the neuroprotective effect of dabrafenib dramatically improved the recovery of locomotor and sensory functions after SCI. Furthermore, the electrophysiological assessment of the injured spinal cord objectively confirmed that the functional recovery was enhanced by dabrafenib. These findings suggest that the B-RAFV600E inhibitor dabrafenib attenuates RIPK3-mediated necroptosis to provide a neuroprotective effect and promotes functional recovery after SCI. The administration of dabrafenib may be a novel therapeutic strategy for treating patients with SCI in the future.
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Affiliation(s)
- Takehiro Sugaya
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan; (T.S.); (M.M.); (K.H.); (S.T.); (T.M.); (E.I.)
| | - Haruo Kanno
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan; (T.S.); (M.M.); (K.H.); (S.T.); (T.M.); (E.I.)
- Correspondence: ; Tel.: +81-22-717-7245
| | - Michiharu Matsuda
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan; (T.S.); (M.M.); (K.H.); (S.T.); (T.M.); (E.I.)
| | - Kyoichi Handa
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan; (T.S.); (M.M.); (K.H.); (S.T.); (T.M.); (E.I.)
| | - Satoshi Tateda
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan; (T.S.); (M.M.); (K.H.); (S.T.); (T.M.); (E.I.)
| | - Taishi Murakami
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan; (T.S.); (M.M.); (K.H.); (S.T.); (T.M.); (E.I.)
| | - Hiroshi Ozawa
- Department of Orthopaedic Surgery, Tohoku Medical and Pharmaceutical University, Faculty of Medicine, 1-15-1, Fukumuro Miyagino-ku, Sendai 983-8536, Japan;
| | - Eiji Itoi
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan; (T.S.); (M.M.); (K.H.); (S.T.); (T.M.); (E.I.)
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Molnár T, Mázló A, Tslaf V, Szöllősi AG, Emri G, Koncz G. Current translational potential and underlying molecular mechanisms of necroptosis. Cell Death Dis 2019; 10:860. [PMID: 31719524 PMCID: PMC6851151 DOI: 10.1038/s41419-019-2094-z] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 10/22/2019] [Accepted: 10/24/2019] [Indexed: 12/27/2022]
Abstract
Cell death has a fundamental impact on the evolution of degenerative disorders, autoimmune processes, inflammatory diseases, tumor formation and immune surveillance. Over the past couple of decades extensive studies have uncovered novel cell death pathways, which are independent of apoptosis. Among these is necroptosis, a tightly regulated, inflammatory form of cell death. Necroptosis contribute to the pathogenesis of many diseases and in this review, we will focus exclusively on necroptosis in humans. Necroptosis is considered a backup mechanism of apoptosis, but the in vivo appearance of necroptosis indicates that both caspase-mediated and caspase-independent mechanisms control necroptosis. Necroptosis is regulated on multiple levels, from the transcription, to the stability and posttranslational modifications of the necrosome components, to the availability of molecular interaction partners and the localization of receptor-interacting serine/threonine-protein kinase 1 (RIPK1), receptor-interacting serine/threonine-protein kinase 3 (RIPK3) and mixed lineage kinase domain-like protein (MLKL). Accordingly, we classified the role of more than seventy molecules in necroptotic signaling based on consistent in vitro or in vivo evidence to understand the molecular background of necroptosis and to find opportunities where regulating the intensity and the modality of cell death could be exploited in clinical interventions. Necroptosis specific inhibitors are under development, but >20 drugs, already used in the treatment of various diseases, have the potential to regulate necroptosis. By listing necroptosis-modulated human diseases and cataloging the currently available drug-repertoire to modify necroptosis intensity, we hope to kick-start approaches with immediate translational potential. We also indicate where necroptosis regulating capacity should be considered in the current applications of these drugs.
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Affiliation(s)
- Tamás Molnár
- Department of Immunology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
- Doctoral School of Molecular Cellular and Immune Biology, University of Debrecen, Debrecen, Hungary
| | - Anett Mázló
- Department of Immunology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
- Doctoral School of Molecular Cellular and Immune Biology, University of Debrecen, Debrecen, Hungary
- MTA-DE Cell Biology and Signaling Research Group, Faculty of Medicine, University of Debrecen, Debrecen, 4032, Hungary
| | - Vera Tslaf
- Department of Immunology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Attila Gábor Szöllősi
- Department of Immunology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Gabriella Emri
- Department of Dermatology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Gábor Koncz
- Department of Immunology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.
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43
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Choi ME, Price DR, Ryter SW, Choi AMK. Necroptosis: a crucial pathogenic mediator of human disease. JCI Insight 2019; 4:128834. [PMID: 31391333 DOI: 10.1172/jci.insight.128834] [Citation(s) in RCA: 258] [Impact Index Per Article: 51.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Necroptosis is a genetically regulated form of necrotic cell death that has emerged as an important pathway in human disease. The necroptosis pathway is induced by a variety of signals, including death receptor ligands, and regulated by receptor-interacting protein kinases 1 and 3 (RIPK1 and RIPK3) and mixed-lineage kinase domain-like pseudokinase (MLKL), which form a regulatory necrosome complex. RIPK3-mediated phosphorylation of MLKL executes necroptosis. Recent studies, using animal models of tissue injury, have revealed that RIPK3 and MLKL are key effectors of injury propagation. This Review explores the functional roles of RIPK3 and MLKL as crucial pathogenic determinants and markers of disease progression and severity in experimental models of human disease, including acute and chronic pulmonary diseases; renal, hepatic, cardiovascular, and neurodegenerative diseases; cancer; and critical illness.
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Affiliation(s)
- Mary E Choi
- Division of Nephrology and Hypertension, Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York, New York, USA.,NewYork-Presbyterian Hospital, Weill Cornell Medical Center, New York, New York, USA
| | - David R Price
- NewYork-Presbyterian Hospital, Weill Cornell Medical Center, New York, New York, USA.,Division of Pulmonary and Critical Care Medicine, Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York, New York, USA
| | - Stefan W Ryter
- Division of Pulmonary and Critical Care Medicine, Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York, New York, USA
| | - Augustine M K Choi
- NewYork-Presbyterian Hospital, Weill Cornell Medical Center, New York, New York, USA.,Division of Pulmonary and Critical Care Medicine, Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York, New York, USA
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44
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Qian A, Xu J, Wu C, Liu S, Zhang M. Hypothermia Inhibits Cerebral Necroptosis and NOD-Like Receptor Pyrin Domain Containing 3 Pathway in a Swine Model of Cardiac Arrest. J Surg Res 2019; 244:468-476. [PMID: 31330290 DOI: 10.1016/j.jss.2019.05.044] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 05/09/2019] [Accepted: 05/29/2019] [Indexed: 01/13/2023]
Abstract
BACKGROUND Targeted temperature management (TTM) is commonly used in hypothermia after cardiopulmonary resuscitation (CPR), and its mechanism to improve cerebral function is complex. This study aimed to investigate the effects of TTM on necroptosis and the NOD-like receptor pyrin domain containing 3 (NLRP3) inflammasome in the brain tissue of pigs after CPR. MATERIALS AND METHODS Ventricular fibrillation was induced, and CPR was performed 10 min later in nine pigs in the normothermia group and nine pigs in the TTM group. The body temperature in the TTM group was dropped to 33°C after CPR and maintained for 24 h, whereas in the normothermia group, it was maintained at 38°C. Before CPR and at 30 h after CPR, serum neuron-specific enolase and S-100β were measured. At 30 h after CPR, pigs were euthanized, and brain tissues were collected for measurement of receptor-interacting protein kinase (RIPIK) 1, RIPK3, mixed lineage kinase domain-like (MLKL), NLRP3, cysteinyl aspartate-specific proteinase (caspase)-1, interleukin (IL)-1β, and IL-18. RESULTS Serum neuron-specific enolase and S-100β were increased significantly (P < 0.05) in the two CPR-treated groups compared with the sham group and more obviously in the normothermia group. In addition, the expression of RIPK3, phosphorylated MLKL, and NLRP3 in brain tissues was increased. The expression of RIPK3, phosphorylated MLKL, NLRP3, and caspase-1 as well as the levels of IL-1β and IL-18 were lower (P < 0.05) in the TTM group compared with the normothermia group. CONCLUSIONS Necroptosis and the NLRP3 pathway were activated after CPR. TTM may attenuate postresuscitation brain injury through the regulation of necroptosis and the NLRP3 pathway.
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Affiliation(s)
- Anyu Qian
- Department of Emergency Medicine, The Second Affiliated Hospital of Zhejiang University, School of Medicine, Hangzhou, China
| | - Jiefeng Xu
- Department of Emergency Medicine, The Second Affiliated Hospital of Zhejiang University, School of Medicine, Hangzhou, China
| | - Chunshuang Wu
- Department of Emergency Medicine, The Second Affiliated Hospital of Zhejiang University, School of Medicine, Hangzhou, China
| | - Shaoyun Liu
- Department of Emergency Medicine, The Second Affiliated Hospital of Zhejiang University, School of Medicine, Hangzhou, China
| | - Mao Zhang
- Department of Emergency Medicine, The Second Affiliated Hospital of Zhejiang University, School of Medicine, Hangzhou, China.
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45
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Font‐Belmonte E, Ugidos IF, Santos‐Galdiano M, González‐Rodríguez P, Anuncibay‐Soto B, Pérez‐Rodríguez D, Gonzalo‐Orden JM, Fernández‐López A. Post‐ischemic salubrinal administration reduces necroptosis in a rat model of global cerebral ischemia. J Neurochem 2019; 151:777-794. [DOI: 10.1111/jnc.14789] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 05/24/2019] [Accepted: 05/29/2019] [Indexed: 02/06/2023]
Affiliation(s)
| | - Irene F. Ugidos
- Área de Biología Celular, Instituto de Biomedicina University of León León Spain
| | | | | | - Berta Anuncibay‐Soto
- Área de Biología Celular, Instituto de Biomedicina University of León León Spain
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46
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Han F, Guan X, Guo W, Lu B. Therapeutic potential of a TrkB agonistic antibody for ischemic brain injury. Neurobiol Dis 2019; 127:570-581. [DOI: 10.1016/j.nbd.2019.04.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 04/04/2019] [Accepted: 04/10/2019] [Indexed: 12/20/2022] Open
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Ligustroflavone reduces necroptosis in rat brain after ischemic stroke through targeting RIPK1/RIPK3/MLKL pathway. Naunyn Schmiedebergs Arch Pharmacol 2019; 392:1085-1095. [PMID: 31055628 DOI: 10.1007/s00210-019-01656-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 04/16/2019] [Indexed: 12/11/2022]
Abstract
Receptor-interacting protein kinase 1/3 (RIPK1/3) and mixed lineage kinase domain-like (MLKL)-mediated necroptosis contributes to brain injury after ischemic stroke. Ligustroflavone is an ingredient of common privet with activities of anti-inflammation and complement inhibition. This study aims to explore the effect of ligustroflavone on ischemic brain injury in stroke rat and the underlying mechanisms. A rat model of ischemic stroke was established by middle cerebral artery occlusion (MCAO), which showed ischemic injury (increase in neurological deficit score and infarct volume) and upregulation of necroptosis-associated proteins (RIPK1, RIPK3 and MLKL/p-MLKL). Administration of ligustroflavone (30 mg/kg, i.g.) 15 min before ischemia evidently improved neurological function, reduced infarct volume, and decreased the levels of necroptosis-associated proteins except the RIPK1. Consistently, hypoxia-cultured PC12 cells (O2/N2/CO2, 1:94:5, 8 h) caused cellular injury (LDH release and necroposis) concomitant with up-regulation of necroptosis-associated proteins, and these phenomena were blocked in the presence of ligustroflavone (25 μM) except the elevated RIPK1 levels. Using the Molecular Operating Environment (MOE) program, we identified RIPK1, RIPK3, and MLKL as potential targets of ligustroflavone. Further studies showed that the interaction between RIPK3 and RIPK1 or MLKL was significantly enhanced, which was blocked in the presence of ligustroflavone. Based on these observations, we conclude that ligustroflavone protects rat brain from ischemic injury, and its beneficial effect is related to the prevention of necroptosis through a mechanism involving targeting RIPK1, RIPK3, and/or MLKL.
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48
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TRAF2 protects against cerebral ischemia-induced brain injury by suppressing necroptosis. Cell Death Dis 2019; 10:328. [PMID: 30988281 PMCID: PMC6465397 DOI: 10.1038/s41419-019-1558-5] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 02/21/2019] [Accepted: 03/25/2019] [Indexed: 12/12/2022]
Abstract
Necroptosis contributes to ischemia-induced brain injury. Tumor necrosis factor (TNF) receptor associated factor 2 (TRAF2) has been reported to suppress necroptotic cell death under several pathological conditions. In this study, we investigated the role of TRAF2 in experimental stroke using a mouse middle cerebral artery occlusion (MCAO) model and in vitro cellular models. TRAF2 expression in the ischemic brain was assessed with western blot and real-time RT-PCR. Gene knockdown of TRAF2 by lentivirus was utilized to investigate the role of TRAF2 in stroke outcomes. The expression of TRAF2 was significantly induced in the ischemic brain at 24 h after reperfusion, and neurons and microglia were two of the cellular sources of TRAF2 induction. Striatal knockdown of TRAF2 increased infarction size, cell death, microglial activation and the expression of pro-inflammatory markers at 24 h after reperfusion. TRAF2 expression and necroptosis were induced in mouse primary microglia treated with conditioned medium collected from neurons subject to oxygen and glucose deprivation (OGD) and in TNFα-treated mouse hippocampal neuronal HT-22 cells in the presence of the pan-caspase inhibitor Z-VAD. In addition, TRAF2 knockdown exacerbated microglial cell death and neuronal cell death under these conditions. Moreover, pre-treatment with a specific necroptosis inhibitor necrostatin-1 (nec-1) suppressed the cell death exacerbated by TRAF2 knockdown in the brain following MCAO, indicating that TRAF2 impacted ischemic brain damage through necroptosis mechanism. Taken together, our results demonstrate that TRAF2 is a novel regulator of cerebral ischemic injury.
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49
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Axonal Degeneration Is Mediated by Necroptosis Activation. J Neurosci 2019; 39:3832-3844. [PMID: 30850513 DOI: 10.1523/jneurosci.0881-18.2019] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 02/01/2019] [Accepted: 02/14/2019] [Indexed: 01/22/2023] Open
Abstract
Axonal degeneration, which contributes to functional impairment in several disorders of the nervous system, is an important target for neuroprotection. Several individual factors and subcellular events have been implicated in axonal degeneration, but researchers have so far been unable to identify an integrative signaling pathway activating this self-destructive process. Through pharmacological and genetic approaches, we tested whether necroptosis, a regulated cell-death mechanism implicated in the pathogenesis of several neurodegenerative diseases, is involved in axonal degeneration. Pharmacological inhibition of the necroptotic kinase RIPK1 using necrostatin-1 strongly delayed axonal degeneration in the peripheral nervous system and CNS of wild-type mice of either sex and protected in vitro sensory axons from degeneration after mechanical and toxic insults. These effects were also observed after genetic knock-down of RIPK3, a second key regulator of necroptosis, and the downstream effector MLKL (Mixed Lineage Kinase Domain-Like). RIPK1 inhibition prevented mitochondrial fragmentation in vitro and in vivo, a typical feature of necrotic death, and inhibition of mitochondrial fission by Mdivi also resulted in reduced axonal loss in damaged nerves. Furthermore, electrophysiological analysis demonstrated that inhibition of necroptosis delays not only the morphological degeneration of axons, but also the loss of their electrophysiological function after nerve injury. Activation of the necroptotic pathway early during injury-induced axonal degeneration was made evident by increased phosphorylation of the downstream effector MLKL. Our results demonstrate that axonal degeneration proceeds by necroptosis, thus defining a novel mechanistic framework in the axonal degenerative cascade for therapeutic interventions in a wide variety of conditions that lead to neuronal loss and functional impairment.SIGNIFICANCE STATEMENT We show that axonal degeneration triggered by diverse stimuli is mediated by the activation of the necroptotic programmed cell-death program by a cell-autonomous mechanism. This work represents a critical advance for the field since it identifies a defined degenerative pathway involved in axonal degeneration in both the peripheral nervous system and the CNS, a process that has been proposed as an early event in several neurodegenerative conditions and a major contributor to neuronal death. The identification of necroptosis as a key mechanism for axonal degeneration is an important step toward the development of novel therapeutic strategies for nervous-system disorders, particularly those related to chemotherapy-induced peripheral neuropathies or CNS diseases in which axonal degeneration is a common factor.
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50
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Dermentzaki G, Politi KA, Lu L, Mishra V, Pérez-Torres EJ, Sosunov AA, McKhann GM, Lotti F, Shneider NA, Przedborski S. Deletion of Ripk3 Prevents Motor Neuron Death In Vitro but not In Vivo. eNeuro 2019; 6:ENEURO.0308-18.2018. [PMID: 30815534 PMCID: PMC6391588 DOI: 10.1523/eneuro.0308-18.2018] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 12/14/2018] [Accepted: 12/14/2018] [Indexed: 12/13/2022] Open
Abstract
Increasing evidence suggests that necroptosis, a form of programmed cell death (PCD), contributes to neurodegeneration in several disorders, including ALS. Supporting this view, investigations in both in vitro and in vivo models of ALS have implicated key molecular determinants of necroptosis in the death of spinal motor neurons (MNs). Consistent with a pathogenic role of necroptosis in ALS, we showed increased mRNA levels for the three main necroptosis effectors Ripk1, Ripk3, and Mlkl in the spinal cord of mutant superoxide dismutase-1 (SOD1G93A) transgenic mice (Tg), an established model of ALS. In addition, protein levels of receptor-interacting protein kinase 1 (RIPK1; but not of RIPK3, MLKL or activated MLKL) were elevated in spinal cord extracts from these Tg SOD1G93A mice. In postmortem motor cortex samples from sporadic and familial ALS patients, no change in protein levels of RIPK1 were detected. Silencing of Ripk3 in cultured MNs protected them from toxicity associated with SOD1G93A astrocytes. However, constitutive deletion of Ripk3 in Tg SOD1G93A mice failed to provide behavioral or neuropathological improvement, demonstrating no similar benefit of Ripk3 silencing in vivo. Lastly, we detected no genotype-specific myelin decompaction, proposed to be a proxy of necroptosis in ALS, in either Tg SOD1G93A or Optineurin knock-out mice, another ALS mouse model. These findings argue against a role for RIPK3 in Tg SOD1G93A-induced neurodegeneration and call for further preclinical investigations to determine if necroptosis plays a critical role in the pathogenesis of ALS.
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Affiliation(s)
- Georgia Dermentzaki
- Department of Pathology and Cell Biology, Columbia University, New York, NY 10032
- Center for Motor Neuron Biology and Disease, Columbia University, New York, NY 10032
| | - Kristin A. Politi
- Department of Pathology and Cell Biology, Columbia University, New York, NY 10032
- Center for Motor Neuron Biology and Disease, Columbia University, New York, NY 10032
| | - Lei Lu
- Department of Neurology, Columbia University, New York, NY 10032
- Center for Motor Neuron Biology and Disease, Columbia University, New York, NY 10032
| | - Vartika Mishra
- Department of Pathology and Cell Biology, Columbia University, New York, NY 10032
- Center for Motor Neuron Biology and Disease, Columbia University, New York, NY 10032
| | - Eduardo J. Pérez-Torres
- Department of Pathology and Cell Biology, Columbia University, New York, NY 10032
- Center for Motor Neuron Biology and Disease, Columbia University, New York, NY 10032
| | | | - Guy M. McKhann
- Department of Neurological Surgery, Columbia University, New York, NY 10032
| | - Francesco Lotti
- Department of Pathology and Cell Biology, Columbia University, New York, NY 10032
- Center for Motor Neuron Biology and Disease, Columbia University, New York, NY 10032
| | - Neil A. Shneider
- Department of Neurology, Columbia University, New York, NY 10032
- Center for Motor Neuron Biology and Disease, Columbia University, New York, NY 10032
| | - Serge Przedborski
- Department of Pathology and Cell Biology, Columbia University, New York, NY 10032
- Department of Neurology, Columbia University, New York, NY 10032
- Center for Motor Neuron Biology and Disease, Columbia University, New York, NY 10032
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