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He S, Jiang X, Yang J, Wu Y, Shi J, Wu X, Du S, Zhang Y, Gong L, Dong S, Yu J. Nicotinamide mononucleotide alleviates endotoxin-induced acute lung injury by modulating macrophage polarization via the SIRT1/NF-κB pathway. PHARMACEUTICAL BIOLOGY 2024; 62:22-32. [PMID: 38100537 PMCID: PMC10732210 DOI: 10.1080/13880209.2023.2292256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 12/03/2023] [Indexed: 12/17/2023]
Abstract
CONTEXT Sepsis-induced acute lung injury (ALI) is a severe condition with limited effective therapeutics; nicotinamide mononucleotide (NMN) has been reported to exert anti-inflammatory activities. OBJECTIVE This study explores the potential mechanisms by which NMN ameliorates sepsis-induced ALI in vivo and in vitro. MATERIALS AND METHODS Cultured MH-S cells and a murine model were used to evaluate the effect of NMN on sepsis-induced ALI. MH-S cells were stimulated with LPS (1 μg/mL) and NMN (500 μM) for 12 h grouping as control, LPS, and LPS + NMN. Cell viability, apoptotic status, and M1/2 macrophage-related markers were detected. The mice were pretreated intraperitoneally with NMN (500 mg/kg) and/or EX-527 (5 mg/kg) 1 h before LPS injection and randomized into 7 groups (n = 8): control, LPS, LPS + NMN, NMN, LPS + NMN + EX-527 (a SIRT1 inhibitor), LPS + EX-527, and EX-527. After 12 h, lung histopathology, W/D ratio, MPO activity, NAD+ and ATP levels, M1/2 macrophage-related markers, and expression of the SIRT1/NF-κB pathway were detected. RESULTS In MH-S cells, NMN significantly decreased the apoptotic rate from 12.25% to 5.74%. In septic mice, NMN improved the typical pathologic findings in lungs and reduced W/D ratio and MPO activity, but increased NAD+ and ATP levels. Additionally, NMN suppressed M1 but promoted M2 polarization, and upregulated the expression of SIRT1, with inhibition of NF-κB-p65 acetylation and phosphorylation. Furthermore, inhibition of SIRT1 reversed the effects of NMN-induced M2 macrophage polarization. CONCLUSIONS NMN protects against sepsis-induced ALI by promoting M2 macrophage polarization via the SIRT1/NF-κB pathway, it might be an effective strategy for preventing or treating sepsis-induced ALI.
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Affiliation(s)
- Simeng He
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
| | - Xianhong Jiang
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
| | - Jing Yang
- Tianjin Key Laboratory of Acute Abdomen Disease Associated Organ Injury and ITCWM Repair, Institute of Acute Abdominal Diseases of Integrated Traditional Chinese and Western Medicine, Tianjin Nankai Hospital, Tianjin, China
| | - Ya Wu
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
| | - Jia Shi
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
| | - Xiaoyang Wu
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
| | - Shihan Du
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
| | - Yuan Zhang
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
| | - Lirong Gong
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
| | - Shuan Dong
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
| | - Jianbo Yu
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China
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Zhu S, Liu X, Lu X, Liao Q, Luo H, Tian Y, Cheng X, Jiang Y, Liu G, Chen J. Biomaterials and tissue engineering in traumatic brain injury: novel perspectives on promoting neural regeneration. Neural Regen Res 2024; 19:2157-2174. [PMID: 38488550 PMCID: PMC11034597 DOI: 10.4103/1673-5374.391179] [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: 08/10/2023] [Revised: 10/13/2023] [Accepted: 11/20/2023] [Indexed: 04/24/2024] Open
Abstract
Traumatic brain injury is a serious medical condition that can be attributed to falls, motor vehicle accidents, sports injuries and acts of violence, causing a series of neural injuries and neuropsychiatric symptoms. However, limited accessibility to the injury sites, complicated histological and anatomical structure, intricate cellular and extracellular milieu, lack of regenerative capacity in the native cells, vast variety of damage routes, and the insufficient time available for treatment have restricted the widespread application of several therapeutic methods in cases of central nervous system injury. Tissue engineering and regenerative medicine have emerged as innovative approaches in the field of nerve regeneration. By combining biomaterials, stem cells, and growth factors, these approaches have provided a platform for developing effective treatments for neural injuries, which can offer the potential to restore neural function, improve patient outcomes, and reduce the need for drugs and invasive surgical procedures. Biomaterials have shown advantages in promoting neural development, inhibiting glial scar formation, and providing a suitable biomimetic neural microenvironment, which makes their application promising in the field of neural regeneration. For instance, bioactive scaffolds loaded with stem cells can provide a biocompatible and biodegradable milieu. Furthermore, stem cells-derived exosomes combine the advantages of stem cells, avoid the risk of immune rejection, cooperate with biomaterials to enhance their biological functions, and exert stable functions, thereby inducing angiogenesis and neural regeneration in patients with traumatic brain injury and promoting the recovery of brain function. Unfortunately, biomaterials have shown positive effects in the laboratory, but when similar materials are used in clinical studies of human central nervous system regeneration, their efficacy is unsatisfactory. Here, we review the characteristics and properties of various bioactive materials, followed by the introduction of applications based on biochemistry and cell molecules, and discuss the emerging role of biomaterials in promoting neural regeneration. Further, we summarize the adaptive biomaterials infused with exosomes produced from stem cells and stem cells themselves for the treatment of traumatic brain injury. Finally, we present the main limitations of biomaterials for the treatment of traumatic brain injury and offer insights into their future potential.
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Affiliation(s)
- Shihong Zhu
- Department of Neurosurgery, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan Province, China
| | - Xiaoyin Liu
- Department of Neurosurgery, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan Province, China
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu, Sichuan Province, China
| | - Xiyue Lu
- Department of Anesthesiology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan Province, China
| | - Qiang Liao
- Department of Pharmacy, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan Province, China
| | - Huiyang Luo
- Department of Neurosurgery, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan Province, China
- Department of Anesthesiology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan Province, China
| | - Yuan Tian
- Department of Neurosurgery, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan Province, China
| | - Xu Cheng
- Department of Anesthesiology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan Province, China
| | - Yaxin Jiang
- Out-patient Department, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan Province, China
| | - Guangdi Liu
- Department of Respiratory and Critical Care Medicine, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan Province, China
| | - Jing Chen
- Department of Neurosurgery, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan Province, China
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Zhao M, Chen Y, Bao X, Wang Z, Yuan N, Jin Z, Huang Y, Yang L, Yang Y, Zeng L. HuoXueTongFu formula induces M2c macrophages via the MerTK/PI3K/AKT pathway to eliminate NETs in intraperitoneal adhesion in mice. JOURNAL OF ETHNOPHARMACOLOGY 2024; 331:118290. [PMID: 38703872 DOI: 10.1016/j.jep.2024.118290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 05/02/2024] [Accepted: 05/02/2024] [Indexed: 05/06/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE HuoXueTongFu Formula (HXTF) is a traditional Chinese herbal formula that has been used as a supplement and alternative therapy for intraperitoneal adhesion (IA). However, its specific mechanism of action has not been fully understood. AIM OF THE STUDY In surgery, IA presents an inevitable challenge, significantly impacting patients' physical and mental well-being and increasing the financial burden. Our previous research has confirmed the preventive effects of HXTF on IA formation. However, the precise mechanism of its action still needs to be understood. METHODS In this study, the IA model was successfully established by using the Ischemic buttons and treated with HXTF for one week with or without Mer Tyrosine Kinase (MerTK) inhibitor. We evaluated the pharmacodynamic effect of HXTF on IA mice. The MerTK/phosphoinositol 3-kinase (PI3K)/protein kinase B (AKT) pathway-associated proteins were detected by Western blotting. Neutrophil extracellular traps (NETs) were detected by immunofluorescence. Macrophage phenotype was assessed by immunohistochemistry and flow cytometry. Inflammatory cytokines were detected by Real Time Quantitative PCR and Western blotting. RESULTS HXTF reduced inflammatory response and alleviated IA. HXTF significantly enhanced MerTK expression, increased the number of M2c macrophages, and decreased the formation of NETs. In addition, the MerTK/PI3K/AKT pathway was significantly activated by HXTF. However, after using MerTK inhibitors, the role of HXTF in inducing M2c macrophage through activation of the PI3K/AKT pathway was suppressed and there was no inhibitory effect on NETs formation and inflammatory responses, resulting in diminished inhibition of adhesion. CONCLUSION HXTF may improve IA by activating the MerTK/PI3K/AKT pathway to induce M2c polarization, which removes excess NETs and attenuates the inflammatory response.
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Affiliation(s)
- Min Zhao
- School of Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China; Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing 210023, China
| | - Yanqi Chen
- School of Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China; The First School of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Xiaojiang Bao
- School of Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Zhongda Wang
- School of Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Ningning Yuan
- School of Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Zixiang Jin
- School of Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Yuqiu Huang
- School of Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Lili Yang
- Library, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Yousheng Yang
- Department of General Surgery, Suzhou Integrated Traditional Chinese and Western Medicine Hospital, Suzhou, 215101, China.
| | - Li Zeng
- Faculty of Chinese Medicine, Macau University of Science and Technology, Taipa, Macau, China; The First School of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China; Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing 210023, China.
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Wen T, Wen J, Yao C. Remimazolam inhibits postoperative cognitive impairment after cardiopulmonary bypass by alleviating neuroinflammation and promoting microglia M2 polarization. Brain Res 2024; 1838:148975. [PMID: 38702024 DOI: 10.1016/j.brainres.2024.148975] [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: 03/20/2024] [Revised: 04/22/2024] [Accepted: 04/30/2024] [Indexed: 05/06/2024]
Abstract
Postoperative cognitive impairment (POCD) is a complication of cardiopulmonary bypass (CPB). Remimazolam is an ultra-short acting benzodiazepine that can be used for anesthesia or sedation during surgery. This study investigated the role of remimazolam in inflammasome activation and microglia polarization using CPB rat model and lipopolysaccharide (LPS)-induced microglia model. The cognitive function of rats was evaluated by Morris water maze. TUNEL assay was performed to detect apoptosis. Inflammatory cytokines concentration were analyzed by enzyme-linked immunosorbent assay. Reverse transcription-polymerase chain reaction was used to assess the expression of inflammasome and M1/M2-related microglia markers. Flow cytometry was performed to evaluate the expression of CD16/32 and CD206 in microglia. The results showed that remimazolam improved the memory and learning abilities in CPB rats. CPB rats and LPS-treated microglia showed increased apoptosis, pro-inflammatory cytokines level, and inflammasome expression as well as decreased microglia activation, while the results were reversed after remimazolam treatment. Besides, remimazolam treatment promoted the expression of M2-related markers in LPS-treated microglia. Nigericin treatment reversed the increased M2-related mRNA levels and the decreased apoptosis and inflammatory responses induced by remimazolam treatment. In conclusion, remimazolam attenuated POCD after CPB through regulating neuroinflammation and microglia M2 polarization, suggesting a new insight into the clinical treatment of POCD after CPB.
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Affiliation(s)
- Tao Wen
- Department of Anesthesiology, Shenzhen Children's Hospital, Shenzhen, China
| | - Jing Wen
- Laboratory Department of Peking University Shenzhen Hospital, Shenzhen, China
| | - Cuicui Yao
- Department of Anesthesiology, Shenzhen Children's Hospital, Shenzhen, China.
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Wu F, Liang T, Liu Y, Sun Y, Wang B. Hydrogen mitigates brain injury by prompting NEDD4-CX43- mediated mitophagy in traumatic brain injury. Exp Neurol 2024; 379:114876. [PMID: 38942265 DOI: 10.1016/j.expneurol.2024.114876] [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: 02/04/2024] [Revised: 06/05/2024] [Accepted: 06/25/2024] [Indexed: 06/30/2024]
Abstract
BACKGROUND Hydrogen (H2) has emerged as a potential therapeutic intervention for traumatic brain injury (TBI). However, the precise mechanism underlying H2's neuroprotective effects in TBI remain incompletely understood. METHODS TBI mouse model was induced using the controlled cortical impact (CCI) method, and a cell model was established by exposing astrocytes to lipopolysaccharide (LPS). Cell viability was detected by CCK-8 kits. Cell apoptosis was measured by flow cytometry. ELISA was used to detect cytokine quantification. Protein and gene expression was detected by western blot and RT-PCR analysis. Co-immunoprecipitation (CO-IP) were employed for protein-protein interactions. Morris water maze test and rotarod test were applied for TBI mice. RESULTS H2 treatment effectively inhibited the LPS-induced cell injury and cell apoptosis in astrocytes. NEDD4 expression was increased following H2 treatment coupled with enhanced mitophagy in LPS-treated astrocytes. Overexpression of NEDD4 and down-regulation of connexin 43 (CX43) mirrored the protective effects of H2 treatment in LPS-exposed astrocytes. NEDD4 interacts CX43 to regulates the ubiquitinated degradation of CX43. While overexpression of CX43 reversed the protective effects of H2 treatment in LPS-exposed astrocytes. In addition, H2 treatment significantly alleviated brain injury in TBI mouse model. CONCLUSION H2 promoted NEDD4-CX43 mediated mitophagy to protect brain injury induced by TBI, highlighting a novel pathway underlying the therapeutic effects of H2 in TBI.
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Affiliation(s)
- Fan Wu
- Department of Anesthesiology, Sanbo Brain Hospital, Capital Medical University, Beijing 100095, PR China
| | - Tao Liang
- Department of Anesthesiology, Xuanwu Hospital, Capital Medical University, Beijing 100053, PR China
| | - Yang Liu
- Department of Anesthesiology, Sanbo Brain Hospital, Capital Medical University, Beijing 100095, PR China
| | - Yongxing Sun
- Department of Anesthesiology, Sanbo Brain Hospital, Capital Medical University, Beijing 100095, PR China.
| | - Baoguo Wang
- Department of Anesthesiology, Sanbo Brain Hospital, Capital Medical University, Beijing 100095, PR China.
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Jalali Kondori B, Abdolmaleki A, Raei M, Ghorbani Alvanegh A, Esmaeili Gouvarchin Ghaleh H. Intraperitoneal injection of mesenchymal stem cells-conditioned media (MSCS-CM) treated monocyte can potentially alleviate motor defects in experimental autoimmune encephalomyelitis female mice; An original experimental study. Transpl Immunol 2024; 85:102067. [PMID: 38839021 DOI: 10.1016/j.trim.2024.102067] [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: 09/29/2023] [Revised: 05/25/2024] [Accepted: 06/01/2024] [Indexed: 06/07/2024]
Abstract
INTRODUCTION Multiple sclerosis (MS), as a destructive pathology of myelin in central nervous system (CNS), causes physical and mental complications. Experimental autoimmune encephalomyelitis (EAE) is laboratory model of MS widely used for CNS-associated inflammatory researches. Cell therapy using macrophage M2 (MPM2) is a cell type with anti-inflammatory characteristics for all inflammatory-based neuropathies. This experimental study investigated the probable therapeutic anti-inflammatory effects of intraperitoneal (IP) injection of MPM2 on alleviation of motor defect in EAE-affected animals. MATERIALS AND METHODS 24 C57/BL6 female mice were divided into four groups of EAE, EAE + Dexa, EAE + PBS, and EAE + MP2. EAE was induced through deep cervical injection of spinal homogenate of guinea pigs. MPM2 cells were harvested from bone marrow and injected (106cells/ml) in three days of 10, 13 and 16 post-immunizations (p.i). Clinical score (CS), anti-inflammatory cytokines (IL-4, IL-10), pro-inflammatory gene expression (TNF-α, IL-1β) and histopathological investigations (HE, Nissl and Luxol Fast Blue) were considered. Data were analyzed using SPSS software (v.19) and p < 0.05 was considered significant level. RESULTS During EAE induction, the mean animal weight was decreased (p < 0.05); besides, following MPM2 injection, the weight gain was applied (p < 0.05) in EAE + MPM2 groups than control. Increased (p < 0.05) levels of CS was found during EAE induction in days 17-28 in EAE animals; besides, CS was decreased (p < 0.05) in EAE + MPM2 group than EAE animals. Also, in days 25-28 of experiment, the CS was decreased (p < 0.05) in EAE + MPM2 than EAE + Dexa. Histopathological assessments revealed low density of cell nuclei in corpus callosum, microscopically. LFB staining also showed considerable decrease in white matter density of corpus callosum in EAE group. Acceleration of white matter density was found in EAE + MPM2 group following cell therapy procedure. Genes expression of TNF-α, IL-1β along with IL-4 and IL-10 were decreased (p < 0.05) in EAE + MPM2 group. CONCLUSION IP injection of MPM2 to EAE-affected female mice can potentially reduce the CNS inflammation, neuronal death and myelin destruction. MPM2 cell therapy can improve animal motor defects.
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Affiliation(s)
- Bahman Jalali Kondori
- Department of Anatomical Sciences, Faculty of Medicine, Baqiyatallah University of Medical Sciences, Tehran, Iran; Baqiyatallah Research Center for Gastroenterology and Liver Diseases (BRCGL), Baqiyatallah University of Medical Sciences, Tehran, Iran.
| | - Amir Abdolmaleki
- Department of Anatomical Sciences, Medical School, Baqiyatallah University of Medical Sciences, Tehran, Iran; Department of Operating Room, Nahavand School of Allied Medical Sciences, Hamadan University of Medical Sciences, Hamadan, Iran.
| | - Mahdi Raei
- Health Research Center, Life Style Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran.
| | | | - Hadi Esmaeili Gouvarchin Ghaleh
- Applied Virology Research Center, Biomedicine Technologies Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran.
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Xue Y, Zhang Y, Wu Y, Zhao T. Activation of GPER-1 Attenuates Traumatic Brain Injury-Induced Neurological Impairments in Mice. Mol Neurobiol 2024; 61:5614-5627. [PMID: 38217667 DOI: 10.1007/s12035-024-03919-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Accepted: 01/01/2024] [Indexed: 01/15/2024]
Abstract
This study aimed to investigate the effects of G1-activated G protein-coupled estrogen receptor 1 (GPER1) on neurological impairments and neuroinflammation in traumatic brain injury (TBI) mice. The controlled cortical impingement (CCI) method was used to establish the TBI model. The mice were subjected to ovariectomy (OVX) for two weeks prior to modeling. GPER1 agonist G1 was administered by intracerebroventricular injection. Brain tissue water content was detected by wet/dry method, and blood-brain barrier damage was detected by Evans blue extravasation. The neurological impairments in mice were evaluated by open field test, Y-maze test, nest-building test, object location memory test and novel object recognition test. Ionized calcium-binding adapter molecule 1 (Iba1) staining was used to indicate the activation of microglia. Expression of M1/M2-type microglia markers and inflammatory factors were evaluated by ELISA and qRT-PCR. The G1 administration significantly reduced cerebral edema and Evans blue extravasation at injury ipsilateral cortex and basal ganglia in TBI mice. Activation of GPER1 by G1 improved the anxiety behavior and the cognitive dysfunction of mice induced by TBI. G1 administration significantly decreased Iba1-positive staining cells and the mRNA levels of CD86, macrophage cationic peptide 1 (Mcp-1), nitric oxide synthase 2 (Nos2), interleukin 1 beta (IL-1β), and macrophage inflammatory protein-2 (MIP-2), while increased the mRNA levels of interleukin 10 (IL-10), arginase1 (Arg-1) and CD206. Activation of GPER1 through G1 administration has the potential to ameliorate cognitive dysfunction induced by TBI in mice. It may also inhibit the activation of M1 microglia in cortical tissue resulting from TBI, while promoting the activation of M2 microglia and contributing to the regulation of inflammatory responses.
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Affiliation(s)
- Yafei Xue
- Department of Neurosurgery, Tangdu Hospital, Fourth Military Medical University, No. 569 Xinsi Road, Baqiao District, Xi'an, 710038, Shaanxi, China
| | - Yunze Zhang
- Department of Neurosurgery, Tangdu Hospital, Fourth Military Medical University, No. 569 Xinsi Road, Baqiao District, Xi'an, 710038, Shaanxi, China
| | - Yingxi Wu
- Department of Neurosurgery, Tangdu Hospital, Fourth Military Medical University, No. 569 Xinsi Road, Baqiao District, Xi'an, 710038, Shaanxi, China.
| | - Tianzhi Zhao
- Department of Neurosurgery, Tangdu Hospital, Fourth Military Medical University, No. 569 Xinsi Road, Baqiao District, Xi'an, 710038, Shaanxi, China.
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Zhao J, Zhao G, Lang J, Sun B, Feng S, Li D, Sun G. Astragaloside IV ameliorated neuroinflammation and improved neurological functions in mice exposed to traumatic brain injury by modulating the PERK-eIF2α-ATF4 signaling pathway. J Investig Med 2024:10815589241261293. [PMID: 38869170 DOI: 10.1177/10815589241261293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
Increasing evidence suggests that endoplasmic reticulum stress (ER stress) and neuroinflammation are involved in the complex pathological process of traumatic brain injury (TBI). However, the pathological mechanisms of their interactions in TBI remain incompletely elucidated. Therefore, investigating and ameliorating neuroinflammation and ER stress post-TBI may represent effective strategies for treating secondary brain injury. Astragaloside IV (AS-IV) has been reported as a potential neuroprotective and anti-inflammatory agent in neurological diseases. This study utilized a mouse TBI model to investigate the pathological mechanisms and crosstalk of ER stress, neuroinflammation, and microglial cell morphology in TBI, as well as the mechanisms and potential of AS-IV in improving TBI. The research revealed that post-TBI, inflammatory factors IL-6, IL-1β, and TNF-α increased, microglial cells were activated, and the specific inhibitor of PERK phosphorylation, GSK2656157, intervened to alleviate neuroinflammation and inhibit microglial cell activation. Post-TBI, levels of ER stress-related proteins (p-PERK, p-eIF2a, ATF4, ATF6, and p-IRE1a) increased. Following AS-IV treatment, neurological dysfunction in TBI mice improved. Levels of p-PERK, p-eIF2a, and ATF4 decreased, along with reductions in inflammatory factors IL-6, IL-1β, and TNF-α. Changes in microglial/macrophage M1/M2 polarization were observed. Additionally, the PERK activator CCT020312 intervention eliminated the impact of AS-IV on post-TBI inflammation and ER stress-related proteins p-PERK, p-eIF2a, and ATF4. These results indicate that AS-IV alleviates neuroinflammation and brain damage post-TBI through the PERK pathway, offering new directions and theoretical insights for TBI treatment.
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Affiliation(s)
- Jianfei Zhao
- Department of Neurosurgery, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, The People's Republic of China
- Department of Neurosurgery, The People's Hospital of Shijiazhuang City, Shijiazhuang, The People's Republic of China
| | - Gengshui Zhao
- Department of Neurosurgery, The People's Hospital of Hengshui City, Hengshui, The People's Republic of China
| | - Jiadong Lang
- Department of Neurosurgery, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, The People's Republic of China
| | - Boyu Sun
- Department of Neurosurgery, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, The People's Republic of China
| | - Shiyao Feng
- Department of Neurosurgery, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, The People's Republic of China
| | - Dongsheng Li
- Department of Neurosurgery, The People's Hospital of Shijiazhuang City, Shijiazhuang, The People's Republic of China
| | - Guozhu Sun
- Department of Neurosurgery, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, The People's Republic of China
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Liu J, Gong W, Liu P, Li Y, Jiang H, Wu C, Wu X, Zhao Y, Ren J. Osteopontin regulation of MerTK + macrophages promotes Crohn's disease intestinal fibrosis. iScience 2024; 27:110226. [PMID: 39021800 PMCID: PMC11253513 DOI: 10.1016/j.isci.2024.110226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 04/04/2024] [Accepted: 06/06/2024] [Indexed: 07/20/2024] Open
Abstract
The pathogenesis of intestinal fibrosis in Crohn's disease (CD) remains unclear. Mer receptor tyrosine kinase (MerTK) is an immunosuppressive protein specifically expressed in macrophages. Osteopontin (OPN), also known as secreted phosphoprotein 1, contributes to inflammation and wound repair. This study investigates the potential profibrotic pathway in MerTK+ macrophages in order to provide a possible therapeutic target for intestinal fibrosis. MerTK expression in the inflamed and stenotic bowels was evaluated. The MerTK/ERK/TGF-β1 pathway was overactivated in the fibrotic intestinal tissues of patients with CD. This pathway was induced by epithelial cell apoptosis, resulting in activated fibroblasts with increased TGF-β1 secretion. OPN upregulated TGF production by altering ERK1/2 phosphorylation, as evidenced by OPN or MerTK knockdown and OPN overexpression in vitro. MerTK inhibitor UNC2025 alleviated intestinal fibrosis in mouse colitis models, suggesting a potential therapeutic target for intestinal fibrosis in patients with CD.
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Affiliation(s)
- Juanhan Liu
- Department of General Surgery, Research Institute of General Surgery, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China
| | - Wenbin Gong
- Department of General Surgery, School of Medicine, Southeast University, Nanjing, China
| | - Peizhao Liu
- Department of General Surgery, Research Institute of General Surgery, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China
| | - Yangguang Li
- Department of General Surgery, Research Institute of General Surgery, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China
| | - Haiyang Jiang
- Department of General Surgery, BenQ Medical Center, Nanjing Medical School, Nanjing, China
| | - Cunxia Wu
- Department of General Surgery, BenQ Medical Center, Nanjing Medical School, Nanjing, China
| | - Xiuwen Wu
- Department of General Surgery, Research Institute of General Surgery, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China
| | - Yun Zhao
- Department of General Surgery, BenQ Medical Center, Nanjing Medical School, Nanjing, China
| | - Jianan Ren
- Department of General Surgery, Research Institute of General Surgery, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China
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Zong Y, Dai Y, Yan J, Yu B, Wang D, Mao S. The roles of circular RNAs in nerve injury and repair. Front Mol Neurosci 2024; 17:1419520. [PMID: 39077756 PMCID: PMC11284605 DOI: 10.3389/fnmol.2024.1419520] [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: 04/22/2024] [Accepted: 06/21/2024] [Indexed: 07/31/2024] Open
Abstract
Nerve injuries significantly impact the quality of life for patients, with severe cases posing life-threatening risks. A comprehensive understanding of the pathophysiological mechanisms underlying nerve injury is crucial to the development of effective strategies to promote nerve regeneration. Circular RNAs (circRNAs), a recently characterized class of RNAs distinguished by their covalently closed-loop structures, have been shown to play an important role in various biological processes. Numerous studies have highlighted the pivotal role of circRNAs in nerve regeneration, identifying them as potential therapeutic targets. This review aims to succinctly outline the latest advances in the role of circRNAs related to nerve injury repair and the underlying mechanisms, including peripheral nerve injury, traumatic brain injury, spinal cord injury, and neuropathic pain. Finally, we discuss the potential applications of circRNAs in drug development and consider the potential directions for future research in this field to provide insights into circRNAs in nerve injury repair.
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Affiliation(s)
| | | | | | | | - Dong Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, School of Medicine, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Susu Mao
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, School of Medicine, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
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11
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Li MC, Lai YL, Kuo PH, Reddy JS, Chen CM, Manimala J, Wang PC, Wu MS, Chang CY, Yang CM, Lin CY, Huang YC, Chiu CH, Chang L, Lin WH, Yeh TK, Yen WC, Hsieh HP. Discovery of Dual MER/AXL Kinase Inhibitors as Bifunctional Small Molecules for Inhibiting Tumor Growth and Enhancing Tumor Immune Microenvironment. J Med Chem 2024; 67:10906-10927. [PMID: 38913493 PMCID: PMC11247487 DOI: 10.1021/acs.jmedchem.4c00400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Revised: 05/31/2024] [Accepted: 06/11/2024] [Indexed: 06/26/2024]
Abstract
A series of bifunctional compounds have been discovered for their dual functionality as MER/AXL inhibitors and immune modulators. The furanopyrimidine scaffold, renowned for its suitability in kinase inhibitor discovery, offers at least three distinct pharmacophore access points. Insights from molecular modeling studies guided hit-to-lead optimization, which revealed that the 1,3-diketone side chain hybridized with furanopyrimidine scaffold that respectively combined amino-type substituent and 1H-pyrazol-4-yl substituent on the top and bottom of the aryl regions to produce 22 and 33, exhibiting potent antitumor activities in various syngeneic and xenograft models. More importantly, 33 demonstrated remarkable immune-modulating activity by upregulating the expression of total T-cells, cytotoxic CD8+ T-cells, and helper CD4+ T-cells in the spleen. These findings underscored the bifunctional capabilities of 33 (BPR5K230) with excellent oral bioavailability (F = 54.6%), inhibiting both MER and AXL while modulating the tumor microenvironment and highlighting its diverse applicability for further studies to advance its therapeutic potential.
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Affiliation(s)
- Mu-Chun Li
- Institute
of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350401, Taiwan, ROC
- Biomedical
Translation Research Center (BioTReC), Academia Sinica, Taipei City 115202, Taiwan, ROC
| | - You-Liang Lai
- Institute
of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350401, Taiwan, ROC
| | - Po-Hsien Kuo
- Institute
of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350401, Taiwan, ROC
| | - Julakanti Satyanarayana Reddy
- Institute
of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350401, Taiwan, ROC
| | - Chih-Ming Chen
- Institute
of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350401, Taiwan, ROC
| | - Julakanti Manimala
- Institute
of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350401, Taiwan, ROC
| | - Pei-Chen Wang
- Institute
of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350401, Taiwan, ROC
| | - Ming-Shiem Wu
- Institute
of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350401, Taiwan, ROC
| | - Chun-Yu Chang
- Institute
of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350401, Taiwan, ROC
| | - Chen-Ming Yang
- Institute
of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350401, Taiwan, ROC
| | - Chin-Yu Lin
- Institute
of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350401, Taiwan, ROC
| | - Yu-Chen Huang
- Institute
of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350401, Taiwan, ROC
| | - Chun-Hsien Chiu
- Institute
of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350401, Taiwan, ROC
| | - Ling Chang
- Institute
of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350401, Taiwan, ROC
| | - Wen-Hsing Lin
- Institute
of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350401, Taiwan, ROC
| | - Teng-Kuang Yeh
- Institute
of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350401, Taiwan, ROC
| | - Wan-Ching Yen
- Institute
of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350401, Taiwan, ROC
| | - Hsing-Pang Hsieh
- Institute
of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350401, Taiwan, ROC
- Biomedical
Translation Research Center (BioTReC), Academia Sinica, Taipei City 115202, Taiwan, ROC
- Department
of Chemistry, National Tsing Hua University, Hsinchu City 300044, Taiwan, ROC
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12
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Yan M, Sun Z, Zhang S, Yang G, Jiang X, Wang G, Li R, Wang Q, Tian X. SOCS modulates JAK-STAT pathway as a novel target to mediate the occurrence of neuroinflammation: Molecular details and treatment options. Brain Res Bull 2024; 213:110988. [PMID: 38805766 DOI: 10.1016/j.brainresbull.2024.110988] [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: 01/22/2024] [Revised: 04/28/2024] [Accepted: 05/26/2024] [Indexed: 05/30/2024]
Abstract
SOCS (Suppressor of Cytokine Signalling) proteins are intracellular negative regulators that primarily modulate and inhibit cytokine-mediated signal transduction, playing a crucial role in immune homeostasis and related inflammatory diseases. SOCS act as inhibitors by regulating the Janus kinase-signal transducer and activator of transcription (JAK-STAT) signaling pathway, thereby intervening in the pathogenesis of inflammation and autoimmune diseases. Recent studies have also demonstrated their involvement in central immunity and neuroinflammation, showing a dual functionality. However, the specific mechanisms of SOCS in the central nervous system remain unclear. This review thoroughly elucidates the specific mechanisms linking the SOCS-JAK-STAT pathway with the inflammatory manifestations of neurodegenerative diseases. Based on this, it proposes the theory that SOCS proteins can regulate the JAK-STAT pathway and inhibit the occurrence of neuroinflammation. Additionally, this review explores in detail the current therapeutic landscape and potential of targeting SOCS in the brain via the JAK-STAT pathway for neuroinflammation, offering insights into potential targets for the treatment of neurodegenerative diseases.
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Affiliation(s)
- Min Yan
- College of Graduate Education, Shandong Sport University, Jinan 255300, China
| | - Zhiyuan Sun
- College of Graduate Education, Shandong Sport University, Jinan 255300, China
| | - Sen Zhang
- College of Graduate Education, Shandong Sport University, Jinan 255300, China
| | - Guangxin Yang
- College of Graduate Education, Shandong Sport University, Jinan 255300, China
| | - Xing Jiang
- College of Graduate Education, Shandong Sport University, Jinan 255300, China
| | - Guilong Wang
- College of Graduate Education, Shandong Sport University, Jinan 255300, China
| | - Ran Li
- College of Graduate Education, Shandong Sport University, Jinan 255300, China.
| | - Qinglu Wang
- College of Graduate Education, Shandong Sport University, Jinan 255300, China.
| | - Xuewen Tian
- College of Graduate Education, Shandong Sport University, Jinan 255300, China.
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13
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Zhao T, Zhou Y, Zhang D, Han D, Ma J, Li S, Li T, Hu S, Li Z. Inhibition of TREM-1 alleviates neuroinflammation by modulating microglial polarization via SYK/p38MAPK signaling pathway after traumatic brain injury. Brain Res 2024; 1834:148907. [PMID: 38570153 DOI: 10.1016/j.brainres.2024.148907] [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: 01/25/2024] [Revised: 03/24/2024] [Accepted: 03/31/2024] [Indexed: 04/05/2024]
Abstract
BACKGROUND Traumatic brain injury (TBI), as a major public health problem, is characterized by high incidence rate, disability rate, and mortality rate. Neuroinflammation plays a crucial role in the pathogenesis of TBI. Triggering receptor expressed on myeloid cells-1 (TREM-1) is recognized as an amplifier of the inflammation in diseases of the central nervous system (CNS). However, the function of TREM-1 remains unclear post-TBI. This study aimed to investigate the function of TREM-1 in neuroinflammation induced by TBI. METHODS Brain water content (BWC), modified neurological severity score (mNSS), and Morris Water Maze (MWM) were measured to evaluate the effect of TREM-1 inhibition on nervous system function and outcome after TBI. TREM-1 expression in vivo was evaluated by Western blotting. The cellular localization of TREM-1 in the damaged region was observed via immunofluorescence staining. We also conducted Western blotting to examine expression of SYK, p-SYK and other downstream proteins. RESULTS We found that inhibition of TREM-1 reduced brain edema, decreased mNSS and improved neurobehavioral outcomes after TBI. It was further determined that TREM-1 was expressed on microglia and modulated subtype transition of microglia. Inhibition of TREM-1 alleviated neuroinflammation, which was associated with SYK/p38MAPK signaling pathway. CONCLUSIONS These findings suggest that TREM-1 can be a potential clinical therapeutic target for alleviating neuroinflammation after TBI.
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Affiliation(s)
- Tianqi Zhao
- Department of Forensic Science, Xuzhou Medical University, Xuzhou, Jiangsu, China; Jiangsu Medical Engineering Research Center of Gene Detection, Xuzhou, Jiangsu, China
| | - Yuxin Zhou
- Department of Forensic Science, Xuzhou Medical University, Xuzhou, Jiangsu, China; Jiangsu Medical Engineering Research Center of Gene Detection, Xuzhou, Jiangsu, China
| | - Dabing Zhang
- Department of Forensic Science, Xuzhou Medical University, Xuzhou, Jiangsu, China; Jiangsu Medical Engineering Research Center of Gene Detection, Xuzhou, Jiangsu, China
| | - Dong Han
- Laboratory of Emergency Medicine, Second Clinical Medical College of Xuzhou Medical University, Xuzhou, Jiangsu, China; Xuzhou Key Laboratory of Emergency Medicine, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Jingyuan Ma
- Department of Forensic Science, Xuzhou Medical University, Xuzhou, Jiangsu, China; Jiangsu Medical Engineering Research Center of Gene Detection, Xuzhou, Jiangsu, China
| | - Shanshan Li
- Department of Forensic Science, Xuzhou Medical University, Xuzhou, Jiangsu, China; Jiangsu Medical Engineering Research Center of Gene Detection, Xuzhou, Jiangsu, China
| | - Ting Li
- Jiangsu Medical Engineering Research Center of Gene Detection, Xuzhou, Jiangsu, China; School of Life Sciences, Xuzhou Medical University, Xuzhou, Jiangsu, China.
| | - Shuqun Hu
- Laboratory of Emergency Medicine, Second Clinical Medical College of Xuzhou Medical University, Xuzhou, Jiangsu, China; Xuzhou Key Laboratory of Emergency Medicine, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China.
| | - Zhouru Li
- Department of Forensic Science, Xuzhou Medical University, Xuzhou, Jiangsu, China; Jiangsu Medical Engineering Research Center of Gene Detection, Xuzhou, Jiangsu, China.
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14
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Wen W, Zhou J, Zhan C, Wang J. Microglia as a Game Changer in Epilepsy Comorbid Depression. Mol Neurobiol 2024; 61:4021-4037. [PMID: 38048030 DOI: 10.1007/s12035-023-03810-0] [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: 12/26/2022] [Accepted: 11/16/2023] [Indexed: 12/05/2023]
Abstract
As one of the most common neurological diseases, epilepsy is often accompanied by psychiatric disorders. Depression is the most universal comorbidity of epilepsy, especially in temporal lobe epilepsy (TLE). Therefore, it is urgently needed to figure out potential mechanisms and the optimization of therapeutic strategies. Microglia play a pivotal role in the coexistent relationship between epilepsy and depression. Activated microglia released cytokines like IL-6 and IL-1β, orchestrating neuroinflammation especially in the hippocampus, worsening both depression and epilepsy. The decrease of intracellular K+ is a common part in various molecular changes. The P2X7-NLRP3-IL-1β is a major inflammatory pathway that disrupts brain network. Extra ATP and CX3CL1 also lead to neuronal excitotoxicity and blood-brain barrier (BBB) disruption. Regulating neuroinflammation aiming at microglia-related molecules is capable of suspending the vicious mutual aggravating circle of epilepsy and depression. Other overlaps between epilepsy and depression lie in transcriptomic, neuroimaging, diagnosis and treatment. Hippocampal sclerosis (HS) and amygdala enlargement (AE) may be the underlying macroscopic pathological changes according to current studies. Extant evidence shows that cognitive behavioral therapy (CBT) and antidepressants like selective serotonin-reuptake inhibitors (SSRIs) are safe, but the effect is limited. Improvement in depression is likely to reduce the frequency of seizure. More comprehensive experiments are warranted to better understand the relationship between them.
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Affiliation(s)
- Wenrong Wen
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou Avenue North, Guangzhou, 1838, Guangdong Province, China
- The First Clinical Medicine College, Southern Medical University, Guangzhou, Guangdong Province, China
- Neural Networks Surgery Team, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Jingsheng Zhou
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou Avenue North, Guangzhou, 1838, Guangdong Province, China
- The First Clinical Medicine College, Southern Medical University, Guangzhou, Guangdong Province, China
- Neural Networks Surgery Team, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Chang'an Zhan
- School of Biomedical Engineering, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Jun Wang
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou Avenue North, Guangzhou, 1838, Guangdong Province, China.
- The First Clinical Medicine College, Southern Medical University, Guangzhou, Guangdong Province, China.
- Neural Networks Surgery Team, Southern Medical University, Guangzhou, Guangdong Province, China.
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15
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Zhang C, Xu C, Jing Y, Cao H, Wang X, Zhao J, Gong Q, Chen S. Deferoxamine Induces Autophagy Following Traumatic Brain Injury via TREM2 on Microglia. Mol Neurobiol 2024; 61:4649-4662. [PMID: 38110648 DOI: 10.1007/s12035-023-03875-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Accepted: 12/11/2023] [Indexed: 12/20/2023]
Abstract
Previous studies have indicated that iron disorder, inflammation, and autophagy play an important role in traumatic brain injury (TBI). The triggering receptor expressed on myeloid cells 2 (TREM2), an immunoglobulin superfamily transmembrane receptor, is involved in inflammation. However, the role of TREM2 in modulating the microglia response in TBI has been rarely investigated. The present study aimed to investigate if the iron chelator deferoxamine (DFO) could ameliorate TBI through autophagy mediated by the TREM2. TBI was developed by the controlled cortical impact (CCI) mouse model and stretching of individual primary cortical microglia taken from the tissue of the rat brain. DFO was intraperitoneally used for intervention. Western blotting assay, qRT-PCR, TUNEL staining, immunofluorescence staining, confocal microscopy analysis, transmission electron microscopy, H&E staining, brain water content measurement, and the neurobehavioral assessments were performed. TREM2 expression was up-regulated in cortex of TBI mice model and in microglia stretching model, which was attenuated by DFO. After the mice were subjected to CCI, DFO treatment significantly up-regulated the protein levels of autophagy compared with the TBI group at 3 days and caused an increase of autophagic vacuoles. Treatment with DFO reduced TBI-induced cell apoptosis, cerebral edema, neuroinflammation, and motor function impairment in mice, at least partly via the mTOR signaling pathway that facilitates the TREM2 activity. The results indicated that the maintenance of iron homeostasis by DFO plays neuroprotection by modulating the inflammatory response to TBI through TREM2-mediated autophagy. This study suggested that TREM2-mediated autophagy might be a potential target for therapeutic intervention in TBI.
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Affiliation(s)
- Chunhao Zhang
- Department of Neurosurgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Chen Xu
- Department of Neurosurgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Yao Jing
- Department of Neurosurgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Heli Cao
- Department of Neurosurgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Xuyang Wang
- Department of Neurosurgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Jianwei Zhao
- Department of Neurosurgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Qiuyuan Gong
- Department of Neurosurgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Shiwen Chen
- Department of Neurosurgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China.
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16
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Xie G, Gao X, Guo Q, Liang H, Yao L, Li W, Ma B, Wu N, Han X, Li J. Cannabidiol ameliorates PTSD-like symptoms by inhibiting neuroinflammation through its action on CB2 receptors in the brain of male mice. Brain Behav Immun 2024; 119:945-964. [PMID: 38759736 DOI: 10.1016/j.bbi.2024.05.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 05/05/2024] [Accepted: 05/12/2024] [Indexed: 05/19/2024] Open
Abstract
Post-traumatic stress disorder (PTSD) is a debilitating mental health disease related to traumatic experience, and its treatment outcomes are unsatisfactory. Accumulating research has indicated that cannabidiol (CBD) exhibits anti-PTSD effects, however, the underlying mechanism of CBD remains inadequately investigated. Although many studies pertaining to PTSD have primarily focused on aberrations in neuronal functioning, the present study aimed to elucidate the involvement and functionality of microglia/macrophages in PTSD while also investigated the modulatory effects of CBD on neuroinflammation associated with this condition. We constructed a modified single-prolonged stress (SPS) mice PTSD model and verified the PTSD-related behaviors by various behavioral tests (contextual freezing test, elevated plus maze test, tail suspension test and novel object recognition test). We observed a significant upregulation of Iba-1 and alteration of microglial/macrophage morphology within the prefrontal cortex and hippocampus, but not the amygdala, two weeks after the PTSD-related stress, suggesting a persistent neuroinflammatory phenotype in the PTSD-modeled group. CBD (10 mg/kg, i.p.) inhibited all PTSD-related behaviors and reversed the alterations in both microglial/macrophage quantity and morphology when administered prior to behavioral assessments. We further found increased pro-inflammatory factors, decreased PSD95 expression, and impaired synaptic density in the hippocampus of the modeled group, all of which were also restored by CBD treatment. CBD dramatically increased the level of anandamide, one of the endocannabinoids, and cannabinoid type 2 receptors (CB2Rs) transcripts in the hippocampus compared with PTSD-modeled group. Importantly, we discovered the expression of CB2Rs mRNA in Arg-1-positive cells in vivo and found that the behavioral effects of CBD were diminished by CB2Rs antagonist AM630 (1 mg/kg, i.p.) and both the behavioral and molecular effects of CBD were abolished in CB2Rs knockout mice. These findings suggest that CBD would alleviate PTSD-like behaviors in mice by suppressing PTSD-related neuroinflammation and upregulation and activation of CB2Rs may serve as one of the underlying mechanisms for this therapeutic effect. The present study offers innovative experimental evidence supporting the utilization of CBD in PTSD treatment from the perspective of its regulation of neuroinflammation, and paves the way for leveraging the endocannabinoid system to regulate neuroinflammation as a potential therapeutic approach for psychiatric disorders.
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Affiliation(s)
- Guanbo Xie
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
| | - Xinwei Gao
- Chinese Institute for Brain Research, Beijing 102206, China
| | - Qingchun Guo
- Chinese Institute for Brain Research, Beijing 102206, China; School of Biomedical Engineering, Capital Medical University, Beijing 100069, China
| | - Haizhen Liang
- Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Lan Yao
- Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Wenjuan Li
- Chinese Institute for Brain Research, Beijing 102206, China
| | - Baiping Ma
- Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Ning Wu
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Xiao Han
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Jin Li
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
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17
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Luo F, Huang C. New Insight into Neuropathic Pain: The Relationship between α7nAChR, Ferroptosis, and Neuroinflammation. Int J Mol Sci 2024; 25:6716. [PMID: 38928421 PMCID: PMC11203537 DOI: 10.3390/ijms25126716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2024] [Revised: 06/15/2024] [Accepted: 06/16/2024] [Indexed: 06/28/2024] Open
Abstract
Neuropathic pain, which refers to pain caused by a lesion or disease of the somatosensory system, represents a wide variety of peripheral or central disorders. Treating neuropathic pain is quite demanding, primarily because of its intricate underlying etiological mechanisms. The central nervous system relies on microglia to maintain balance, as they are associated with serving primary immune responses in the brain next to cell communication. Ferroptosis, driven by phospholipid peroxidation and regulated by iron, is a vital mechanism of cell death regulation. Neuroinflammation can be triggered by ferroptosis in microglia, which contributes to the release of inflammatory cytokines. Conversely, neuroinflammation can induce iron accumulation in microglia, resulting in microglial ferroptosis. Accumulating evidence suggests that neuroinflammation, characterized by glial cell activation and the release of inflammatory substances, significantly exacerbates the development of neuropathic pain. By inhibiting microglial ferroptosis, it may be possible to prevent neuroinflammation and subsequently alleviate neuropathic pain. The activation of the homopentameric α7 subtype of the neuronal nicotinic acetylcholine receptor (α7nAChR) has the potential to suppress microglial activation, transitioning M1 microglia to an M2 phenotype, facilitating the release of anti-inflammatory factors, and ultimately reducing neuropathic pain. Recent years have witnessed a growing recognition of the regulatory role of α7nAChR in ferroptosis, which could be a potential target for treating neuropathic pain. This review summarizes the mechanisms related to α7nAChR and the progress of ferroptosis in neuropathic pain according to recent research. Such an exploration will help to elucidate the relationship between α7nAChR, ferroptosis, and neuroinflammation and provide new insights into neuropathic pain management.
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Affiliation(s)
- Fangting Luo
- School of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, China;
| | - Cheng Huang
- School of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, China;
- Department of Physiology, School of Basic Medicine, Gannan Medical University, Ganzhou 341000, China
- Pain Medicine Research Institute, Gannan Medical University, Ganzhou 341000, China
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18
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Song C, Wang Z, Cao J, Dong Y, Chen Y. Neurotoxic mechanisms of mycotoxins: Focus on aflatoxin B1 and T-2 toxin. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 356:124359. [PMID: 38866317 DOI: 10.1016/j.envpol.2024.124359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 06/04/2024] [Accepted: 06/09/2024] [Indexed: 06/14/2024]
Abstract
Aflatoxin B1 (AFB1) and T-2 toxin are commonly found in animal feed and stored grain, posing a serious threat to human and animal health. Mycotoxins can penetrate brain tissue by compromising the blood-brain barrier, triggering oxidative stress and neuroinflammation, and leading to oxidative damage and apoptosis of brain cells. The potential neurotoxic mechanisms of AFB1 and T-2 toxin were discussed by summarizing the relevant research reports from the past ten years. AFB1 and T-2 toxin cause neuronal damage in the cerebral cortex and hippocampus, leading to synaptic transmission dysfunction, ultimately impairing the nervous system function of the body. The toxic mechanism is related to excessive reactive oxygen species (ROS), oxidative stress, mitochondrial dysfunction, apoptosis, autophagy, and an exaggerated inflammatory response. After passing through the blood-brain barrier, toxins can directly affect glial cells, alter the activation state of microglia and astrocytes, thereby promoting brain inflammation, disrupting the blood-brain barrier, and influencing the synaptic transmission process. We discussed the diverse effects of various concentrations of toxins and different modes of exposure on neurotoxicity. In addition, toxins can also cross the placental barrier, causing neurotoxic symptoms in offspring, as demonstrated in various species. Our goal is to uncover the underlying mechanisms of the neurotoxicity of AFB1 and T-2 toxin and to provide insights for future research, including investigating the impact of mycotoxins on interactions between microglia and astrocytes.
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Affiliation(s)
- Chao Song
- College of Veterinary Medicine, China Agricultural University, Haidian, Beijing, 100193, China
| | - Zixu Wang
- College of Veterinary Medicine, China Agricultural University, Haidian, Beijing, 100193, China
| | - Jing Cao
- College of Veterinary Medicine, China Agricultural University, Haidian, Beijing, 100193, China
| | - Yulan Dong
- College of Veterinary Medicine, China Agricultural University, Haidian, Beijing, 100193, China
| | - Yaoxing Chen
- College of Veterinary Medicine, China Agricultural University, Haidian, Beijing, 100193, China.
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19
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Hou X, Qu X, Chen W, Sang X, Ye Y, Wang C, Guo Y, Shi H, Yang C, Zhu K, Zhang Y, Xu H, Lv L, Zhang D, Hou L. CD36 deletion prevents white matter injury by modulating microglia polarization through the Traf5-MAPK signal pathway. J Neuroinflammation 2024; 21:148. [PMID: 38840180 PMCID: PMC11155181 DOI: 10.1186/s12974-024-03143-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 05/27/2024] [Indexed: 06/07/2024] Open
Abstract
BACKGROUND White matter injury (WMI) represents a significant etiological factor contributing to neurological impairment subsequent to Traumatic Brain Injury (TBI). CD36 receptors are recognized as pivotal participants in the pathogenesis of neurological disorders, including stroke and spinal cord injury. Furthermore, dynamic fluctuations in the phenotypic polarization of microglial cells have been intimately associated with the regenerative processes within the injured tissue following TBI. Nevertheless, there is a paucity of research addressing the impact of CD36 receptors on WMI and microglial polarization. This investigation aims to elucidate the functional role and mechanistic underpinnings of CD36 in modulating microglial polarization and WMI following TBI. METHODS TBI models were induced in murine subjects via controlled cortical impact (CCI). The spatiotemporal patterns of CD36 expression were examined through quantitative polymerase chain reaction (qPCR), Western blot analysis, and immunofluorescence staining. The extent of white matter injury was assessed via transmission electron microscopy, Luxol Fast Blue (LFB) staining, and immunofluorescence staining. Transcriptome sequencing was employed to dissect the molecular mechanisms underlying CD36 down-regulation and its influence on white matter damage. Microglial polarization status was ascertained using qPCR, Western blot analysis, and immunofluorescence staining. In vitro, a Transwell co-culture system was employed to investigate the impact of CD36-dependent microglial polarization on oligodendrocytes subjected to oxygen-glucose deprivation (OGD). RESULTS Western blot and qPCR analyses revealed that CD36 expression reached its zenith at 7 days post-TBI and remained sustained at this level thereafter. Immunofluorescence staining exhibited robust CD36 expression in astrocytes and microglia following TBI. Genetic deletion of CD36 ameliorated TBI-induced white matter injury, as evidenced by a reduced SMI-32/MBP ratio and G-ratio. Transcriptome sequencing unveiled differentially expressed genes enriched in processes linked to microglial activation, regulation of neuroinflammation, and the TNF signaling pathway. Additionally, bioinformatics analysis pinpointed the Traf5-p38 axis as a critical signaling pathway. In vivo and in vitro experiments indicated that inhibition of the CD36-Traf5-MAPK axis curtailed microglial polarization toward the pro-inflammatory phenotype. In a Transwell co-culture system, BV2 cells treated with LPS + IFN-γ exacerbated the damage of post-OGD oligodendrocytes, which could be rectified through CD36 knockdown in BV2 cells. CONCLUSIONS This study illuminates that the suppression of CD36 mitigates WMI by constraining microglial polarization towards the pro-inflammatory phenotype through the down-regulation of the Traf5-MAPK signaling pathway. Our findings present a potential therapeutic strategy for averting neuroinflammatory responses and ensuing WMI damage resulting from TBI.
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Affiliation(s)
- Xiaoxiang Hou
- Department of Neurosurgery, Changzheng Hospital, Naval Medical University, 415 Fengyang Rd, Shanghai, China
| | - Xiaolin Qu
- Department of Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, China
| | - Wen Chen
- Department of Neurosurgery, Changzheng Hospital, Naval Medical University, 415 Fengyang Rd, Shanghai, China
| | - Xianzheng Sang
- Department of Neurosurgery, Changzheng Hospital, Naval Medical University, 415 Fengyang Rd, Shanghai, China
| | - Yichao Ye
- Department of Neurosurgery, Changzheng Hospital, Naval Medical University, 415 Fengyang Rd, Shanghai, China
| | - Chengqing Wang
- Department of Neurosurgery, Changzheng Hospital, Naval Medical University, 415 Fengyang Rd, Shanghai, China
| | - Yangu Guo
- Department of Neurosurgery, Changzheng Hospital, Naval Medical University, 415 Fengyang Rd, Shanghai, China
| | - Hantong Shi
- Department of Neurosurgery, Changzheng Hospital, Naval Medical University, 415 Fengyang Rd, Shanghai, China
| | - Chengzi Yang
- Department of Neurosurgery, Changzheng Hospital, Naval Medical University, 415 Fengyang Rd, Shanghai, China
| | - Kaixin Zhu
- Department of Neurosurgery, The First Naval Hospital of Southern Theater Command, Zhanjiang, China
| | - Yelei Zhang
- Department of Neurosurgery, Xishan People's Hospital of Wuxi City, Wuxi, China
| | - Haoxiang Xu
- Department of Neurosurgery, Changzheng Hospital, Naval Medical University, 415 Fengyang Rd, Shanghai, China
| | - Liquan Lv
- Department of Neurosurgery, Changzheng Hospital, Naval Medical University, 415 Fengyang Rd, Shanghai, China
| | - Danfeng Zhang
- Department of Neurosurgery, Changzheng Hospital, Naval Medical University, 415 Fengyang Rd, Shanghai, China.
| | - Lijun Hou
- Department of Neurosurgery, Changzheng Hospital, Naval Medical University, 415 Fengyang Rd, Shanghai, China.
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Zhou Y, Feng Z, Wen J, Yang C, Jing Q. Aberrant expressions of TAM receptors are associated with postoperative recurrence in chronic rhinosinusitis with nasal polyps. Eur Arch Otorhinolaryngol 2024; 281:3005-3015. [PMID: 38233691 DOI: 10.1007/s00405-024-08450-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 01/02/2024] [Indexed: 01/19/2024]
Abstract
OBJECTIVES TAM receptors (TYRO3, AXL, and MER) play important roles in inflammatory responses, but their effects in chronic rhinosinusitis with nasal polyps (CRSwNP) remain elucidated. We aim to evaluate the values of TAM receptors in disease severity and postoperative recurrence of CRSwNP. METHODS We initially enrolled 160 patients with CRSwNP who were treated with functional endoscopic sinus surgery (FESS) and postoperative recurrence was evaluated during the follow-up period. Circulating TAM receptor levels were detected by enzyme-linked immunosorbent assay (ELISA), and tissue expressions were measured by real-time polymerase chain reaction (RT-PCR) and immunohistochemical (IHC). The relationships between TAM receptor levels and postoperative recurrence were examined. RESULTS A total of 150 patients completed the follow-up schedule, 49 patients experienced postoperative recurrence and the remaining 101 patients were non-recurrent. In recurrent CRSwNP patients, serum levels of TAM receptors were increased compared to those in non-recurrent patients and were positively correlated with disease severity scores (P < 0.05). Circulating TYRO3 and MER were identified as potential predictors of postoperative recurrence based on receiver operating characteristics (ROC) and Kaplan-Meier plots (P < 0.05). Furthermore, tissue TAM receptor levels, as determined by both RT-PCR and IHC, were enhanced in the recurrent group than in the non-recurrent group (P < 0.05) and were predictive of postoperative recurrence (P < 0.05). Interestingly, circulating TYRO3 and MER concentrations, as well as tissue TYRO3 expression, were found to be significantly increased in patients who experienced postoperative recurrence (P < 0.05). IHC images from the same patients revealed that TAM expressions were enhanced in the recurrent tissues compared to their baseline tissue levels. CONCLUSIONS Our laboratory results demonstrated that TAM receptors were increased in recurrent CRSwNP patients and associated with postoperative recurrence. Moreover, the new laboratory findings suggested that measuring circulating levels of TAM receptors might serve as a promising new approach to assess disease progression and predict the risk of postoperative recurrence.
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Affiliation(s)
- Yandan Zhou
- Changsha Aier Eye Hospital, Aier Eye Hospital Group, Changsha, Hunan, China
| | - Zhili Feng
- Department of Otolaryngology Head and Neck Surgery, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, Changsha, Hunan, China
- Institute of Otolaryngology Head and Neck Surgery, Hengyang Medical School, University of South China, Changsha, Hunan, China
| | - Jie Wen
- Department of Otolaryngology Head and Neck Surgery, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, Changsha, Hunan, China
- Institute of Otolaryngology Head and Neck Surgery, Hengyang Medical School, University of South China, Changsha, Hunan, China
| | - Chi Yang
- Department of Otolaryngology Head and Neck Surgery, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, Changsha, Hunan, China
- Institute of Otolaryngology Head and Neck Surgery, Hengyang Medical School, University of South China, Changsha, Hunan, China
| | - Qiancheng Jing
- Department of Otolaryngology Head and Neck Surgery, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, Changsha, Hunan, China.
- Institute of Otolaryngology Head and Neck Surgery, Hengyang Medical School, University of South China, Changsha, Hunan, China.
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Zhou X, Song H, He J, Han W, Li Q. Deciphering microglial activation and neuronal apoptosis post‑traumatic brain injury: The role of TYROBP in inflammation regulation networks. Mol Med Rep 2024; 29:104. [PMID: 38639190 PMCID: PMC11063751 DOI: 10.3892/mmr.2024.13228] [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: 11/30/2023] [Accepted: 02/01/2024] [Indexed: 04/20/2024] Open
Abstract
Traumatic Brain Injury (TBI) represents a significant public health challenge. Recovery from brain injury necessitates the collaborative efforts of various resident neural cells, predominantly microglia. The present study analyzed rat and mouse RNA expression micro‑arrays, high‑throughput RNA sequencing and single‑cell sequencing data sourced from public databases. To construct an inflammation regulation network around TYRO protein tyrosine kinase‑binding protein (TYROBP), to evaluate the role of TYROBP in cell death after TBI. These findings indicate that following TBI, neurons predominantly communicate with one another through the CXC chemokine ligand (CXCL) and CC chemokine ligand (CCL) signaling pathways, employing a paracrine mechanism to activate microglia. These activated microglia intensify the pathological progression of brain injury by releasing factors such as tumor necrosis factor α (TNF‑α), vascular endothelial growth factor and transforming growth factor β via the NF‑κB pathway. Cells co‑culture experiments demonstrated that neurons, impaired by mechanical injury, interact with microglia through non‑contact mechanisms. Activated microglia secrete cytokines, including TNF‑α, CXCL‑8 and CCL2, which trigger an inflammatory response and facilitate neuronal apoptosis. TYROBP gene knockout in microglia was demonstrated to reduce this interaction and reduce neuronal cell apoptosis rates.
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Affiliation(s)
- Xudong Zhou
- The First Clinical College, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250355, P.R. China
- Emergency Department, Shenzhen University General Hospital, Shenzhen University, Shenzhen, Guangdong 518060, P.R. China
| | - Huiping Song
- The First Clinical College, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250355, P.R. China
| | - Jingjing He
- The First Clinical College, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250355, P.R. China
| | - Wei Han
- Emergency Department, Shenzhen University General Hospital, Shenzhen University, Shenzhen, Guangdong 518060, P.R. China
| | - Qin Li
- The First Clinical College, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250355, P.R. China
- Emergency Department, Shenzhen University General Hospital, Shenzhen University, Shenzhen, Guangdong 518060, P.R. China
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Ye J, Fan Y, She Y, Shi J, Yang Y, Yuan X, Li R, Han J, Liu L, Kang Y, Ji X. Biomimetic Self-Propelled Asymmetric Nanomotors for Cascade-Targeted Treatment of Neurological Inflammation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2310211. [PMID: 38460166 PMCID: PMC11165487 DOI: 10.1002/advs.202310211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 02/19/2024] [Indexed: 03/11/2024]
Abstract
The precise targeted delivery of therapeutic agents to deep regions of the brain is crucial for the effective treatment of various neurological diseases. However, achieving this goal is challenging due to the presence of the blood‒brain barrier (BBB) and the complex anatomy of the brain. Here, a biomimetic self-propelled nanomotor with cascade targeting capacity is developed for the treatment of neurological inflammatory diseases. The self-propelled nanomotors are designed with biomimetic asymmetric structures with a mesoporous SiO2 head and multiple MnO2 tentacles. Macrophage membrane biomimetic modification endows nanomotors with inflammatory targeting and BBB penetration abilities The MnO2 agents catalyze the degradation of H2O2 into O2, not only by reducing brain inflammation but also by providing the driving force for deep brain penetration. Additionally, the mesoporous SiO2 head is loaded with curcumin, which actively regulates macrophage polarization from the M1 to the M2 phenotype. All in vitro cell, organoid model, and in vivo animal experiments confirmed the effectiveness of the biomimetic self-propelled nanomotors in precise targeting, deep brain penetration, anti-inflammatory, and nervous system function maintenance. Therefore, this study introduces a platform of biomimetic self-propelled nanomotors with inflammation targeting ability and active deep penetration for the treatment of neurological inflammation diseases.
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Affiliation(s)
- Jiamin Ye
- Academy of Medical Engineering and Translational MedicineMedical CollegeTianjin UniversityTianjin300072China
| | - Yueyue Fan
- Academy of Medical Engineering and Translational MedicineMedical CollegeTianjin UniversityTianjin300072China
| | - Yaoguang She
- Department of General Surgerythe First Medical CenterChinese People's Liberation Army General HospitalBeijing100853China
| | - Jiacheng Shi
- Academy of Medical Engineering and Translational MedicineMedical CollegeTianjin UniversityTianjin300072China
| | - Yiwen Yang
- Academy of Medical Engineering and Translational MedicineMedical CollegeTianjin UniversityTianjin300072China
| | - Xue Yuan
- Academy of Medical Engineering and Translational MedicineMedical CollegeTianjin UniversityTianjin300072China
| | - Ruiyan Li
- Academy of Medical Engineering and Translational MedicineMedical CollegeTianjin UniversityTianjin300072China
| | - Jingwen Han
- Academy of Medical Engineering and Translational MedicineMedical CollegeTianjin UniversityTianjin300072China
| | - Luntao Liu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear MedicineInstitute of Radiation MedicineChinese Academy of Medical Sciences and Peking Union Medical CollegeTianjin100730China
| | - Yong Kang
- Academy of Medical Engineering and Translational MedicineMedical CollegeTianjin UniversityTianjin300072China
| | - Xiaoyuan Ji
- Academy of Medical Engineering and Translational MedicineMedical CollegeTianjin UniversityTianjin300072China
- Medical CollegeLinyi UniversityLinyi276000China
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23
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Liu YX, Zhao M, Yu Y, Liu JP, Liu WJ, Yao RQ, Wang J, Yang RL, Wu Y, Dong N, Cao Y, Li SC, Zhang QH, Yan RM, Yao YM. Extracellular cold-inducible RNA-binding protein mediated neuroinflammation and neuronal apoptosis after traumatic brain injury. BURNS & TRAUMA 2024; 12:tkae004. [PMID: 38817684 PMCID: PMC11136617 DOI: 10.1093/burnst/tkae004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 01/09/2024] [Accepted: 01/25/2024] [Indexed: 06/01/2024]
Abstract
Background Extracellular cold-inducible RNA-binding protein (eCIRP) plays a vital role in the inflammatory response during cerebral ischaemia. However, the potential role and regulatory mechanism of eCIRP in traumatic brain injury (TBI) remain unclear. Here, we explored the effect of eCIRP on the development of TBI using a neural-specific CIRP knockout (KO) mouse model to determine the contribution of eCIRP to TBI-induced neuronal injury and to discover novel therapeutic targets for TBI. Methods TBI animal models were generated in mice using the fluid percussion injury method. Microglia or neuron lines were subjected to different drug interventions. Histological and functional changes were observed by immunofluorescence and neurobehavioural testing. Apoptosis was examined by a TdT-mediated dUTP nick end labelling assay in vivo or by an annexin-V assay in vitro. Ultrastructural alterations in the cells were examined via electron microscopy. Tissue acetylation alterations were identified by non-labelled quantitative acetylation via proteomics. Protein or mRNA expression in cells and tissues was determined by western blot analysis or real-time quantitative polymerase chain reaction. The levels of inflammatory cytokines and mediators in the serum and supernatants were measured via enzyme-linked immunoassay. Results There were closely positive correlations between eCIRP and inflammatory mediators, and between eCIRP and TBI markers in human and mouse serum. Neural-specific eCIRP KO decreased hemispheric volume loss and neuronal apoptosis and alleviated glial cell activation and neurological function damage after TBI. In contrast, eCIRP treatment resulted in endoplasmic reticulum disruption and ER stress (ERS)-related death of neurons and enhanced inflammatory mediators by glial cells. Mechanistically, we noted that eCIRP-induced neural apoptosis was associated with the activation of the protein kinase RNA-like ER kinase-activating transcription factor 4 (ATF4)-C/EBP homologous protein signalling pathway, and that eCIRP-induced microglial inflammation was associated with histone H3 acetylation and the α7 nicotinic acetylcholine receptor. Conclusions These results suggest that TBI obviously enhances the secretion of eCIRP, thereby resulting in neural damage and inflammation in TBI. eCIRP may be a biomarker of TBI that can mediate the apoptosis of neuronal cells through the ERS apoptotic pathway and regulate the inflammatory response of microglia via histone modification.
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Affiliation(s)
- Yu-xiao Liu
- Department of Neurosurgery, First Medical Center of the Chinese PLA General Hospital, Beijing 100853, People’s Republic of China
| | - Ming Zhao
- Department of Neurosurgery, First Medical Center of the Chinese PLA General Hospital, Beijing 100853, People’s Republic of China
| | - Yang Yu
- Department of Traditional Chinese Medical Science, Sixth Medical Center of the Chinese PLA General Hospital, Beijing 100037, People’s Republic of China
| | - Jing-peng Liu
- Department of Traditional Chinese Medical Science, Sixth Medical Center of the Chinese PLA General Hospital, Beijing 100037, People’s Republic of China
| | - Wen-jia Liu
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences, Beijing Institute of Lifeomics, Beijing 100071, People’s Republic of China
| | - Ren-qi Yao
- Translational Medicine Research Center, Medical Innovation Research Division and Fourth Medical Center of the Chinese PLA General Hospital, Beijing 100853, People’s Republic of China
| | - Jing Wang
- Department of Obstetrics and Gynecology, Seventh Medical Center of the Chinese PLA General Hospital, Beijing 100700, People’s Republic of China
| | - Rong-li Yang
- Intensive Care Unit, Dalian Municipal Central Hospital Affiliated Dalian University of Technology, Dalian 116033, People’s Republic of China
| | - Yao Wu
- Translational Medicine Research Center, Medical Innovation Research Division and Fourth Medical Center of the Chinese PLA General Hospital, Beijing 100853, People’s Republic of China
| | - Ning Dong
- Translational Medicine Research Center, Medical Innovation Research Division and Fourth Medical Center of the Chinese PLA General Hospital, Beijing 100853, People’s Republic of China
| | - Yang Cao
- Department of Neurosurgery, First Medical Center of the Chinese PLA General Hospital, Beijing 100853, People’s Republic of China
| | - Shou-chun Li
- Department of Neurosurgery, First Medical Center of the Chinese PLA General Hospital, Beijing 100853, People’s Republic of China
| | - Qin-hong Zhang
- Translational Medicine Research Center, Medical Innovation Research Division and Fourth Medical Center of the Chinese PLA General Hospital, Beijing 100853, People’s Republic of China
| | - Run-min Yan
- Department of Neurosurgery, First Medical Center of the Chinese PLA General Hospital, Beijing 100853, People’s Republic of China
| | - Yong-ming Yao
- Translational Medicine Research Center, Medical Innovation Research Division and Fourth Medical Center of the Chinese PLA General Hospital, Beijing 100853, People’s Republic of China
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24
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Chen J, Shi Z, Zhang C, Xiong K, Zhao W, Wang Y. Oroxin A alleviates early brain injury after subarachnoid hemorrhage by regulating ferroptosis and neuroinflammation. J Neuroinflammation 2024; 21:116. [PMID: 38702778 PMCID: PMC11069275 DOI: 10.1186/s12974-024-03099-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 04/10/2024] [Indexed: 05/06/2024] Open
Abstract
BACKGROUND Subarachnoid hemorrhage (SAH), a severe subtype of stroke, is characterized by notably high mortality and morbidity, largely due to the lack of effective therapeutic options. Although the neuroprotective potential of PPARg and Nrf2 has been recognized, investigative efforts into oroxin A (OA), remain limited in preclinical studies. METHODS SAH was modeled in vivo through filament perforation in male C57BL/6 mice and in vitro by exposing HT22 cells to hemin to induce neuronal damage. Following the administration of OA, a series of methods were employed to assess neurological behaviors, brain water content, neuronal damage, cell ferroptosis, and the extent of neuroinflammation. RESULTS The findings indicated that OA treatment markedly improved survival rates, enhanced neurological functions, mitigated neuronal death and brain edema, and attenuated the inflammatory response. These effects of OA were linked to the suppression of microglial activation. Moreover, OA administration was found to diminish ferroptosis in neuronal cells, a critical factor in early brain injury (EBI) following SAH. Further mechanistic investigations uncovered that OA facilitated the translocation of nuclear factor erythroid 2-related factor 2 (Nrf-2) from the cytoplasm to the nucleus, thereby activating the Nrf2/GPX4 pathway. Importantly, OA also upregulated the expression of FSP1, suggesting a significant and parallel protective effect against ferroptosis in EBI following SAH in synergy with GPX4. CONCLUSION In summary, this research indicated that the PPARg activator OA augmented the neurological results in rodent models and diminished neuronal death. This neuroprotection was achieved primarily by suppressing neuronal ferroptosis. The underlying mechanism was associated with the alleviation of cellular death through the Nrf2/GPX4 and FSP1/CoQ10 pathways.
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Affiliation(s)
- Junhui Chen
- Department of Neurosurgery, 904 th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, No. 101 Xingyuan North Road, Liangxi District, Wuxi, 214044, Jiangsu Province, China
- Department of Human Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China
| | - Zhonghua Shi
- Department of Neurosurgery, 904 th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, No. 101 Xingyuan North Road, Liangxi District, Wuxi, 214044, Jiangsu Province, China
| | - Chunlei Zhang
- Department of Neurosurgery, 904 th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, No. 101 Xingyuan North Road, Liangxi District, Wuxi, 214044, Jiangsu Province, China
| | - Kun Xiong
- Department of Human Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China.
| | - Wei Zhao
- Department of Neurosurgery, 904 th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, No. 101 Xingyuan North Road, Liangxi District, Wuxi, 214044, Jiangsu Province, China
| | - Yuhai Wang
- Department of Neurosurgery, 904 th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, No. 101 Xingyuan North Road, Liangxi District, Wuxi, 214044, Jiangsu Province, China.
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Zhang Q, Hu C, Feng J, Long H, Wang Y, Wang P, Hu C, Yue Y, Zhang C, Liu Z, Zhou X. Anti-inflammatory mechanisms of neutrophil membrane-coated nanoparticles without drug loading. J Control Release 2024; 369:12-24. [PMID: 38508526 DOI: 10.1016/j.jconrel.2024.03.030] [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: 11/17/2023] [Revised: 03/11/2024] [Accepted: 03/15/2024] [Indexed: 03/22/2024]
Abstract
Neutrophil membrane-coated nanoparticles (NM-NPs) are nanomedicines with traits of mimicking the surface properties and functions of neutrophils, which are the most abundant type of white blood cells in the human body. NM-NPs have been widely used as targeted drug delivery systems for various inflammatory diseases, but their intrinsic effects on inflammation are not fully characterized yet. This study found that NM-NPs could modulate inflammation by multiple mechanisms without drug loading. NM-NPs could inhibit the recruitment of neutrophils and macrophages to the inflamed site by capturing chemokines and blocking their adhesion to inflamed endothelial cells. After internalized by macrophages and other phagocytic cells, NM-NPs could alter their phenotype by phosphatidylserine and simultaneously degrade the sequestered and neutralized cytokines and chemokines by lysosomal degradation. Under these effects, NM-NPs exhibited significant anti-inflammatory effects on LPS-induced inflammatory liver injury in vivo without drug loading. Our study unveiled the anti-inflammatory effects and mechanisms of NM-NPs without drug loading, and provided new insights and evidence for understanding their biological effects and safety, as well as developing more effective and safe targeted drug delivery systems.
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Affiliation(s)
- Qing Zhang
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China; Department of Cardiology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province 650032, China
| | - Chengyi Hu
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| | - Jinwei Feng
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| | - Hongyan Long
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| | - Ying Wang
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| | - Pan Wang
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| | - Chenglu Hu
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| | - Yuqin Yue
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| | - Chengyuan Zhang
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China; Yunnan Key Laboratory of Stem Cell and Regenerative Medicine, Science and Technology Achievement Incubation Center, Kunming Medical University, Kunming 650500, China
| | - Zhirui Liu
- Department of Pharmacy, The First Affiliated Hospital of Army Medical University, Chongqing 400038, China.
| | - Xing Zhou
- Yunnan Key Laboratory of Stem Cell and Regenerative Medicine, Science and Technology Achievement Incubation Center, Kunming Medical University, Kunming 650500, China; Chongqing Key Laboratory of Medicinal Chemistry & Molecular Pharmacology, Chongqing University of Technology, Chongqing 400054, China.
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Li Y, Zheng H, Yao Q, Ma Y, Wang L, Liu Q, Liu Y. Preparation, structural characteristics and pharmacological activity of polysaccharides from Polygala tenuifolia: A review. Carbohydr Res 2024; 539:109117. [PMID: 38626569 DOI: 10.1016/j.carres.2024.109117] [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: 12/26/2023] [Revised: 04/07/2024] [Accepted: 04/08/2024] [Indexed: 04/18/2024]
Abstract
Polygala tenuifolia is a traditional Chinese medicine with a long history of application, with the efficacy of suppressing cough, calming asthma, tranquilizing the mind, and benefiting the intellect. It is classified as a top-quality medicine in Shennong's Classic of Materia Medica. Polysaccharide is an important active ingredient in Polygala tenuifolia, which consists of several monosaccharides, including Ara, Gal, Glc, and so on. In this review, the preparation methods, structural characteristics, and biological activities of polysaccharides from Polygala tenuifolia are summarized, and the problems in the current studies are discussed to support further research, development, and utilization.
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Affiliation(s)
- Yuanyuan Li
- School of Pharmaceutical Sciences, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Huimin Zheng
- College of Pharmacy, Qinghai Nationalities University, Xining, 810007, China
| | - Qiuhui Yao
- School of Foreign Languages, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Yongbo Ma
- Institute of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Lei Wang
- School of Pharmaceutical Sciences, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Qian Liu
- School of Pharmaceutical Sciences, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Yuhong Liu
- School of Pharmaceutical Sciences, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China.
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D’Onghia D, Colangelo D, Bellan M, Tonello S, Puricelli C, Virgilio E, Apostolo D, Minisini R, Ferreira LL, Sozzi L, Vincenzi F, Cantello R, Comi C, Pirisi M, Vecchio D, Sainaghi PP. Gas6/TAM system as potential biomarker for multiple sclerosis prognosis. Front Immunol 2024; 15:1362960. [PMID: 38745659 PMCID: PMC11091300 DOI: 10.3389/fimmu.2024.1362960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 04/03/2024] [Indexed: 05/16/2024] Open
Abstract
Introduction The protein growth arrest-specific 6 (Gas6) and its tyrosine kinase receptors Tyro-3, Axl, and Mer (TAM) are ubiquitous proteins involved in regulating inflammation and apoptotic body clearance. Multiple sclerosis (MS) is the most common inflammatory demyelinating disease of the central nervous system leading to progressive and irreversible disability if not diagnosed and treated promptly. Gas6 and TAM receptors have been associated with neuronal remyelination and stimulation of oligodendrocyte survival. However, few data are available regarding clinical correlation in MS patients. We aimed to evaluate soluble levels of these molecules in the cerebrospinal fluid (CSF) and serum at MS diagnosis and correlate them with short-term disease severity. Methods In a prospective cohort study, we enrolled 64 patients with a diagnosis of clinical isolated syndrome (CIS), radiological isolated syndrome (RIS) and relapsing-remitting (RR) MS according to the McDonald 2017 Criteria. Before any treatment initiation, we sampled the serum and CSF, and collected clinical data: disease course, presence of gadolinium-enhancing lesions, and expanded disability status score (EDSS). At the last clinical follow-up, we assessed EDSS and calculated MS severity score (MSSS) and age-related MS severity (ARMSS). Gas6 and TAM receptors were determined using an ELISA kit (R&D Systems) and compared to neurofilament (NFLs) levels evaluated with SimplePlex™ fluorescence-based immunoassay. Results At diagnosis, serum sAxl was higher in patients receiving none or low-efficacy disease-modifying treatments (DMTs) versus patients with high-efficacy DMTs (p = 0.04). Higher CSF Gas6 and serum sAXL were associated with an EDSS <3 at diagnosis (p = 0.04; p = 0.037). Serum Gas6 correlates to a lower MSSS (r2 = -0.32, p = 0.01). Serum and CSF NFLs were confirmed as disability biomarkers in our cohort according to EDSS (p = 0.005; p = 0.002) and MSSS (r2 = 0.27, p = 0.03; r2 = 0.39, p = 0.001). Results were corroborated using multivariate analysis. Conclusions Our data suggest a protective role of Gas6 and its receptors in patients with MS and suitable severity disease biomarkers.
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Affiliation(s)
- Davide D’Onghia
- Department of Translational Medicine, University of Piemonte Orientale (UPO), Novara, Italy
- Center for Autoimmune and Allergic Diseases (CAAD), University of Piemonte Orientale (UPO), Novara, Italy
| | - Donato Colangelo
- Department of Health Sciences, Pharmacology, University of Piemonte Orientale (UPO), Novara, Italy
- Department of Health Sciences, Interdisciplinary Research Center of Autoimmune Diseases (IRCAD), University of Piemonte Orientale (UPO), Novara, Italy
| | - Mattia Bellan
- Department of Translational Medicine, University of Piemonte Orientale (UPO), Novara, Italy
- Center for Autoimmune and Allergic Diseases (CAAD), University of Piemonte Orientale (UPO), Novara, Italy
- Internal Medicine and Rheumatology Unit, Azienda Ospedaliera Universitaria (AOU) “Maggiore della Carita”, Novara, Italy
| | - Stelvio Tonello
- Department of Translational Medicine, University of Piemonte Orientale (UPO), Novara, Italy
- Center for Autoimmune and Allergic Diseases (CAAD), University of Piemonte Orientale (UPO), Novara, Italy
| | - Chiara Puricelli
- Department of Health Sciences, Clinical Biochemistry, University of Piemonte Orientale (UPO), Novara, Italy
| | - Eleonora Virgilio
- Department of Translational Medicine, Neurology Unit, Maggiore Della Carità Hospital, University of Piemonte Orientale, Novara, Italy
| | - Daria Apostolo
- Department of Translational Medicine, University of Piemonte Orientale (UPO), Novara, Italy
| | - Rosalba Minisini
- Department of Translational Medicine, University of Piemonte Orientale (UPO), Novara, Italy
| | - Luciana L. Ferreira
- Department of Translational Medicine, University of Piemonte Orientale (UPO), Novara, Italy
| | - Leonardo Sozzi
- Department of Translational Medicine, University of Piemonte Orientale (UPO), Novara, Italy
| | - Federica Vincenzi
- Department of Translational Medicine, University of Piemonte Orientale (UPO), Novara, Italy
| | - Roberto Cantello
- Department of Translational Medicine, Neurology Unit, Maggiore Della Carità Hospital, University of Piemonte Orientale, Novara, Italy
| | - Cristoforo Comi
- Department of Translational Medicine, Neurology Unit, S. Andrea Hospital, University of Piemonte Orientale (UPO), Vercelli, Italy
| | - Mario Pirisi
- Department of Translational Medicine, University of Piemonte Orientale (UPO), Novara, Italy
- Center for Autoimmune and Allergic Diseases (CAAD), University of Piemonte Orientale (UPO), Novara, Italy
- Internal Medicine and Rheumatology Unit, Azienda Ospedaliera Universitaria (AOU) “Maggiore della Carita”, Novara, Italy
| | - Domizia Vecchio
- Department of Health Sciences, Interdisciplinary Research Center of Autoimmune Diseases (IRCAD), University of Piemonte Orientale (UPO), Novara, Italy
- Department of Translational Medicine, Neurology Unit, Maggiore Della Carità Hospital, University of Piemonte Orientale, Novara, Italy
| | - Pier Paolo Sainaghi
- Department of Translational Medicine, University of Piemonte Orientale (UPO), Novara, Italy
- Center for Autoimmune and Allergic Diseases (CAAD), University of Piemonte Orientale (UPO), Novara, Italy
- Department of Health Sciences, Interdisciplinary Research Center of Autoimmune Diseases (IRCAD), University of Piemonte Orientale (UPO), Novara, Italy
- Internal Medicine and Rheumatology Unit, Azienda Ospedaliera Universitaria (AOU) “Maggiore della Carita”, Novara, Italy
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Wang J, Zhu X, Wu Y. Mer activation ameliorates nerve injury-induced neuropathic pain by regulating microglial polarization and neuroinflammation via SOCS3 in male rats. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024:10.1007/s00210-024-03070-2. [PMID: 38639897 DOI: 10.1007/s00210-024-03070-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 03/24/2024] [Indexed: 04/20/2024]
Abstract
Accumulating evidence has demonstrated that M1 microglial polarization and neuroinflammation worsen the development of neuropathic pain. However, the mechanisms underlying microglial activation during neuropathic pain remain incompletely understood. Myeloid-epithelial-reproductive tyrosine kinase (Mer), which is a member of the Tyro-Axl-Mer (TAM) family of receptor tyrosine kinases, plays a crucial role in the regulation of microglial polarization. However, the effect of Mer on microglial polarization during neuropathic pain has not been determined. In this study, western blotting, immunofluorescence analysis, quantitative polymerase chain reaction (qPCR), and enzyme-linked immunosorbent assay (ELISA) were used to examine the role of Mer in pain hypersensitivity and microglial polarization in rats with chronic constriction injury (CCI) of the sciatic nerve. The results indicated that Mer expression in microglia was prominently increased in the spinal cords of rats subjected to CCI. Furthermore, treatment with recombinant protein S (PS, an activator of Mer) alleviated mechanical allodynia and thermal hyperalgesia, promoted the switch in microglia from the M1 phenotype to the M2 phenotype, and ameliorated neuroinflammation in rats subjected to CCI. However, the use of suppressor of cytokine signalling 3 (SOCS3) siRNA abolished these changes. These results indicated that Mer regulated M1/M2 microglial polarization and neuroinflammation and may be a potential target for treating neuropathic pain.
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Affiliation(s)
- Jingqiong Wang
- Health Science Center, Yangtze University, JingZhou, Hubei province, China
- HuangGang Central hospital of Yangtze University, HuangGang, Hubei province, China
| | - Xuanzhi Zhu
- HuangGang Central hospital of Yangtze University, HuangGang, Hubei province, China
| | - Yaohua Wu
- HuangGang Central hospital of Yangtze University, HuangGang, Hubei province, China.
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Tang L, Xie D, Wang S, Gao C, Pan S. Piezo1 Knockout Improves Post-Stroke Cognitive Dysfunction by Inhibiting the Interleukin-6 (IL-6)/Glutathione Peroxidase 4 (GPX4) Pathway. J Inflamm Res 2024; 17:2257-2270. [PMID: 38633449 PMCID: PMC11022880 DOI: 10.2147/jir.s448903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 03/19/2024] [Indexed: 04/19/2024] Open
Abstract
Background Cerebral infarction often results in post-stroke cognitive impairment, which impairs the quality of life and causes long-term disability. Astrocytes, the most abundant glial cells in the central nervous system, have a crucial role in cerebral ischemia and neuroinflammation. We explored the possible advantages of interleukin-6 (IL-6), a powerful pro-inflammatory cytokine produced by astrocytes, for post-stroke cognitive function. Methods Mendelian randomization was applied to analyze the GWAS database of stroke patients, obtaining a causal relationship between IL-6 and stroke. Further validation of this relationship and its mechanisms was conducted. Using a mouse model of cerebral infarction, we demonstrated a significant increase in IL-6 expression in astrocytes surrounding the ischemic lesion. This protective effect of Piezo1 knockout was attributed to the downregulation of matrix metalloproteinases and upregulation of tight junction proteins, such as occludin and zonula occludens-1 (ZO-1). Results Two-step Mendelian randomization revealed that IL-6 exposure is a risk factor for stroke. Moreover, we conducted behavioral assessments and observed that Piezo1 knockout mice that received intranasal administration of astrocyte-derived IL-6 showed notable improvement in cognitive function compared to control mice. This enhancement was associated with reduced neuronal cell death and suppressed astrocyte activation, preserving ZO-1. Conclusion Our study shows that astrocyte-derived IL-6 causes cognitive decline after stroke by protecting the blood-brain barrier. This suggests that piezo1 knockout may reduce cognitive impairment after brain ischemia. Further research on the mechanisms and IL-6 delivery methods may lead to new therapies for post-stroke cognition.
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Affiliation(s)
- Lujia Tang
- Department of Emergency, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, People’s Republic of China
| | - Di Xie
- Department of Emergency, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, People’s Republic of China
| | - Shangyuan Wang
- Department of Emergency, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, People’s Republic of China
| | - Chengjin Gao
- Department of Emergency, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, People’s Republic of China
| | - Shuming Pan
- Department of Emergency, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, People’s Republic of China
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Zhang Z, Liu D, Lv R, Zhao H, Li T, Huang Y, Tian Z, Gao X, Luo P, Li X. FBL Promotes LPS-Induced Neuroinflammation by Activating the NF-κB Signaling Pathway. J Inflamm Res 2024; 17:2217-2231. [PMID: 38623466 PMCID: PMC11018134 DOI: 10.2147/jir.s451049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 04/02/2024] [Indexed: 04/17/2024] Open
Abstract
Purpose Neuroinflammation occurs in response to central nervous system (CNS) injury, infection, stimulation by toxins, or autoimmunity. We previously analyzed the downstream molecular changes in HT22 cells (mouse hippocampal neurons) upon lipopolysaccharide (LPS) stimulation. We detected elevated expression of Fibrillarin (FBL), a nucleolar methyltransferase, but the associated proinflammatory mechanism was not systematically elucidated. The aim of this study was to investigate the underlying mechanisms by which FBL affects neuroinflammation. Methods RT-real-time PCR, Western blotting and immunofluorescence were used to assess the mRNA and protein expression of FBL in HT22 cells stimulated with LPS, as well as the cellular localization and fluorescence intensity of FBL. BAY-293 (a son of sevenless homolog 1 (SOS1) inhibitor), SR11302 (an activator protein-1 (AP-1) inhibitor) and KRA-533 (a KRAS agonist) were used to determine the molecular mechanisms underlying the effect of FBL. AP-1 was predicted to be the target protein of FBL by molecular docking analysis, and validation was performed with T-5224 (an AP-1 inhibitor). In addition, the downstream signaling pathways of FBL were identified by transcriptome sequencing and verified by RT-real-time PCR. Results LPS induced FBL mRNA and protein expression in HT22 cells. In-depth mechanistic studies revealed that when we inhibited c-Fos, AP-1, and SOS1, FBL expression decreased, whereas FBL expression increased when KRAS agonists were used. In addition, the transcript levels of inflammatory genes in the NF-kB signaling pathway (including CD14, MYD88, TNF, TRADD, and NFKB1) were elevated after the overexpression of FBL. Conclusion LPS induced the expression of FBL in HT22 cells through the RAS/MAPK signaling pathway, and FBL further activated the NF-kB signaling pathway, which promoted the expression of relevant inflammatory genes and the release of cytokines. The present study reveals the mechanism by which FBL promotes neuroinflammation and offers a potential target for the treatment of neuroinflammation.
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Affiliation(s)
- Zhuoyuan Zhang
- Biochemistry and Molecular Biology, College of Life Science, Northwest University, Xi’an, 710127, People’s Republic of China
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi’an, 710032, People’s Republic of China
| | - Dan Liu
- Biochemistry and Molecular Biology, College of Life Science, Northwest University, Xi’an, 710127, People’s Republic of China
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi’an, 710032, People’s Republic of China
| | - Rui Lv
- Biochemistry and Molecular Biology, College of Life Science, Northwest University, Xi’an, 710127, People’s Republic of China
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi’an, 710032, People’s Republic of China
| | - Haoyan Zhao
- Biochemistry and Molecular Biology, College of Life Science, Northwest University, Xi’an, 710127, People’s Republic of China
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi’an, 710032, People’s Republic of China
| | - Tianjing Li
- Biochemistry and Molecular Biology, College of Life Science, Northwest University, Xi’an, 710127, People’s Republic of China
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi’an, 710032, People’s Republic of China
| | - Yutao Huang
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi’an, 710032, People’s Republic of China
| | - Zhicheng Tian
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi’an, 710032, People’s Republic of China
| | - Xiangyu Gao
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi’an, 710032, People’s Republic of China
| | - Peng Luo
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi’an, 710032, People’s Republic of China
| | - Xin Li
- Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, Xi’an, 710032, People’s Republic of China
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Lin J, Sun Y, Xia B, Wang Y, Xie C, Wang J, Hu J, Zhu L. Mertk Reduces Blood-Spinal Cord Barrier Permeability Through the Rhoa/Rock1/P-MLC Pathway After Spinal Cord Injury. Neurosci Bull 2024:10.1007/s12264-024-01199-x. [PMID: 38592581 DOI: 10.1007/s12264-024-01199-x] [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: 09/23/2023] [Accepted: 12/22/2023] [Indexed: 04/10/2024] Open
Abstract
Disruption of the blood-spinal cord barrier (BSCB) is a critical event in the secondary injury following spinal cord injury (SCI). Mertk has been reported to play an important role in regulating inflammation and cytoskeletal dynamics. However, the specific involvement of Mertk in BSCB remains elusive. Here, we demonstrated a distinct role of Mertk in the repair of BSCB. Mertk expression is decreased in endothelial cells following SCI. Overexpression of Mertk upregulated tight junction proteins (TJs), reducing BSCB permeability and subsequently inhibiting inflammation and apoptosis. Ultimately, this led to enhanced neural regeneration and functional recovery. Further experiments revealed that the RhoA/Rock1/P-MLC pathway plays a key role in the effects of Mertk. These findings highlight the role of Mertk in promoting SCI recovery through its ability to mitigate BSCB permeability and may provide potential targets for SCI repair.
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Affiliation(s)
- Jiezhao Lin
- Department of Spinal Surgery, Orthopedic Medical Center, Zhujiang Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Yuanfang Sun
- Department of Spinal Surgery, Orthopedic Medical Center, Zhujiang Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Bin Xia
- Department of Orthopedics, Chengdu Seventh People's Hospital (Affiliated Cancer Hospital of Chengdu Medical College), Chengdu, 610299, China
| | - Yihan Wang
- Department of Spinal Surgery, Orthopedic Medical Center, Zhujiang Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Changnan Xie
- Department of Spinal Surgery, Orthopedic Medical Center, Zhujiang Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Jinfeng Wang
- Department of Spinal Surgery, Orthopedic Medical Center, Zhujiang Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Jinwei Hu
- Department of Spinal Surgery, Orthopedic Medical Center, Zhujiang Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Lixin Zhu
- Department of Spinal Surgery, Orthopedic Medical Center, Zhujiang Hospital, Southern Medical University, Guangzhou, 510280, China.
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Liu S, Wu J, Yang D, Xu J, Shi H, Xue B, Ding Z. Big data analytics for MerTK genomics reveals its double-edged sword functions in human diseases. Redox Biol 2024; 70:103061. [PMID: 38341954 PMCID: PMC10869259 DOI: 10.1016/j.redox.2024.103061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 01/18/2024] [Accepted: 01/24/2024] [Indexed: 02/13/2024] Open
Abstract
RATIONALE MER proto-oncogene tyrosine kinase (MerTK) is a key receptor for the clearance of apoptotic cells (efferocytosis) and plays important roles in redox-related human diseases. We will explore MerTK biology in human cells, tissues, and diseases based on big data analytics. METHODS The human RNA-seq and scRNA-seq data about 42,700 samples were from NCBI Gene Expression Omnibus and analyzed by QIAGEN Ingenuity Pathway Analysis (IPA) with about 170,000 crossover analysis. MerTK expression was quantified as Log2 (FPKM + 0.1). RESULTS We found that, in human cells, MerTK is highly expressed in macrophages, monocytes, progenitor cells, alpha-beta T cells, plasma B cells, myeloid cells, and endothelial cells (ECs). In human tissues, MerTK has higher expression in plaque, blood vessels, heart, liver, sensory system, artificial tissue, bone, adrenal gland, central nervous system (CNS), and connective tissue. Compared to normal conditions, MerTK expression in related tissues is altered in many human diseases, including cardiovascular diseases, cancer, and brain disorders. Interestingly, MerTK expression also shows sex differences in many tissues, indicating that MerTK may have different impact on male and female. Finally, based on our proteomics from primary human aortic ECs, we validated the functions of MerTK in several human diseases, such as cancer, aging, kidney failure and heart failure. CONCLUSIONS Our big data analytics suggest that MerTK may be a promising therapeutic target, but how it should be modulated depends on the disease types and sex differences. For example, MerTK inhibition emerges as a new strategy for cancer therapy due to it counteracts effect on anti-tumor immunity, while MerTK restoration represents a promising treatment for atherosclerosis and myocardial infarction as MerTK is cleaved in these disease conditions.
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Affiliation(s)
- Shijie Liu
- Department of Biology, Georgia State University, Atlanta, GA, 30303, USA
| | - Jinzi Wu
- Department of Biology, Georgia State University, Atlanta, GA, 30303, USA
| | - Daixuan Yang
- Department of Biology, Georgia State University, Atlanta, GA, 30303, USA
| | - Jianliang Xu
- Department of Biology, Georgia State University, Atlanta, GA, 30303, USA
| | - Hang Shi
- Department of Biology, Georgia State University, Atlanta, GA, 30303, USA
| | - Bingzhong Xue
- Department of Biology, Georgia State University, Atlanta, GA, 30303, USA
| | - Zufeng Ding
- Department of Biology, Georgia State University, Atlanta, GA, 30303, USA.
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33
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Chen Z, Zhang J, Pan Y, Hao Z, Li S. Extracellular vesicles as carriers for noncoding RNA-based regulation of macrophage/microglia polarization: an emerging candidate regulator for lung and traumatic brain injuries. Front Immunol 2024; 15:1343364. [PMID: 38558799 PMCID: PMC10978530 DOI: 10.3389/fimmu.2024.1343364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 02/22/2024] [Indexed: 04/04/2024] Open
Abstract
Macrophage/microglia function as immune defense and homeostatic cells that originate from bone marrow progenitor cells. Macrophage/microglia activation is historically divided into proinflammatory M1 or anti-inflammatory M2 states based on intracellular dynamics and protein production. The polarization of macrophages/microglia involves a pivotal impact in modulating the development of inflammatory disorders, namely lung and traumatic brain injuries. Recent evidence indicates shared signaling pathways in lung and traumatic brain injuries, regulated through non-coding RNAs (ncRNAs) loaded into extracellular vesicles (EVs). This packaging protects ncRNAs from degradation. These vesicles are subcellular components released through a paracellular mechanism, constituting a group of nanoparticles that involve exosomes, microvesicles, and apoptotic bodies. EVs are characterized by a double-layered membrane and are abound with proteins, nucleic acids, and other bioactive compounds. ncRNAs are RNA molecules with functional roles, despite their absence of coding capacity. They actively participate in the regulation of mRNA expression and function through various mechanisms. Recent studies pointed out that selective packaging of ncRNAs into EVs plays a role in modulating distinct facets of macrophage/microglia polarization, under conditions of lung and traumatic brain injuries. This study will explore the latest findings regarding the role of EVs in the progression of lung and traumatic brain injuries, with a specific focus on the involvement of ncRNAs within these vesicles. The conclusion of this review will emphasize the clinical opportunities presented by EV-ncRNAs, underscoring their potential functions as both biomarkers and targets for therapeutic interventions.
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Affiliation(s)
- Zhihong Chen
- Department of Respiratory Medicine, The Third People’s Hospital of Longgang District, Shenzhen, China
| | - Jingang Zhang
- Department of Orthopedic, The Third People’s Hospital of Longgang District, Shenzhen, China
| | - Yongli Pan
- Department of Neurology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, China
| | - Zhongnan Hao
- Department of Neurology, University Medical Center of Göttingen, Georg-August-University of Göttingen, Göttingen, Lower Saxony, Germany
| | - Shuang Li
- Department of Respiratory Medicine, The Third People’s Hospital of Longgang District, Shenzhen, China
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Jiang W, Liu X, Chen Y, Liu M, Yuan J, Nie M, Fan Y, Wu D, Qian Y, Sha Z, Dong S, Wu C, Liu T, Huang J, Zhang J, Gao C, Jiang R. CD4 + CD11b + T cells infiltrate and aggravate the traumatic brain injury depending on brain-to-cervical lymph node signaling. CNS Neurosci Ther 2024; 30:e14673. [PMID: 38468459 PMCID: PMC10928342 DOI: 10.1111/cns.14673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 12/28/2023] [Accepted: 02/16/2024] [Indexed: 03/13/2024] Open
Abstract
AIM We aim to identify the specific CD4+ T-cell subtype influenced by brain-to-CLN signaling and explore their role during the acute phase of traumatic brain injury (TBI). METHOD Cervical lymphadenectomy or cervical afferent lymphatic ligation was performed before TBI. Cytokine array and western blot were used to detect cytokines, while the motor function was assessed using mNss and rotarod test. CD4+ T-cell subtypes in blood, brain, and CLNs were analyzed with Cytometry by time-of-flight analysis (CyTOF) or fluorescence-activated cell sorting (FACS). Brain edema and volume changes were measured by 9.4T MRI. Neuronal apoptosis was evaluated by terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) staining. RESULTS Cervical lymphadenectomy and ligation of cervical lymphatic vessels resulted in a decreased infiltration of CD4+ T cells, specifically CD11b-positive CD4+ T cells, within the affected region. The population of CD4+ CD11b+ T cells increased in ligated CLNs, accompanied by a decrease in the average fluorescence intensity of sphingosine-1-phosphate receptor-1 (S1PR1) on these cells. Administration of CD4+ CD11b+ T cells sorted from CLNs into the lateral ventricle reversed the attenuated neurologic deficits, brain edema, and lesion volume following cervical lymphadenectomy. CONCLUSION The infiltration of CD4+ CD11b+ T cells exacerbates secondary brain damage in TBI, and this process is modulated by brain-to-CLN signaling.
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Affiliation(s)
- Weiwei Jiang
- Department of NeurosurgeryGeneral Hospital of Tianjin Medical UniversityTianjinChina
- State Key Laboratory of Experimental HematologyTianjinChina
- Tianjin Neurological Institute, Key Laboratory of Post‐Neuroinjury Neurorepair and Regeneration in Central Nervous SystemTianjin Medical University General Hospital, Ministry of EducationTianjinChina
| | - Xuanhui Liu
- Department of NeurosurgeryGeneral Hospital of Tianjin Medical UniversityTianjinChina
- State Key Laboratory of Experimental HematologyTianjinChina
- Tianjin Neurological Institute, Key Laboratory of Post‐Neuroinjury Neurorepair and Regeneration in Central Nervous SystemTianjin Medical University General Hospital, Ministry of EducationTianjinChina
| | - Yupeng Chen
- Department of NeurosurgeryGeneral Hospital of Tianjin Medical UniversityTianjinChina
- State Key Laboratory of Experimental HematologyTianjinChina
- Tianjin Neurological Institute, Key Laboratory of Post‐Neuroinjury Neurorepair and Regeneration in Central Nervous SystemTianjin Medical University General Hospital, Ministry of EducationTianjinChina
| | - Mingqi Liu
- Department of NeurosurgeryGeneral Hospital of Tianjin Medical UniversityTianjinChina
- State Key Laboratory of Experimental HematologyTianjinChina
- Tianjin Neurological Institute, Key Laboratory of Post‐Neuroinjury Neurorepair and Regeneration in Central Nervous SystemTianjin Medical University General Hospital, Ministry of EducationTianjinChina
| | - Jiangyuan Yuan
- Department of NeurosurgeryGeneral Hospital of Tianjin Medical UniversityTianjinChina
- State Key Laboratory of Experimental HematologyTianjinChina
- Tianjin Neurological Institute, Key Laboratory of Post‐Neuroinjury Neurorepair and Regeneration in Central Nervous SystemTianjin Medical University General Hospital, Ministry of EducationTianjinChina
| | - Meng Nie
- Department of NeurosurgeryGeneral Hospital of Tianjin Medical UniversityTianjinChina
- State Key Laboratory of Experimental HematologyTianjinChina
- Tianjin Neurological Institute, Key Laboratory of Post‐Neuroinjury Neurorepair and Regeneration in Central Nervous SystemTianjin Medical University General Hospital, Ministry of EducationTianjinChina
| | - Yibing Fan
- Department of NeurosurgeryTianjin First Central HospitalTianjinChina
| | - Di Wu
- Department of NeurosurgeryGeneral Hospital of Tianjin Medical UniversityTianjinChina
- State Key Laboratory of Experimental HematologyTianjinChina
- Tianjin Neurological Institute, Key Laboratory of Post‐Neuroinjury Neurorepair and Regeneration in Central Nervous SystemTianjin Medical University General Hospital, Ministry of EducationTianjinChina
| | - Yu Qian
- Department of NeurosurgeryGeneral Hospital of Tianjin Medical UniversityTianjinChina
- State Key Laboratory of Experimental HematologyTianjinChina
- Tianjin Neurological Institute, Key Laboratory of Post‐Neuroinjury Neurorepair and Regeneration in Central Nervous SystemTianjin Medical University General Hospital, Ministry of EducationTianjinChina
| | - Zhuang Sha
- Department of NeurosurgeryGeneral Hospital of Tianjin Medical UniversityTianjinChina
- State Key Laboratory of Experimental HematologyTianjinChina
- Tianjin Neurological Institute, Key Laboratory of Post‐Neuroinjury Neurorepair and Regeneration in Central Nervous SystemTianjin Medical University General Hospital, Ministry of EducationTianjinChina
| | - Shiying Dong
- Department of NeurosurgeryGeneral Hospital of Tianjin Medical UniversityTianjinChina
- State Key Laboratory of Experimental HematologyTianjinChina
- Tianjin Neurological Institute, Key Laboratory of Post‐Neuroinjury Neurorepair and Regeneration in Central Nervous SystemTianjin Medical University General Hospital, Ministry of EducationTianjinChina
| | - Chenrui Wu
- Department of NeurosurgeryGeneral Hospital of Tianjin Medical UniversityTianjinChina
- State Key Laboratory of Experimental HematologyTianjinChina
- Tianjin Neurological Institute, Key Laboratory of Post‐Neuroinjury Neurorepair and Regeneration in Central Nervous SystemTianjin Medical University General Hospital, Ministry of EducationTianjinChina
| | - Tao Liu
- Department of NeurosurgeryGeneral Hospital of Tianjin Medical UniversityTianjinChina
- State Key Laboratory of Experimental HematologyTianjinChina
- Tianjin Neurological Institute, Key Laboratory of Post‐Neuroinjury Neurorepair and Regeneration in Central Nervous SystemTianjin Medical University General Hospital, Ministry of EducationTianjinChina
| | - Jinhao Huang
- Department of NeurosurgeryGeneral Hospital of Tianjin Medical UniversityTianjinChina
- State Key Laboratory of Experimental HematologyTianjinChina
- Tianjin Neurological Institute, Key Laboratory of Post‐Neuroinjury Neurorepair and Regeneration in Central Nervous SystemTianjin Medical University General Hospital, Ministry of EducationTianjinChina
| | - Jianning Zhang
- Department of NeurosurgeryGeneral Hospital of Tianjin Medical UniversityTianjinChina
- State Key Laboratory of Experimental HematologyTianjinChina
- Tianjin Neurological Institute, Key Laboratory of Post‐Neuroinjury Neurorepair and Regeneration in Central Nervous SystemTianjin Medical University General Hospital, Ministry of EducationTianjinChina
| | - Chuang Gao
- Department of NeurosurgeryGeneral Hospital of Tianjin Medical UniversityTianjinChina
- State Key Laboratory of Experimental HematologyTianjinChina
- Tianjin Neurological Institute, Key Laboratory of Post‐Neuroinjury Neurorepair and Regeneration in Central Nervous SystemTianjin Medical University General Hospital, Ministry of EducationTianjinChina
| | - Rongcai Jiang
- Department of NeurosurgeryGeneral Hospital of Tianjin Medical UniversityTianjinChina
- State Key Laboratory of Experimental HematologyTianjinChina
- Tianjin Neurological Institute, Key Laboratory of Post‐Neuroinjury Neurorepair and Regeneration in Central Nervous SystemTianjin Medical University General Hospital, Ministry of EducationTianjinChina
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Wang Y, Xiong Z, Qiao Y, Zhang Q, Zhou G, Zhou C, Ma X, Jiang X, Yu W. Acetyl-11-keto-beta-boswellic acid modulates macrophage polarization and Schwann cell migration to accelerate spinal cord injury repair in rats. CNS Neurosci Ther 2024; 30:e14642. [PMID: 38430464 PMCID: PMC10908365 DOI: 10.1111/cns.14642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 01/12/2024] [Accepted: 01/28/2024] [Indexed: 03/03/2024] Open
Abstract
BACKGROUND Inhibiting secondary inflammatory damage caused by glial cells and creating a stable microenvironment is one of the main strategies to investigate drugs for the treatment of spinal cord injury. Acetyl-11-keto-beta-boswellic acid (AKBA) is the active component of the natural drug boswellia, which has anti-inflammatory and antioxidant effects and offers a possible therapeutic option for spinal cord injury. METHODS In this study, a spinal cord injury model was established by crushing spinal cord, respectively, to detect the M1 macrophage inflammatory markers: iNOS, TNF-α, IL-1β, and the M2 macrophage markers CD206, ARG-1, IL-10, and the detection of antioxidant enzymes and MDA. In vitro, macrophages were cultured to verify the main mechanism of the macrophage switch from Nrf2/HO-1 to M2 type by flow cytometry, immunofluorescence, and other techniques. Macrophage and Schwann cell co-culture validated the migration mechanism of Schwann cells promoted by AKBA. RESULTS AKBA significantly enhanced the antioxidant enzyme activities of CAT, GSH-Px, T-AOC, and SOD, reduced MDA content, and reduced oxidative damage caused by spinal cord injury via the Nrf2/HO-1 signaling pathway; AKBA mediates Nrf2/HO-1/IL-10, converts macrophages from M1 to M2 type, reduces inflammation, and promotes Schwann cell migration, thereby accelerating the repair of spinal cord injury in rats. CONCLUSIONS Our work demonstrates that AKBA can attenuate oxidative stress as well as the secondary inflammatory injury caused by macrophages after SCI, promote Schwann cell migration to the injury site, and thus accelerate the repair of the injured spinal cord.
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Affiliation(s)
- Yao Wang
- Department of Veterinary MedicineNortheast Agricultural UniversityHarbinHeilongjiangChina
| | - Zongliang Xiong
- Department of Veterinary MedicineNortheast Agricultural UniversityHarbinHeilongjiangChina
| | - Yuncong Qiao
- School of Life SciencesNortheast Agricultural UniversityHarbinHeilongjiangChina
| | - Qiyuan Zhang
- Department of Veterinary MedicineNortheast Agricultural UniversityHarbinHeilongjiangChina
| | - Guanghu Zhou
- Department of Veterinary MedicineNortheast Agricultural UniversityHarbinHeilongjiangChina
| | - Chong Zhou
- Department of Veterinary MedicineNortheast Agricultural UniversityHarbinHeilongjiangChina
| | - Xianglin Ma
- Department of Veterinary MedicineNortheast Agricultural UniversityHarbinHeilongjiangChina
| | - Xiaowen Jiang
- Department of Veterinary MedicineNortheast Agricultural UniversityHarbinHeilongjiangChina
| | - Wenhui Yu
- Department of Veterinary MedicineNortheast Agricultural UniversityHarbinHeilongjiangChina
- Key Laboratory of the Provincial Education, Department of Heilongjiang for Common Animal Disease Prevention and TreatmentNortheast Agricultural UniversityHarbinHeilongjiangChina
- Institute of Chinese Veterinary MedicineNortheast Agricultural UniversityHarbinHeilongjiangChina
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Zhang J, Gu Y, Sun W, Yu L, Li T. Tetrahydrocurcumin Protects Against GSK3β/PTEN/PI3K/Akt-Mediated Neuroinflammatory Responses and Microglial Polarization Following Traumatic Brain Injury. Mol Neurobiol 2024:10.1007/s12035-024-04034-6. [PMID: 38368289 DOI: 10.1007/s12035-024-04034-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 02/11/2024] [Indexed: 02/19/2024]
Abstract
Tetrahydrocurcumin (THC) and microglial polarization play crucial roles in neuroprotection during traumatic brain injury (TBI). However, whether THC regulates microglial polarization in TBI is unknown. Thus, we intended to analyze the functions and mechanism of THC in nerve injury after TBI via the regulation of microglial polarization. A TBI rat model was established, and modified neurological function score (mNSS), brain water content, Nissl staining, and Fluoro-Jade B (FJB) staining were used to evaluate neurological function. The expression of the M1-linked markers CD16 and CD86, as well as the M2-associated markers CD206 and YM-1, was analyzed via qRT-PCR, western blotting, and immunofluorescence. The levels of inflammatory cytokines were assessed via ELISA. Primary microglia were isolated from the brain and treated with lipopolysaccharide (LPS) to induce injury. TUNEL staining was used to measure primary microglial apoptosis. The expression of GSK3β, PTEN, and PI3K/Akt pathway proteins was detected via western blotting. TBI induced nerve injury, while THC improved neurological function recovery after TBI. Further analysis indicated that THC enhanced M2 microglial polarization and attenuated the inflammatory reaction mediated by microglia both in vitro and in vivo. Moreover, we found that THC promoted the M2 microglial phenotype through upregulating GSK3β expression. Additionally, we proved that GSK3β activated the PI3K/Akt pathway by phosphorylating PTEN. In conclusion, we demonstrated that THC protected against nerve injury after TBI via microglial polarization via the GSK3B/PTEN/PI3K/Akt signaling axis, suggesting the potential of THC for TBI treatment by promoting microglial M2 polarization.
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Affiliation(s)
- Jie Zhang
- School of Biology and Food Engineering, Changshu Institute of Technology, Suzhou, 215500, People's Republic of China
| | - Yue Gu
- Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Institute of Clinical Pharmacology, Anhui Medical University, Hefei, 230032, People's Republic of China
| | - Wenxue Sun
- Jining First People's Hospital, Jining Medical University, Jining, 272000, People's Republic of China
| | - Lisha Yu
- School of Biology and Food Engineering, Changshu Institute of Technology, Suzhou, 215500, People's Republic of China
| | - Tushuai Li
- Wuxi School of Medicine, Jiangnan University, No. 1800 Lihu Avenue, Wuxi, 214122, People's Republic of China.
- Wuxi Translational Medicine Research Center and Jiangsu Translational Medicine Research Institute Wuxi Branch, Wuxi, 214013, People's Republic of China.
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Mahmoudi N, Mohamed E, Dehnavi SS, Aguilar LMC, Harvey AR, Parish CL, Williams RJ, Nisbet DR. Calming the Nerves via the Immune Instructive Physiochemical Properties of Self-Assembling Peptide Hydrogels. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2303707. [PMID: 38030559 PMCID: PMC10837390 DOI: 10.1002/advs.202303707] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 10/22/2023] [Indexed: 12/01/2023]
Abstract
Current therapies for the devastating damage caused by traumatic brain injuries (TBI) are limited. This is in part due to poor drug efficacy to modulate neuroinflammation, angiogenesis and/or promoting neuroprotection and is the combined result of challenges in getting drugs across the blood brain barrier, in a targeted approach. The negative impact of the injured extracellular matrix (ECM) has been identified as a factor in restricting post-injury plasticity of residual neurons and is shown to reduce the functional integration of grafted cells. Therefore, new strategies are needed to manipulate the extracellular environment at the subacute phase to enhance brain regeneration. In this review, potential strategies are to be discussed for the treatment of TBI by using self-assembling peptide (SAP) hydrogels, fabricated via the rational design of supramolecular peptide scaffolds, as an artificial ECM which under the appropriate conditions yields a supramolecular hydrogel. Sequence selection of the peptides allows the tuning of these hydrogels' physical and biochemical properties such as charge, hydrophobicity, cell adhesiveness, stiffness, factor presentation, degradation profile and responsiveness to (external) stimuli. This review aims to facilitate the development of more intelligent biomaterials in the future to satisfy the parameters, requirements, and opportunities for the effective treatment of TBI.
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Affiliation(s)
- Negar Mahmoudi
- Laboratory of Advanced Biomaterials, the John Curtin School of Medical Research, Australian National University, Canberra, ACT, 2601, Australia
- ANU College of Engineering & Computer Science, Australian National University, Canberra, ACT, 2601, Australia
- The Graeme Clark Institute, The University of Melbourne, Melbourne, VIC, 3010, Australia
- Department of Biomedical Engineering, Faculty of Engineering and Information Technology, The University of Melbourne, Melbourne, VIC, 3010, Australia
| | - Elmira Mohamed
- Laboratory of Advanced Biomaterials, the John Curtin School of Medical Research, Australian National University, Canberra, ACT, 2601, Australia
| | - Shiva Soltani Dehnavi
- Laboratory of Advanced Biomaterials, the John Curtin School of Medical Research, Australian National University, Canberra, ACT, 2601, Australia
- ANU College of Engineering & Computer Science, Australian National University, Canberra, ACT, 2601, Australia
| | - Lilith M Caballero Aguilar
- Laboratory of Advanced Biomaterials, the John Curtin School of Medical Research, Australian National University, Canberra, ACT, 2601, Australia
- The Graeme Clark Institute, The University of Melbourne, Melbourne, VIC, 3010, Australia
- Department of Biomedical Engineering, Faculty of Engineering and Information Technology, The University of Melbourne, Melbourne, VIC, 3010, Australia
| | - Alan R Harvey
- School of Human Sciences, The University of Western Australia, and Perron Institute for Neurological and Translational Science, Perth, WA, 6009, Australia
| | - Clare L Parish
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Melbourne, VIC, 3010, Australia
| | - Richard J Williams
- IMPACT, School of Medicine, Deakin University, Geelong, VIC, 3217, Australia
| | - David R Nisbet
- Laboratory of Advanced Biomaterials, the John Curtin School of Medical Research, Australian National University, Canberra, ACT, 2601, Australia
- The Graeme Clark Institute, The University of Melbourne, Melbourne, VIC, 3010, Australia
- Department of Biomedical Engineering, Faculty of Engineering and Information Technology, The University of Melbourne, Melbourne, VIC, 3010, Australia
- Melbourne Medical School, Faculty of Medicine, Dentistry and Health Science, The University of Melbourne, Melbourne, VIC, 3010, Australia
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Han S, Yuan X, Zhao F, Manyande A, Gao F, Wang J, Zhang W, Tian X. Activation of LXRs alleviates neuropathic pain-induced cognitive dysfunction by modulation of microglia polarization and synaptic plasticity via PI3K/AKT pathway. Inflamm Res 2024; 73:157-174. [PMID: 38183431 DOI: 10.1007/s00011-023-01826-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 10/20/2023] [Accepted: 11/22/2023] [Indexed: 01/08/2024] Open
Abstract
OBJECTIVE Cognitive dysfunction is a common comorbidity in patients with chronic pain. Activation of Liver X receptors (LXRs) plays a potential role in improving cognitive disorders in central nervous diseases. In this study, we investigated the role of LXRs in cognitive deficits induced by neuropathic pain. METHODS We established the spared nerve injury (SNI) model to investigate pain-induced memory dysfunction. Pharmacological activation of LXRs with T0901317 or inhibition with GSK2033 was applied. PI3K inhibitor LY294002 was administered to explore the underlying mechanism of LXRs. Changes in neuroinflammation, microglia polarization, and synaptic plasticity were assessed using biochemical technologies. RESULTS We found that SNI-induced cognitive impairment was associated with reduced LXRβ expression, increased M1-phenotype microglia, decreased synaptic proteins, and inhibition of PI3K/AKT signaling pathway in the hippocampus. Activation of LXRs using T0901317 effectively alleviated SNI-induced cognitive impairment. Additionally, T0901317 promoted the polarization of microglia from M1 to M2, reduced pro-inflammatory cytokines, and upregulated synaptic proteins in the hippocampus. However, administration of GSK2033 or LY294002 abolished these protective effects of T0901317 in SNI mice. CONCLUSIONS LXRs activation alleviates neuropathic pain-induced cognitive impairment by modulating microglia polarization, neuroinflammation, and synaptic plasticity, at least partly via activation of PI3K/AKT signaling in the hippocampus. LXRs may be promising targets for addressing pain-related cognitive deficits.
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Affiliation(s)
- Siyi Han
- Department of Anesthesiology, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1095 Jiefang Avenue, Wuhan, Hubei Province, China
| | - Xiaoman Yuan
- Department of Anesthesiology, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1095 Jiefang Avenue, Wuhan, Hubei Province, China
| | - Fengtian Zhao
- Department of Anesthesiology, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1095 Jiefang Avenue, Wuhan, Hubei Province, China
| | - Anne Manyande
- School of Human and Social Sciences, University of West London, London, UK
| | - Feng Gao
- Department of Anesthesiology, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1095 Jiefang Avenue, Wuhan, Hubei Province, China
| | - Jie Wang
- Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, Hubei Province, China
| | - Wen Zhang
- Department of Anesthesiology, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1095 Jiefang Avenue, Wuhan, Hubei Province, China.
| | - Xuebi Tian
- Department of Anesthesiology, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1095 Jiefang Avenue, Wuhan, Hubei Province, China.
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Wang Z, Lu Z, Chen Y, Wang C, Gong P, Jiang R, Liu Q. Targeting the AKT-P53/CREB pathway with epicatechin for improved prognosis of traumatic brain injury. CNS Neurosci Ther 2024; 30:e14364. [PMID: 37464589 PMCID: PMC10848092 DOI: 10.1111/cns.14364] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 06/13/2023] [Accepted: 06/25/2023] [Indexed: 07/20/2023] Open
Abstract
AIMS The aim of this study was to evaluate the effect of epicatechin, on neurological recovery and neuroinflammation after traumatic brain injury (TBI) to investigate its potential value in clinical practice. METHODS TBI model was established in adult rats by CCI method. The effect of epicatechin was evaluated after intraperitoneal injection. Neurological recovery after TBI was assessed by Morris Water Maze, mNSS score, Rotarod test and Adhesive removal test. Protein and gene expression was assessed by Western blot, ELISA, PCR and immunofluorescence. Furthermore, the use of AKT pathway inhibitors blocked the therapeutic effects of epicatechin clarifying AKT-P53/CREB as a potential pathway for the effects of epicatechin. RESULTS Administering epicatechin after TBI prevented neuronal death, reduced neuroinflammation, and promoted neurological function restoration in TBI rats. Network pharmacology study suggested that epicatechin may exert its therapeutic benefits through the AKT-P53/CREB pathway CONCLUSION: These results indicate that epicatechin, a monomeric compound derived from tea polyphenols, possesses potent antioxidant and anti-inflammatory properties after TBI. The mechanism may be related to the regulation of the AKT-P53/CREB signal pathway.
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Affiliation(s)
- Ziheng Wang
- Department of NeurosurgeryAffiliated Hospital of Nantong University, Medical School of Nantong UniversityNantongChina
- Research Center of Clinical MedicineAffiliated Hospital of Nantong UniversityNantongChina
- Centre for Precision Medicine Research and Training, Faculty of Health SciencesUniversity of MacauMacauChina
| | - Zhichao Lu
- Department of NeurosurgeryAffiliated Hospital of Nantong University, Medical School of Nantong UniversityNantongChina
- Research Center of Clinical MedicineAffiliated Hospital of Nantong UniversityNantongChina
| | - Yixun Chen
- Research Center of Clinical MedicineAffiliated Hospital of Nantong UniversityNantongChina
- Eye InstituteAffiliated Hospital of Nantong University, Medical School of Nantong UniversityNantongChina
| | - Chenxing Wang
- Department of NeurosurgeryAffiliated Hospital of Nantong University, Medical School of Nantong UniversityNantongChina
- Research Center of Clinical MedicineAffiliated Hospital of Nantong UniversityNantongChina
| | - Peipei Gong
- Department of NeurosurgeryAffiliated Hospital of Nantong University, Medical School of Nantong UniversityNantongChina
| | - Rui Jiang
- Department of NeurosurgeryAffiliated Hospital of Nantong University, Medical School of Nantong UniversityNantongChina
| | - Qianqian Liu
- Department of NeurosurgeryAffiliated Hospital of Nantong University, Medical School of Nantong UniversityNantongChina
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Marroquín-Rivera A, Zhao C, Pessoni AM, Bherer J, Mansouri S, Droit A, Labonté B. Immune-related transcriptomic and epigenetic reconfiguration in BV2 cells after lipopolysaccharide exposure: an in vitro omics integrative study. Inflamm Res 2024; 73:211-225. [PMID: 38216730 DOI: 10.1007/s00011-023-01830-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 11/27/2023] [Accepted: 11/29/2023] [Indexed: 01/14/2024] Open
Abstract
BACKGROUND Molecular alterations affecting microglia have been consistently associated with the inflammatory response. These cells can have pro- or anti-inflammatory activity, phenotypes thought to be regulated by epigenetic mechanisms. Still, little is known about the details on how epigenetic marks regulate the expression of genes in the context of an inflammatory response. METHODS Through CUT&RUN, we profiled four genome-wide histone marks (HM) (H3K4me1, H3K4me3, H3K27ac, and H3K27me3) in lipopolysaccharide-exposed cells and compared their distributions to control cells. Transcriptomic profiles were determined through RNA-seq and differentially expressed genes were identified and contrasted with the epigenetic landscapes. Other downstream analyses were also included in this study. RESULTS Our results illustrate an effectively induced M1 phenotype in microglial cells derived from LPS exposure. We observed differential bound regions associated with the genes classically involved in the inflammatory response in the expected direction according to each histone modification. Consistently, our transcriptomic analysis yielded a conspicuous illustration of the LPS-induced immune activity showing the up-regulation of Nf-κB-induced mRNAs (TNF-α, nfκbiz, nfκbia) and other important genes (Marco, Il-6, etc.). Furthermore, we integrated both omics profiles and identified an important reconfiguration of the genome induced by LPS. The latter was depicted by 8 different chromatin states that changed between conditions and that associated with unique clusters of differentially expressed genes, which not only represented regulatory elements, but also underlined distinct biological functions (inhibition of morphogenesis; changes in metabolism, homeostasis, and cytokine regulation; activation of the inflammatory response). CONCLUSION This study exhibits important differences in the distribution of histone modifications in treated and control BV2 cells, constituting an epigenetic reconfiguration that leads to the inflammatory response. Also, it highlights the importance of these marks' regulatory role in gene expression and provides possible targets for further studies in the context of inflammation.
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Affiliation(s)
- Arturo Marroquín-Rivera
- CERVO Brain Research Center, Québec City, QC, Canada
- Department of Psychiatry and Neurosciences, Faculty of Medicine, Université Laval, Québec City, QC, Canada
| | - Chenqi Zhao
- CERVO Brain Research Center, Québec City, QC, Canada
| | - André Moreira Pessoni
- CERVO Brain Research Center, Québec City, QC, Canada
- Department of Psychiatry and Neurosciences, Faculty of Medicine, Université Laval, Québec City, QC, Canada
| | | | - Samaneh Mansouri
- CERVO Brain Research Center, Québec City, QC, Canada
- Department of Social and Preventive Medicine, Faculty of Medicine, Université Laval, Québec City, QC, Canada
| | - Arnaud Droit
- Genomics Center, Centre Hospitalier Universitaire de Québec-Université Laval Research Center, Québec City, QC, Canada
- Department of Molecular Medicine, Faculty of Medicine, Université Laval, Québec City, QC, Canada
| | - Benoit Labonté
- CERVO Brain Research Center, Québec City, QC, Canada.
- Department of Psychiatry and Neurosciences, Faculty of Medicine, Université Laval, Québec City, QC, Canada.
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Martínez-Ramos S, Rafael-Vidal C, Malvar-Fernández B, Pérez N, Mouriño C, Pérez SG, Maceiras Pan FJ, Conde C, Pego-Reigosa JM, García S. Semaphorin3B promotes an anti-inflammatory and pro-resolving phenotype in macrophages from rheumatoid arthritis patients in a MerTK-dependent manner. Front Immunol 2024; 14:1268144. [PMID: 38283352 PMCID: PMC10811190 DOI: 10.3389/fimmu.2023.1268144] [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: 07/27/2023] [Accepted: 12/26/2023] [Indexed: 01/30/2024] Open
Abstract
Previous works from our group show that Semaphorin3B (Sema3B) is reduced in RA and plays a protective role in a mouse arthritis model. In turn, MerTK plays a protective function in murine arthritis models, is expressed by synovial tissue macrophages and is linked to remission in patients with RA. In this study, we examined the role of Sema3B in the phenotypic characteristics of RA macrophages and the implication of MerTK. Peripheral blood monocytes from RA patients were differentiated into IFN-γ (RA MØIFN-γ) or M-CSF (RA MØM-CSF) macrophages and stimulated with LPS, Sema3B or their combination. Alternatively, RA fibroblast like synoviocytes (FLS) were stimulated with RA MØIFN-γ and RA MØM-CSF supernatants. Gene expression was determined by qPCR and protein expression and activation by flow cytometry, ELISA and western blot. Sema3B down-regulated the expression of pro-inflammatory mediators, in both RA MØIFN-γ and RA MØM-CSF. We observed a similar reduction in RA FLS stimulated with the supernatant of Sema3B-treated RA MØIFN-γ and RA MØM-CSF. Sema3B also modulated cell surface markers in macrophages towards an anti-inflammatory phenotype. Besides, MerTK expression and activation was up-regulated by Sema3B, just as GAS6 expression, Resolvin D1 secretion and the phagocytic activity of macrophages. Importantly, the inhibition of MerTK and neuropilins 1 and 2 abrogated the anti-inflammatory effect of Sema3B. Our data demonstrate that Sema3B modulates the macrophage characteristics in RA, inducing a skewing towards an anti-inflammatory/pro-resolving phenotype in a MerTK-dependant manner. Therefore, here we identify a new mechanism supporting the protective role of Sema3B in RA pathogenesis.
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Affiliation(s)
- Sara Martínez-Ramos
- Rheumatology and Immuno-mediated Diseases Research Group (IRIDIS), Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, Vigo, Spain
- Rheumatology Department, University Hospital Complex of Vigo, Vigo, Spain
| | - Carlos Rafael-Vidal
- Rheumatology and Immuno-mediated Diseases Research Group (IRIDIS), Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, Vigo, Spain
- Rheumatology Department, University Hospital Complex of Vigo, Vigo, Spain
| | - Beatriz Malvar-Fernández
- Rheumatology and Immuno-mediated Diseases Research Group (IRIDIS), Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, Vigo, Spain
- Rheumatology Department, University Hospital Complex of Vigo, Vigo, Spain
| | - Nair Pérez
- Rheumatology and Immuno-mediated Diseases Research Group (IRIDIS), Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, Vigo, Spain
- Rheumatology Department, University Hospital Complex of Vigo, Vigo, Spain
| | - Coral Mouriño
- Rheumatology and Immuno-mediated Diseases Research Group (IRIDIS), Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, Vigo, Spain
- Rheumatology Department, University Hospital Complex of Vigo, Vigo, Spain
| | - Sara García Pérez
- Rheumatology and Immuno-mediated Diseases Research Group (IRIDIS), Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, Vigo, Spain
- Rheumatology Department, University Hospital Complex of Vigo, Vigo, Spain
| | - Francisco J. Maceiras Pan
- Rheumatology and Immuno-mediated Diseases Research Group (IRIDIS), Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, Vigo, Spain
- Rheumatology Department, University Hospital Complex of Vigo, Vigo, Spain
| | - Carmen Conde
- Laboratorio de Reumatologia Experimental y Observacional y Servicio de Reumatologia, Instituto de Investigacion Sanitaria de Santiago (IDIS), Hospital Clinico Universitario de Santiago de Compostela (CHUS), Servizo Galego de Saude (SERGAS), Santiago de Compostela, Spain
| | - Jose María Pego-Reigosa
- Rheumatology and Immuno-mediated Diseases Research Group (IRIDIS), Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, Vigo, Spain
- Rheumatology Department, University Hospital Complex of Vigo, Vigo, Spain
| | - Samuel García
- Rheumatology and Immuno-mediated Diseases Research Group (IRIDIS), Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, Vigo, Spain
- Rheumatology Department, University Hospital Complex of Vigo, Vigo, Spain
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Zeng J, Pei H, Wu H, Chen W, Du R, He Z. Palmatine attenuates LPS-induced neuroinflammation through the PI3K/Akt/NF-κB pathway. J Biochem Mol Toxicol 2024; 38:e23544. [PMID: 37815058 DOI: 10.1002/jbt.23544] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 08/16/2023] [Accepted: 09/26/2023] [Indexed: 10/11/2023]
Abstract
To investigate the key molecular mechanisms of palmatine for the treatment of neuroinflammation through modulation of a pathway using molecular docking, molecular dynamics (MD) simulation combined with network pharmacology, and animal experiments. Five alkaloid components were obtained from the traditional Chinese medicine Huangteng through literature mining. Molecular docking and MD simulation with acetylcholinesterase were used to screen palmatine. At the animal level, mice were injected with LPS intracerebrally to cause a neuroinflammatory model, and the Morris water maze experiment was performed to examine the learning memory of mice. Anxiety levels were tested using the autonomous activity behavior experiment with the open field and elevated behavior experiments. HE staining and Niss staining were performed on brain tissue sections to observe morphological lesions and apoptosis; serum was examined for inflammatory factors TNF-α, IL-6, and IL-1β; Western blot was performed to detect the protein expression. The expression of PI3K/AKT/NFkB signaling pathway-related proteins was examined by Western blot. The results of network pharmacology showed that the screening of palmatine activation containing the PI3K/Akt/NFkB signaling pathway exerts antineuroinflammatory effects. Results from behavioral experiments showed that Pal enhanced learning memory in model mice, improved anxiety behavior, and significantly improved brain damage caused by neuroinflammation. The results of HE staining and Niss staining of brain tissue sections showed that palmatine could alleviate morphological lesions and nucleus damage in brain tissue. Palmatine improved the levels of serum inflammatory factors TNF-α, IL-6, and IL-1β. SOD, MDA, CAT, ACH, and ACHE in the hippocampus were improved. Western blot results showed that palmatine administration ameliorated LPS-induced neuroinflammation through the PI3K/Akt/NFkB pathway.
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Affiliation(s)
- Jianning Zeng
- Department of Agriculture and Rural Affairs of Jilin Province Pharmacy and Pharmaceutical Science and Technology, College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, Jilin, China
| | - Hongyan Pei
- Department of Agriculture and Rural Affairs of Jilin Province Pharmacy and Pharmaceutical Science and Technology, College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, Jilin, China
| | - Hong Wu
- Department of Agriculture and Rural Affairs of Jilin Province Pharmacy and Pharmaceutical Science and Technology, College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, Jilin, China
| | - Weijia Chen
- Department of Agriculture and Rural Affairs of Jilin Province Pharmacy and Pharmaceutical Science and Technology, College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, Jilin, China
| | - Rui Du
- Department of Science and Technology of Jilin Province, Department of Traditional Chinese Medicine Industry in Xinjiang, Engineering Research Center for High-Efficiency Breeding and Product Development Technology of Sika Deer, Jilin, China
| | - Zhongmei He
- Department of Agriculture and Rural Affairs of Jilin Province Pharmacy and Pharmaceutical Science and Technology, College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, Jilin, China
- Department of Science and Technology of Jilin Province, Department of Traditional Chinese Medicine Industry in Xinjiang, Engineering Research Center for High-Efficiency Breeding and Product Development Technology of Sika Deer, Jilin, China
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Long Y, Li XQ, Deng J, Ye QB, Li D, Ma Y, Wu YY, Hu Y, He XF, Wen J, Shi A, Yu S, Shen L, Ye Z, Zheng C, Li N. Modulating the polarization phenotype of microglia - A valuable strategy for central nervous system diseases. Ageing Res Rev 2024; 93:102160. [PMID: 38065225 DOI: 10.1016/j.arr.2023.102160] [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: 05/05/2023] [Accepted: 12/04/2023] [Indexed: 12/30/2023]
Abstract
Central nervous system (CNS) diseases have become one of the leading causes of death in the global population. The pathogenesis of CNS diseases is complicated, so it is important to find the patterns of the disease to improve the treatment strategy. Microglia are considered to be a double-edged sword, playing both harmful and beneficial roles in CNS diseases. Therefore, it is crucial to understand the progression of the disease and the changes in the polar phenotype of microglia to provide guidance in the treatment of CNS diseases. Microglia activation may evolve into different phenotypes: M1 and M2 types. We focused on the roles that M1 and M2 microglia play in regulating intercellular dialogues, pathological reactions and specific diseases in CNS diseases. Importantly, we summarized the strategies used to modulate the polarization phenotype of microglia, including traditional pharmacological modulation, biological therapies, and physical strategies. This review will contribute to the development of potential strategies to modulate microglia polarization phenotypes and provide new alternative therapies for CNS diseases.
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Affiliation(s)
- Yu Long
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Xiao-Qiu Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Jie Deng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Qiao-Bo Ye
- School of Basic Medical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China.
| | - Dan Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Yin Ma
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Yuan-Yuan Wu
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Yue Hu
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Xiao-Fang He
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Jing Wen
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Ai Shi
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Shuang Yu
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Lin Shen
- Second Teaching Hospital of Tianjin University of Traditional Chinese Medine, Tianjin, China.
| | - Zhen Ye
- School of Basic Medical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China.
| | - Chuan Zheng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Nan Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
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Liang Y, Chen L, Huang Y, Xie L, Liu X, Zhou W, Cao W, Chen Z, Zhong X. Betaine eliminates CFA-induced depressive-like behaviour in mice may be through inhibition of microglia and astrocyte activation and polarization. Brain Res Bull 2024; 206:110863. [PMID: 38145759 DOI: 10.1016/j.brainresbull.2023.110863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 12/03/2023] [Accepted: 12/22/2023] [Indexed: 12/27/2023]
Abstract
Chronic pain can induce not only nociceptive but also depressive emotions. A previous study demonstrated that betaine, a commonly used nutrient supplement, has an anti-nociceptive effect, but whether betaine can alleviate chronic pain-induced depressive emotion is elusive. Our current study found that betaine administration significantly eliminated complete Freund's adjuvant (CFA)-induced pain-related depressive-like behaviour. Mechanistically, betaine treatment inhibited microglia and astrocyte activation. Furthermore, betaine significantly promoted the transition of microglia from the M1 to the M2 phenotype, as well as the transition of astrocytes from the A1 to the A2 phenotype. Additionally, the release of pro-inflammatory factors such as IL-18, IL-1β and IL-6 and anti-inflammatory factors such as IL-10 in the hippocampus induced by CFA were also reversed by betaine administration. Overall, betaine has therapeutic effects on pain-related depressive-like phenotypes caused by CFA, possibly through altering the polarization of microglia and astrocytes to reduce neuroinflammation.
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Affiliation(s)
- Yue Liang
- The First Affiliated Hospital, Department of Endocrinology and Metabolism, Hengyang Medical School, University of South China, 421001 Hengyang, Hunan, China; The First Affiliated Hospital, Department of Laboratory Medicine, Hengyang Medical School, University of South China, 421001 Hengyang, Hunan, China
| | - Ling Chen
- The First Affiliated Hospital, Department of Endocrinology and Metabolism, Hengyang Medical School, University of South China, 421001 Hengyang, Hunan, China
| | - Yanmei Huang
- The First Affiliated Hospital, Department of Laboratory Medicine, Hengyang Medical School, University of South China, 421001 Hengyang, Hunan, China
| | - Lihua Xie
- The First Affiliated Hospital, Department of Laboratory Medicine, Hengyang Medical School, University of South China, 421001 Hengyang, Hunan, China
| | - Xueqin Liu
- The First Affiliated Hospital, Department of Endocrinology and Metabolism, Hengyang Medical School, University of South China, 421001 Hengyang, Hunan, China
| | - Wenyan Zhou
- The First Affiliated Hospital, Department of Endocrinology and Metabolism, Hengyang Medical School, University of South China, 421001 Hengyang, Hunan, China
| | - Wenyu Cao
- Department of Human Anatomy, Hengyang Medical School, University of South China, 421001 Hengyang, Hunan, China
| | - Zuyao Chen
- The First Affiliated Hospital, Department of Otorhinolaryngology, Hengyang Medical School, University of South China, 421001 Hengyang, Hunan, China.
| | - Xiaolin Zhong
- The First Affiliated Hospital, Department of Endocrinology and Metabolism, Hengyang Medical School, University of South China, 421001 Hengyang, Hunan, China.
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Ahmed CM, Patel AP, Johnson HM, Ildefonso CJ, Lewin AS. Suppressor of cytokine signaling 3-derived peptide as a therapeutic for inflammatory and oxidative stress-induced damage to the retina. Mol Vis 2023; 29:338-356. [PMID: 38264613 PMCID: PMC10805335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 12/15/2023] [Indexed: 01/25/2024] Open
Abstract
Purpose Inflammation and oxidative stress contribute to age-related macular degeneration (AMD) and other retinal diseases. We tested a cell-penetrating peptide from the kinase inhibitory region of an intracellular checkpoint inhibitor suppressor of cytokine signaling 3 (R9-SOCS3-KIR) peptide for its ability to blunt the inflammatory or oxidative pathways leading to AMD. Methods We used anaphylatoxin C5a to mimic the effect of activated complement, lipopolysaccharide (LPS), and tumor necrosis factor alpha (TNFα) to stimulate inflammation and paraquat to induce mitochondrial oxidative stress. We used a human retinal pigment epithelium (RPE) cell line (ARPE-19) as proliferating cells and a mouse macrophage cell line (J774A.1) to follow cell propagation using microscopy or cell titer assays. We evaluated inflammatory pathways by monitoring the nuclear translocation of NF-κB p65 and mitogen-activated protein kinase p38. Quantitative reverse transcription polymerase chain reaction (qRT-PCR) and Western blot were used to evaluate the induction of inflammatory markers. In differentiated ARPE-19 monolayers, we evaluated the integrity of tight junction proteins through microscopy and the measurement of transepithelial electrical resistance (TEER). We used intraperitoneal injection of sodium iodate in mice to test the ability of R9-SOC3-KIR to prevent RPE and retinal injury, as assessed by fundoscopy, optical coherence tomography, and histology. Results R9-SOCS3-KIR treatment suppressed C5a-induced nuclear translocation of the NF-kB activation domain p65 in undifferentiated ARPE-19 cells. TNF-mediated damage to tight junction proteins in RPE, and the loss of TEER was prevented in the presence of R9-SOCS3-KIR. Treatment with the R9-SOCS3-KIR peptide blocked the C5a-induced expression of inflammatory genes. The R9-SOCS3-KIR treatment also blocked the LPS-induced expression of interleukin-6, MCP1, cyclooxygenase 2, and interleukin-1 beta. R9-SOCS3-KIR prevented paraquat-mediated cell death and enhanced the levels of antioxidant effectors. Daily eye drop treatment with R9-SOCS3-KIR protected against retinal injury caused by i.p. administration of sodium iodate. Conclusions R9-SOCS3-KIR blocks the induction of inflammatory signaling in cell culture and reduces retinal damage in a widely used RPE/retinal oxidative injury model. As this peptide can be administered through corneal instillation, this treatment may offer a convenient way to slow down the progression of ocular diseases arising from inflammation and chronic oxidative stress.
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Affiliation(s)
- Chulbul M Ahmed
- Department of Molecular Genetics and Microbiology, University of Florida Gainesville, FL
| | - Anil P Patel
- Department of Molecular Genetics and Microbiology, University of Florida Gainesville, FL
| | - Howard M Johnson
- Department of Microbiology and Cell Science, University of Florida Gainesville, FL
| | | | - Alfred S Lewin
- Department of Molecular Genetics and Microbiology, University of Florida Gainesville, FL
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Qi Z, Yu Y, Su Y, Cao B, Shao H, Yang JJ. M1-Type Microglia-Derived Extracellular Vesicles Overexpressing IL-1R1 Promote Postoperative Cognitive Dysfunction by Regulating Neuronal Inflammation. Inflammation 2023; 46:2254-2269. [PMID: 37505422 DOI: 10.1007/s10753-023-01875-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/30/2023] [Accepted: 07/10/2023] [Indexed: 07/29/2023]
Abstract
Postoperative cognitive dysfunction (POCD) is a common complication after surgical anesthesia, mainly manifested as memory impairment, decreased attention, and cognitive function with mood and personality changes. Activated microglia (M1-type microglia) have been demonstrated to release inflammatory substances (IL-1β, TNF-α, etc.) that cause neuronal degeneration and death by activating the NF-κB signaling pathway and upregulating Caspase-3 and Bax. However, the pathogenesis of POCD is still not fully understood and needs further research. In the present study, we investigated the effect of M1-type microglia-derived extracellular vesicles (EVsM1-Microglia) in the pathological process of POCD. The levels of NF-κB phosphorylation and IL-1β protein expression in hippocampal neurons were significantly increased in the Surgery group, while PSD95 and MAP2 were significantly decreased. Surgery induced microglia activation, synapse-associated protein decrease, and neuronal degeneration in hippocampus. And the amount of spine and mushroom spine significantly decreased in surgical mice, which was reverted in the presence of IL-1R1 siRNA. In addition, EVsM1-Microglia promoted synaptic loss and neuron degeneration independent of surgery and microglia activation. Furthermore, EVsM1-Microglia promoted memory defects in surgical mice. We demonstrated that EVsM1-Microglia with high expression of IL-1R1 promote POCD development by regulating neuronal inflammation.
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Affiliation(s)
- Zheng Qi
- Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe Dong Road, Zhengzhou, 450000, People's Republic of China
- Henan Province International Joint Laboratory of Pain, Cognition and Emotion, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe Dong Road, Zhengzhou, 450000, People's Republic of China
| | - Yang Yu
- Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe Dong Road, Zhengzhou, 450000, People's Republic of China
- Henan Province International Joint Laboratory of Pain, Cognition and Emotion, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe Dong Road, Zhengzhou, 450000, People's Republic of China
| | - Yu Su
- Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, People's Republic of China
| | - Bin Cao
- Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe Dong Road, Zhengzhou, 450000, People's Republic of China
- Henan Province International Joint Laboratory of Pain, Cognition and Emotion, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe Dong Road, Zhengzhou, 450000, People's Republic of China
| | - Hua Shao
- Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe Dong Road, Zhengzhou, 450000, People's Republic of China
- Henan Province International Joint Laboratory of Pain, Cognition and Emotion, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe Dong Road, Zhengzhou, 450000, People's Republic of China
| | - Jian-Jun Yang
- Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe Dong Road, Zhengzhou, 450000, People's Republic of China.
- Henan Province International Joint Laboratory of Pain, Cognition and Emotion, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe Dong Road, Zhengzhou, 450000, People's Republic of China.
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Xia X, Yang Z, Zhang J, Fu X, Han B, Xiong Q, Yu A. E3 ligase Nedd4L promotes macrophage M1 polarization and exacerbates brain damage by TRAF3/TBK1 signaling pathway after ICH in mice. Immunol Lett 2023; 264:36-45. [PMID: 37940007 DOI: 10.1016/j.imlet.2023.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 11/03/2023] [Accepted: 11/03/2023] [Indexed: 11/10/2023]
Abstract
BACKGROUND Intracerebral hemorrhage (ICH) is a serious medical problem, and promising strategy is limited. Macrophage initiated brain inflammatory injury following ICH, but the molecular mechanism had not been well identified. E3 ligase Nedd4L is implicated in the pathogenesis of the inflammatory immune response. METHODS In the present study, we detected the levels of Nedd4L in macrophages following ICH. Furthermore, Macrophage M1 polarization, pro-inflammatory cytokine production, BBB disruption, brain water content and neurological function were examined in ICH mice. RESULTS Here, we demonstrated that E3 ligase Nedd4L levels of macrophage increased following ICH, promoted M1 polarization inflammation by TRAF3. Nedd4L promoted BBB disruption, as well as neurological deficits. Inhibition of Nedd4L significantly attenuated M1 polarization in vivo. Inhibition of Nedd4L decreased TRAF3 and TBK1 levels, and subsequent phosphorylation of p38 and NF-κB p65 subunit following ICH. CONCLUSIONS Our data demonstrated that Nedd4L was involved in the pathogenesis of ICH, which promoted inflammatory responses and exacerbated brain damage by TRAF3 following ICH.
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Affiliation(s)
- Xiaohui Xia
- Department of Neurosurgery, Yongchuan Hospital, Chongqing Medical University, Chongqing 402160, China
| | - Zhao Yang
- Department of Neurosurgery, Yongchuan Hospital, Chongqing Medical University, Chongqing 402160, China
| | - Jiangwei Zhang
- Department of Neurosurgery, Yongchuan Hospital, Chongqing Medical University, Chongqing 402160, China
| | - Xiongjie Fu
- Department of Neurosurgery, Yongchuan Hospital, Chongqing Medical University, Chongqing 402160, China
| | - Bin Han
- Department of Neurosurgery, Yongchuan Hospital, Chongqing Medical University, Chongqing 402160, China
| | - Qijiang Xiong
- Department of Neurosurgery, Yongchuan Hospital, Chongqing Medical University, Chongqing 402160, China.
| | - Anyong Yu
- Department of Emergency, Afffliated Hospital of Zunyi Medical University, Guizhou 563003, China.
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Zhao R, He T, Xing Y, Luo J. COG1410 regulates microglial states and protects retinal ganglion cells in retinal ischemia-reperfusion injury. Exp Eye Res 2023; 237:109678. [PMID: 37839665 DOI: 10.1016/j.exer.2023.109678] [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: 06/07/2023] [Revised: 09/26/2023] [Accepted: 10/12/2023] [Indexed: 10/17/2023]
Abstract
Progressive loss of retinal ganglion cells (RGCs) caused by retinal ischemia-reperfusion (IR) injury can lead to irreversible vision impairment, with neuroinflammatory responses playing an important role in this process. COG1410, a mimetic peptide of apolipoprotein E, has demonstrated protective potential in the central nervous system, but its effects on retinal IR injury remain unexplored. In this study, we established a mouse model of retinal IR injury to investigate the effects of COG1410 on retinal microglia and RGCs. We observed CD16/32-marked and CD206-marked microglia and RGCs using immunofluorescence staining, detected the expression of inflammatory factors by PCR, and evaluated retinal apoptosis with TUNEL staining. We further investigated the potential mechanism by detecting the expression of key proteins via Western blot. The results reveal that COG1410 decreased the number of CD16/32-marked microglia and increased the number of CD206-marked microglia, alleviated the expression of IL-1β and TNF-α, and reduced the loss of RGCs by inhibiting the mitochondrial-related apoptotic pathway. COG1410 was found to increase the expression of ERK1/2 and Nr4a1 but decrease the expression of NF-κB. The expression of TREM2 showed an increasing trend after COG1410 administration, but it was not statistically significant. In conclusion, COG1410 regulates microglial states and protects RGCs in retinal IR injury, showing promising potential for the treatment of eye diseases.
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Affiliation(s)
- Ru Zhao
- Department of Ophthalmology, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Tao He
- Department of Ophthalmology, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Yiqiao Xing
- Department of Ophthalmology, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Jinyuan Luo
- Department of Ophthalmology, Renmin Hospital of Wuhan University, Wuhan, 430060, China.
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Fesharaki-Zadeh A. Navigating the Complexities of Traumatic Encephalopathy Syndrome (TES): Current State and Future Challenges. Biomedicines 2023; 11:3158. [PMID: 38137378 PMCID: PMC10740836 DOI: 10.3390/biomedicines11123158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 11/22/2023] [Accepted: 11/23/2023] [Indexed: 12/24/2023] Open
Abstract
Chronic traumatic encephalopathy (CTE) is a unique neurodegenerative disease that is associated with repetitive head impacts (RHI) in both civilian and military settings. In 2014, the research criteria for the clinical manifestation of CTE, traumatic encephalopathy syndrome (TES), were proposed to improve the clinical identification and understanding of the complex neuropathological phenomena underlying CTE. This review provides a comprehensive overview of the current understanding of the neuropathological and clinical features of CTE, proposed biomarkers of traumatic brain injury (TBI) in both research and clinical settings, and a range of treatments based on previous preclinical and clinical research studies. Due to the heterogeneity of TBI, there is no universally agreed-upon serum, CSF, or neuroimaging marker for its diagnosis. However, as our understanding of this complex disease continues to evolve, it is likely that there will be more robust, early diagnostic methods and effective clinical treatments. This is especially important given the increasing evidence of a correlation between TBI and neurodegenerative conditions, such as Alzheimer's disease and CTE. As public awareness of these conditions grows, it is imperative to prioritize both basic and clinical research, as well as the implementation of necessary safe and preventative measures.
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Affiliation(s)
- Arman Fesharaki-Zadeh
- Department of Neurology and Psychiatry, Yale University School of Medicine, New Haven, CT 06510, USA
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Xu S, Hao K, Xiong Y, Xu R, Huang H, Wang H. Capsaicin alleviates neuronal apoptosis and schizophrenia-like behavioral abnormalities induced by early life stress. SCHIZOPHRENIA (HEIDELBERG, GERMANY) 2023; 9:77. [PMID: 37935716 PMCID: PMC10630396 DOI: 10.1038/s41537-023-00406-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Accepted: 10/25/2023] [Indexed: 11/09/2023]
Abstract
Early life stress (ELS) is associated with the later development of schizophrenia. In the rodent model, the maternal separation (MS) stress may induce neuronal apoptosis and schizophrenia-like behavior. Although the TRPV1 agonist capsaicin (CAP) has been reported to reduce apoptosis in the central nervous system, its effect in MS models is unclear. Twenty-four hours of MS of Wistar rat pups on postnatal day (PND9) was used as an ELS. Male rats in the adult stage were the subjects of the study. CAP (1 mg/kg/day) intraperitoneal injection pretreatment was undertaken before behavioral tests for 1 week and continued during the tests. Behavioral tests included open field, novel object recognition, Barnes maze test, and pre-pulse inhibition (PPI) test. MS rats showed behavioral deficits and cognitive impairments mimicking symptoms of schizophrenia compared with controls. MS decreased the expression of TRPV1 in the frontal association cortex (FrA) and in the hippocampal CA1, CA3, and dentate gyrus (DG) regions compared with the control group resulting in the increase of pro-apoptotic proteins (BAX, Caspase3, Cleaved-Caspase3) and the decrease of anti-apoptotic proteins (Bcl-2). The number of NeuN++TUNEL+ cells increased in the MS group in the FrA, CA1, CA3, and DG compared with the control group. Neuronal and behavioral impairments of MS were reversed by treatment with CAP. Exposure to ELS may lead to increased neuronal apoptosis and impaired cognitive function with decreased TRPV1 expression in the prefrontal cortex and hippocampus in adulthood. Sustained low-dose administration of CAP improved neuronal apoptosis and cognitive function. Our results provide evidence for future clinical trials of chili peppers or CAP as dietary supplements for the reversal treatment of schizophrenia.
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Affiliation(s)
- Shilin Xu
- Department of Psychiatry, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Keke Hao
- Department of Psychiatry, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Ying Xiong
- Department of Psychiatry, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Rui Xu
- Department of Psychiatry, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Huan Huang
- Department of Psychiatry, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Huiling Wang
- Department of Psychiatry, Renmin Hospital of Wuhan University, Wuhan, 430060, China.
- Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, 430071, China.
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