101
|
Wang YH, Li Y, Wang JN, Zhao QX, Jin J, Wen S, Wang SC, Sun T. Maresin 1 Attenuates Radicular Pain Through the Inhibition of NLRP3 Inflammasome-Induced Pyroptosis via NF-κB Signaling. Front Neurosci 2020; 14:831. [PMID: 32982664 PMCID: PMC7479972 DOI: 10.3389/fnins.2020.00831] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Accepted: 07/16/2020] [Indexed: 12/13/2022] Open
Abstract
Background The exposure of the nucleus pulposus (NP) causes an immune and inflammatory response, which is intrinsically linked to the pathogenesis of radicular pain. As a newly discovered pro-resolving lipid mediator, maresin 1 (MaR1) could exert powerful inflammatory resolution, neuroprotection, and analgesic activities. In the present research, the analgesic effect of MaR1 was observed. Then, the potential mechanism by which MaR1 attenuated radicular pain was also analyzed in a rat model. Methods Intrathecal administration of MaR1 (10 or 100 ng) was successively performed in a rat with non-compressive lumbar disk herniation for three postoperative days. Mechanical and thermal thresholds were determined to assess pain-related behavior from days 1 to 7 (n = 8/group). On day 7, the tissues of spinal dorsal horns from different groups were gathered to evaluate expression levels of inflammatory cytokines (IL-1β, IL-18, and TNF-α), the NLRP3 inflammasome and pyroptosis indicators (GSDMD, ASC, NLRP3, and Caspase-1), together with NF-κB/p65 activation (n = 6/group). TUNEL and PI staining were performed to further examine the process of pyroptosis. Results After intrathecal administration in the rat model, MaR1 exhibited potent analgesic effect dose-dependently. MaR1 significantly prompted the resolution of the increased inflammatory cytokine levels, reversed the up-regulated expression of the inflammasome and pyroptosis indicators, and reduced the cell death and the positive activation of NF-κB/p65 resulting from the NP application on the L5 dorsal root ganglion. Conclusion This study indicated that the activation of NLRP3 inflammasome and pyroptosis played a significant role in the inflammatory reaction of radicular pain. Also, MaR1 could effectively down-regulate the inflammatory response and attenuate pain by inhibiting NLRP3 inflammasome-induced pyroptosis via NF-κB signaling.
Collapse
Affiliation(s)
- Yi-Hao Wang
- Department of Pain Management, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Department of Anesthesiology, Qingdao Municipal Hospital, Qingdao, China
| | - Yan Li
- Department of Obstetrics and Gynecology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jun-Nan Wang
- Department of Pain Management, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Qing-Xiang Zhao
- Department of Pain Management, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Jin Jin
- Department of Pain Management, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Shuang Wen
- Department of Pain Management, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Si-Cong Wang
- Department of Pain Management, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Tao Sun
- Department of Pain Management, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| |
Collapse
|
102
|
Li X, Yu Z, Zong W, Chen P, Li J, Wang M, Ding F, Xie M, Wang W, Luo X. Deficiency of the microglial Hv1 proton channel attenuates neuronal pyroptosis and inhibits inflammatory reaction after spinal cord injury. J Neuroinflammation 2020; 17:263. [PMID: 32891159 PMCID: PMC7487532 DOI: 10.1186/s12974-020-01942-x] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Accepted: 08/25/2020] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Spinal cord injury (SCI) causes neurological dysfunction with devastating consequences. SCI pathogenesis is accompanied by inflammasome activation and neuronal damage. But the spatial pattern and the time course of neuronal pyroptosis and apoptosis after SCI should be further elucidated. The microglial voltage-gated proton channel (Hv1) is implicated in reactive oxygen species (ROS)-induced neuronal damage following ischemic stroke. However, there is a lack of quantification on the neuronal pyroptosis and apoptosis associated with microglial Hv1 after SCI. METHODS We analyzed spatial and temporal characteristics of neuronal pyroptosis and apoptosis following SCI and investigated the effects of Hv1 deficiency on neuronal pyroptosis and the nod-like receptor 3 (NLRP3) inflammasome pathway by using a mouse model of SCI. We tested the effects of Hv1-deficient microglia on ROS production in vivo and examined the relationship between ROS and neuronal pyroptosis in vitro. RESULTS We observed that apoptosis was detected closer to the injury core than pyroptosis. The incidence of neuronal apoptosis peaked on day 1 after SCI and occurred before pyroptosis. Hv1 deficiency reduced neuronal apoptosis and NLRP3-inflammasome-mediated pyroptosis, improved axonal regeneration, and reduced motor deficits. SCI led to elevated ROS levels, whereas Hv1 deficiency downregulated microglial ROS generation. In vitro, ROS upregulated neuronal pyroptosis and activated the NLRP3 inflammasome pathway, both of which were reversed by addition of a ROS scavenger. Our results suggested that microglial Hv1 regulated neuronal apoptosis and NLRP3-induced neuronal pyroptosis after SCI by mediating ROS production. CONCLUSION Following SCI, neuronal pyroptosis lasted longer and occurred farther away from the injury core compared with that of neuronal apoptosis. Microglial Hv1 deficiency downregulated microglial ROS generation and reduced apoptosis and NLRP3-induced neuronal pyroptosis. Our findings may provide novel insights into Hv1-associated mechanisms underlying neuronal damage after SCI.
Collapse
Affiliation(s)
- Xuefei Li
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Zhiyuan Yu
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Weifeng Zong
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Peng Chen
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Jia Li
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Minghuan Wang
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Fengfei Ding
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Minjie Xie
- 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
| | - Xiang Luo
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| |
Collapse
|
103
|
Pang Y, Zhang PC, Lu RR, Li HL, Li JC, Fu HX, Cao YW, Fang GX, Liu BH, Wu JB, Zhou JY, Zhou Y. Andrade-Oliveira Salvianolic Acid B Modulates Caspase-1-Mediated Pyroptosis in Renal Ischemia-Reperfusion Injury via Nrf2 Pathway. Front Pharmacol 2020; 11:541426. [PMID: 33013384 PMCID: PMC7495093 DOI: 10.3389/fphar.2020.541426] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 08/17/2020] [Indexed: 12/19/2022] Open
Abstract
Acute kidney injury (AKI) is a serious disease characterized by a rapid decline in kidney function. Oxidative stress is the primary pathogenesis of AKI. Salvianolic acid B (SalB), a water-soluble compound extracted from Salvia miltiorrhiza, possesses a potent antioxidant activity. Here, we investigated the protective effect of SalB against renal ischemia-reperfusion injury (I/R) in mice. Briefly, by analyzing renal function, oxidative stress markers and inflammatory biomarkers, we found that SalB could improve kidney damage, reduce oxidative stress and inflammatory factor levels. Interestingly, the expression of the NLR family pyrin domain-containing 3 (NLRP3), caspase-1, pyroptosis related proteins gasdermin D (GSDMD) and interleukin (IL)-1β, which were significantly upregulated in the kidney tissues of I/R group, was effectively reversed by SalB. Meanwhile, renal tubular epithelial cells hypoxia and reoxygenation model was used to explore pyroptosis of caspase-1-dependent. Further mechanism study showed that the SalB pretreatment could promote the increase of nuclear factor erythroid-2 related factor 2 (Nrf2) nuclear accumulation, which significantly suppressed oxidative stress, proinflammatory cytokines, NLRP3 inflammasome activation and pyroptosis. These results indicate that SalB can inhibit caspase-1/GSDMD-mediated pyroptosis by activating Nrf2/NLRP3 signaling pathway, resulting in alleviating I/R injury in mice.
Collapse
Affiliation(s)
- Yu Pang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Pei-Chun Zhang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Rui-Rui Lu
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Hong-Lian Li
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Ji-Cheng Li
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Hong-Xin Fu
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yi-Wen Cao
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Guo-Xing Fang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Bi-Hao Liu
- Department of Urology, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China.,Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Jun-Biao Wu
- Department of Clinical Pharmacy, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jiu-Yao Zhou
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yuan Zhou
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| |
Collapse
|
104
|
Oxidative Stress-Mediated Blood-Brain Barrier (BBB) Disruption in Neurological Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020. [DOI: 10.1155/2020/4356386] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The blood-brain barrier (BBB), as a crucial gate of brain-blood molecular exchange, is involved in the pathogenesis of multiple neurological diseases. Oxidative stress is caused by an imbalance between the production of reactive oxygen species (ROS) and the scavenger system. Since oxidative stress plays a significant role in the production and maintenance of the BBB, the cerebrovascular system is especially vulnerable to it. The pathways that initiate BBB dysfunction include, but are not limited to, mitochondrial dysfunction, excitotoxicity, iron metabolism, cytokines, pyroptosis, and necroptosis, all converging on the generation of ROS. Interestingly, ROS also provide common triggers that directly regulate BBB damage, parameters including tight junction (TJ) modifications, transporters, matrix metalloproteinase (MMP) activation, inflammatory responses, and autophagy. We will discuss the role of oxidative stress-mediated BBB disruption in neurological diseases, such as hemorrhagic stroke, ischemic stroke (IS), Alzheimer’s disease (AD), Parkinson’s disease (PD), traumatic brain injury (TBI), amyotrophic lateral sclerosis (ALS), and cerebral small vessel disease (CSVD). This review will also discuss the latest clinical evidence of potential biomarkers and antioxidant drugs towards oxidative stress in neurological diseases. A deeper understanding of how oxidative stress damages BBB may open up more therapeutic options for the treatment of neurological diseases.
Collapse
|
105
|
Aravind A, Kosty J, Chandra N, Pfister BJ. Blast exposure predisposes the brain to increased neurological deficits in a model of blast plus blunt traumatic brain injury. Exp Neurol 2020; 332:113378. [PMID: 32553593 DOI: 10.1016/j.expneurol.2020.113378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 05/20/2020] [Accepted: 06/08/2020] [Indexed: 10/24/2022]
Abstract
Soldiers are often exposed to more than one traumatic brain injury (TBI) over the course of their service. In recent years, more attention has been drawn to the increased risk of neurological deficits caused by the 'blast plus' polytrauma, which typically is a blast trauma combined with other forms of TBI. In this study, we investigated the behavioral and neuronal deficits resulting from a blast plus injury involving a mild-moderate blast followed by a mild blunt trauma using the fluid percussion injury model. We identified that the blast injury predisposed the brain to increased cognitive deficits, chronic ventricular enlargement, increased neurodegeneration at acute time points and chronic neuronal loss. Interestingly, a single blast and single blunt injury differed in their onset and manifestation of cognitive and regional neuronal loss. We also identified the presence of cleaved RIP1 from caspase 8 mediated apoptosis in the blunt injury while the blast injury did not activate immediate apoptosis but led to decreased hilar neuronal survival over time.
Collapse
Affiliation(s)
- Aswati Aravind
- Center for Injury Biomechanics, Materials and Medicine, Department of Biomedical Engineering, New Jersey Institute of Technology, 323 Dr M.L.K. Jr. Blvd, Newark, NJ 07102, USA
| | - Julianna Kosty
- Center for Injury Biomechanics, Materials and Medicine, Department of Biomedical Engineering, New Jersey Institute of Technology, 323 Dr M.L.K. Jr. Blvd, Newark, NJ 07102, USA
| | - Namas Chandra
- Center for Injury Biomechanics, Materials and Medicine, Department of Biomedical Engineering, New Jersey Institute of Technology, 323 Dr M.L.K. Jr. Blvd, Newark, NJ 07102, USA
| | - Bryan J Pfister
- Center for Injury Biomechanics, Materials and Medicine, Department of Biomedical Engineering, New Jersey Institute of Technology, 323 Dr M.L.K. Jr. Blvd, Newark, NJ 07102, USA.
| |
Collapse
|
106
|
Omelchenko A, Singh NK, Firestein BL. Current advances in in vitro models of central nervous system trauma. CURRENT OPINION IN BIOMEDICAL ENGINEERING 2020; 14:34-41. [PMID: 32671312 PMCID: PMC7363028 DOI: 10.1016/j.cobme.2020.05.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
CNS trauma is a prominent cause of mortality and morbidity, and although much effort has focused on developing treatments for CNS trauma-related pathologies, little progress has been made. Pre-clinical models of TBI and SCI suffer from significant drawbacks, which result in substantial failures during clinical translation of promising pre-clinical therapies. Here, we review recent advances made in the development of in vitro models of CNS trauma, the promises and drawbacks of current in vitro CNS injury models, and the attributes necessary for future models to accurately mimic the trauma microenvironment and facilitate CNS trauma drug discovery. The goal is to provide insight for the development of future CNS injury models and to aid researchers in selecting effective models for pre-clinical research of trauma therapeutics.
Collapse
Affiliation(s)
- Anton Omelchenko
- Department of Cell Biology and Neuroscience; Rutgers, The State University of New Jersey, 604 Allison Road, Piscataway, NJ 08854-8082
- Neuroscience Graduate Program, Rutgers, The State University of New Jersey, 604 Allison Road, Piscataway, NJ 08854-8082
| | - Nisha K. Singh
- Department of Cell Biology and Neuroscience; Rutgers, The State University of New Jersey, 604 Allison Road, Piscataway, NJ 08854-8082
- Molecular Biosciences Graduate Program, Rutgers, The State University of New Jersey, 604 Allison Road, Piscataway, NJ 08854-8082
| | - Bonnie L. Firestein
- Department of Cell Biology and Neuroscience; Rutgers, The State University of New Jersey, 604 Allison Road, Piscataway, NJ 08854-8082
| |
Collapse
|
107
|
Sun Z, Gu L, Wu K, Wang K, Ru J, Yang S, Wang Z, Zhuge Q, Huang L, Huang S. VX-765 enhances autophagy of human umbilical cord mesenchymal stem cells against stroke-induced apoptosis and inflammatory responses via AMPK/mTOR signaling pathway. CNS Neurosci Ther 2020; 26:952-961. [PMID: 32459063 PMCID: PMC7415204 DOI: 10.1111/cns.13400] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 04/09/2020] [Accepted: 04/28/2020] [Indexed: 12/11/2022] Open
Abstract
INTRODUCTION To investigate the protective effect of VX-765 on human umbilical mesenchymal stem cells (HUMSCs) in stroke and its mechanism. MATERIALS AND METHODS Mouse models of ischemic stroke were established using the distal middle cerebral artery occlusion (dMCAO) method. The dMCAO mice were accordingly transplanted with HUMSCs, VX-765-treated HUMSCs, or VX-765 + MHY185-treated HUMSCs. The HUMSCs were inserted with green fluorescent protein (GFP) for measurement of transplantation efficiency which was determined by immunofluorescence assay. Oxygen-glucose deprivation (OGD) was applied to mimic ischemic environment in vitro experiments, and the HUMSCs herein were transfected with AMPK inhibitor Compound C or autophagy inhibitor 3-MA. MTT assay was used to test the toxicity of VX-765. TUNEL staining and ELISA were applied to measure the levels of apoptosis and inflammatory cytokines (IL-1β, IL-6, and IL-10), respectively. The expressions of autophagy-associated proteins, AMPK, and mTOR were detected by Western blotting. TTC staining was applied to reveal the infarct lesions in the brain of dMCAO mice. RESULTS The pro-inflammatory cytokines, TUNEL-positive cells, and p-mTOR were decreased while the anti-inflammatory cytokine, autophagy-related proteins, and p-AMPK were increased in HUMSCs treated with VX-765 under OGD condition. Different expression patterns were found with the above factors after transfection of 3-MA or Compound C. The pro-inflammatory cytokines, TUNEL-positive cells, and infarct sections were decreased while the anti-inflammatory cytokine and autophagy-related proteins were increased in dMCAO mice transplanted with VX-765-treated HUMSCs compared to those transplanted with HUMSCs only. The autophagy was inhibited while p-mTOR was up-regulated after transfection of MHY. CONCLUSION VX-765 protects HUMSCs against stroke-induced apoptosis and inflammatory responses by activating autophagy via the AMPK/mTOR signaling pathway in vivo and in vitro.
Collapse
Affiliation(s)
- Zhezhe Sun
- Department of Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.,Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, Wenzhou Medical University, Wenzhou, China
| | - Lei Gu
- Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, Wenzhou Medical University, Wenzhou, China.,Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Ke Wu
- Department of Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.,Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, Wenzhou Medical University, Wenzhou, China
| | - Kankai Wang
- Department of Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.,Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, Wenzhou Medical University, Wenzhou, China
| | - Junnan Ru
- Department of Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.,Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, Wenzhou Medical University, Wenzhou, China
| | - Su Yang
- Department of Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.,Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, Wenzhou Medical University, Wenzhou, China
| | - Zhenzhong Wang
- Department of Neurosurgery, Yuyao people's Hospital, Ningbo, China
| | - Qichuan Zhuge
- Department of Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.,Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, Wenzhou Medical University, Wenzhou, China
| | - Lijie Huang
- Department of Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.,Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, Wenzhou Medical University, Wenzhou, China
| | - Shengwei Huang
- Department of Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.,Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, Wenzhou Medical University, Wenzhou, China
| |
Collapse
|
108
|
Hu X, Chen H, Xu H, Wu Y, Wu C, Jia C, Li Y, Sheng S, Xu C, Xu H, Ni W, Zhou K. Role of Pyroptosis in Traumatic Brain and Spinal Cord Injuries. Int J Biol Sci 2020; 16:2042-2050. [PMID: 32549752 PMCID: PMC7294939 DOI: 10.7150/ijbs.45467] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Accepted: 04/05/2020] [Indexed: 12/11/2022] Open
Abstract
Central nervous system (CNS) trauma, including traumatic brain injury (TBI) and spinal cord injury (SCI), remains a leading cause for morbidity and mortality worldwide. Past research has shown that cell death plays a critical role in the pathophysiology of CNS injuries. More recently, pyroptosis has been identified as a form of programmed inflammatory cell death, and it is a unique form of cell death in various aspects. Mechanistically, pyroptosis can be categorized into canonical (mediated by caspase-1) and non-canonical (mediated by caspase-4/5/11). In canonical pyroptosis, Nod-like receptors (NLRs) inflammasomes play a critical role, and their activation promotes the maturation and secretion of the inflammatory cytokines interleukin-1β/18 (IL-1β/18), cleavage of gasdermin D (GSDMD), and ultimately pyroptotic cell death. Despite a plethora of new knowledge regarding pyroptosis, detailed understanding of how pyroptosis is involved in CNS injuries and possible ways to improve clinical outcomes following CNS injuries remain elusive. This review discusses the current knowledge on how pyroptosis is involved in CNS injuries, focusing on new discoveries regarding how pyroptosis activation occurs, differences between CNS cell types following injury, time-course of inflammatory responses, and key regulatory steps of pyroptosis. In addition, we highlight various investigational agents that are capable of regulating key steps in pyroptotic cell death, and we discuss how these agents may be used as therapies to improve outcomes following CNS trauma.
Collapse
Affiliation(s)
- Xinli Hu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
| | - Huanwen Chen
- University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Hui Xu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
| | - Yaosen Wu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
| | - Chenyu Wu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
| | - Chang Jia
- Pediatric Research Institute, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Yao Li
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
| | - Sunren Sheng
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
| | - Cong Xu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
| | - Huazi Xu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
| | - Wenfei Ni
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
| | - Kailiang Zhou
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
| |
Collapse
|
109
|
VX765 Attenuates Pyroptosis and HMGB1/TLR4/NF- κB Pathways to Improve Functional Outcomes in TBI Mice. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:7879629. [PMID: 32377306 PMCID: PMC7181015 DOI: 10.1155/2020/7879629] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 02/28/2020] [Accepted: 03/20/2020] [Indexed: 01/12/2023]
Abstract
Background Traumatic brain injury (TBI) refers to temporary or permanent damage to brain function caused by penetrating objects or blunt force trauma. TBI activates inflammasome-mediated pathways and other cell death pathways to remove inactive and damaged cells, however, they are also harmful to the central nervous system. The newly discovered cell death pattern termed pyroptosis has become an area of interest. It mainly relies on caspase-1-mediated pathways, leading to cell death. Methods Our research focus is VX765, a known caspase-1 inhibitor which may offer neuroprotection after the process of TBI. We established a controlled cortical impact (CCI) mouse model and then controlled the degree of pyroptosis in TBI with VX765. The effects of caspase-1 inhibition on inflammatory response, pyroptosis, blood-brain barrier (BBB), apoptosis, and microglia activation, in addition to neurological deficits, were investigated. Results We found that TBI led to NOD-like receptors (NLRs) as well as absent in melanoma 2 (AIM2) inflammasome-mediated pyroptosis in the damaged cerebral cortex. VX765 curbed the expressions of indispensable inflammatory subunits (caspase-1 as well as key downstream proinflammatory cytokines such as interleukin- (IL-) 1β and IL-18). It also inhibited gasdermin D (GSDMD) cleavage and apoptosis-associated spot-like protein (ASC) oligomerization in the injured cortex. In addition to the above, VX765 also inhibited the inflammatory activity of the high-mobility cassette -1/Toll-like receptor 4/nuclear factor-kappa B (HMGB1/TLR4/NF-kappa B) pathway. By inhibiting pyroptosis and inflammatory mediator expression, we demonstrated that VX765 can decrease blood-brain barrier (BBB) leakage, apoptosis, and microglia polarization to exhibit its neuroprotective effects. Conclusion In conclusion, VX765 can counteract neurological damage after TBI by reducing pyroptosis and HMGB1/TLR4/NF-κB pathway activities. VX765 may have a good therapeutic effect on TBI.
Collapse
|
110
|
Investigation on the mechanism of mafenide in inhibiting pyroptosis and the release of inflammatory factors. Eur J Pharm Sci 2020; 147:105303. [DOI: 10.1016/j.ejps.2020.105303] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 02/19/2020] [Accepted: 03/08/2020] [Indexed: 11/19/2022]
|
111
|
Liu X, Geng J, Guo H, Zhao H, Ai Y. Propofol inhibited apoptosis of hippocampal neurons in status epilepticus through miR-15a-5p/NR2B/ERK1/2 pathway. Cell Cycle 2020; 19:1000-1011. [PMID: 32212891 DOI: 10.1080/15384101.2020.1743909] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Although a previous study reported that propofol had a therapeutic effect in status epilepticus (SE), the mechanisms underlying the effect of propofol in SE remain unclear. The aim of this study was to explore the regulatory mechanisms underlying propofol-induced inhibition of SE.A rat SE model was established using the lithium-pilocarpine injection method. A qRT-PCR and Western blot were utilized to detect the expression of relative molecules. Cell apoptosis was evaluated by a flow cytometry assay. The interaction between miR-15a-5p and NR2B was assessed using a luciferase reporter assay.Propofol inhibited cell apoptosis and increased miR-15a-5p expression both in hippocampal tissues of SE rats and low Mg2+-induced hippocampal neurons. Propofol-induced attenuation of apoptosis of low Mg2+-induced hippocampal neurons was mediated by miR-15a-5p. miR-15a-5p targeted NR2B and negatively regulated its expression. Propofol downregulated NR2B expression, mediated by miR-15a-5p. In terms of the mechanism of action, propofol suppressed the apoptosis of Mg2+-induced hippocampal neurons through the miR-15a-5p/NR2B/ERK1/2 pathway. In vivo experiment suggested that propofol inhibited the apoptosis of hippocampal neurons in SE rats by upregulating miR-15a-5p.In terms of the molecular mechanism of propofol, it appears to inhibit apoptosis of hippocampal neurons in SE through the miR-15a-5p/NR2B/ERK1/2 pathway. The findings provide theoretical support for propofol treatment of SE.
Collapse
Affiliation(s)
- Xing Liu
- Department of Anaesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jiefeng Geng
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Haiming Guo
- Department of Anaesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Huaping Zhao
- Department of Anaesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yanqiu Ai
- Department of Anaesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| |
Collapse
|
112
|
Yuan B, Zhou XM, You ZQ, Xu WD, Fan JM, Chen SJ, Han YL, Wu Q, Zhang X. Inhibition of AIM2 inflammasome activation alleviates GSDMD-induced pyroptosis in early brain injury after subarachnoid haemorrhage. Cell Death Dis 2020; 11:76. [PMID: 32001670 PMCID: PMC6992766 DOI: 10.1038/s41419-020-2248-z] [Citation(s) in RCA: 82] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 01/08/2020] [Accepted: 01/09/2020] [Indexed: 12/21/2022]
Abstract
Only a few types of inflammasomes have been described in central nervous system cells. Among these, the absent in melanoma 2 (AIM2) inflammasome is primarily found in neurons, is highly specific and can be activated only by double-stranded DNA. Although it has been demonstrated that the AIM2 inflammasome is activated by poly(deoxyadenylic-deoxythymidylic) acid sodium salt and leads to pyroptotic neuronal cell death, the role of AIM2 inflammasome-mediated pyroptosis in early brain injury (EBI) after subarachnoid haemorrhage (SAH) has rarely been studied. Thus, we designed this study to explore the mechanism of gasdermin D(GSDMD)-induced pyroptosis mediated by the AIM2 inflammasome in EBI after SAH. The level of AIM2 from the cerebrospinal fluid (CSF) of patients with SAH was detected. The pathway of AIM2 inflammasome-mediated pyroptosis, the AIM2/Caspase-1/GSDMD pathway, was explored after experimental SAH in vivo and in primary cortical neurons stimulated by oxyhaemoglobin (oxyHb) in vitro. Then, we evaluated GSDMD-induced pyroptosis mediated by the AIM2 inflammasome in AIM2 and caspase-1- deficient mice and primary cortical neurons generated through lentivirus (LV) knockdown. Compared with that of the control samples, the AIM2 level in the CSF of the patients with SAH was significantly increased. Pyroptosis-associated proteins mediated by the AIM2 inflammasome were significantly increased in vivo and in vitro following experimentally induced SAH. After AIM2 and caspase-1 were knocked down by an LV, GSDMD-induced pyroptosis mediated by the AIM2 inflammasome was alleviated in EBI after SAH. Intriguingly, when caspase-1 was knocked down, apoptosis was significantly suppressed via impeding the activation of caspase-3. GSDMD-induced pyroptosis mediated by the AIM2 inflammasome may be involved in EBI following SAH. The inhibition of AIM2 inflammasome activation caused by knocking down AIM2 and caspase-1 alleviates GSDMD-induced pyroptosis in EBI after SAH.
Collapse
Affiliation(s)
- Bin Yuan
- Department of Neurosurgery, Jinling Hospital, Nanjing Medical University, Nanjing, 210002, P R China
| | - Xiao-Ming Zhou
- Department of Neurosurgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, P R China
| | - Zong-Qi You
- Department of Neurosurgery, Jinling Hospital, School of Medicine, Jiangsu University, Nanjing, 210002, P R China
| | - Wei-Dong Xu
- Department of Neurosurgery, Jinling Hospital, School of Medicine, Southern Medical University, Nanjing, 210002, P R China
| | - Jie-Mei Fan
- Department of Neurosurgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, P R China
| | - Shu-Juan Chen
- Department of Neurosurgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, P R China
| | - Yan-Ling Han
- Department of Neurosurgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, P R China
| | - Qi Wu
- Department of Neurosurgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, P R China.
| | - Xin Zhang
- Department of Neurosurgery, Jinling Hospital, Nanjing Medical University, Nanjing, 210002, P R China.
| |
Collapse
|
113
|
Gu C, Hou C, Zhang S. miR-425-5p improves inflammation and septic liver damage through negatively regulating the RIP1-mediated necroptosis. Inflamm Res 2020; 69:299-308. [PMID: 32002587 DOI: 10.1007/s00011-020-01321-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 01/12/2020] [Accepted: 01/14/2020] [Indexed: 01/10/2023] Open
Abstract
OBJECTIVE AND DESIGN Sepsis, a systemic inflammatory response syndrome, is still a common cause of death even the patients who are in the intensive care unit. Alleviating septic liver damage may be effective in improving sepsis. Necroptosis and miRNAs have been regarded as a potential target in sepsis. MATERIAL OR SUBJECTS The aim of this work is to explain the potential role of miR-425-5p in septic liver damage. LPS was intraperitoneal-injection to C57BL/6 mice for sepsis, and hepatocytes treated with septic serum in vitro. H&E staining for histological evaluation, luciferase reporter assay for target validation, and qRT-PCR, WB, and ELISA analysis for assessment of miR-425-5p, RIP1, inflammatory factors, and LDH levels. RESULTS Down-regulated miR-425-5p and up-regulated RIP1/RIP3 were in LPS-induced sepsis mice. Liver damage, RIP1-mediated necroptosis, IL-1β, and TNF-α were suppressed by miR-425-5p agomiR, but further aggravated by miR-425-5p antagomiR. Furthermore, we demonstrated miR-425-5p targeted the 3'UTR of RIP1 mRNA to inhibit RIP1 expression and activated RIP1 reversed miR-425-5p-induced suppression of necroptosis and inflammation in septic hepatocytes. CONCLUSIONS The data suggest miR-425-5p negatively controls the RIP1-mediated necroptotic signaling cascades and inflammation, and sepsis-related liver damage. miR-425-5p/RIP1 axis is a potential therapeutic strategy for sepsis-related liver damage through necroptosis and inflammation.
Collapse
Affiliation(s)
- Changwei Gu
- Department of Emergency, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi, China
| | - Chongzhi Hou
- Department of General Surgery, Xi'an Children's Hospital, Xi'an, 710002, Shaanxi, China
| | - Sheng Zhang
- Department of General Surgery, Xi'an Children's Hospital, Xi'an, 710002, Shaanxi, China.
| |
Collapse
|
114
|
Gan D, Wu S, Chen B, Zhang J. Application of the Zebrafish Traumatic Brain Injury Model in Assessing Cerebral Inflammation. Zebrafish 2019; 17:73-82. [PMID: 31825288 DOI: 10.1089/zeb.2019.1793] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Traumatic brain injury (TBI) is a major public and socioeconomic problem throughout the world. The establishment of an effective and cost-effective TBI model for developing new therapeutic agents is challenging. Microglia are considered the resident macrophages of the central nervous system (CNS) that normally do not enter the brain. As the primary mediators of the innate immune response in the CNS, microglia play a critical role in neuroinflammation and secondary injury after TBI. In this study, we established an in vivo TBI zebrafish model using Tg(coro1a:EGFP) line where the green fluorescent protein-labeled microglia were present. We demonstrated that microglia accumulated rapidly in response to neuronal injuries. To clear away injured neurons and restore the CNS homeostasis, activated microglia secreted two types of functional cytokines, including pro-inflammatory interleukins (IL) of IL-1β and IL-6 and anti-inflammatory factors of IL-4 and IL-10 in the lesioned larvae. Cytidine 5'-Diphosphocholine (CDP-choline), as an effective and clinical neuroprotective drug, could further activate microglia, expressing high levels of il-1β, il-6, il-4, and il-10 in the TBI model. Moreover, CDP-choline reduced neuronal apoptosis and promoted neuronal proliferation around the lesioned site. Based on these results, the TBI model established in this study represents a suitable model for developing new therapeutic agents for CNS-associated diseases.
Collapse
Affiliation(s)
- Daqing Gan
- Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Shuilong Wu
- Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Bing Chen
- Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Jingjing Zhang
- Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| |
Collapse
|
115
|
Exosomes Mediate Hippocampal and Cortical Neuronal Injury Induced by Hepatic Ischemia-Reperfusion Injury through Activating Pyroptosis in Rats. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:3753485. [PMID: 31814872 PMCID: PMC6878784 DOI: 10.1155/2019/3753485] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 07/14/2019] [Accepted: 07/31/2019] [Indexed: 01/02/2023]
Abstract
Background The neuronal injury and cognitive dysfunction after liver transplantation have severe effects on the prognosis and life quality of patients. Accumulating evidence suggests that both exosomes and pyroptosis could participate in hepatic ischemia-reperfusion injury (HIRI) and play key roles in neuronal death. However, the link between exosomes and neuronal pyroptosis in HIRI awaits further investigation. Methods After establishing the HIRI rat models, we primarily studied the role of pyroptosis in hippocampal and cortical neuron injury through detecting NOD-like receptor protein 3 (NLRP3), pro-caspase-1, cleaved-caspase-1, apoptosis-associated speck-like protein containing CARD (ASC), gasdermin D (GSDMD), interleukin-1beta (IL-1β), and interleukin-18 (IL-18) expressions with western blotting, immunohistochemical staining, and enzyme-linked immunosorbent assay (ELISA). Then, we intravenously injected normal male rats with exosomes isolated from the sera of HIRI-challenged rats and pretreated rats with MCC950, a specific inhibitor of NLRP3, and carried out the same assay. We also detected the levels of reactive oxygen species (ROS), superoxide dismutase (SOD), and malondialdehyde (MDA) in the hippocampal and cortical tissues. Results The results indicated that NLRP3 inflammasome and caspase-1-dependent pyroptosis were activated in the hippocampus and cortex of HIRI rats. Furthermore, serum-derived exosomes from HIRI-challenged rats not only had the ability to cross the blood-brain barrier (BBB) but also had the similar effects on neuronal pyroptosis. Moreover, ROS and MDA productions were induced in the HIRI and exosome-challenged groups. In addition, to some degree, MCC950 could alleviate HIRI-mediated hippocampal and cortical neuronal pyroptosis. Conclusion This study experimentally demonstrated that circulating exosomes play a critical role in HIRI-mediated hippocampal and cortical injury through regulating neuronal pyroptosis.
Collapse
|
116
|
Espinosa-Oliva AM, García-Revilla J, Alonso-Bellido IM, Burguillos MA. Brainiac Caspases: Beyond the Wall of Apoptosis. Front Cell Neurosci 2019; 13:500. [PMID: 31749689 PMCID: PMC6848387 DOI: 10.3389/fncel.2019.00500] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 10/22/2019] [Indexed: 01/04/2023] Open
Abstract
For the last two decades, caspases, a family of cysteine-aspartic proteases, have evolved from being considered solely as regulators of apoptosis or inflammation to having a wider range of functions. In this mini review, we focus on the most recent “non-apoptotic” roles of caspases in the CNS, particularly in neurons, astrocytes and oligodendrocytes. Non-apoptotic caspase functions in microglia have already been reviewed extensively elsewhere. Here we discuss the involvement of caspases in the activation of the inflammasome, autophagy, and non-apoptotic forms of cell death such as necroptosis and pyroptosis. Also, we review the involvement of caspases in synapses and the processing of aggregates key to neurodegenerative diseases such as Parkinson’s, Alzheimer’s and Huntington’s diseases. Likewise, we mention the recently described involvement of caspases in mitochondrial biogenesis, which is a function independent of the enzymatic activity. We conclude discussing the relevance that “new” functions of caspases have in the CNS and the future of this field of research.
Collapse
Affiliation(s)
- Ana María Espinosa-Oliva
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, and Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC, Seville, Spain
| | - Juan García-Revilla
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, and Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC, Seville, Spain
| | - Isabel María Alonso-Bellido
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, and Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC, Seville, Spain
| | - Miguel Angel Burguillos
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, and Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC, Seville, Spain
| |
Collapse
|
117
|
Wu K, Huang D, Zhu C, Kasanga EA, Zhang Y, Yu E, Zhang H, Ni Z, Ye S, Zhang C, Hu J, Zhuge Q, Yang J. NT3 P75-2 gene-modified bone mesenchymal stem cells improve neurological function recovery in mouse TBI model. Stem Cell Res Ther 2019; 10:311. [PMID: 31651375 PMCID: PMC6814101 DOI: 10.1186/s13287-019-1428-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 09/07/2019] [Accepted: 09/24/2019] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND The attainment of extensive neurological function recovery remains the key challenge for the treatment of traumatic brain injury (TBI). Transplantation of bone marrow-derived mesenchymal stem cells (BMSCs) has been shown to improve neurological function recovery after TBI. However, the survival of BMSCs after transplantation in early-stage TBI is limited, and much is unknown about the mechanisms mediating this neurological function recovery. Secretion of neurotrophic factors, including neurotrophin 3 (NT3), is one of the critical factors mediating BMSC neurological function recovery. Gene mutation of NT3 (NT3P75-2) has been shown to enhance the biological function of NT3 via the reduction of the activation of the P75 signal pathway. Thus, we investigated whether NT3P75-2 gene-modified BMSCs could enhance the survival of BMSCs and further improve neurological function recovery after TBI. METHODS The ability of NT3P75-2 induction to improve cell growth rate of NSC-34 and PC12 cells in vitro was first determined. BMSCs were then infected with three different lentiviruses (green fluorescent protein (GFP), GFP-NT3, or GFP-NT3P75-2), which stably express GFP, GFP-NT3, or GFP-NT3P75-2. At 24 h post-TBI induction in mice, GFP-labeled BMSCs were locally transplanted into the lesion site. Immunofluorescence and histopathology were performed at 1, 3, and/or 7 days after transplantation to evaluate the survival of BMSCs as well as the lesion volume. A modified neurological severity scoring system and the rotarod test were chosen to evaluate the functional recovery of the mice. Cell growth rate, glial activation, and signaling pathway analyses were performed to determine the potential mechanisms of NT3P75-2 in functional recovery after TBI. RESULTS Overall, NT3P75-2 improved cell growth rate of NSC-34 and PC12 cells in vitro. In addition, NT3P75-2 significantly improved the survival of transplanted BMSCs and neurological function recovery after TBI. Overexpression of NT3P75-2 led to a significant reduction in the activation of glial cells, brain water content, and brain lesion volume after TBI. This was associated with a reduced activation of the p75 neurotrophin receptor (P75NTR) and the c-Jun N-terminal kinase (JNK) signal pathway due to the low affinity of NT3P75-2 for the receptor. CONCLUSIONS Taken together, our results demonstrate that administration of NT3P75-2 gene-modified BMSCs dramatically improves neurological function recovery after TBI by increasing the survival of BMSCs and ameliorating the inflammatory environment, providing a new promising treatment strategy for TBI.
Collapse
Affiliation(s)
- Ke Wu
- Department of Neurosurgery, Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Dongdong Huang
- Department of Neurosurgery, Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Can Zhu
- Department of Neurosurgery, Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Ella A Kasanga
- Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, Fort Worth, TX, 76107, USA
| | - Ying Zhang
- Department of Neurosurgery, Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Enxing Yu
- Department of Neurosurgery, Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Hengli Zhang
- Department of Neurosurgery, Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Zhihui Ni
- Department of Neurosurgery, Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Sheng Ye
- Department of Neurosurgery, Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Chunli Zhang
- Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA
| | - Jiangnan Hu
- Department of Neurosurgery, Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China. .,Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, Fort Worth, TX, 76107, USA.
| | - Qichuan Zhuge
- Department of Neurosurgery, Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China.
| | - Jianjing Yang
- Department of Neurosurgery, Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China. .,Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, Fort Worth, TX, 76107, USA.
| |
Collapse
|
118
|
Chen Y, Meng J, Bi F, Li H, Chang C, Ji C, Liu W. EK7 Regulates NLRP3 Inflammasome Activation and Neuroinflammation Post-traumatic Brain Injury. Front Mol Neurosci 2019; 12:202. [PMID: 31555089 PMCID: PMC6727020 DOI: 10.3389/fnmol.2019.00202] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 08/02/2019] [Indexed: 12/14/2022] Open
Abstract
As one of the most common causes of mortality and disability, traumatic brain injury (TBI) is a huge psychological and economic burden to patients, families, and societies worldwide. Neuroinflammation reduction may be a favorable option to alleviate secondary brain injuries and ameliorate the outcome of TBI. The nucleotide-binding oligomerization domain, leucine-rich repeat and pyrin domain-containing 3 (NLRP3) inflammasome, has been shown to be involved in TBI. NIMA-related kinase 7 (NEK7) has been verified as an essential mediator of NLRP3 inflammasome activation that is recruited upstream of the formation of inflammasomes in response to NLRP3 activators. However, the underlying mechanism by which NEK7 operates post-TBI remains undefined. In this study, we performed both in vivo and in vitro experiments. Using an in vivo mouse TBI model, mice were administered an intracerebroventricular injection of NEK7-shRNA virus. For the in vitro analysis, primary cortical neurons with NEK7-shRNA were stimulated with lipopolysaccharide (LPS)/ATP or potassium (K+). We evaluated the effects of NEK7 knock-down on neurological deficits, NLRP3 inflammasomes, caspase-1 activation, and neuronal injury. During the 0–168 h post-TBI period in vivo, NEK7 and NLRP3 inflammasome activation increased in what appeared to be a time-dependent manner. As well as pyroptosis-related markers, caspase-1 activation (p20) and interleukin-1β (IL-1β) activation (p17) were up-regulated. NEK7 down-regulation attenuated neurological deficits, NLRP3 inflammasomes, caspase-1 activation, and neuronal injury. The same phenomena were observed during the in vitro experiments. Furthermore, NEK7 knock-down suppressed NLRP3 inflammasome activation and pyroptosis, which were triggered by K+ efflux, and the LPS + ATP-triggered NEK7–NLRP3 complex was reversed in primary cortical neurons placed in 50 mM K+ medium. Collectively, the data demonstrated that NEK7, as a modulator, regulates NLRP3 inflammasomes and downstream neuroinflammation in response to K+ efflux, through NEK7–NLRP3 assembly, pro-caspase-1 recruitment, caspase-1 activation, and pyroptosis in nerve injuries, post-TBI. NEK7 may be a potential therapeutic target for attenuating neuroinflammation and nerve injury post-TBI.
Collapse
Affiliation(s)
- Yuhua Chen
- Department of Central Laboratory, Xi'an Peihua University, Xi'an, China.,Department of Neurosurgery, the Second Affiliated Hospital of Xi'an Medical University, Xi'an, China
| | - Jiao Meng
- Department of Central Laboratory, Xi'an Peihua University, Xi'an, China.,Department of Basic Medical Science Research Center, Shaanxi Fourth People's Hospital, Xi'an, China
| | - Fangfang Bi
- Department of Central Laboratory, Xi'an Peihua University, Xi'an, China.,Department of Basic Medical Science Research Center, Shaanxi Fourth People's Hospital, Xi'an, China
| | - Hua Li
- Department of Basic Medical Science Research Center, Shaanxi Fourth People's Hospital, Xi'an, China
| | - Cuicui Chang
- Department of Central Laboratory, Xi'an Peihua University, Xi'an, China
| | - Chen Ji
- Department of Central Laboratory, Xi'an Peihua University, Xi'an, China
| | - Wei Liu
- Department of Neurosurgery, the Second Affiliated Hospital of Xi'an Medical University, Xi'an, China
| |
Collapse
|
119
|
Liao J, Yang F, Tang Z, Yu W, Han Q, Hu L, Li Y, Guo J, Pan J, Ma F, Ma X, Lin Y. Inhibition of Caspase-1-dependent pyroptosis attenuates copper-induced apoptosis in chicken hepatocytes. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 174:110-119. [PMID: 30822667 DOI: 10.1016/j.ecoenv.2019.02.069] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 02/20/2019] [Accepted: 02/21/2019] [Indexed: 06/09/2023]
Abstract
The purpose of this study was to investigate the effects of copper (Cu) on hepatocyte pyroptosis and the relationship between pyroptosis and apoptosis in the mechanisms of Cu toxicity. Primary chicken hepatocytes were cultured in different concentrations of Cu sulfate (CuSO4) (0, 10, 50, and 100 μM), N-acetylcysteine (NAC) (1 mM), and Z-YVAD-fluoromethylketone (Z-YVAD-FMK) (10 μM) for 24 h, and the combination of Cu and NAC or Z-YVAD-FMK for 24 h. Cellular morphology and function, cell viability, mitochondria membrane potential (MMP), apoptosis rate, mRNA expression of pyroptosis-related and apoptosis-related genes, and Caspase-1, Caspase-3 proteins expression were determined. These results indicated that Cu markedly induced the mRNA expression of pyroptosis-related genes (Caspase-1, IL-1β, IL-18, and NLRP3) and Caspase-1 protein expression. Furthermore, contents of Caspase-1, IL-1β, and IL-18 in the supernatant fluid of culture hepatocytes were significantly increased in hepatocytes. NAC relieved excess Cu-caused the changes of above genes and proteins. Additionally, Z-YVAD-FMK, caspase-1 inhibitor, which attenuated Cu-induced the increased lactic dehydrogenase (LDH), aspartate amino transferase (AST), alanine aminotransferase (ALT) activities. Furthermore, treatment with Cu and Z-YVAD-FMK could down-regulate the mRNA levels of Caspase-3, Bak1, Bax, and CytC and Caspase-3 protein expression, up-regulate the mRNA expression of Bcl2, increase the MMP and reduce cell apoptosis compared to treatment with Cu in hepatocytes. Collectively, these finding evidenced that excess Cu induced pyroptosis by generating ROS in hepatocytes, and the inhibition of Caspase-1-dependent pyroptosis might attenuate Cu-induced apoptosis.
Collapse
Affiliation(s)
- Jianzhao Liao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, Guangdong, PR China.
| | - Fan Yang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, Guangdong, PR China; Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, PR China
| | - Zhaoxin Tang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, Guangdong, PR China.
| | - Wenlan Yu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, Guangdong, PR China
| | - Qingyue Han
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, Guangdong, PR China
| | - Lianmei Hu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, Guangdong, PR China
| | - Ying Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, Guangdong, PR China
| | - Jianying Guo
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, Guangdong, PR China
| | - Jiaqiang Pan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, Guangdong, PR China
| | - Feiyang Ma
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, Guangdong, PR China
| | - Xinyan Ma
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, Guangdong, PR China
| | - Yuyin Lin
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, Guangdong, PR China
| |
Collapse
|
120
|
Li L, Shu MQ, Chen J. CYLD deficiency exacerbates lipopolysaccharide (LPS)-induced pyroptosis in astrocytes of mice with sepsis. Biochem Biophys Res Commun 2019; 514:1066-1073. [PMID: 31097224 DOI: 10.1016/j.bbrc.2019.05.033] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 05/03/2019] [Indexed: 12/15/2022]
Abstract
Sepsis is a clinical syndrome occurring in patients following infection or injury, and is a leading cause of mortality in the world. However, the pathogenesis that contributes to sepsis and its associated brain injury is still unclear. Cylindromatosis (CYLD) is integrally involved in various physiological processes, such as immune responses, inflammation and cell cycle control. In the study, in vitro and in vivo models with sepsis by lipopolysaccharide (LPS) were performed to investigate the role of CYLD in inflammasome and its related astrocyte (AST) pyroptosis. The in vitro results suggested that LPS treatment significantly resulted in inflammasome activation and pyroptosis in AST. CYLD expression was progressively degraded upon LPS incubation in AST. Importantly, CYLD knockout (KO) could further promote pyroptosis and accelerate histone release in LPS-stimulated AST. In addition, the in vivo experiments suggested that LPS treatment in mice enhanced Caspase-1 immunoreactivity and resulted in high expression of phosphorylated nuclear factor-κB p65 (NF-κB p65), interleukin-1β (IL-1β) and IL-18 in hippocampus tissue samples, which were markedly exacerbated by CYLD knockout. Moreover, mice with CYLD deficiency exhibited higher mortality rate induced by LPS treatment. In conclusion, these findings suggested that CYLD decrease might accelerate astrocyte activity by promoting pyroptosis to promote sepsis-associated brain injury, and CYLD might be a potential therapeutic target for the management of this disease.
Collapse
Affiliation(s)
- Liang Li
- Department of Inpatient Ward 2, The Third People's Hospital of Huzhou, Huzhou, 313000, China
| | - Mang-Qiao Shu
- Psychosomatic Department, Chang'an Hospital, Xi'an, 710016, China
| | - Jie Chen
- Psychiatry Department, Wenzhou Seventh People's Hospital, Wenzhou, 325000, China.
| |
Collapse
|
121
|
Rapamycin improves the neuroprotection effect of inhibition of NLRP3 inflammasome activation after TBI. Brain Res 2019; 1710:163-172. [DOI: 10.1016/j.brainres.2019.01.005] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 12/26/2018] [Accepted: 01/03/2019] [Indexed: 01/02/2023]
|
122
|
Deng B, Liu R, Tian X, Han Z, Chen J. Simulated microgravity inhibits the viability and migration of glioma via FAK/RhoA/Rock and FAK/Nek2 signaling. In Vitro Cell Dev Biol Anim 2019; 55:260-271. [DOI: 10.1007/s11626-019-00334-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 02/05/2019] [Indexed: 12/12/2022]
|
123
|
Zheng G, Zhan Y, Wang H, Luo Z, Zheng F, Zhou Y, Wu Y, Wang S, Wu Y, Xiang G, Xu C, Xu H, Tian N, Zhang X. Carbon monoxide releasing molecule-3 alleviates neuron death after spinal cord injury via inflammasome regulation. EBioMedicine 2019; 40:643-654. [PMID: 30612943 PMCID: PMC6412161 DOI: 10.1016/j.ebiom.2018.12.059] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 12/29/2018] [Accepted: 12/29/2018] [Indexed: 12/23/2022] Open
Abstract
Background Genetic overexpression or pharmacological activation of heme oxygenase (HO) are identified as potential therapeutic target for spinal cord injury (SCI); however, the role of carbon monoxide (CO), which is a major product of haem degenerated by HO, in SCI remains unknown. Applying hemin or chemicals which may regulate HO expression or activity to increase CO production are inadequate to elaborate the direct role of CO. Here, we assessed the effect of CO releasing molecule-3 (CORM-3), the classical donor of CO, in SCI and explained its possible protective mechanism. Methods Rat SCI model was performed with a vascular clip (30 g) compressing at T9 vertebral level for 1 min and CO was delivered immediately after SCI by CORM-3. The neurological deficits and neuron survival were assessed. Inflammasome and inositol-requiring enzyme 1 (IRE1) pathway were measured by western blot and immunofluorescence. For in vitro study, oxygen glucose deprivation (OGD) simulated the SCI-inflammasome change in cultured the primary neurons. Findings CORM-3 suppressed inflammasome signaling and pyroptosis occurrence, which consequently alleviated neuron death and improved motor functional recovery following SCI. As a pivotal sensor involving in endoplasmic reticulum stress-medicated inflammasome signaling, IRE1 and its downstream X-box binding protein 1 (XBP1) were activated in SCI tissues as well as in OGD neurons; while inhibition of IRE1 by STF-083010 in SCI rats or by si-RNA in OGD neurons suppressed inflammasome signaling and pyroptosis. Interestingly, the SCI/OGD-stimulated IRE1 activation was attenuated by CORM-3 treatment. Interpretations CO may alleviate neuron death and improve motor functional recovery in SCI through IRE1 regulation, and administration of CO could be a promising therapeutic strategy for SCI.
Collapse
Affiliation(s)
- Gang Zheng
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou 325000, Zhejiang Province, China
| | - Yu Zhan
- Department of Chemoradiation Oncology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
| | - Haoli Wang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou 325000, Zhejiang Province, China
| | - Zucheng Luo
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou 325000, Zhejiang Province, China
| | - Fanghong Zheng
- The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
| | - Yifei Zhou
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou 325000, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
| | - Yaosen Wu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou 325000, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
| | - Sheng Wang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou 325000, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
| | - Yan Wu
- Department of Orthopaedics, The Second Affiliated Hospital, School of Medicine, Zhejiang University, 310058 Zhejiang Province, China
| | - Guangheng Xiang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou 325000, Zhejiang Province, China
| | - Cong Xu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou 325000, Zhejiang Province, China
| | - Huazi Xu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou 325000, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China.
| | - Naifeng Tian
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou 325000, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China.
| | - Xiaolei Zhang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou 325000, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Chinese Orthopaedic Regenerative Medicine Society, Hangzhou 310058, Zhejiang Province, China.
| |
Collapse
|
124
|
Resveratrol exhibits an effect on attenuating retina inflammatory condition and damage of diabetic retinopathy via PON1. Exp Eye Res 2018; 181:356-366. [PMID: 30503749 DOI: 10.1016/j.exer.2018.11.023] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 11/07/2018] [Accepted: 11/25/2018] [Indexed: 12/18/2022]
Abstract
Diabetic retinopathy (DR), an obstacle of the visual microvascular system, is a serious complication of diabetic patients. Paraoxonase 1 (PON1) has been extensively evaluated as a genetic candidate for diabetic microvascular complications, and PON1 is associated with DR. In this study, the biological functions of PON1 and its related proteins were determined via gene ontology (GO) enrichment analysis; we demonstrated that treatment with resveratrol alleviated retinal inflammatory activities to evaluate its protective effects on streptozotocin (STZ)-induced diabetic rats and high-glucose (HG) stimulated rat retinal endothelial cells (RRECs). The GO enrichment analysis suggested that PON1 may regulate inflammatory responses and microvascular complications in DR. In an in vivo study, resveratrol significantly recovered the insulin level and PON1 expression and activity, as well as clearly reduced the retinal vascular permeability, retinal AGEs, LDL, Ox-LDL, caspase3 activity, retinal damage, IL-1β, IL-6, TNFα, VEGF, IFNγ and MCP-1 in STZ-diabetic rats. Moreover, resveratrol reduced the caspase3 activity and Ox-LDL expression in HG stimulated RRECs. However, its protective effect was a deficiency in PON1-silenced RRECs. PON1 is a pivotal modulator in the role of resveratrol in reversing the RREC damage induced by HG. Furthermore, we found that resveratrol exhibits an effect on attenuating the retinal inflammatory condition and damage of DR via PON1. Our study suggests that resveratrol-induced PON1 in the retina may be a promising therapeutic strategy to prevent diabetes-related retinopathy.
Collapse
|
125
|
The pathological role of NLRs and AIM2 inflammasome-mediated pyroptosis in damaged blood-brain barrier after traumatic brain injury. Brain Res 2018; 1697:10-20. [DOI: 10.1016/j.brainres.2018.06.008] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 05/01/2018] [Accepted: 06/06/2018] [Indexed: 12/17/2022]
|
126
|
Roselli F, Chandrasekar A, Morganti-Kossmann MC. Interferons in Traumatic Brain and Spinal Cord Injury: Current Evidence for Translational Application. Front Neurol 2018; 9:458. [PMID: 29971040 PMCID: PMC6018073 DOI: 10.3389/fneur.2018.00458] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Accepted: 05/30/2018] [Indexed: 12/11/2022] Open
Abstract
This review article provides a general perspective of the experimental and clinical work surrounding the role of type-I, type-II, and type-III interferons (IFNs) in the pathophysiology of brain and spinal cord injury. Since IFNs are themselves well-known therapeutic targets (as well as pharmacological agents), and anti-IFNs monoclonal antibodies are being tested in clinical trials, it is timely to review the basis for the repurposing of these agents for the treatment of brain and spinal cord traumatic injury. Experimental evidence suggests that IFN-α may play a detrimental role in brain trauma, enhancing the pro-inflammatory response while keeping in check astrocyte proliferation; converging evidence from genetic models and neutralization by monoclonal antibodies suggests that limiting IFN-α actions in acute trauma may be a suitable therapeutic strategy. Effects of IFN-β administration in spinal cord and brain trauma have been reported but remain unclear or limited in effect. Despite the involvement in the inflammatory response, the role of IFN-γ remains controversial: although IFN-γ appears to improve the outcome of traumatic spinal cord injury, genetic models have produced either beneficial or detrimental results. IFNs may display opposing actions on the injured CNS relative to the concentration at which they are released and strictly dependent on whether the IFN or their receptors are targeted either via administration of neutralizing antibodies or through genetic deletion of either the mediator or its receptor. To date, IFN-α appears to most promising target for drug repurposing, and monoclonal antibodies anti IFN-α or its receptor may find appropriate use in the treatment of acute brain or spinal cord injury.
Collapse
Affiliation(s)
- Francesco Roselli
- Department of Neurology, Ulm University, Ulm, Germany.,Department of Anatomy and Cell Biology, Ulm University, Ulm, Germany
| | | | - Maria C Morganti-Kossmann
- Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, VIC, Australia.,Department of Child Health, Barrow Neurological Institute at Phoenix Children's Hospital, University of Arizona College of Medicine, Phoenix, AZ, United States
| |
Collapse
|
127
|
韦 倩, 冯 洁, 何 春, 华 子. [Role of caspase-1 activation in bilirubin-induced injury in cultured primary rat hippocampal neurons]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2018; 38:567-571. [PMID: 29891453 PMCID: PMC6743908 DOI: 10.3969/j.issn.1673-4254.2018.05.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To investigate the role of caspase-1 activation in bilirubin-induced neuronal injury and the protective effect of VX-765 against bilirubin-induced neurotoxicity in cultured primary rat hippocampal neurons. METHODS Cultured primary rat hippocampal neurons were exposed to DMSO (control group), 50 µmol/L bilirubin, or 50 µmol/L bilirubin 1 h after 50 µmol/L VX-765 treatment. The expressions of NLRP3 and caspase-1 in the neurons were detected by Western blotting, and the relative cell survival and death rates were assessed with a modified MTT assay, lactate dehydrogenase assay and Typan blue staining. Interleukin-18 (IL-18) concentration in the culture supernatant was measured using enzyme-linked immunosorbent assay (ELISA). RESULTS In cultured primary rat hippocampal neurons, bilirubin exposure for 3 and 6 h caused significant increases in the expressions of NLRP3 and activated caspase-1 compared with those in the control group (P<0.05). Pretreatment of the cells with VX-765 obviously suppressed bilirubin-induced activation of caspase-1 (P<0.05). The relative survival rate of the neurons was (84.02∓2.31)% in VX-765 intervention group, significantly higher than that in bilirubin group (P<0.05) but lower than that in the control group (P<0.05); LDH release rate in VX-765 intervention group was (10.78∓1.58)%, significantly lower than that in bilirubin group (P<0.05) but higher than that in the control group (P<0.05). The cell death rate in VX-765 intervention group was (5.58∓1.23)%, significantly lower than that in bilirubin group (P<0.05) but higher than that in the control group (P<0.05). CONCLUSION In cultured primary rat hippocampal neurons, caspase-1 activation plays a role in bilirubin-induced neurotoxicity, and VX-765 treatment provides protection against bilirubin-induced neuronal injury by inhibiting caspase-1 activation.
Collapse
Affiliation(s)
- 倩 韦
- />重庆医科大学附属儿童医院新生儿科//儿童发育疾病研究教育部重点实验室//儿童发育重大疾病国家国际科技合作基地//认知发育与学习记忆障碍转化医学重庆市重点实验室, 重庆 400014Department of Neonatology, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Chongqing 400014, China
| | - 洁 冯
- />重庆医科大学附属儿童医院新生儿科//儿童发育疾病研究教育部重点实验室//儿童发育重大疾病国家国际科技合作基地//认知发育与学习记忆障碍转化医学重庆市重点实验室, 重庆 400014Department of Neonatology, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Chongqing 400014, China
| | - 春梅 何
- />重庆医科大学附属儿童医院新生儿科//儿童发育疾病研究教育部重点实验室//儿童发育重大疾病国家国际科技合作基地//认知发育与学习记忆障碍转化医学重庆市重点实验室, 重庆 400014Department of Neonatology, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Chongqing 400014, China
| | - 子瑜 华
- />重庆医科大学附属儿童医院新生儿科//儿童发育疾病研究教育部重点实验室//儿童发育重大疾病国家国际科技合作基地//认知发育与学习记忆障碍转化医学重庆市重点实验室, 重庆 400014Department of Neonatology, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Chongqing 400014, China
| |
Collapse
|