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Shi Y, Ye D, Cui K, Bai X, Fan M, Feng Y, Hu C, Xu Y, Huang J. Melatonin ameliorates retinal ganglion cell senescence and apoptosis in a SIRT1-dependent manner in an optic nerve injury model. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167053. [PMID: 38325588 DOI: 10.1016/j.bbadis.2024.167053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 01/31/2024] [Accepted: 02/02/2024] [Indexed: 02/09/2024]
Abstract
Melatonin is involved in exerting protective effects in aged-related and neurodegenerative diseases through a silent information regulator type 1 (SIRT1)-dependent pathway. However, little was known about the impact of melatonin on retinal ganglion cell (RGC) senescence and apoptosis following optic nerve crush (ONC). Thus, this study aimed to examine the effects of melatonin on RGC senescence and apoptosis after ONC and investigate the involvement of SIRT1 in this process. To study this, an ONC model was established. EX-527, an inhibitor of SIRT1, was injected intraperitoneally into mice. And melatonin was administrated abdominally into mice after ONC every day. Hematoxylin & eosin staining, retina flat-mounts and optical coherence tomography were used to evaluate the loss of retina cells/neurons. Pattern electroretinogram (p-ERG) was performed to evaluate the function of RGCs. Immunofluorescence and western blot were used to evaluate protein expression. SA-β-gal staining was employed to detect senescent cells. The results demonstrated that melatonin partially rescued the expression of SIRT1 in RGC 3 days after ONC. Additionally, melatonin administration partly rescued the decreased RGC number and ganglion cell complex thickness observed 14 days after ONC. Melatonin also suppressed ONC-induced senescence and apoptosis index. Furthermore, p-ERG showed that melatonin improved the amplitude of P50, N95 and N95/P50 following ONC. Importantly, the protective effects of melatonin were reversed when EX-527 was administered. In summary, this study revealed that melatonin attenuated RGC senescence and apoptosis through a SIRT1-dependent pathway after ONC. These findings provide valuable insights for the treatment of RGC senescence and apoptosis.
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Affiliation(s)
- Yuxun Shi
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, China
| | - Dan Ye
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, China; Department of Ophthalmology, the First Affiliated Hospital of Guangzhou Medical University, 151 Yanjiang Road, Guangzhou 510120, China
| | - Kaixuan Cui
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, China
| | - Xue Bai
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, China
| | - Matthew Fan
- Yale College, Yale University, New Haven, CT 201942, United States
| | - Yanlin Feng
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, China
| | - Chenyang Hu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, China
| | - Yue Xu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, China.
| | - Jingjing Huang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, China.
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Chen Y, Chen J, Xing Z, Peng C, Li D. Autophagy in Neuroinflammation: A Focus on Epigenetic Regulation. Aging Dis 2024; 15:739-754. [PMID: 37548945 PMCID: PMC10917535 DOI: 10.14336/ad.2023.0718-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 07/18/2023] [Indexed: 08/08/2023] Open
Abstract
Neuroinflammation, characterized by the secretion of abundant inflammatory mediators, pro-inflammatory polarization of microglia, and the recruitment of infiltrating myeloid cells to foci of inflammation, drives or exacerbates the pathological processes of central nervous system disorders, especially in neurodegenerative diseases. Autophagy plays an essential role in neuroinflammatory processes, and the underlaying physiological mechanisms are closely correlated with neuroinflammation-related signals. Inhibition of mTOR and activation of AMPK and FOXO1 enhance autophagy and thereby suppress NLRP3 inflammasome activity and apoptosis, leading to the relief of neuroinflammatory response. And autophagy mitigates neuroinflammation mainly manifested by promoting the polarization of microglia from a pro-inflammatory to an anti-inflammatory state, reducing the production of pro-inflammatory mediators, and up-regulating the levels of anti-inflammatory factors. Notably, epigenetic modifications are intimately associated with autophagy and the onset and progression of various brain diseases. Non-coding RNAs, including microRNAs, circular RNAs and long noncoding RNAs, and histone acetylation have been reported to adjust autophagy-related gene and protein expression to alleviate inflammation in neurological diseases. The present review primarily focuses on the role and mechanisms of autophagy in neuroinflammatory responses, as well as epigenetic modifications of autophagy in neuroinflammation to reveal potential therapeutic targets in central nervous system diseases.
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Affiliation(s)
- Yu Chen
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Junren Chen
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Ziwei Xing
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Cheng Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Dan Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
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Li Y, Chen T, Xue Y, Wang Y, Peng L, Wang C, Yu S. DJ-1 inhibits ferroptosis in cerebral ischemia-reperfusion via ATF4/HSPA5 pathway. Neurochem Int 2023; 171:105628. [PMID: 37820776 DOI: 10.1016/j.neuint.2023.105628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 09/24/2023] [Accepted: 10/08/2023] [Indexed: 10/13/2023]
Abstract
DJ-1 has been confirmed to have neuroprotective effects. Ferroptosis is an iron-dependent programmed cell death mode associated with ischemic stroke. The ATF4/HSPA5 pathway has been shown to play an important role in the regulation of ferroptosis. To explore the role and possible mechanism of DJ-1 in regulating ferroptosis in cerebral ischemia-reperfusion injury. In this study, Middle cerebral artery occlusion/reperfusion (MCAO/R) was used to simulate cerebral ischemia-reperfusion injury in vivo. Detected ferroptosis-related indicators and observed mitochondrial morphology in brain tissue using transmission electron microscopy. ATF4 was subsequently interfered to observe the effect of DJ-1 on ferroptosis. The results suggest that after interfering with DJ-1, the iron content and malondialdehyde (MDA) content of ferroptosis-related indicators increased, the GSH content decreased, and the mitochondrial structure was severely damaged. We then found that DJ-1 attenuated ferroptosis following ATF4 reduction. In this study, we found that the neuroprotective effect of DJ-1 is related to the inhibition of ferroptosis, and its molecular mechanism is closely related to the ATF4/HSPA5 pathway, which may play a key role in inhibiting brain ischemia-reperfusion (I/R) ferroptosis.
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Affiliation(s)
- Yumei Li
- Department of Pathology, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China; Department of Pathology, Chengdu Women's &children's Central Hospital, 610000, Chengdu, China
| | - Tianyi Chen
- Department of Pathology, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China; Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, Chongqing, 400016, China; Department of Pathology, The First Affifiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Ying Xue
- Department of Pathology, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China; Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, Chongqing, 400016, China; Department of Pathology, The First Affifiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Yuan Wang
- Department of Pathology, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China; Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, Chongqing, 400016, China; Department of Pathology, The First Affifiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Li Peng
- Department of Pathology, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China; Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, Chongqing, 400016, China; Department of Pathology, The First Affifiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Chenglong Wang
- Department of Pathology, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China; Department of Pathology, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, 400021, China
| | - Shanshan Yu
- Department of Pathology, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China; Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, Chongqing, 400016, China; Department of Pathology, The First Affifiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
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Cossu D, Hatano T, Hattori N. The Role of Immune Dysfunction in Parkinson's Disease Development. Int J Mol Sci 2023; 24:16766. [PMID: 38069088 PMCID: PMC10706591 DOI: 10.3390/ijms242316766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 11/22/2023] [Accepted: 11/24/2023] [Indexed: 12/18/2023] Open
Abstract
Recent research has unveiled intriguing insights suggesting that the body's immune system may be implicated in Parkinson's disease (PD) development. Studies have observed disparities in pro-inflammatory and anti-inflammatory markers between PD patients and healthy individuals. This finding underscores the potential influence of immune system dysfunction in the genesis of this condition. A dysfunctional immune system can serve as a primary catalyst for systemic inflammation in the body, which may contribute to the emergence of various brain disorders. The identification of several genes associated with PD, as well as their connection to neuroinflammation, raises the likelihood of disease susceptibility. Moreover, advancing age and mitochondrial dysfunction can weaken the immune system, potentially implicating them in the onset of the disease, particularly among older individuals. Compromised integrity of the blood-brain barrier could facilitate the immune system's access to brain tissue. This exposure may lead to encounters with native antigens or infections, potentially triggering an autoimmune response. Furthermore, there is mounting evidence supporting the notion that gut dysbiosis might represent an initial trigger for brain inflammation, ultimately promoting neurodegeneration. In this comprehensive review, we will delve into the numerous hypotheses surrounding the role of both innate and adaptive immunity in PD.
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Affiliation(s)
- Davide Cossu
- Department of Neurology, Juntendo University, Tokyo 1138431, Japan
- Department of Biomedical Sciences, Sassari University, 07100 Sassari, Italy
| | - Taku Hatano
- Department of Neurology, Juntendo University, Tokyo 1138431, Japan
| | - Nobutaka Hattori
- Department of Neurology, Juntendo University, Tokyo 1138431, Japan
- Neurodegenerative Disorders Collaborative Laboratory, RIKEN Center for Brain Science, Saitama 3510918, Japan
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Nechushtai L, Frenkel D, Pinkas-Kramarski R. Autophagy in Parkinson's Disease. Biomolecules 2023; 13:1435. [PMID: 37892117 PMCID: PMC10604695 DOI: 10.3390/biom13101435] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 09/14/2023] [Accepted: 09/21/2023] [Indexed: 10/29/2023] Open
Abstract
Parkinson's disease (PD) is a devastating disease associated with accumulation of α-synuclein (α-Syn) within dopaminergic neurons, leading to neuronal death. PD is characterized by both motor and non-motor clinical symptoms. Several studies indicate that autophagy, an important intracellular degradation pathway, may be involved in different neurodegenerative diseases including PD. The autophagic process mediates the degradation of protein aggregates, damaged and unneeded proteins, and organelles, allowing their clearance, and thereby maintaining cell homeostasis. Impaired autophagy may cause the accumulation of abnormal proteins. Incomplete or impaired autophagy may explain the neurotoxic accumulation of protein aggregates in several neurodegenerative diseases including PD. Indeed, studies have suggested the contribution of impaired autophagy to α-Syn accumulation, the death of dopaminergic neurons, and neuroinflammation. In this review, we summarize the recent literature on the involvement of autophagy in PD pathogenesis.
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Affiliation(s)
| | | | - Ronit Pinkas-Kramarski
- Department of Neurobiology, School of Neurobiology, Biochemistry and Biophysics, Tel-Aviv University, Ramat-Aviv, Tel Aviv 69978, Israel; (L.N.); (D.F.)
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Zhou D, Chen L, Wang Y, Gan L, Yuan M, Zhang L, Chen F. RNA binding protein RPS3 mediates microglial polarization by activating NLRP3 inflammasome via SIRT1 in ischemic stroke. J Stroke Cerebrovasc Dis 2023; 32:107132. [PMID: 37087770 DOI: 10.1016/j.jstrokecerebrovasdis.2023.107132] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 04/07/2023] [Indexed: 04/25/2023] Open
Abstract
BACKGROUND Ischemic stroke is the obstruction of cerebral blood flow with a high morbidity. Microglial polarization is a contributing factor for ischemic stroke-induced injury. Here, we focused on function and mechanism of RNA binding protein RPS3 in microglial polarization after ischemic stroke. METHODS Transient middle cerebral artery occlusion (tMCAO) was conducted in SD rats. Infarct area was detected by TTC staining and neurological score was assessed. Fluorescence staining tested neuronal apoptosis and microglial differentiation. Oxygen and glucose deprivation/reoxygenation (OGD/R) was applied for treating microglia. Levels of RPS3, SIRT1, M1 and M2 polarization markers (CD86, iNOS, CD206, Arg-1) were determined by RT-qPCR. Western blot detected RPS3, SIRT1, NLRP3, ASC and Cleaved-caspase-1 expression. RIP assay validated that RPS3 interacted with SIRT1. CCK-8 measured cell viability. Flow cytometry and ELISA assessed M1 and M2 polarization markers. LDH release was detected using colorimetric CytoTox 96 Cytotoxicity kit. RESULTS RPS3 depletion improved neurological dysfunction and reduced infarction area in rats after tMCAO. Knockdown of RPS3 resulted in increased SIRT1 expression and decreased NLRP3 inflammasome activation, and induced microglia M2 polarization after ischemia-reperfusion (I/R). Besides, RPS3 directly targeted SIRT1 and reduced its expression in microglia. RPS3 silencing suppressed OGD/R-triggered neuronal and microglial cell death through SIRT1. Moreover, RPS3 activated NLRP3 inflammasome and regulated microglial polarization via SIRT1. CONCLUSION RPS3 regulates microglial polarization and neuronal injury through SIRT1/NLRP3 pathway, suggesting a novel target for ischemic stroke treatment.
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Affiliation(s)
- Dimi Zhou
- Department of Neurology, The Second Affiliated Hospital of University of South China, 35 Jiefang Dadao, Zhengxiang District, Hengyang, Hunan, China
| | - Lin Chen
- Department of Neurology, The Second Affiliated Hospital of University of South China, 35 Jiefang Dadao, Zhengxiang District, Hengyang, Hunan, China
| | - Yuzheng Wang
- Department of Neurology, The Second Affiliated Hospital of University of South China, 35 Jiefang Dadao, Zhengxiang District, Hengyang, Hunan, China
| | - Lu Gan
- Department of Neurology, The Second Affiliated Hospital of University of South China, 35 Jiefang Dadao, Zhengxiang District, Hengyang, Hunan, China
| | - Mei Yuan
- Department of Neurology, The Second Affiliated Hospital of University of South China, 35 Jiefang Dadao, Zhengxiang District, Hengyang, Hunan, China
| | - Lei Zhang
- Department of Neurology, The Second Affiliated Hospital of University of South China, 35 Jiefang Dadao, Zhengxiang District, Hengyang, Hunan, China
| | - Fenfang Chen
- Department of Neurology, The Second Affiliated Hospital of University of South China, 35 Jiefang Dadao, Zhengxiang District, Hengyang, Hunan, China.
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7
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Implications of microglial heterogeneity in spinal cord injury progression and therapy. Exp Neurol 2023; 359:114239. [PMID: 36216123 DOI: 10.1016/j.expneurol.2022.114239] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 09/21/2022] [Accepted: 10/03/2022] [Indexed: 11/07/2022]
Abstract
Microglia are widely distributed in the central nervous system (CNS), where they aid in the maintenance of neuronal function and perform key auxiliary roles in phagocytosis, neural repair, immunological control, and nutrition delivery. Microglia in the undamaged spinal cord is in a stable state and serve as immune monitors. In the event of spinal cord injury (SCI), severe changes in the microenvironment and glial scar formation lead to axonal regeneration failure. Microglia participates in a series of pathophysiological processes and behave both positive and negative consequences during this period. A deep understanding of the characteristics and functions of microglia can better identify therapeutic targets for SCI. Technological innovations such as single-cell RNA sequencing (Sc-RNAseq) have led to new advances in the study of microglia heterogeneity throughout the lifespan. Here,We review the updated studies searching for heterogeneity of microglia from the developmental and pathological state, survey the activity and function of microglia in SCI and explore the recent therapeutic strategies targeting microglia in the CNS injury.
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Tang Y, Xie J, Chen X, Sun L, Xu L, Chen X. A novel link between silent information regulator 1 and autophagy in cerebral ischemia-reperfusion. Front Neurosci 2022; 16:1040182. [PMID: 36507335 PMCID: PMC9726917 DOI: 10.3389/fnins.2022.1040182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 11/03/2022] [Indexed: 11/24/2022] Open
Abstract
Cerebral ischemia is one of the leading causes of death and disability worldwide. Although revascularization via reperfusion combined with advanced anticoagulant therapy is currently a gold standard treatment for patients, the reperfusion itself also results in a serious dysfunction termed cerebral ischemia-reperfusion (I/R) injury. Silent information regulator 1 (sirtuin 1, SIRT1), is a classic NAD+-dependent deacetylase, which has been proposed as an important mediator in the alleviation of cerebral ischemia through modulating multiple physiological processes, including apoptosis, inflammation, DNA repair, oxidative stress, and autophagy. Recent growing evidence suggests that SIRT1-mediated autophagy plays a key role in the pathophysiological process of cerebral I/R injury. SIRT1 could both activate and inhibit the autophagy process by mediating different autophagy pathways, such as the SIRT1-FOXOs pathway, SIRT1-AMPK pathway, and SIRT1-p53 pathway. However, the autophagic roles of SIRT1 in cerebral I/R injury have not been systematically summarized. Here, in this review, we will first introduce the molecular mechanisms and effects of SIRT1 in cerebral ischemia and I/R injury. Next, we will discuss the involvement of autophagy in the pathogenesis of cerebral I/R injury. Finally, we will summarize the latest advances in the interaction between SIRT1 and autophagy in cerebral I/R injury. A good understanding of these relationships would serve to consolidate a framework of mechanisms underlying SIRT1's neuroprotective effects and provides evidence for the development of drugs targeting SIRT1.
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Peng L, Hu G, Yao Q, Wu J, He Z, Law BYK, Hu G, Zhou X, Du J, Wu A, Yu L. Microglia autophagy in ischemic stroke: A double-edged sword. Front Immunol 2022; 13:1013311. [PMID: 36466850 PMCID: PMC9708732 DOI: 10.3389/fimmu.2022.1013311] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Accepted: 10/25/2022] [Indexed: 08/14/2023] Open
Abstract
Ischemic stroke (IS) is one of the major types of cerebrovascular diseases causing neurological morbidity and mortality worldwide. In the pathophysiological process of IS, microglia play a beneficial role in tissue repair. However, it could also cause cellular damage, consequently leading to cell death. Inflammation is characterized by the activation of microglia, and increasing evidence showed that autophagy interacts with inflammation through regulating correlative mediators and signaling pathways. In this paper, we summarized the beneficial and harmful effects of microglia in IS. In addition, we discussed the interplay between microglia autophagy and ischemic inflammation, as along with its application in the treatment of IS. We believe this could help to provide the theoretical references for further study into IS and treatments in the future.
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Affiliation(s)
- Li Peng
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, School of Pharmacy, Southwest Medical University, Luzhou, China
- Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou, China
- Department of Medicine Imaging, School of Clinical Medicine, Southwest Medical University, Luzhou, China
| | - Guangqiang Hu
- Department of Anatomy, School of Basic Medical Sciences, Southwest Medical University, Luzhou, China
| | - Qianfang Yao
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, School of Pharmacy, Southwest Medical University, Luzhou, China
- Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Jianming Wu
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, School of Pharmacy, Southwest Medical University, Luzhou, China
- Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Ziyang He
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, School of Pharmacy, Southwest Medical University, Luzhou, China
- Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Betty Yuen-Kwan Law
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macao, Macao SAR, China
| | - Guishan Hu
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, School of Pharmacy, Southwest Medical University, Luzhou, China
- Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Xiaogang Zhou
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, School of Pharmacy, Southwest Medical University, Luzhou, China
- Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Junrong Du
- Key Laboratory of Drug Targeting and Drug Delivery Systems of Ministry of Education, Department of Pharmacology, West China School of Pharmacy, Sichuan University, Chengdu, China
| | - Anguo Wu
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, School of Pharmacy, Southwest Medical University, Luzhou, China
- Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Lu Yu
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, School of Pharmacy, Southwest Medical University, Luzhou, China
- Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou, China
- Department of Medicine Imaging, School of Clinical Medicine, Southwest Medical University, Luzhou, China
- Department of Chemistry, School of Basic Medical Sciences, Southwest Medical University, Luzhou, China
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Cai L, Gao L, Zhang G, Zeng H, Wu X, Tan X, Qian C, Chen G. DJ-1 Alleviates Neuroinflammation and the Related Blood-Spinal Cord Barrier Destruction by Suppressing NLRP3 Inflammasome Activation via SOCS1/Rac1/ROS Pathway in a Rat Model of Traumatic Spinal Cord Injury. J Clin Med 2022; 11:jcm11133716. [PMID: 35807002 PMCID: PMC9267719 DOI: 10.3390/jcm11133716] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/19/2022] [Accepted: 06/22/2022] [Indexed: 02/06/2023] Open
Abstract
DJ-1 has been shown to play essential roles in neuronal protection and anti-inflammation in nervous system diseases. This study aimed to explore how DJ-1 regulates neuroinflammation after traumatic spinal cord injury (t-SCI). The rat model of spinal cord injury was established by the clamping method. The Basso, Beattie, Bresnahan (BBB) score and the inclined plane test (IPT) were used to evaluate neurological function. Western blot was then applied to test the levels of DJ-1, NLRP3, SOCS1, and related proinflammatory factors (cleaved caspase 1, IL-1β and IL-18); ROS level was also examined. The distribution of DJ-1 was assessed by immunofluorescence staining (IF). BSCB integrity was assessed by the level of MMP-9 and tight junction proteins (Claudin-5, Occludin and ZO-1). We found that DJ-1 became significantly elevated after t-SCI and was mainly located in neurons. Knockdown of DJ-1 with specific siRNA aggravated NLRP3 inflammasome-related neuroinflammation and strengthened the disruption of BSCB integrity. However, the upregulation of DJ-1 by Sodium benzoate (SB) reversed these effects and improved neurological function. Furthermore, SOCS1-siRNA attenuated the neuroprotective effects of DJ-1 and increased the ROS, Rac1 and NLRP3. In conclusion, DJ-1 may alleviate neuroinflammation and the related BSCB destruction after t-SCI by suppressing NLRP3 inflammasome activation by SOCS1/Rac1/ROS pathways. DJ-1 shows potential as a feasible target for mediating neuroinflammation after t-SCI.
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Affiliation(s)
- Lingxin Cai
- Department of Neurological Surgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; (L.C.); (L.G.); (G.Z.); (H.Z.); (X.W.); (X.T.)
- Key Laboratory of Precise Treatment and Clinical Translational Research of Neurological Diseases, Hangzhou 310009, China
| | - Liansheng Gao
- Department of Neurological Surgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; (L.C.); (L.G.); (G.Z.); (H.Z.); (X.W.); (X.T.)
- Key Laboratory of Precise Treatment and Clinical Translational Research of Neurological Diseases, Hangzhou 310009, China
| | - Guoqiang Zhang
- Department of Neurological Surgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; (L.C.); (L.G.); (G.Z.); (H.Z.); (X.W.); (X.T.)
- Key Laboratory of Precise Treatment and Clinical Translational Research of Neurological Diseases, Hangzhou 310009, China
| | - Hanhai Zeng
- Department of Neurological Surgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; (L.C.); (L.G.); (G.Z.); (H.Z.); (X.W.); (X.T.)
- Key Laboratory of Precise Treatment and Clinical Translational Research of Neurological Diseases, Hangzhou 310009, China
| | - Xinyan Wu
- Department of Neurological Surgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; (L.C.); (L.G.); (G.Z.); (H.Z.); (X.W.); (X.T.)
- Key Laboratory of Precise Treatment and Clinical Translational Research of Neurological Diseases, Hangzhou 310009, China
| | - Xiaoxiao Tan
- Department of Neurological Surgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; (L.C.); (L.G.); (G.Z.); (H.Z.); (X.W.); (X.T.)
- Key Laboratory of Precise Treatment and Clinical Translational Research of Neurological Diseases, Hangzhou 310009, China
| | - Cong Qian
- Department of Neurological Surgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; (L.C.); (L.G.); (G.Z.); (H.Z.); (X.W.); (X.T.)
- Key Laboratory of Precise Treatment and Clinical Translational Research of Neurological Diseases, Hangzhou 310009, China
- Correspondence: (C.Q.); (G.C.)
| | - Gao Chen
- Department of Neurological Surgery, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; (L.C.); (L.G.); (G.Z.); (H.Z.); (X.W.); (X.T.)
- Key Laboratory of Precise Treatment and Clinical Translational Research of Neurological Diseases, Hangzhou 310009, China
- Correspondence: (C.Q.); (G.C.)
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