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Wang C, Cheng F, Han Z, Yan B, Liao P, Yin Z, Ge X, Li D, Zhong R, Liu Q, Chen F, Lei P. Human-induced pluripotent stem cell-derived neural stem cell exosomes improve blood-brain barrier function after intracerebral hemorrhage by activating astrocytes via PI3K/AKT/MCP-1 axis. Neural Regen Res 2025; 20:518-532. [PMID: 38819064 PMCID: PMC11317932 DOI: 10.4103/nrr.nrr-d-23-01889] [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: 11/17/2023] [Revised: 01/22/2024] [Accepted: 03/07/2024] [Indexed: 06/01/2024] Open
Abstract
JOURNAL/nrgr/04.03/01300535-202502000-00029/figure1/v/2024-05-28T214302Z/r/image-tiff Cerebral edema caused by blood-brain barrier injury after intracerebral hemorrhage is an important factor leading to poor prognosis. Human-induced pluripotent stem cell-derived neural stem cell exosomes (hiPSC-NSC-Exos) have shown potential for brain injury repair in central nervous system diseases. In this study, we explored the impact of hiPSC-NSC-Exos on blood-brain barrier preservation and the underlying mechanism. Our results indicated that intranasal delivery of hiPSC-NSC-Exos mitigated neurological deficits, enhanced blood-brain barrier integrity, and reduced leukocyte infiltration in a mouse model of intracerebral hemorrhage. Additionally, hiPSC-NSC-Exos decreased immune cell infiltration, activated astrocytes, and decreased the secretion of inflammatory cytokines like monocyte chemoattractant protein-1, macrophage inflammatory protein-1α, and tumor necrosis factor-α post-intracerebral hemorrhage, thereby improving the inflammatory microenvironment. RNA sequencing indicated that hiPSC-NSC-Exo activated the PI3K/AKT signaling pathway in astrocytes and decreased monocyte chemoattractant protein-1 secretion, thereby improving blood-brain barrier integrity. Treatment with the PI3K/AKT inhibitor LY294002 or the monocyte chemoattractant protein-1 neutralizing agent C1142 abolished these effects. In summary, our findings suggest that hiPSC-NSC-Exos maintains blood-brain barrier integrity, in part by downregulating monocyte chemoattractant protein-1 secretion through activation of the PI3K/AKT signaling pathway in astrocytes.
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Affiliation(s)
- Conglin Wang
- Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China
| | - Fangyuan Cheng
- Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China
| | - Zhaoli Han
- Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China
| | - Bo Yan
- Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China
| | - Pan Liao
- School of Medicine, Nankai University, Tianjin, China
| | - Zhenyu Yin
- Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China
| | - Xintong Ge
- Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China
| | - Dai Li
- Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China
| | - Rongrong Zhong
- Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China
| | - Qiang Liu
- Tianjin Neurological Institute, Tianjin, China
| | | | - Ping Lei
- Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China
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Zhang W, Ren C, Yang Y, Xu J, Tong F, Wu X, Yang Y. Ginseng aconitum decoction (Shenfu Tang) provides neuroprotection by ameliorating impairment of blood-brain barrier in cerebral ischemia-reperfusion injury. Brain Res 2024; 1842:149098. [PMID: 38942350 DOI: 10.1016/j.brainres.2024.149098] [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: 05/21/2024] [Revised: 06/18/2024] [Accepted: 06/25/2024] [Indexed: 06/30/2024]
Abstract
Ischemic stroke (IS) remains one of the most serious threats to human life. Early blood-brain barrier damage (BBB) is the cause of parenchymal cell damage. Repair of the structure and function of the BBB is beneficial for the treatment of IS. The traditional prescription ginseng aconitum decoction (GAD) has a long history in the treatment of cardiovascular and cerebrovascular diseases, however, the effect of GAD on the BBB disruption and underlying mechanisms remains largely unknown. To address these issues, in vitro models of BBB were established with brain endothelial cells (bEnd.3). We found that GAD reduced the leakage of the fluorescent probe FITC-dextran (P < 0.01) and increased the expression of tight junction proteins (Claudin-5, ZO-1) (P < 0.05) in the BBB model in vitro. Furthermore, to investigate the BBB protective effects of GAD in vivo. A total of 25 male C57/BL6 mice (20 - 22 g) were randomly divided into 5 groups (n = 5 per group): (1) Sham group (saline), (2) MCAO group (saline), (3) MCAO + CG group (Chinese ginseng 8 mg/kg/day), (4) MCAO + AC group (aconite 8 mg/kg/day), (5) MCAO + GAD group (GAD 8 mg/kg/day).We constructed IS model in mice and found that GAD treatment reduced IgG leakage (P < 0.05), up-regulated the expression of tight junction proteins Claudin-5, Occludin, and ZO-1 (P < 0.05). Further mechanism study showed that fatty acid oxidation (FAO) of vascular endothelial cells is involved in the protection of the BBB after IS, and GAD regulates FAO (P < 0.05) to protect BBB. In addition, we found the effect of GAD was stronger than that of Chinese ginseng (CG) (P < 0.05) and aconite (AC) (P < 0.01) alone. We concluded that GAD ameliorated the BBB dysfunction by regulating FAO involving vascular endothelial cells after IS. At the same time, the prescription is more effective than single traditional Chinese medicine.
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Affiliation(s)
- Wei Zhang
- School of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China; Beijing Key Laboratory of Hypoxia Conditioning Translational Medicine, Xuanwu Hospital, Capital Medical University, Beijing 100053, China; Center of Stroke, Beijing Institute for Brain Disorder, Capital Medical University, Beijing 100053, China
| | - Changhong Ren
- Beijing Key Laboratory of Hypoxia Conditioning Translational Medicine, Xuanwu Hospital, Capital Medical University, Beijing 100053, China; Center of Stroke, Beijing Institute for Brain Disorder, Capital Medical University, Beijing 100053, China
| | - Yu Yang
- School of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Jun Xu
- Beijing Key Laboratory of Hypoxia Conditioning Translational Medicine, Xuanwu Hospital, Capital Medical University, Beijing 100053, China; Center of Stroke, Beijing Institute for Brain Disorder, Capital Medical University, Beijing 100053, China
| | - Fang Tong
- Beijing Key Laboratory of Hypoxia Conditioning Translational Medicine, Xuanwu Hospital, Capital Medical University, Beijing 100053, China
| | - Xiaodan Wu
- School of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China.
| | - Yong Yang
- School of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China.
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Ma J, Liu Y, Hu J, Liu X, Xia Y, Xia W, Shen Z, Kong X, Wu X, Mao L, Li Q. Tirzepatide administration improves cognitive impairment in HFD mice by regulating the SIRT3-NLRP3 axis. Endocrine 2024:10.1007/s12020-024-04013-w. [PMID: 39222203 DOI: 10.1007/s12020-024-04013-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 08/21/2024] [Indexed: 09/04/2024]
Abstract
PURPOSE High-fat diet (HFD) currently is reported that in connection with cognitive impairment. Tirzepatide is a novel dual receptor agonist for glycemic control. But whether Tirzepatide exerts a protective effect in HFD-related cognitive impairment remains to be explore. METHODS During the study, the cognitive dysfunction mice model induced by HFD were established. The expressions synapse-associated protein and other target proteins were detected. The oxidative stress parameters, levels of inflammatory cytokine were also detected. RESULTS Our findings proved that Tirzepatide administration attenuates high fat diet-related cognitive impairment. Tirzepatide administration suppresses microglia activation, alleviates oxidative stress as well as suppressed the expression of NLRP3 in HFD mice by up-regulating SIRT3 expression. In conclusion, Tirzepatide attenuates HFD-induced cognitive impairment through reducing oxidative stress and neuroinflammation via SIRT3-NLRP3 signaling. CONCLUSION This study suggest that Tirzepatide has neuroprotective effects in HFD-related cognitive dysfunction mice model, which provides a promising treatment of HFD-related cognitive impairment.
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Affiliation(s)
- Jingjing Ma
- Department of Endocrinology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Qinhuai District, Nanjing, 21006, China
- Department of Endocrinology, The Affifiliated Huaian No. 1 People's Hospital of Nanjing Medical University, Huai'an, 223300, China
| | - Yuanyuan Liu
- Department of Endocrinology, The Affifiliated Huaian No. 1 People's Hospital of Nanjing Medical University, Huai'an, 223300, China
| | - Junya Hu
- Department of Pharmacy, Nanjing First Hospital, China Pharmaceutical University, Nanjing, 210006, China
| | - Xingjing Liu
- Department of Endocrinology, The Affifiliated Huaian No. 1 People's Hospital of Nanjing Medical University, Huai'an, 223300, China
| | - Yin Xia
- Department of Endocrinology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Qinhuai District, Nanjing, 21006, China
| | - Wenqing Xia
- Department of Endocrinology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Qinhuai District, Nanjing, 21006, China
| | - Ziyang Shen
- Department of Endocrinology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Qinhuai District, Nanjing, 21006, China
| | - Xiaocen Kong
- Department of Endocrinology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Qinhuai District, Nanjing, 21006, China
| | - Xia Wu
- Department of Endocrinology, Affiliated Jiangyin Hospital of Nantong University, Wuxi, 214400, China
| | - Li Mao
- Department of Endocrinology, The Affifiliated Huaian No. 1 People's Hospital of Nanjing Medical University, Huai'an, 223300, China.
| | - Qian Li
- Department of Endocrinology, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Qinhuai District, Nanjing, 21006, China.
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Zhang L, Zhao G, Luo Z, Yu Z, Liu G, Su G, Tang X, Yuan Z, Huang C, Sun HS, Feng ZP, Huang Z. AD16 attenuates neuroinflammation induced by cerebral ischemia through down-regulating astrocytes A1 polarization. Biomed Pharmacother 2024; 178:117209. [PMID: 39094544 DOI: 10.1016/j.biopha.2024.117209] [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: 02/16/2024] [Revised: 07/23/2024] [Accepted: 07/23/2024] [Indexed: 08/04/2024] Open
Abstract
A1 polarization of astrocytes mediated prolonged inflammation contributing to brain injury in ischemic stroke. We have previously shown that AD16 protects against neonatal hypoxic-ischemic brain damage in vivo and oxygen-glucose deprivation in vitro. More recently, AD16 has demonstrated safety, tolerability, and favorable pharmacokinetics in a randomized controlled phase I trial. In this study, we utilized a rat model of transient middle cerebral artery occlusion (tMCAO) to explore whether the anti-inflammatory compound AD16 protects against ischemic brain injury by regulating A1 polarization and its underlying mechanisms. Our results showed that AD16 treatment significantly reduced the brain infarcted volume and improved neurological function in tMCAO rats. GO analysis results show that differential genes among the Sham, tMCAO and AD16 treatment groups are involved in the regulation of cytokine and inflammatory response. KEGG enrichment pathways analysis mainly enriched in cytokine-cytokine receptor interaction, viral protein interaction with cytokine-cytokine receptor, TNF, chemokine, NF-κB and IL-17 signaling pathway. Furthermore, AD16 treatment decreased the permeability of the blood-brain barrier and suppressed neuroinflammation. AD16 treatment also significantly reduced the polarization of A1 and inhibited NF-κB and JAK2/STAT3 signaling pathways. This study demonstrates that AD16 protects against brain injury in ischemic stroke by reducing A1 polarization to suppress neuroinflammation through downregulating NF-κB and JAK2/STAT3 signaling. Our findings uncover a potential molecular mechanism for AD16 and suggest that AD16 holds promising therapeutic potential against cerebral ischemia.
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Affiliation(s)
- Limei Zhang
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Jiangxi Province Key Laboratory of Pharmacology of Traditional Chinese Medicine, Ganzhou Key Laboratory of Neuroinflammation Research, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou 341000, China; School of Basic Medical Sciences, China Medical University, Shengyang 110122, China
| | - Guojian Zhao
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Jiangxi Province Key Laboratory of Pharmacology of Traditional Chinese Medicine, Ganzhou Key Laboratory of Neuroinflammation Research, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou 341000, China
| | - Zhengwei Luo
- Department of Physiology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada; Department of Surgery, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Zining Yu
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Jiangxi Province Key Laboratory of Pharmacology of Traditional Chinese Medicine, Ganzhou Key Laboratory of Neuroinflammation Research, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou 341000, China
| | - Gaigai Liu
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Jiangxi Province Key Laboratory of Pharmacology of Traditional Chinese Medicine, Ganzhou Key Laboratory of Neuroinflammation Research, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou 341000, China
| | - Guangjun Su
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Jiangxi Province Key Laboratory of Pharmacology of Traditional Chinese Medicine, Ganzhou Key Laboratory of Neuroinflammation Research, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou 341000, China
| | - Xiaolu Tang
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Jiangxi Province Key Laboratory of Pharmacology of Traditional Chinese Medicine, Ganzhou Key Laboratory of Neuroinflammation Research, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou 341000, China
| | - Zhidong Yuan
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Jiangxi Province Key Laboratory of Pharmacology of Traditional Chinese Medicine, Ganzhou Key Laboratory of Neuroinflammation Research, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou 341000, China
| | - Cheng Huang
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Jiangxi Province Key Laboratory of Pharmacology of Traditional Chinese Medicine, Ganzhou Key Laboratory of Neuroinflammation Research, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou 341000, China
| | - Hong-Shuo Sun
- Department of Physiology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada; Department of Surgery, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada.
| | - Zhong-Ping Feng
- Department of Physiology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada.
| | - Zhihua Huang
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Jiangxi Province Key Laboratory of Pharmacology of Traditional Chinese Medicine, Ganzhou Key Laboratory of Neuroinflammation Research, School of Basic Medicine Sciences, Gannan Medical University, Ganzhou 341000, China; School of Basic Medical Sciences, China Medical University, Shengyang 110122, China.
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Shankar A, Sharma A, Buch C, Chilton RJ. The evolving role of GLP-1 agonists in ischemic stroke prevention in diabetic patients. Cardiovasc Endocrinol Metab 2024; 13:e00308. [PMID: 39148946 PMCID: PMC11326472 DOI: 10.1097/xce.0000000000000308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 07/01/2024] [Indexed: 08/17/2024]
Affiliation(s)
- Aditi Shankar
- Division of Cardiology, Department of Medicine, University of Texas Health San Antonio, San Antonio, Texas, USA
| | - Aditi Sharma
- Division of Cardiology, Department of Medicine, University of Texas Health San Antonio, San Antonio, Texas, USA
| | - Chirag Buch
- Division of Cardiology, Department of Medicine, University of Texas Health San Antonio, San Antonio, Texas, USA
| | - Robert J Chilton
- Division of Cardiology, Department of Medicine, University of Texas Health San Antonio, San Antonio, Texas, USA
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Chen YY, Gong ZC, Zhang MM, Huang ZH. Brain-Targeting Emodin Mitigates Ischemic Stroke via Inhibiting AQP4-Mediated Swelling and Neuroinflammation. Transl Stroke Res 2024; 15:818-830. [PMID: 37380800 DOI: 10.1007/s12975-023-01170-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 05/26/2023] [Accepted: 06/20/2023] [Indexed: 06/30/2023]
Abstract
Failure to achieve target-specific delivery to ischemic brain sites has hampered the clinical efficacy of newly developed therapies for ischemic stroke. Emodin, an active ingredient isolated from traditional Chinese medicine, has been indicated to alleviate ischemic stroke; however, the underlying mechanism remains unclear. In this study, we aimed to achieve brain-targeted delivery of emodin to maximize its therapeutic efficacy and elucidate the mechanisms by which emodin alleviates ischemic stroke. A polyethylene glycol (PEG)/cyclic Arg-Gly-Asp (cRGD)-modified liposome was used to encapsulate emodin. TTC, HE, Nissl staining, and immunofluorescence staining were employed to evaluate the therapeutic efficacy of brain-targeting emodin in MCAO and OGD/R models. Inflammatory cytokine levels were determined using ELISA. Immunoprecipitation, immunoblotting, and RT-qPCR were utilized for clarifying the changes in key downstream signaling. Lentivirus-mediated gene restoration was employed to verify the core effector of emodin for relieving ischemic stroke. Encapsulating emodin in a PEG/cRGD-modified liposome enhanced its accumulation in the infarct region and substantially raised its therapeutic efficacy. Furthermore, we demonstrated that AQP4, the most abundant water transporter subunit expressed in astrocytes, plays a crucial role in mediating the mechanisms by which emodin inhibits astrocyte swelling, neuroinflammatory blood-brain barrier (BBB) breakdown in vivo and in vitro, and brain edema in general. Our study unveiled the critical target of emodin responsible for alleviating ischemic stroke and a localizable drug delivery vehicle in the therapeutic strategy for ischemic stroke and other brain injuries.
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Affiliation(s)
- Yan-Yan Chen
- Wuxi Cancer Institute, and Wuxi Institute of Integrated Chinese and Western Medicine, Affiliated Hospital of Jiangnan University, Wuxi, 214062, Jiangsu, China.
- Key Laboratory of Shaanxi Administration of Traditional Chinese Medicine for TCM Compatibility, Shaanxi University of Chinese Medicine, Xi'an, 712046, Shaanxi, China.
| | - Zhi-Cheng Gong
- Wuxi Cancer Institute, and Wuxi Institute of Integrated Chinese and Western Medicine, Affiliated Hospital of Jiangnan University, Wuxi, 214062, Jiangsu, China
| | - Mei-Mei Zhang
- Key Laboratory of Shaanxi Administration of Traditional Chinese Medicine for TCM Compatibility, Shaanxi University of Chinese Medicine, Xi'an, 712046, Shaanxi, China
| | - Zhao-Hui Huang
- Wuxi Cancer Institute, and Wuxi Institute of Integrated Chinese and Western Medicine, Affiliated Hospital of Jiangnan University, Wuxi, 214062, Jiangsu, China.
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Xu Q, Liang R, Gao J, Fan Y, Dong J, Wang L, Zheng C, Yang J, Ming D. rTMS Ameliorates time-varying depression and social behaviors in stimulated space complex environment associated with VEGF signaling. LIFE SCIENCES IN SPACE RESEARCH 2024; 42:17-26. [PMID: 39067986 DOI: 10.1016/j.lssr.2024.04.001] [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: 01/22/2024] [Revised: 03/27/2024] [Accepted: 04/03/2024] [Indexed: 07/30/2024]
Abstract
Studies have indicated that medium- to long-duration spaceflight may adversely affect astronauts' emotional and social functioning. Emotion modulation can significantly impact astronauts' well-being, performance, mission safety and success. However, with the increase in flight time, the potential alterations in emotional and social performance during spaceflight and their underlying mechanisms remain to be investigated, and targeted therapeutic and preventive interventions have yet to be identified. We evaluated the changes of emotional and social functions in mice with the extension of the time in simulated space complex environment (SSCE), and simultaneously monitored changes in brain tissue of vascular endothelial growth factor (VEGF), matrix metalloproteinase-9 (MMP-9), and inflammation-related factors. Furthermore, we assessed the regulatory role of repetitive transcranial magnetic stimulation (rTMS) in mood and socialization with the extension of the time in SSCE, as well as examining alterations of VEGF signaling in the medial prefrontal cortex (mPFC). Our findings revealed that mice exposed to SSCE for 7 days exhibited depressive-like behaviors, with these changes persisting throughout SSCE period. In addition, 14 days of rTMS treatment significantly ameliorated SSCE-induced emotional and social dysfunction, potentially through modulation of the level of VEGF signaling in mPFC. These results indicates that emotional and social disorders increase with the extension of SSCE time, and rTMS can improve the performance, which may be related to VEGF signaling. This study offers insights into potential pattern of change over time for mental health issues in astronauts. Further analysis revealed that rTMS modulates emotional and social dysfunction during SSCE exposure, with its mechanism potentially being associated with VEGF signaling.
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Affiliation(s)
- Qing Xu
- Medical School, Faculty of Medicine, Tianjin University, Tianjin 300072, China
| | - Rong Liang
- Medical School, Faculty of Medicine, Tianjin University, Tianjin 300072, China
| | - Jing Gao
- Medical School, Faculty of Medicine, Tianjin University, Tianjin 300072, China
| | - Yueyue Fan
- Medical School, Faculty of Medicine, Tianjin University, Tianjin 300072, China
| | - Jinrui Dong
- Medical School, Faculty of Medicine, Tianjin University, Tianjin 300072, China
| | - Ling Wang
- Medical School, Faculty of Medicine, Tianjin University, Tianjin 300072, China; Brain-Computer Interaction and Human-Machine Fusion Haihe Laboratory, Tianjin University, Tianjin 300072, China; Tianjin Key Laboratory of Brain Science and Neural Engineering, Tianjin University, Tianjin 300072, China
| | - Chenguang Zheng
- Medical School, Faculty of Medicine, Tianjin University, Tianjin 300072, China; Brain-Computer Interaction and Human-Machine Fusion Haihe Laboratory, Tianjin University, Tianjin 300072, China; Tianjin Key Laboratory of Brain Science and Neural Engineering, Tianjin University, Tianjin 300072, China
| | - Jiajia Yang
- Medical School, Faculty of Medicine, Tianjin University, Tianjin 300072, China; Brain-Computer Interaction and Human-Machine Fusion Haihe Laboratory, Tianjin University, Tianjin 300072, China; Tianjin Key Laboratory of Brain Science and Neural Engineering, Tianjin University, Tianjin 300072, China.
| | - Dong Ming
- Medical School, Faculty of Medicine, Tianjin University, Tianjin 300072, China; Brain-Computer Interaction and Human-Machine Fusion Haihe Laboratory, Tianjin University, Tianjin 300072, China; Tianjin Key Laboratory of Brain Science and Neural Engineering, Tianjin University, Tianjin 300072, China
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Zhang Q, Lu C, Fan W, Yin Y. Exploring the molecular mechanism of sepsis-associated encephalopathy by integrated analysis of multiple datasets. Cytokine 2024; 180:156609. [PMID: 38781871 DOI: 10.1016/j.cyto.2024.156609] [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: 01/21/2024] [Accepted: 04/06/2024] [Indexed: 05/25/2024]
Abstract
BACKGROUND We aim to deal with the Hub-genes and signalling pathways connected with Sepsis-associated encephalopathy (SAE). METHODS The raw datasets were acquired from the Gene Expression Omnibus (GEO) database (GSE198861 and GSE167610). R software filtered the differentially expressed genes (DEGs) for hub genes exploited for Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis. Hub genes were identified from the intersection of DEGs via protein-protein interaction (PPI) network. And the single-cell dataset (GSE101901) was used to authenticate where the hub genes express in hippocampus cells. Cell-cell interaction analysis and Gene Set Variation Analysis (GSVA) analysis of the whole transcriptome validated the interactions between hippocampal cells. RESULTS A total of 161 DEGs were revealed in GSE198861 and GSE167610 datasets. Biological function analysis showed that the DEGs were primarily involved in the phagosome pathway and significantly enriched. The PPI network extracted 10 Hub genes. The M2 Macrophage cell decreased significantly during the acute period, and the hub gene may play a role in this biological process. The hippocampal variation pathway was associated with the MAPK signaling pathway. CONCLUSION Hub genes (Pecam1, Cdh5, Fcgr, C1qa, Vwf, Vegfa, C1qb, C1qc, Fcgr4 and Fcgr2b) may paticipate in the biological process of SAE.
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Affiliation(s)
- Qiulei Zhang
- Department of Emergency and Critical Care Medicine, The Second Hospital of Jilin University, NO.218 Ziqiang Street, Changchun 130041, China
| | - Chang Lu
- Department of Anesthesiology, The Second Hospital of Jilin University, NO.218 Ziqiang Street, Changchun 130041, China
| | - Weixuan Fan
- Department of Emergency and Critical Care Medicine, The Second Hospital of Jilin University, NO.218 Ziqiang Street, Changchun 130041, China
| | - Yongjie Yin
- Department of Emergency and Critical Care Medicine, The Second Hospital of Jilin University, NO.218 Ziqiang Street, Changchun 130041, China.
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de Paiva IHR, da Silva RS, Mendonça IP, de Souza JRB, Peixoto CA. Semaglutide Attenuates Anxious and Depressive-Like Behaviors and Reverses the Cognitive Impairment in a Type 2 Diabetes Mellitus Mouse Model Via the Microbiota-Gut-Brain Axis. J Neuroimmune Pharmacol 2024; 19:36. [PMID: 39042202 DOI: 10.1007/s11481-024-10142-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: 08/09/2023] [Accepted: 07/14/2024] [Indexed: 07/24/2024]
Abstract
Newly conducted research suggests that metabolic disorders, like diabetes and obesity, play a significant role as risk factors for psychiatric disorders. This connection presents a potential avenue for creating novel antidepressant medications by repurposing drugs originally developed to address antidiabetic conditions. Earlier investigations have shown that GLP-1 (Glucagon-like Peptide-1) analogs exhibit neuroprotective qualities in various models of neurological diseases, encompassing conditions such as Alzheimer's disease, Parkinson's disease, and stroke. Moreover, GLP-1 analogs have demonstrated the capability to enhance neurogenesis, a process recognized for its significance in memory formation and the cognitive and emotional aspects of information processing. Nonetheless, whether semaglutide holds efficacy as both an antidepressant and anxiolytic agent remains uncertain. To address this, our study focused on a mouse model of depression linked to type 2 diabetes induced by a High Fat Diet (HFD). In this model, we administered semaglutide (0.05 mg/Kg intraperitoneally) on a weekly basis to evaluate its potential as a therapeutic option for depression and anxiety. Diabetic mice had higher blood glucose, lipidic profile, and insulin resistance. Moreover, mice fed HFD showed higher serum interleukin (IL)-1β and lipopolysaccharide (LPS) associated with impaired humor and cognition. The analysis of behavioral responses revealed that the administration of semaglutide effectively mitigated depressive- and anxiety-like behaviors, concurrently demonstrating an enhancement in cognitive function. Additionally, semaglutide treatment protected synaptic plasticity and reversed the hippocampal neuroinflammation induced by HFD fed, improving activation of the insulin pathway, demonstrating the protective effects of semaglutide. We also found that semaglutide treatment decreased astrogliosis and microgliosis in the dentate gyrus region of the hippocampus. In addition, semaglutide prevented the DM2-induced impairments of pro-opiomelanocortin (POMC), and G-protein-coupled receptor 43 (GPR43) and simultaneously increased the NeuN + and Glucagon-like Peptide-1 receptor (GLP-1R+) neurons in the hippocampus. Our data also showed that semaglutide increased the serotonin (5-HT) and serotonin transporter (5-HTT) and glutamatergic receptors in the hippocampus. At last, semaglutide changed the gut microbiota profile (increasing Bacterioidetes, Bacteroides acidifaciens, and Blautia coccoides) and decreased leaky gut, improving the gut-brain axis. Taken together, semaglutide has the potential to act as a therapeutic tool for depression and anxiety.
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MESH Headings
- Animals
- Glucagon-Like Peptides/pharmacology
- Diabetes Mellitus, Type 2/complications
- Diabetes Mellitus, Type 2/drug therapy
- Diabetes Mellitus, Type 2/psychology
- Diabetes Mellitus, Type 2/metabolism
- Mice
- Cognitive Dysfunction/drug therapy
- Cognitive Dysfunction/prevention & control
- Cognitive Dysfunction/etiology
- Cognitive Dysfunction/metabolism
- Depression/drug therapy
- Depression/psychology
- Depression/metabolism
- Male
- Anxiety/drug therapy
- Anxiety/psychology
- Anxiety/etiology
- Gastrointestinal Microbiome/drug effects
- Mice, Inbred C57BL
- Brain-Gut Axis/drug effects
- Diabetes Mellitus, Experimental/complications
- Diabetes Mellitus, Experimental/drug therapy
- Diabetes Mellitus, Experimental/psychology
- Diabetes Mellitus, Experimental/metabolism
- Disease Models, Animal
- Antidepressive Agents/pharmacology
- Antidepressive Agents/therapeutic use
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Affiliation(s)
- Igor Henrique Rodrigues de Paiva
- Laboratory of Ultrastructure, Aggeu Magalhães Institute (IAM), Av. Moraes Rego s/n, Recife CEP, PE, 50670-420, Brazil.
- Postgraduate Program in Biological Sciences/Center of Biosciences, Federal University of Pernambuco (UFPE), Recife, PE, Brazil.
| | - Rodrigo Soares da Silva
- Laboratory of Ultrastructure, Aggeu Magalhães Institute (IAM), Av. Moraes Rego s/n, Recife CEP, PE, 50670-420, Brazil
- Postgraduate Program in Biological Sciences/Center of Biosciences, Federal University of Pernambuco (UFPE), Recife, PE, Brazil
| | - Ingrid Prata Mendonça
- Laboratory of Ultrastructure, Aggeu Magalhães Institute (IAM), Av. Moraes Rego s/n, Recife CEP, PE, 50670-420, Brazil
- Postgraduate Program in Biological Sciences/Center of Biosciences, Federal University of Pernambuco (UFPE), Recife, PE, Brazil
| | | | - Christina Alves Peixoto
- Laboratory of Ultrastructure, Aggeu Magalhães Institute (IAM), Av. Moraes Rego s/n, Recife CEP, PE, 50670-420, Brazil.
- Institute of Science and Technology on Neuroimmunomodulation (INCT-NIM), Recife, Brazil.
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10
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Liu Z, Chen H, Ning X, Li J, Pan L. Oxymatrine and Gut Microbiota Modulation: A Potential Therapeutic Strategy for Bone Cancer Pain Management. THE JOURNAL OF PAIN 2024:104588. [PMID: 38844152 DOI: 10.1016/j.jpain.2024.104588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 05/11/2024] [Accepted: 05/30/2024] [Indexed: 08/09/2024]
Abstract
Chronic pain often coincides with changes in gut microbiota composition. Yet, the role of gut microbiota in bone cancer pain (BCP) is still not fully understood. This study investigated the role of gut microbiota in BCP and the effect of oxymatrine (OMT) on gut microbiota in BCP. A BCP mice model was developed to assess gut microbiota composition, serum and brain tissue butyric acid levels, and blood-brain barrier (BBB) permeability. Microbiota transplantation was used to restore gut microbiota, and the effect of Clostridium butyricum or sodium butyrate (NaB) supplementation on pain-related behaviors and BBB integrity was evaluated. The potential benefits of OMT on gut microbiota composition, peroxisome proliferator-activated receptor gamma (PPARγ)/cyclooxygenase-2 (COX-2) signaling, BBB integrity, and pain-related behaviors were also explored. BCP significantly altered gut microbiota composition and reduced serum and brain tissue butyric acid levels. Additionally, BBB permeability increased considerably in the BCP group compared with sham and control mice. Microbiota transplantation, as well as C butyricum or NaB supplementation, ameliorated pain-related behaviors and BBB integrity; the supplementation of C butyricum or NaB boosted brain-tight-junction protein expression, potentially through modulating PPARγ/COX-2 signaling. OMT influenced gut microbiota composition and regulated PPARγ/COX-2 signaling in the BCP model, improving pain-related behaviors and BBB integrity. BCP affects gut microbiota composition and butyric acid levels. Modulating gut microbiota and butyric acid levels through transplantation or supplementation may alleviate BCP. OMT shows potential as a treatment by altering gut microbiota composition and regulating PPARγ/COX-2 signaling. These findings provide new insights into BCP pathophysiology and possible treatments. PERSPECTIVE: This study explores the impact of gut microbiota on BCP. Microbiota transplantation alleviates BCP and enhances BBB integrity. Also, C butyricum or NaB improves BBB via PPARγ/COX-2. OMT, a BCP treatment, modifies microbiota by regulating PPARγ/COX-2, in turn improving pain and BBB integrity. These findings suggest a therapeutic approach, emphasizing clinical relevance in targeting gut microbiota and restoring butyric acid levels.
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Affiliation(s)
- Zhen Liu
- Department of Anesthesiology, Guangxi Medical University Cancer Hospital, Nanning, China; Guangxi Engineering Research Center for Tissue & Organ Injury and Repair Medicine, Nanning, China; Guangxi Health Commission Key Laboratory of Basic Science and Prevention of Perioperative Organ Disfunction, Nanning, China
| | - Haishao Chen
- Department of Anesthesiology, Guangxi Medical University Cancer Hospital, Nanning, China; Guangxi Engineering Research Center for Tissue & Organ Injury and Repair Medicine, Nanning, China; Guangxi Health Commission Key Laboratory of Basic Science and Prevention of Perioperative Organ Disfunction, Nanning, China
| | - Xing Ning
- Department of Anesthesiology, Guangxi Medical University Cancer Hospital, Nanning, China; Guangxi Engineering Research Center for Tissue & Organ Injury and Repair Medicine, Nanning, China; Guangxi Health Commission Key Laboratory of Basic Science and Prevention of Perioperative Organ Disfunction, Nanning, China
| | - Junda Li
- Department of Anesthesiology, Guangxi Medical University Cancer Hospital, Nanning, China; Guangxi Engineering Research Center for Tissue & Organ Injury and Repair Medicine, Nanning, China; Guangxi Health Commission Key Laboratory of Basic Science and Prevention of Perioperative Organ Disfunction, Nanning, China
| | - Linghui Pan
- Department of Anesthesiology, Guangxi Medical University Cancer Hospital, Nanning, China; Guangxi Engineering Research Center for Tissue & Organ Injury and Repair Medicine, Nanning, China; Guangxi Health Commission Key Laboratory of Basic Science and Prevention of Perioperative Organ Disfunction, Nanning, China.
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11
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Pan Z, Yu X, Wang W, Shen K, Chen J, Zhang Y, Huang R. Sestrin2 remedies neuroinflammatory response by inhibiting A1 astrocyte conversion via autophagy. J Neurochem 2024. [PMID: 38761015 DOI: 10.1111/jnc.16126] [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: 12/15/2023] [Revised: 04/22/2024] [Accepted: 04/26/2024] [Indexed: 05/20/2024]
Abstract
Most central nervous diseases are accompanied by astrocyte activation. Autophagy, an important pathway for cells to protect themselves and maintain homeostasis, is widely involved in regulation of astrocyte activation. Reactive astrocytes may play a protective or harmful role in different diseases due to different phenotypes of astrocytes. It is an urgent task to clarify the formation mechanisms of inflammatory astrocyte phenotype, A1 astrocytes. Sestrin2 is a highly conserved protein that can be induced under a variety of stress conditions as a potential protective role in oxidative damage process. However, whether Sestrin2 can affect autophagy and involve in A1 astrocyte conversion is still uncovered. In this study, we reported that Sestrin2 and autophagy were significantly induced in mouse hippocampus after multiple intraperitoneal injections of lipopolysaccharide, with the elevation of A1 astrocyte conversion and inflammatory mediators. Knockdown Sestrin2 in C8-D1A astrocytes promoted the levels of A1 astrocyte marker C3 mRNA and inflammatory factors, which was rescued by autophagy inducer rapamycin. Overexpression of Sestrin2 in C8-D1A astrocytes attenuated A1 astrocyte conversion and reduced inflammatory factor levels via abundant autophagy. Moreover, Sestrin2 overexpression improved mitochondrial structure and morphology. These results suggest that Sestrin2 can suppress neuroinflammation by inhibiting A1 astrocyte conversion via autophagy, which is a potential drug target for treating neuroinflammation.
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Affiliation(s)
- Zhenguo Pan
- Stroke Center and Department of Neurology, Department of Pharmacy, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China
- Department of Neurology, People's Hospital of Xiangshui County, Yancheng, China
| | - Xiaoyu Yu
- Wuxi School of Medicine, Jiangnan University, Wuxi, China
| | - Weiwei Wang
- Department of Pathology, Qingdao Eighth People's Hospital, Qingdao, China
| | - Kai Shen
- Stroke Center and Department of Neurology, Department of Pharmacy, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China
| | - Jianwei Chen
- Interventional Medicine Center, Xi'an People's Hospital, Xi'an, China
| | - Yunfeng Zhang
- Stroke Center and Department of Neurology, Department of Pharmacy, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China
| | - Rongrong Huang
- Stroke Center and Department of Neurology, Department of Pharmacy, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China
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12
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Grannes H, Ueland T, Simeone P, Liani R, Guagnano MT, Aukrust P, Michelsen AE, Birkeland K, di Castelnuovo A, Cipollone F, Consoli A, Halvorsen B, Gregersen I, Santilli F. Liraglutide and not lifestyle intervention reduces soluble CD163 after comparable weight loss in obese participants with prediabetes or type 2 diabetes mellitus. Cardiovasc Diabetol 2024; 23:146. [PMID: 38685051 PMCID: PMC11059692 DOI: 10.1186/s12933-024-02237-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 04/16/2024] [Indexed: 05/02/2024] Open
Abstract
BACKGROUND The GLP-1 receptor agonist liraglutide is used to treat hyperglycemia in type 2 diabetes but is also known to induce weight loss, preserve the beta cell and reduce cardiovascular risk. The mechanisms underlying these effects are however still not completely known. Herein we explore the effect of liraglutide on markers of immune cell activity in a population of obese individuals with prediabetes or newly diagnosed type 2 diabetes mellitus. METHOD Plasma levels of the monocyte/macrophage markers, soluble (s)CD163 and sCD14, the neutrophil markers myeloperoxidase (MPO) and neutrophil gelatinase-associated lipocalin (NGAL),the T-cell markers sCD25 and T-cell immunoglobulin mucin domain-3 (sTIM-3) and the inflammatory marker TNF superfamily (TNFSF) member 14 (LIGHT/TNFSF14) were measured by enzyme-linked immunosorbent assays in obese individuals with prediabetes or diabetes diagnosed within the last 12 months, prior to and after comparable weight loss achieved with lifestyle changes (n = 20) or liraglutide treatment (n = 20), and in healthy subjects (n = 13). RESULTS At baseline, plasma levels of the macrophage marker sCD163, and the inflammatory marker LIGHT were higher in cases as compared to controls. Plasma levels of sCD14, NGAL, sTIM-3 and sCD25 did not differ at baseline between patients and controls. After weight reduction following lifestyle intervention or liraglutide treatment, sCD163 decreased significantly in the liraglutide group vs. lifestyle (between-group difference p = 0.023, adjusted for visceral adipose tissue and triglycerides basal values). MPO and LIGHT decreased significantly only in the liraglutide group (between group difference not significant). Plasma levels of MPO and in particular sCD163 correlated with markers of metabolic dysfunction and inflammation. After weight loss, only sCD163 showed a trend for decreased levels during OGTT, both in the whole cohort as in those of liraglutide vs lifestyle group. CONCLUSION Weight loss following treatment with liraglutide was associated with reduced circulating levels of sCD163 when compared to the same extent of weight loss after lifestyle changes. This might contribute to reduced cardiometabolic risk in individuals receiving treatment with liraglutide.
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Affiliation(s)
- Helene Grannes
- Research Institute for Internal Medicine, Oslo University Hospital Rikshospitalet, Sognsvannsveien 20, 0372, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Thor Ueland
- Research Institute for Internal Medicine, Oslo University Hospital Rikshospitalet, Sognsvannsveien 20, 0372, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
- Thrombosis Research and Expertise Centre, University of Tromsø, Tromsø, Norway
| | - Paola Simeone
- Department of Medicine and Aging, and Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Rossella Liani
- Department of Medicine and Aging, and Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Maria Teresa Guagnano
- Department of Medicine and Aging, and Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Pål Aukrust
- Research Institute for Internal Medicine, Oslo University Hospital Rikshospitalet, Sognsvannsveien 20, 0372, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
- Section of Clinical Immunology and Infectious Diseases, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Annika E Michelsen
- Research Institute for Internal Medicine, Oslo University Hospital Rikshospitalet, Sognsvannsveien 20, 0372, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Kåre Birkeland
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
- Department of Endocrinology, Morbid Obesity and Preventive Medicine, Oslo University Hospital, Oslo, Norway
| | | | - Francesco Cipollone
- Department of Medicine and Aging, and Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Agostino Consoli
- Department of Medicine and Aging, and Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Bente Halvorsen
- Research Institute for Internal Medicine, Oslo University Hospital Rikshospitalet, Sognsvannsveien 20, 0372, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Ida Gregersen
- Research Institute for Internal Medicine, Oslo University Hospital Rikshospitalet, Sognsvannsveien 20, 0372, Oslo, Norway.
| | - Francesca Santilli
- Department of Medicine and Aging, and Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy.
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13
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Zhang LY, Hu YY, Liu XY, Wang XY, Li SC, Zhang JG, Xian XH, Li WB, Zhang M. The Role of Astrocytic Mitochondria in the Pathogenesis of Brain Ischemia. Mol Neurobiol 2024; 61:2270-2282. [PMID: 37870679 DOI: 10.1007/s12035-023-03714-z] [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: 06/23/2023] [Accepted: 10/03/2023] [Indexed: 10/24/2023]
Abstract
The morbidity rate of ischemic stroke is increasing annually with the growing aging population in China. Astrocytes are ubiquitous glial cells in the brain and play a crucial role in supporting neuronal function and metabolism. Increasing evidence shows that the impairment or loss of astrocytes contributes to neuronal dysfunction during cerebral ischemic injury. The mitochondrion is increasingly recognized as a key player in regulating astrocyte function. Changes in astrocytic mitochondrial function appear to be closely linked to the homeostasis imbalance defects in glutamate metabolism, Ca2+ regulation, fatty acid metabolism, reactive oxygen species, inflammation, and copper regulation. Here, we discuss the role of astrocytic mitochondria in the pathogenesis of brain ischemic injury and their potential as a therapeutic target.
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Affiliation(s)
- Ling-Yan Zhang
- Department of Pathophysiology, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang, 050017, Hebei, People's Republic of China
- Hebei Key Laboratory of Critical Disease Mechanism and Intervention, Shijiazhuang, 050017, People's Republic of China
| | - Yu-Yan Hu
- Department of Pathophysiology, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang, 050017, Hebei, People's Republic of China
- Hebei Key Laboratory of Critical Disease Mechanism and Intervention, Shijiazhuang, 050017, People's Republic of China
| | - Xi-Yun Liu
- Department of Pathophysiology, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang, 050017, Hebei, People's Republic of China
| | - Xiao-Yu Wang
- Department of Pathophysiology, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang, 050017, Hebei, People's Republic of China
| | - Shi-Chao Li
- Department of Pathophysiology, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang, 050017, Hebei, People's Republic of China
| | - Jing-Ge Zhang
- Department of Pathophysiology, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang, 050017, Hebei, People's Republic of China
- Hebei Key Laboratory of Critical Disease Mechanism and Intervention, Shijiazhuang, 050017, People's Republic of China
| | - Xiao-Hui Xian
- Department of Pathophysiology, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang, 050017, Hebei, People's Republic of China
- Hebei Key Laboratory of Critical Disease Mechanism and Intervention, Shijiazhuang, 050017, People's Republic of China
| | - Wen-Bin Li
- Department of Pathophysiology, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang, 050017, Hebei, People's Republic of China
- Hebei Key Laboratory of Critical Disease Mechanism and Intervention, Shijiazhuang, 050017, People's Republic of China
| | - Min Zhang
- Department of Pathophysiology, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang, 050017, Hebei, People's Republic of China.
- Hebei Key Laboratory of Critical Disease Mechanism and Intervention, Shijiazhuang, 050017, People's Republic of China.
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14
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Wang D, Wang Y, Shi J, Jiang W, Huang W, Chen K, Wang X, Zhang G, Li Y, Cao C, Lee KY, Lin L. Edaravone dexborneol alleviates ischemic injury and neuroinflammation by modulating microglial and astrocyte polarization while inhibiting leukocyte infiltration. Int Immunopharmacol 2024; 130:111700. [PMID: 38382262 DOI: 10.1016/j.intimp.2024.111700] [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: 11/09/2023] [Revised: 02/11/2024] [Accepted: 02/12/2024] [Indexed: 02/23/2024]
Abstract
Poststroke inflammation is essential in the mechanism of secondary injury, and it is orchestrated by resident microglia, astrocytes, and circulating immune cells. Edaravone dexborneol (EDB) is a combination of edaravone and borneol that has been identified as a clinical protectant for stroke management. In this study, we verified the anti-inflammatory effect of EDB in the mouse model of ischemia and investigated its modulatory action on inflammation-related cells. C57BL/6 male mice, which had the transient middle cerebral artery occlusion (tMCAO), were treated (i.p.) with EDB (15 mg/kg). EDB administration significantly reduced the brain infarction and improved the sensorimotor function after stroke. And EDB alleviated the neuroinflammation by restraining the polarization of microglia/macrophages and astrocyte toward proinflammatory phenotype and inhibiting the production of proinflammatory cytokines (such as IL-1β, TNF-α, and IL-6) and chemokines (including MCP-1 and CXCL1). Furthermore, EDB ameliorated the MCAO-induced impairment of Blood-brain barrier (BBB) by suppressing the degradation of tight junction protein and attenuated the accumulation of peripheral leukocytes in the ischemic brain. Additionally, systemic EDB administration inhibited the macrophage phenotypic shift toward the M1 phenotype and the macrophage-dependent inflammatory response in the spleen and blood. Collectively, EDB protects against ischemic stroke injury by inhibiting the proinflammatory activation of microglia/macrophages and astrocytes and through reduction by invasion of circulating immune cells, which reduces central and peripheral inflammation following stroke.
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Affiliation(s)
- Dongxue Wang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China; College of Pharmacy and Research Institute of Pharmaceutical Sciences, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Yutao Wang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Junfeng Shi
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Wenyi Jiang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Wenting Huang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Keyang Chen
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Xue Wang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Gongchun Zhang
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Yuankuan Li
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Chengkun Cao
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.
| | - Kwang-Youl Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Chonnam National University, Gwangju 61186, Republic of Korea.
| | - Li Lin
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.
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15
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Vázquez-Liébanas E, Mocci G, Li W, Laviña B, Reddy A, O'Connor C, Hudson N, Elbeck Z, Nikoloudis I, Gaengel K, Vanlandewijck M, Campbell M, Betsholtz C, Mäe MA. Mosaic deletion of claudin-5 reveals rapid non-cell-autonomous consequences of blood-brain barrier leakage. Cell Rep 2024; 43:113911. [PMID: 38446668 DOI: 10.1016/j.celrep.2024.113911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 12/19/2023] [Accepted: 02/16/2024] [Indexed: 03/08/2024] Open
Abstract
Claudin-5 (CLDN5) is an endothelial tight junction protein essential for blood-brain barrier (BBB) formation. Abnormal CLDN5 expression is common in brain disease, and knockdown of Cldn5 at the BBB has been proposed to facilitate drug delivery to the brain. To study the consequences of CLDN5 loss in the mature brain, we induced mosaic endothelial-specific Cldn5 gene ablation in adult mice (Cldn5iECKO). These mice displayed increased BBB permeability to tracers up to 10 kDa in size from 6 days post induction (dpi) and ensuing lethality from 10 dpi. Single-cell RNA sequencing at 11 dpi revealed profound transcriptomic differences in brain endothelial cells regardless of their Cldn5 status in mosaic mice, suggesting major non-cell-autonomous responses. Reactive microglia and astrocytes suggested rapid cellular responses to BBB leakage. Our study demonstrates a critical role for CLDN5 in the adult BBB and provides molecular insight into the consequences and risks associated with CLDN5 inhibition.
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Affiliation(s)
- Elisa Vázquez-Liébanas
- Department of Immunology, Genetics, and Pathology, Rudbeck Laboratory, Uppsala University, 751 85 Uppsala, Sweden
| | - Giuseppe Mocci
- Single Cell Core Facility of Flemingsberg Campus (SICOF), Karolinska Institute, 14157 Huddinge, Sweden
| | - Weihan Li
- Department of Immunology, Genetics, and Pathology, Rudbeck Laboratory, Uppsala University, 751 85 Uppsala, Sweden
| | - Bàrbara Laviña
- Department of Immunology, Genetics, and Pathology, Rudbeck Laboratory, Uppsala University, 751 85 Uppsala, Sweden
| | - Avril Reddy
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin 2, Ireland
| | - Claire O'Connor
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin 2, Ireland
| | - Natalie Hudson
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin 2, Ireland
| | - Zaher Elbeck
- Department of Immunology, Genetics, and Pathology, Rudbeck Laboratory, Uppsala University, 751 85 Uppsala, Sweden
| | - Ioannis Nikoloudis
- Department of Immunology, Genetics, and Pathology, Rudbeck Laboratory, Uppsala University, 751 85 Uppsala, Sweden
| | - Konstantin Gaengel
- Department of Immunology, Genetics, and Pathology, Rudbeck Laboratory, Uppsala University, 751 85 Uppsala, Sweden
| | - Michael Vanlandewijck
- Department of Immunology, Genetics, and Pathology, Rudbeck Laboratory, Uppsala University, 751 85 Uppsala, Sweden; Single Cell Core Facility of Flemingsberg Campus (SICOF), Karolinska Institute, 14157 Huddinge, Sweden; Department of Medicine, Karolinska Institute, 14157 Huddinge, Sweden
| | - Matthew Campbell
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin 2, Ireland
| | - Christer Betsholtz
- Department of Immunology, Genetics, and Pathology, Rudbeck Laboratory, Uppsala University, 751 85 Uppsala, Sweden; Department of Medicine, Karolinska Institute, 14157 Huddinge, Sweden
| | - Maarja Andaloussi Mäe
- Department of Immunology, Genetics, and Pathology, Rudbeck Laboratory, Uppsala University, 751 85 Uppsala, Sweden.
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16
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Noguchi T, Katoh H, Nomura S, Okada K, Watanabe M. The GLP-1 receptor agonist exenatide improves recovery from spinal cord injury by inducing macrophage polarization toward the M2 phenotype. Front Neurosci 2024; 18:1342944. [PMID: 38426018 PMCID: PMC10902060 DOI: 10.3389/fnins.2024.1342944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 01/30/2024] [Indexed: 03/02/2024] Open
Abstract
Although a wide variety of mechanisms take part in the secondary injury phase of spinal cord injury (SCI), inflammation is the most important factor implicated in the sequelae after SCI. Being central to the inflammation reaction, macrophages and their polarization are a topic that has garnered wide interest in the studies of SCI secondary injury. The glucagon-like peptide 1 (GLP-1) receptor agonist exenatide has been shown to enhance the endoplasmic reticulum stress response and improve motor function recovery after spinal cord injury (SCI). Since exenatide has also been reported to induce the production of M2 cells in models of cerebral infarction and neurodegenerative diseases, this study was conducted to examine the effects of exenatide administration on the inflammation process that ensues after spinal cord injury. In a rat contusion model of spinal cord injury, the exenatide group received a subcutaneous injection of 10 μg exenatide immediately after injury while those in the control group received 1 mL of phosphate-buffered saline. Quantitative RT-PCR and immunohistochemical staining were used to evaluate the effects of exenatide administration on the macrophages infiltrating the injured spinal cord, especially with regard to macrophage M1 and M2 profiles. The changes in hind limb motor function were assessed based on Basso, Beattie, Bresnahan locomotor rating scale (BBB scale) scores. The improvement in BBB scale scores was significantly higher in the exenatide group from day 7 after injury and onwards. Quantitative RT-PCR revealed an increase in the expression of M2 markers and anti-inflammatory interleukins in the exenatide group that was accompanied by a decrease in the expression of M1 markers and inflammatory cytokines. Immunohistochemical staining showed no significant difference in M1 macrophage numbers between the two groups, but a significantly higher number of M2 macrophages was observed in the exenatide group on day 3 after injury. Our findings suggest that exenatide administration promoted the number of M2-phenotype macrophages after SCI, which may have led to the observed improvement in hind limb motor function in a rat model of SCI.
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Affiliation(s)
| | - Hiroyuki Katoh
- Department of Orthopaedic Surgery, Surgical Science, Tokai University School of Medicine, Isehara, Japan
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17
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Wang HJ, Zhang LB, Sun SP, Yan QT, Gao ZQ, Fu FM, Qu MH. Duodenal-jejunal bypass improves hypothalamic oxidative stress and inflammation in diabetic rats via glucagon-like peptide 1-mediated Nrf2/HO-1 signaling. World J Diabetes 2024; 15:287-304. [PMID: 38464379 PMCID: PMC10921169 DOI: 10.4239/wjd.v15.i2.287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 12/12/2023] [Accepted: 01/12/2024] [Indexed: 02/04/2024] Open
Abstract
BACKGROUND Type 2 diabetes mellitus (T2DM) is often accompanied by impaired glucose utilization in the brain, leading to oxidative stress, neuronal cell injury and infla-mmation. Previous studies have shown that duodenal jejunal bypass (DJB) surgery significantly improves brain glucose metabolism in T2DM rats, the role and the metabolism of DJB in improving brain oxidative stress and inflammation condition in T2DM rats remain unclear. AIM To investigate the role and metabolism of DJB in improving hypothalamic oxidative stress and inflammation condition in T2DM rats. METHODS A T2DM rat model was induced via a high-glucose and high-fat diet, combined with a low-dose streptozotocin injection. T2DM rats were divided into DJB operation and Sham operation groups. DJB surgical intervention was carried out on T2DM rats. The differential expression of hypothalamic proteins was analyzed using quantitative proteomics analysis. Proteins related to oxidative stress, inflammation, and neuronal injury in the hypothalamus of T2DM rats were analyzed by flow cytometry, quantitative real-time PCR, Western blotting, and immunofluorescence. RESULTS Quantitative proteomics analysis showed significant differences in proteins related to oxidative stress, inflammation, and neuronal injury in the hypothalamus of rats with T2DM-DJB after DJB surgery, compared to the T2DM-Sham groups of rats. Oxidative stress-related proteins (glucagon-like peptide 1 receptor, Nrf2, and HO-1) were significantly increased (P < 0.05) in the hypothalamus of rats with T2DM after DJB surgery. DJB surgery significantly reduced (P < 0.05) hypothalamic inflammation in T2DM rats by inhibiting the activation of NF-κB and decreasing the expression of interleukin (IL)-1β and IL-6. DJB surgery significantly reduced (P < 0.05) the expression of factors related to neuronal injury (glial fibrillary acidic protein and Caspase-3) in the hypothalamus of T2DM rats and upregulated (P < 0.05) the expression of neuroprotective factors (C-fos, Ki67, Bcl-2, and BDNF), thereby reducing hypothalamic injury in T2DM rats. CONCLUSION DJB surgery improve oxidative stress and inflammation in the hypothalamus of T2DM rats and reduce neuronal cell injury by activating the glucagon-like peptide 1 receptor-mediated Nrf2/HO-1 signaling pathway.
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Affiliation(s)
- Huai-Jie Wang
- Translational Medical Center, Weifang Second People's Hospital, Weifang 261041, Shandong Province, China
| | - Li-Bin Zhang
- Department of Endocrinology, Weifang Second People's Hospital, Weifang 261041, Shandong Province, China
| | - Si-Peng Sun
- Translational Medical Center, Weifang Second People's Hospital, Weifang 261041, Shandong Province, China
| | - Qing-Tao Yan
- Department of Pediatric Surgery, Weifang People’s Hospital, Weifang 261041, Shandong Province, China
| | - Zhi-Qin Gao
- School of Bioscience and Technology, Weifang Medical University, Weifang 261053, Shandong Province, China
| | - Fang-Ming Fu
- Department of Endocrinology, Jinan Central Hospital Affiliated to Shandong First Medical University, Jinan 250013, Shandong Province, China
| | - Mei-Hua Qu
- Translational Medical Center, Weifang Second People's Hospital, Weifang 261041, Shandong Province, China
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18
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Yang Q, Zaongo SD, Zhu L, Yan J, Yang J, Ouyang J. The Potential of Clostridium butyricum to Preserve Gut Health, and to Mitigate Non-AIDS Comorbidities in People Living with HIV. Probiotics Antimicrob Proteins 2024:10.1007/s12602-024-10227-1. [PMID: 38336953 DOI: 10.1007/s12602-024-10227-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/02/2024] [Indexed: 02/12/2024]
Abstract
A dramatic reduction in mortality among people living with HIV (PLWH) has been achieved during the modern antiretroviral therapy (ART) era. However, ART does not restore gut barrier function even after long-term viral suppression, allowing microbial products to enter the systemic blood circulation and induce chronic immune activation. In PLWH, a chronic state of systemic inflammation exists and persists, which increases the risk of development of inflammation-associated non-AIDS comorbidities such as metabolic disorders, cardiovascular diseases, and cancer. Clostridium butyricum is a human butyrate-producing symbiont present in the gut microbiome. Convergent evidence has demonstrated favorable effects of C. butyricum for gastrointestinal health, including maintenance of the structural and functional integrity of the gut barrier, inhibition of pathogenic bacteria within the intestine, and reduction of microbial translocation. Moreover, C. butyricum supplementation has been observed to have a positive effect on various inflammation-related diseases such as diabetes, ulcerative colitis, and cancer, which are also recognized as non-AIDS comorbidities associated with epithelial gut damage. There is currently scant published research in the literature, focusing on the influence of C. butyricum in the gut of PLWH. In this hypothesis review, we speculate the use of C. butyricum as a probiotic oral supplementation may well emerge as a potential future synergistic adjunctive strategy in PLWH, in tandem with ART, to restore and consolidate intestinal barrier integrity, repair the leaky gut, prevent microbial translocation from the gut, and reduce both gut and systemic inflammation, with the ultimate objective of decreasing the risk for development of non-AIDS comorbidities in PLWH.
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Affiliation(s)
- Qiyu Yang
- Department of Radiation Oncology, Chongqing University Cancer Hospital & Chongqing Cancer Institute & Chongqing Cancer Hospital, Chongqing, China
| | - Silvere D Zaongo
- Department of Infectious Diseases, Chongqing Public Health Medical Center, Chongqing, China
- Clinical Research Center, Chongqing Public Health Medical Center, Chongqing, China
| | - Lijiao Zhu
- Clinical Research Center, Chongqing Public Health Medical Center, Chongqing, China
| | - Jiangyu Yan
- Clinical Research Center, Chongqing Public Health Medical Center, Chongqing, China
| | - Jiadan Yang
- Department of Pharmacy, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
| | - Jing Ouyang
- Clinical Research Center, Chongqing Public Health Medical Center, Chongqing, China.
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19
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Liu J, Guo Y, Zhang Y, Zhao X, Fu R, Hua S, Xu S. Astrocytes in ischemic stroke: Crosstalk in central nervous system and therapeutic potential. Neuropathology 2024; 44:3-20. [PMID: 37345225 DOI: 10.1111/neup.12928] [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: 02/16/2023] [Revised: 05/04/2023] [Accepted: 05/26/2023] [Indexed: 06/23/2023]
Abstract
In the central nervous system (CNS), a large group of glial cells called astrocytes play important roles in both physiological and disease conditions. Astrocytes participate in the formation of neurovascular units and interact closely with other cells of the CNS, such as microglia and neurons. Stroke is a global disease with high mortality and disability rate, most of which are ischemic stroke. Significant strides in understanding astrocytes have been made over the past few decades. Astrocytes respond strongly to ischemic stroke through a process known as activation or reactivity. Given the important role played by reactive astrocytes (RAs) in different spatial and temporal aspects of ischemic stroke, there is a growing interest in the potential therapeutic role of astrocytes. Currently, interventions targeting astrocytes, such as mediating astrocyte polarization, reducing edema, regulating glial scar formation, and reprogramming astrocytes, have been proven in modulating the progression of ischemic stroke. The aforementioned potential interventions on astrocytes and the crosstalk between astrocytes and other cells of the CNS will be summarized in this review.
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Affiliation(s)
- Jueling Liu
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yuying Guo
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin, China
| | - Yunsha Zhang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xiaoxiao Zhao
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Rong Fu
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Shengyu Hua
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Shixin Xu
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin, China
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20
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Xia X, Chen J, Ren H, Zhou C, Zhang Q, Cheng H, Wang X. Gypenoside Pretreatment Alleviates the Cerebral Ischemia Injury via Inhibiting the Microglia-Mediated Neuroinflammation. Mol Neurobiol 2024; 61:1140-1156. [PMID: 37688709 DOI: 10.1007/s12035-023-03624-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 08/29/2023] [Indexed: 09/11/2023]
Abstract
Neuroinflammation is closely related to prognosis in ischemic stroke. Microglia are the main immune cells in the nervous system. Under physiological conditions, microglia participate in clearance of dead cells, synapse pruning and regulation of neuronal circuits to maintain the overall health of the nervous system. Once ischemic stroke occurs, microglia function in the occurrence and progression of neuroinflammation. Therefore, the regulation of microglia-mediated neuroinflammation is a potential therapeutic strategy for ischemic stroke. The anti-inflammatory activity of gypenosides (GPs) has been confirmed to be related to the activity of microglia in other neurological diseases. However, the role of GPs in neuroinflammation after ischemic stroke has not been studied. In this study, we investigated whether GPs could reduce neuroinflammation by regulating microglia and the underlying mechanism through qRT-PCR and western blot. Results showed that GPs pretreatment mitigated blood-brain barrier (BBB) damage in the mice subjected to middle cerebral artery occlusion (MCAO) and improved motor function. According to the results of immunofluorescence staining, GPs pretreatment alleviated neuroinflammation in MCAO mice by reducing the number of microglia and promoting their phenotypic transformation from M1 to M2. Furthermore, GPs pretreatment reduced the number of astrocytes in the penumbra and inhibited their polarization into the A1 type. We applied oxygen and glucose deprivation (OGD) on BV2 cells to mimic ischemic conditions in vitro and found similar effect as that in vivo. At the molecular level, the STAT-3/HIF1-α and TLR-4/NF-κB/HIF1-α pathways were involved in the anti-inflammatory effects of GPs in vitro and in vivo. Overall, this research indicates that GPs are potential therapeutic agents for ischemic stroke and has important reference significance to further explore the possibility of GPs application in ischemic stroke.
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Affiliation(s)
- Xue Xia
- Department of Cell Biology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Jiahao Chen
- Department of Cell Biology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Haiyuan Ren
- Department of Cell Biology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Chang Zhou
- Department of Cell Biology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Qingli Zhang
- Department of Cell Biology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Haoyang Cheng
- Department of Cell Biology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Xiaojing Wang
- Department of Cell Biology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China.
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21
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Bernardino PN, Luo AS, Andrew PM, Unkel CM, Gonzalez MI, Gelli A, Lein PJ. Evidence Implicating Blood-Brain Barrier Impairment in the Pathogenesis of Acquired Epilepsy following Acute Organophosphate Intoxication. J Pharmacol Exp Ther 2024; 388:301-312. [PMID: 37827702 PMCID: PMC10801776 DOI: 10.1124/jpet.123.001836] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 09/14/2023] [Accepted: 09/18/2023] [Indexed: 10/14/2023] Open
Abstract
Organophosphate (OP) poisoning can trigger cholinergic crisis, a life-threatening toxidrome that includes seizures and status epilepticus. These acute toxic responses are associated with persistent neuroinflammation and spontaneous recurrent seizures (SRS), also known as acquired epilepsy. Blood-brain barrier (BBB) impairment has recently been proposed as a pathogenic mechanism linking acute OP intoxication to chronic adverse neurologic outcomes. In this review, we briefly describe the cellular and molecular components of the BBB, review evidence of altered BBB integrity following acute OP intoxication, and discuss potential mechanisms by which acute OP intoxication may promote BBB dysfunction. We highlight the complex interplay between neuroinflammation and BBB dysfunction that suggests a positive feedforward interaction. Lastly, we examine research from diverse models and disease states that suggest mechanisms by which loss of BBB integrity may contribute to epileptogenic processes. Collectively, the literature identifies BBB impairment as a convergent mechanism of neurologic disease and justifies further mechanistic research into how acute OP intoxication causes BBB impairment and its role in the pathogenesis of SRS and potentially other long-term neurologic sequelae. Such research is critical for evaluating BBB stabilization as a neuroprotective strategy for mitigating OP-induced epilepsy and possibly seizure disorders of other etiologies. SIGNIFICANCE STATEMENT: Clinical and preclinical studies support a link between blood-brain barrier (BBB) dysfunction and epileptogenesis; however, a causal relationship has been difficult to prove. Mechanistic studies to delineate relationships between BBB dysfunction and epilepsy may provide novel insights into BBB stabilization as a neuroprotective strategy for mitigating epilepsy resulting from acute organophosphate (OP) intoxication and non-OP causes and potentially other adverse neurological conditions associated with acute OP intoxication, such as cognitive impairment.
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Affiliation(s)
- Pedro N Bernardino
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, California (P.N.B., A.S.L., P.M.A., C.M.U., P.J.L.); Department of Neurology, University of California, Davis, School of Medicine, Sacramento, California (M.I.G.); and Department of Pharmacology, University of California, Davis, School of Medicine, Davis, California (A.G.)
| | - Audrey S Luo
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, California (P.N.B., A.S.L., P.M.A., C.M.U., P.J.L.); Department of Neurology, University of California, Davis, School of Medicine, Sacramento, California (M.I.G.); and Department of Pharmacology, University of California, Davis, School of Medicine, Davis, California (A.G.)
| | - Peter M Andrew
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, California (P.N.B., A.S.L., P.M.A., C.M.U., P.J.L.); Department of Neurology, University of California, Davis, School of Medicine, Sacramento, California (M.I.G.); and Department of Pharmacology, University of California, Davis, School of Medicine, Davis, California (A.G.)
| | - Chelsea M Unkel
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, California (P.N.B., A.S.L., P.M.A., C.M.U., P.J.L.); Department of Neurology, University of California, Davis, School of Medicine, Sacramento, California (M.I.G.); and Department of Pharmacology, University of California, Davis, School of Medicine, Davis, California (A.G.)
| | - Marco I Gonzalez
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, California (P.N.B., A.S.L., P.M.A., C.M.U., P.J.L.); Department of Neurology, University of California, Davis, School of Medicine, Sacramento, California (M.I.G.); and Department of Pharmacology, University of California, Davis, School of Medicine, Davis, California (A.G.)
| | - Angie Gelli
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, California (P.N.B., A.S.L., P.M.A., C.M.U., P.J.L.); Department of Neurology, University of California, Davis, School of Medicine, Sacramento, California (M.I.G.); and Department of Pharmacology, University of California, Davis, School of Medicine, Davis, California (A.G.)
| | - Pamela J Lein
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, California (P.N.B., A.S.L., P.M.A., C.M.U., P.J.L.); Department of Neurology, University of California, Davis, School of Medicine, Sacramento, California (M.I.G.); and Department of Pharmacology, University of California, Davis, School of Medicine, Davis, California (A.G.)
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22
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López-Ojeda W, Hurley RA. Glucagon-Like Peptide 1: An Introduction and Possible Implications for Neuropsychiatry. J Neuropsychiatry Clin Neurosci 2024; 36:A4-86. [PMID: 38616646 DOI: 10.1176/appi.neuropsych.20230226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Affiliation(s)
- Wilfredo López-Ojeda
- Veterans Affairs Mid-Atlantic Mental Illness Research, Education and Clinical Center (MIRECC) and Research and Academic Affairs Service Line, W.G. Hefner Veterans Affairs Medical Center, Salisbury, N.C. (López-Ojeda, Hurley); Department of Psychiatry and Behavioral Medicine (López-Ojeda, Hurley) and Department of Radiology (Hurley), Wake Forest University School of Medicine, Winston-Salem, N.C.; Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston (Hurley)
| | - Robin A Hurley
- Veterans Affairs Mid-Atlantic Mental Illness Research, Education and Clinical Center (MIRECC) and Research and Academic Affairs Service Line, W.G. Hefner Veterans Affairs Medical Center, Salisbury, N.C. (López-Ojeda, Hurley); Department of Psychiatry and Behavioral Medicine (López-Ojeda, Hurley) and Department of Radiology (Hurley), Wake Forest University School of Medicine, Winston-Salem, N.C.; Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston (Hurley)
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23
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Lu D, Cai H, Li Y, Chang W, Liu X, Dai Q, Yu W, Chen W, Qiao G, Xie H, Xiao X, Li Z. Investigating the ID3/SLC22A4 as immune-related signatures in ischemic stroke. Aging (Albany NY) 2023; 15:14803-14829. [PMID: 38112574 PMCID: PMC10781493 DOI: 10.18632/aging.205308] [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: 08/03/2023] [Accepted: 11/03/2023] [Indexed: 12/21/2023]
Abstract
BACKGROUND Ischemic stroke (IS) is a fearful disease that can cause a variety of immune events. Nevertheless, precise immune-related mechanisms have yet to be systematically elucidated. This study aimed to identify immune-related signatures using machine learning and to validate them with animal experiments and single cell analysis. METHODS In this study, we screened 24 differentially expressed genes (DEGs) while identifying immune-related signatures that may play a key role in IS development through a comprehensive strategy between least absolute shrinkage and selection operation (LASSO) regression, support vector machine (SVM) and immune-related genes. In addition, we explored immune infiltration using the CIBERSORT algorithm. Finally, we performed validation in mouse brain tissue and single cell analysis. RESULTS We identified 24 DEGs for follow-up analysis. ID3 and SLC22A4 were finally identified as the better immune-related signatures through a comprehensive strategy among DEGs, LASSO, SVM and immune-related genes. RT-qPCR, western blot, and immunofluorescence revealed a significant decrease in ID3 and a significant increase in SLC22A4 in the middle cerebral artery occlusion group. Single cell analysis revealed that ID3 was mainly concentrated in endothelial_2 cells and SLC22A4 in astrocytes in the MCAO group. A CIBERSORT finds significantly altered levels of immune infiltration in IS patients. CONCLUSIONS This study focused on immune-related signatures after stroke and ID3 and SLC22A4 may be new therapeutic targets to promote functional recovery after stroke. Furthermore, the association of ID3 and SLC22A4 with immune cells may be a new direction for post-stroke immunotherapy.
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Affiliation(s)
- Dading Lu
- Department of Stroke Center, The First Hospital of China Medical University, Heping, Shenyang, Liaoning, China
- Department of Neurology, The First Hospital of China Medical University, Heping, Shenyang, Liaoning, China
- Department of Neurosurgery, The First Hospital of China Medical University, Heping, Shenyang, Liaoning, China
| | - Heng Cai
- Department of Neurosurgery, Shengjing Hospital, Shenyang, China medical University, Heping, Shenyang, China
| | - Yugang Li
- Department of Stroke Center, The First Hospital of China Medical University, Heping, Shenyang, Liaoning, China
| | - Wenyuan Chang
- Department of Neurology, The First Hospital of China Medical University, Heping, Shenyang, Liaoning, China
| | - Xiu Liu
- The First Clinical College, China Medical University, Shenbei, Shenyang, China
| | - Qiwei Dai
- Department of Neurosurgery, Shengjing Hospital, Shenyang, China medical University, Heping, Shenyang, China
| | - Wanning Yu
- Department of Neurosurgery, Shengjing Hospital, Shenyang, China medical University, Heping, Shenyang, China
| | - Wangli Chen
- Department of Neurosurgery, Shengjing Hospital, Shenyang, China medical University, Heping, Shenyang, China
| | - Guomin Qiao
- Department of Neurosurgery, Shengjing Hospital, Shenyang, China medical University, Heping, Shenyang, China
| | - Haojie Xie
- Department of Neurosurgery, Shengjing Hospital, Shenyang, China medical University, Heping, Shenyang, China
| | - Xiong Xiao
- Department of Neurosurgery, Shengjing Hospital, Shenyang, China medical University, Heping, Shenyang, China
| | - Zhiqing Li
- Department of Stroke Center, The First Hospital of China Medical University, Heping, Shenyang, Liaoning, China
- Department of Neurology, The First Hospital of China Medical University, Heping, Shenyang, Liaoning, China
- Department of Neurosurgery, The First Hospital of China Medical University, Heping, Shenyang, Liaoning, China
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24
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Wang M, Wan H, Wang Y, Yuan H, Ni Q, Sun B, Sun J, Wang Y. A Microfluidics-Based Multiplex SERS Immunoassay Device for Analysis of Acute Ischemic Stroke Biomarkers. Transl Stroke Res 2023:10.1007/s12975-023-01204-x. [PMID: 37987987 DOI: 10.1007/s12975-023-01204-x] [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: 08/15/2023] [Revised: 09/16/2023] [Accepted: 10/18/2023] [Indexed: 11/22/2023]
Abstract
Sensitive and accurate methods for early detection of acute ischemic stroke (AIS) are essential for timely treatment and prognostic assessment of patients. In this study, we report a microfluidics-based ultrasensitive surface-enhanced Raman scattering (SERS) immunoassay device for the quantitative determination of multiplex biomarkers in AIS. By preparing 5,5'-dithiobis-2-nitrobenzoic acid (DTNB) antibody-modified gold nanoparticles (AuNPs) on SERS devices as SERS probes, the biomarkers in whole blood of AIS were accurately captured and further visualized for SERS signal intensity quantitative analysis of six biomarkers in the blood samples. It is worth mentioning that the limit of detection (LOD) of the method can reach the level of fg/mL, with excellent sensitivity and selectivity. Meanwhile, the analytical comparison with ELISA method showed that the detection results of both methods were consistent, which verified the feasibility of the assembled device. The SERS immunoassay device detection provides a powerful strategy for the prediction, early diagnosis and dynamic monitoring of prognosis of AIS with a wide range of clinical practice prospects.
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Affiliation(s)
- Mengyue Wang
- School of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, 250355, Shandong, China
- Shandong First Medical University & Shandong Academy of Medical Sciences, The Second Affiliated Hospital, Taian, 271000, Shandong, China
| | - Huiyu Wan
- Shandong First Medical University & Shandong Academy of Medical Sciences, The Second Affiliated Hospital, Taian, 271000, Shandong, China
| | - Yanjiao Wang
- School of Radiology, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271000, Shandong, China
| | - Hui Yuan
- Shandong First Medical University & Shandong Academy of Medical Sciences, The Second Affiliated Hospital, Taian, 271000, Shandong, China
| | - Qingbin Ni
- Postdoctoral Workstation, Taian Central Hospital, Taian, 271000, Shandong, China
| | - Baoliang Sun
- School of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, 250355, Shandong, China.
- Shandong First Medical University & Shandong Academy of Medical Sciences, The Second Affiliated Hospital, Taian, 271000, Shandong, China.
| | - Jingyi Sun
- Shandong First Medical University & Shandong Academy of Medical Sciences, The Second Affiliated Hospital, Taian, 271000, Shandong, China.
- Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China.
| | - Ying Wang
- Shandong First Medical University & Shandong Academy of Medical Sciences, The Second Affiliated Hospital, Taian, 271000, Shandong, China.
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25
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Hang Z, Zhou L, Xing C, Wen Y, Du H. The blood-brain barrier, a key bridge to treat neurodegenerative diseases. Ageing Res Rev 2023; 91:102070. [PMID: 37704051 DOI: 10.1016/j.arr.2023.102070] [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: 06/09/2023] [Revised: 09/06/2023] [Accepted: 09/09/2023] [Indexed: 09/15/2023]
Abstract
As a highly selective and semi-permeable barrier that separates the circulating blood from the brain and central nervous system (CNS), the blood-brain barrier (BBB) plays a critical role in the onset and treatment of neurodegenerative diseases (NDs). To delay or reverse the NDs progression, the dysfunction of BBB should be improved to protect the brain from harmful substances. Simultaneously, a highly efficient drug delivery across the BBB is indispensable. Here, we summarized several methods to improve BBB dysfunction in NDs, including knocking out risk geneAPOE4, regulating circadian rhythms, restoring the gut microenvironment, and activating the Wnt/β-catenin signaling pathway. Then we discussed the advances in BBB penetration techniques, such as transient BBB opening, carrier-mediated drug delivery, and nasal administration, which facilitates drug delivery across the BBB. Furthermore, various in vivo and in vitro BBB models and research methods related to NDs are reviewed. Based on the current research progress, the treatment of NDs in the long term should prioritize the integrity of the BBB. However, a treatment approach that combines precise control of transient BBB permeability and non-invasive targeted BBB drug delivery holds profound significance in improving treatment effectiveness, safety, and clinical feasibility during drug therapy. This review involves the cross application of biology, materials science, imaging, engineering and other disciplines in the field of BBB, aiming to provide multi-dimensional research directions and clinical ideas for the treating NDs.
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Affiliation(s)
- Zhongci Hang
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China; Daxing Research Institute, University of Science and Technology Beijing, Beijing 100083, China
| | - Liping Zhou
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China; Daxing Research Institute, University of Science and Technology Beijing, Beijing 100083, China; Beijing Key Laboratory for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Cencan Xing
- Daxing Research Institute, University of Science and Technology Beijing, Beijing 100083, China
| | - Yongqiang Wen
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China; Beijing Key Laboratory for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing 100083, China.
| | - Hongwu Du
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China; Daxing Research Institute, University of Science and Technology Beijing, Beijing 100083, China.
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Lin W, Zhao XY, Cheng JW, Li LT, Jiang Q, Zhang YX, Han F. Signaling pathways in brain ischemia: Mechanisms and therapeutic implications. Pharmacol Ther 2023; 251:108541. [PMID: 37783348 DOI: 10.1016/j.pharmthera.2023.108541] [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: 06/11/2023] [Revised: 09/18/2023] [Accepted: 09/25/2023] [Indexed: 10/04/2023]
Abstract
Ischemic stroke occurs when the arteries supplying blood to the brain are narrowed or blocked, inducing damage to brain tissue due to a lack of blood supply. One effective way to reduce brain damage and alleviate symptoms is to reopen blocked blood vessels in a timely manner and reduce neuronal damage. To achieve this, researchers have focused on identifying key cellular signaling pathways that can be targeted with drugs. These pathways include oxidative/nitrosative stress, excitatory amino acids and their receptors, inflammatory signaling molecules, metabolic pathways, ion channels, and other molecular events involved in stroke pathology. However, evidence suggests that solely focusing on protecting neurons may not yield satisfactory clinical results. Instead, researchers should consider the multifactorial and complex mechanisms underlying stroke pathology, including the interactions between different components of the neurovascular unit. Such an approach is more representative of the actual pathological process observed in clinical settings. This review summarizes recent research on the multiple molecular mechanisms and drug targets in ischemic stroke, as well as recent advances in novel therapeutic strategies. Finally, we discuss the challenges and future prospects of new strategies based on the biological characteristics of stroke.
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Affiliation(s)
- Wen Lin
- Medical Basic Research Innovation Center for Cardiovascular and Cerebrovascular Diseases, Ministry of Education, China; International Joint Laboratory for Drug Target of Critical Illnesses, Key Laboratory of Cardiovascular and Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Xiang-Yu Zhao
- Medical Basic Research Innovation Center for Cardiovascular and Cerebrovascular Diseases, Ministry of Education, China; International Joint Laboratory for Drug Target of Critical Illnesses, Key Laboratory of Cardiovascular and Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Jia-Wen Cheng
- Department of Physiology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing 211166, China
| | - Li-Tao Li
- Department of Neurology, Hebei General Hospital, Shijiazhuang 050051, Hebei, China
| | - Quan Jiang
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Yi-Xuan Zhang
- Medical Basic Research Innovation Center for Cardiovascular and Cerebrovascular Diseases, Ministry of Education, China; International Joint Laboratory for Drug Target of Critical Illnesses, Key Laboratory of Cardiovascular and Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China; Gusu School, Nanjing Medical University, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou 215002, China.
| | - Feng Han
- Medical Basic Research Innovation Center for Cardiovascular and Cerebrovascular Diseases, Ministry of Education, China; International Joint Laboratory for Drug Target of Critical Illnesses, Key Laboratory of Cardiovascular and Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China; Gusu School, Nanjing Medical University, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou 215002, China; Institute of Brain Science, the Affiliated Brain Hospital of Nanjing Medical University, Nanjing 211166, China.
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Meng S, Cao H, Huang Y, Shi Z, Li J, Wang Y, Zhang Y, Chen S, Shi H, Gao Y. ASK1-K716R reduces neuroinflammation and white matter injury via preserving blood-brain barrier integrity after traumatic brain injury. J Neuroinflammation 2023; 20:244. [PMID: 37875988 PMCID: PMC10594934 DOI: 10.1186/s12974-023-02923-6] [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: 08/10/2023] [Accepted: 10/05/2023] [Indexed: 10/26/2023] Open
Abstract
BACKGROUND Traumatic brain injury (TBI) is a significant worldwide public health concern that necessitates attention. Apoptosis signal-regulating kinase 1 (ASK1), a key player in various central nervous system (CNS) diseases, has garnered interest for its potential neuroprotective effects against ischemic stroke and epilepsy when deleted. Nonetheless, the specific impact of ASK1 on TBI and its underlying mechanisms remain elusive. Notably, mutation of ATP-binding sites, such as lysine residues, can lead to catalytic inactivation of ASK1. To address these knowledge gaps, we generated transgenic mice harboring a site-specific mutant ASK1 Map3k5-e (K716R), enabling us to assess its effects and elucidate potential underlying mechanisms following TBI. METHODS We employed the CRIPR/Cas9 system to generate a transgenic mouse model carrying the ASK1-K716R mutation, aming to investigate the functional implications of this specific mutant. The controlled cortical impact method was utilized to induce TBI. Expression and distribution of ASK1 were detected through Western blotting and immunofluorescence staining, respectively. The ASK1 kinase activity after TBI was detected by a specific ASK1 kinase activity kit. Cerebral microvessels were isolated by gradient centrifugation using dextran. Immunofluorescence staining was performed to evaluate blood-brain barrier (BBB) damage. BBB ultrastructure was visualized using transmission electron microscopy, while the expression levels of endothelial tight junction proteins and ASK1 signaling pathway proteins was detected by Western blotting. To investigate TBI-induced neuroinflammation, we conducted immunofluorescence staining, quantitative real-time polymerase chain reaction (qRT-PCR) and flow cytometry analyses. Additionally, immunofluorescence staining and electrophysiological compound action potentials were conducted to evaluate gray and white matter injury. Finally, sensorimotor function and cognitive function were assessed by a battery of behavioral tests. RESULTS The activity of ASK1-K716R was significantly decreased following TBI. Western blotting confirmed that ASK1-K716R effectively inhibited the phosphorylation of ASK1, JNKs, and p38 in response to TBI. Additionally, ASK1-K716R demonstrated a protective function in maintaining BBB integrity by suppressing ASK1/JNKs activity in endothelial cells, thereby reducing the degradation of tight junction proteins following TBI. Besides, ASK1-K716R effectively suppressed the infiltration of peripheral immune cells into the brain parenchyma, decreased the number of proinflammatory-like microglia/macrophages, increased the number of anti-inflammatory-like microglia/macrophages, and downregulated expression of several proinflammatory factors. Furthermore, ASK1-K716R attenuated white matter injury and improved the nerve conduction function of both myelinated and unmyelinated fibers after TBI. Finally, our findings demonstrated that ASK1-K716R exhibited favorable long-term functional and histological outcomes in the aftermath of TBI. CONCLUSION ASK1-K716R preserves BBB integrity by inhibiting ASK1/JNKs pathway in endothelial cells, consequently reducing the degradation of tight junction proteins. Additionally, it alleviates early neuroinflammation by inhibiting the infiltration of peripheral immune cells into the brain parenchyma and modulating the polarization of microglia/macrophages. These beneficial effects of ASK1-K716R subsequently result in a reduction in white matter injury and promote the long-term recovery of neurological function following TBI.
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Affiliation(s)
- Shan Meng
- State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, and Institutes of Brain Science, Fudan University, Shanghai, 200032, China
| | - Hui Cao
- State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, and Institutes of Brain Science, Fudan University, Shanghai, 200032, China
| | - Yichen Huang
- State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, and Institutes of Brain Science, Fudan University, Shanghai, 200032, China
| | - Ziyu Shi
- State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, and Institutes of Brain Science, Fudan University, Shanghai, 200032, China
| | - Jiaying Li
- State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, and Institutes of Brain Science, Fudan University, Shanghai, 200032, China
| | - Yana Wang
- State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, and Institutes of Brain Science, Fudan University, Shanghai, 200032, China
| | - Yue Zhang
- State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, and Institutes of Brain Science, Fudan University, Shanghai, 200032, China
| | - Shuning Chen
- State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, and Institutes of Brain Science, Fudan University, Shanghai, 200032, China
| | - Hong Shi
- Department of Anesthesiology, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, 200433, China.
| | - Yanqin Gao
- State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, and Institutes of Brain Science, Fudan University, Shanghai, 200032, China.
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Ricciardelli AR, Robledo A, Fish JE, Kan PT, Harris TH, Wythe JD. The Role and Therapeutic Implications of Inflammation in the Pathogenesis of Brain Arteriovenous Malformations. Biomedicines 2023; 11:2876. [PMID: 38001877 PMCID: PMC10669898 DOI: 10.3390/biomedicines11112876] [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: 08/29/2023] [Revised: 10/13/2023] [Accepted: 10/16/2023] [Indexed: 11/26/2023] Open
Abstract
Brain arteriovenous malformations (bAVMs) are focal vascular lesions composed of abnormal vascular channels without an intervening capillary network. As a result, high-pressure arterial blood shunts directly into the venous outflow system. These high-flow, low-resistance shunts are composed of dilated, tortuous, and fragile vessels, which are prone to rupture. BAVMs are a leading cause of hemorrhagic stroke in children and young adults. Current treatments for bAVMs are limited to surgery, embolization, and radiosurgery, although even these options are not viable for ~20% of AVM patients due to excessive risk. Critically, inflammation has been suggested to contribute to lesion progression. Here we summarize the current literature discussing the role of the immune system in bAVM pathogenesis and lesion progression, as well as the potential for targeting inflammation to prevent bAVM rupture and intracranial hemorrhage. We conclude by proposing that a dysfunctional endothelium, which harbors the somatic mutations that have been shown to give rise to sporadic bAVMs, may drive disease development and progression by altering the immune status of the brain.
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Affiliation(s)
- Ashley R. Ricciardelli
- Cardiovascular Research Institute, Baylor College of Medicine, Houston, TX 77030, USA
- Department of Integrative Physiology, Baylor College of Medicine, Houston, TX 77030, USA
- Department of Neurosurgery, Baylor College of Medicine, Houston, TX 77030, USA
| | - Ariadna Robledo
- Department of Neurosurgery, University of Texas Medical Branch, Galveston, TX 77555, USA; (A.R.)
| | - Jason E. Fish
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON M5G 2C4, Canada;
- Laboratory Medicine & Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada
- Peter Munk Cardiac Centre, University Health Network, Toronto, ON M5G 2N2, Canada
| | - Peter T. Kan
- Department of Neurosurgery, University of Texas Medical Branch, Galveston, TX 77555, USA; (A.R.)
| | - Tajie H. Harris
- Department of Neuroscience, University of Virginia School of Medicine, Charlottesville, VA 22903, USA;
- Brain, Immunology, and Glia (BIG) Center, University of Virginia School of Medicine, Charlottesville, VA 22903, USA
| | - Joshua D. Wythe
- Cardiovascular Research Institute, Baylor College of Medicine, Houston, TX 77030, USA
- Department of Integrative Physiology, Baylor College of Medicine, Houston, TX 77030, USA
- Department of Neurosurgery, Baylor College of Medicine, Houston, TX 77030, USA
- Department of Neuroscience, University of Virginia School of Medicine, Charlottesville, VA 22903, USA;
- Brain, Immunology, and Glia (BIG) Center, University of Virginia School of Medicine, Charlottesville, VA 22903, USA
- Department of Cell Biology, University of Virginia School of Medicine, Charlottesville, VA 22903, USA
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA 22903, USA
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Yang R, Li Z, Xu J, Luo J, Qu Z, Chen X, Yu S, Shu H. Role of hypoxic exosomes and the mechanisms of exosome release in the CNS under hypoxic conditions. Front Neurol 2023; 14:1198546. [PMID: 37786863 PMCID: PMC10541965 DOI: 10.3389/fneur.2023.1198546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Accepted: 08/09/2023] [Indexed: 10/04/2023] Open
Abstract
Hypoxia is characterized by low oxygen levels in the body or environment, resulting in various physiological and pathological changes. The brain, which has the highest oxygen consumption of any organ, is particularly susceptible to hypoxic injury. Exposure to low-pressure hypoxic environments can cause irreversible brain damage. Hypoxia can occur in healthy individuals at high altitudes or in pathological conditions such as trauma, stroke, inflammation, and autoimmune and neurodegenerative diseases, leading to severe brain damage and impairments in cognitive, learning, and memory functions. Exosomes may play a role in the mechanisms of hypoxic injury and adaptation and are a current focus of research. Investigating changes in exosomes in the central nervous system under hypoxic conditions may aid in preventing secondary damage caused by hypoxia. This paper provides a brief overview of central nervous system injury resulting from hypoxia, and aimed to conduct a comprehensive literature review to assess the pathophysio-logical impact of exosomes on the central nervous system under hypoxic conditions.
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Affiliation(s)
- Rong Yang
- Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan Province, China
- Department of Neurosurgery, Western Theater General Hospital, Chengdu, Sichuan Province, China
| | - Zheng Li
- Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan Province, China
- Department of Neurosurgery, Western Theater General Hospital, Chengdu, Sichuan Province, China
| | - Jing Xu
- Department of Neurosurgery, Western Theater General Hospital, Chengdu, Sichuan Province, China
- College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan Province, China
| | - Juan Luo
- Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan Province, China
- Department of Neurosurgery, Western Theater General Hospital, Chengdu, Sichuan Province, China
| | - Zhichuang Qu
- Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan Province, China
- Department of Neurosurgery, Western Theater General Hospital, Chengdu, Sichuan Province, China
| | - Xin Chen
- Department of Neurosurgery, Western Theater General Hospital, Chengdu, Sichuan Province, China
- College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan Province, China
| | - Sixun Yu
- Department of Neurosurgery, Western Theater General Hospital, Chengdu, Sichuan Province, China
- College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan Province, China
| | - Haifeng Shu
- Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan Province, China
- Department of Neurosurgery, Western Theater General Hospital, Chengdu, Sichuan Province, China
- College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan Province, China
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Wang C, Jiang H, Liu H, Chen S, Guo H, Ma S, Han W, Li Y, Wang D. Isoforsythiaside confers neuroprotection against Alzheimer’s disease by attenuating ferroptosis and neuroinflammation in vivo and in vitro. FOOD SCIENCE AND HUMAN WELLNESS 2023. [DOI: 10.1016/j.fshw.2023.02.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
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Lu W, Chen Z, Wen J. The role of RhoA/ROCK pathway in the ischemic stroke-induced neuroinflammation. Biomed Pharmacother 2023; 165:115141. [PMID: 37437375 DOI: 10.1016/j.biopha.2023.115141] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 07/03/2023] [Accepted: 07/07/2023] [Indexed: 07/14/2023] Open
Abstract
It is widely known that ischemic stroke is the prominent cause of death and disability. To date, neuroinflammation following ischemic stroke represents a complex event, which is an essential process and affects the prognosis of both experimental stroke animals and stroke patients. Intense neuroinflammation occurring during the acute phase of stroke contributes to neuronal injury, BBB breakdown, and worse neurological outcomes. Inhibition of neuroinflammation may be a promising target in the development of new therapeutic strategies. RhoA is a small GTPase protein that activates a downstream effector, ROCK. The up-regulation of RhoA/ROCK pathway possesses important roles in promoting the neuroinflammation and mediating brain injury. In addition, nuclear factor-kappa B (NF-κB) is another vital regulator of ischemic stroke-induced neuroinflammation through regulating the functions of microglial cells and astrocytes. After stroke onset, the microglial cells and astrocytes are activated and undergo the morphological and functional changes, thereby deeply participate in a complicated neuroinflammation cascade. In this review, we focused on the relationship among RhoA/ROCK pathway, NF-κB and glial cells in the neuroinflammation following ischemic stroke to reveal new strategies for preventing the intense neuroinflammation.
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Affiliation(s)
- Weizhuo Lu
- Medical Branch, Hefei Technology College, Hefei, China
| | - Zhiwu Chen
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei, China.
| | - Jiyue Wen
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei, China.
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Millán Solano MV, Salinas Lara C, Sánchez-Garibay C, Soto-Rojas LO, Escobedo-Ávila I, Tena-Suck ML, Ortíz-Butrón R, Choreño-Parra JA, Romero-López JP, Meléndez Camargo ME. Effect of Systemic Inflammation in the CNS: A Silent History of Neuronal Damage. Int J Mol Sci 2023; 24:11902. [PMID: 37569277 PMCID: PMC10419139 DOI: 10.3390/ijms241511902] [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: 05/23/2023] [Revised: 06/21/2023] [Accepted: 06/24/2023] [Indexed: 08/13/2023] Open
Abstract
Central nervous system (CNS) infections including meningitis and encephalitis, resulting from the blood-borne spread of specific microorganisms, provoke nervous tissue damage due to the inflammatory process. Moreover, different pathologies such as sepsis can generate systemic inflammation. Bacterial lipopolysaccharide (LPS) induces the release of inflammatory mediators and damage molecules, which are then released into the bloodstream and can interact with structures such as the CNS, thus modifying the blood-brain barrier's (BBB´s) and blood-cerebrospinal fluid barrier´s (BCSFB´s) function and inducing aseptic neuroinflammation. During neuroinflammation, the participation of glial cells (astrocytes, microglia, and oligodendrocytes) plays an important role. They release cytokines, chemokines, reactive oxygen species, nitrogen species, peptides, and even excitatory amino acids that lead to neuronal damage. The neurons undergo morphological and functional changes that could initiate functional alterations to neurodegenerative processes. The present work aims to explain these processes and the pathophysiological interactions involved in CNS damage in the absence of microbes or inflammatory cells.
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Affiliation(s)
- Mara Verónica Millán Solano
- Red MEDICI, Carrera Médico Cirujano, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de Mexico, Tlalnepantla 54090, Mexico; (M.V.M.S.); (C.S.-G.); (L.O.S.-R.); (I.E.-Á.); (J.P.R.-L.)
- Laboratory of Immunobiology and Genetics, Instituto Nacional de Enfermedades Respiratorias Ismael Cos’ıo Villegas, Mexico City 14080, Mexico;
| | - Citlaltepetl Salinas Lara
- Red MEDICI, Carrera Médico Cirujano, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de Mexico, Tlalnepantla 54090, Mexico; (M.V.M.S.); (C.S.-G.); (L.O.S.-R.); (I.E.-Á.); (J.P.R.-L.)
- Departamento de Neuropatología, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suarez, Mexico City 14269, Mexico;
| | - Carlos Sánchez-Garibay
- Red MEDICI, Carrera Médico Cirujano, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de Mexico, Tlalnepantla 54090, Mexico; (M.V.M.S.); (C.S.-G.); (L.O.S.-R.); (I.E.-Á.); (J.P.R.-L.)
- Departamento de Neuropatología, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suarez, Mexico City 14269, Mexico;
| | - Luis O. Soto-Rojas
- Red MEDICI, Carrera Médico Cirujano, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de Mexico, Tlalnepantla 54090, Mexico; (M.V.M.S.); (C.S.-G.); (L.O.S.-R.); (I.E.-Á.); (J.P.R.-L.)
- Laboratorio de Patogénesis Molecular, Laboratorio 4, Edificio A4, Carrera Médico Cirujano, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla 54090, Mexico
| | - Itzel Escobedo-Ávila
- Red MEDICI, Carrera Médico Cirujano, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de Mexico, Tlalnepantla 54090, Mexico; (M.V.M.S.); (C.S.-G.); (L.O.S.-R.); (I.E.-Á.); (J.P.R.-L.)
- Departamento de Neurodesarrollo y Fisiología, Instituto de Fisiología Celular, Universidad Nacional Autonoma de Mexico, Mexico City 04510, Mexico
| | - Martha Lilia Tena-Suck
- Departamento de Neuropatología, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suarez, Mexico City 14269, Mexico;
| | - Rocío Ortíz-Butrón
- Laboratorio de Neurobiología, Departamento de Fisiología de ENCB, Instituto Politécnico Nacional, Mexico City 07738, Mexico;
| | - José Alberto Choreño-Parra
- Laboratory of Immunobiology and Genetics, Instituto Nacional de Enfermedades Respiratorias Ismael Cos’ıo Villegas, Mexico City 14080, Mexico;
| | - José Pablo Romero-López
- Red MEDICI, Carrera Médico Cirujano, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de Mexico, Tlalnepantla 54090, Mexico; (M.V.M.S.); (C.S.-G.); (L.O.S.-R.); (I.E.-Á.); (J.P.R.-L.)
- Laboratorio de Patogénesis Molecular, Laboratorio 4, Edificio A4, Carrera Médico Cirujano, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla 54090, Mexico
| | - María Estela Meléndez Camargo
- Laboratorio de Farmacología, Departamento de Farmacia, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Av. Wilfrido Massieu Esq. Manuel Luis Stampa S/N, U.P. Adolfo López Mateos, Mexico City 07738, Mexico;
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Zhuo C, Tian H, Song X, Jiang D, Chen G, Cai Z, Ping J, Cheng L, Zhou C, Chen C. Microglia and cognitive impairment in schizophrenia: translating scientific progress into novel therapeutic interventions. SCHIZOPHRENIA (HEIDELBERG, GERMANY) 2023; 9:42. [PMID: 37429882 DOI: 10.1038/s41537-023-00370-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 06/21/2023] [Indexed: 07/12/2023]
Abstract
Cognitive impairment is a core clinical feature of schizophrenia, exerting profound adverse effects on social functioning and quality of life in a large proportion of patients with schizophrenia. However, the mechanisms underlying the pathogenesis of schizophrenia-related cognitive impairment are not well understood. Microglia, the primary resident macrophages in the brain, have been shown to play important roles in psychiatric disorders, including schizophrenia. Increasing evidence has revealed excessive microglial activation in cognitive deficits related to a broad range of diseases and medical conditions. Relative to that about age-related cognitive deficits, current knowledge about the roles of microglia in cognitive impairment in neuropsychiatric disorders, such as schizophrenia, is limited, and such research is in its infancy. Thus, we conducted this review of the scientific literature with a focus on the role of microglia in schizophrenia-associated cognitive impairment, aiming to gain insight into the roles of microglial activation in the onset and progression of such impairment and to consider how scientific advances could be translated to preventive and therapeutic interventions. Research has demonstrated that microglia, especially those in the gray matter of the brain, are activated in schizophrenia. Upon activation, microglia release key proinflammatory cytokines and free radicals, which are well-recognized neurotoxic factors contributing to cognitive decline. Thus, we propose that the inhibition of microglial activation holds potential for the prevention and treatment of cognitive deficits in patients with schizophrenia. This review identifies potential targets for the development of new treatment strategies and eventually the improvement of care for these patients. It might also help psychologists and clinical investigators in planning future research.
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Affiliation(s)
- Chuanjun Zhuo
- Key Laboratory of Sensory Information Processing Abnormalities in Schizophrenia (SIPAS-Lab), Nankai University Affiliated Tianjin Fourth Center Hospital, Tianjin Medical University Affiliated Tianjin Fourth Center Hospital, Tianjin Fourth Center Hospital, Tianjin, China.
- Laboratory of Psychiatric-Neuroimaging-Genetic and Co-morbidity (PNGC-Lab), Nankai University Affiliated Tianjin Anding Hospital, Tianjin Mental Health Center of Tianjin Medical University, Tianjin Anding Hospital, 300222, Tianjin, China.
- Department of Psychiatry, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
- Department of Psychiatry, Wenzhou Seventh peoples Hospital, Wenzhou, China.
| | - Hongjun Tian
- Key Laboratory of Sensory Information Processing Abnormalities in Schizophrenia (SIPAS-Lab), Nankai University Affiliated Tianjin Fourth Center Hospital, Tianjin Medical University Affiliated Tianjin Fourth Center Hospital, Tianjin Fourth Center Hospital, Tianjin, China
| | - Xueqin Song
- Department of Psychiatry, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Henan International Joint Laboratory of Biological Psychiatry, Zhengzhou, China
- Henan Psychiatric Transformation Research Key Laboratory, Zhengzhou University, Zhengzhou, China
| | - Deguo Jiang
- Department of Psychiatry, Wenzhou Seventh peoples Hospital, Wenzhou, China
| | - Guangdong Chen
- Department of Psychiatry, Wenzhou Seventh peoples Hospital, Wenzhou, China
| | - Ziyao Cai
- Department of Psychiatry, Wenzhou Seventh peoples Hospital, Wenzhou, China
| | - Jing Ping
- Department of Psychiatry, Wenzhou Seventh peoples Hospital, Wenzhou, China
| | - Langlang Cheng
- Department of Psychiatry, Wenzhou Seventh peoples Hospital, Wenzhou, China
| | - Chunhua Zhou
- Department of Pharmacology, The First Hospital of Hebei Medical University, Shijiazhuang, China.
| | - Chunmian Chen
- Department of Psychiatry, Wenzhou Seventh peoples Hospital, Wenzhou, China
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Guo M, Cao Q, Xia S, Cao X, Chen J, Qian Y, Bao X, Xu Y. A newly-synthesized compound CP-07 alleviates microglia-mediated neuroinflammation and ischemic brain injury via inhibiting STAT3 phosphorylation. J Transl Int Med 2023; 11:156-168. [PMID: 37408577 PMCID: PMC10318917 DOI: 10.2478/jtim-2023-0090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/07/2023] Open
Abstract
Background and Objectives Overactivated glial cells, especially microglia, are core components in the progression of pathologic neuroinflammation, and the application of anti-inflammatory reagents has been regarded as a potential therapy in the management of infarction/reperfusion (I/R) brain injury. This research aims to clarify the anti-inflammatory efect of a novel lipophilic compound N-(2-[4-tert-butylphenyl]-2-[pyrrolidine-1-yl]ethyl)-7-methyl-4-oxo-4H-chromene-2-carboxamide (named CP-07 in this study) in LPS-stimulated BV2 cell line and primary mouse microglia, and its therapeutic effect on I/R brain injury. Method Cell Counting Kit-8 assay was used to determine the maximal nontoxic dose of CP-07. The mRNA levels of representative proinflammatory cytokines were determined by quantitative real-time polymerase chain reaction both in vitro and in vivo. TTC staining was performed to calculate infarct volumes while behavioral tests were used to assess the neurological deficits at 24 h after middle cerebral artery occlusion (MCAO). Flow cytometry analysis and immunofluorescence staining were performed to calculate the percentage of pro-inflammatory microglia in vivo.A selective JAK2/STAT3 pathway inhibitor, AG490 was used to block STAT3 phosphorylation before the CP-07 anti-inflammation tests in vitro. Results CP-07 could effectively suppress the mRNA levels of IL-6, IL-1β, iNOS and TNF-α induced by lipopolysaccharide (LPS) in vitro, and markedly block the evaluation of the fluorescence intensity of Iba-1 in primary mouse microglia. In middle cerebral arteryocclusion models, intraperitoneal injection with 1 mg/kg CP-07 significantly reduced cerebral infarct volumes at 24 h after surgery compared with vehicle treatment group, and promoted the recovery of neurological functions in MCAO mice. Further studies validated that CP-07 administration reduced the percentage of CD86 positive microglia after I/R injury, and the expression level of p-STAT3 was also markedly reduced in both microglial cells and the penumbra tissues. Blocking STAT3 phosphorylation with AG490 could completely eliminate the anti-inflammatory effects of CP-07, at least in vitro. Conclusion We showed that a newly synthesized compound, CP-07, could effectively reduce the inflammatory responses in LPS-stimulated BV2 cells and primary mouse microglia, and overproduction of cytokines in middle cerebral artery occlusion mouse models by inhibiting STAT3 phosphorylation, leading to a neuroprotective effect on I/R brain injury.
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Affiliation(s)
- Mengdi Guo
- Department of Neurology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing210008, Jiangsu Province, China
- Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing210008, Jiangsu Province, China
- Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing210008, Jiangsu Province, China
- Nanjing Neuropsychiatry Clinic Medical Center, Nanjing210008, Jiangsu Province, China
| | - Qian Cao
- Nanjing Drum Tower Hospital Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing210008, Jiangsu Province, China
| | - Shengnan Xia
- Department of Neurology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing210008, Jiangsu Province, China
- Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing210008, Jiangsu Province, China
- Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing210008, Jiangsu Province, China
- Nanjing Neuropsychiatry Clinic Medical Center, Nanjing210008, Jiangsu Province, China
| | - Xiang Cao
- Department of Neurology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing210008, Jiangsu Province, China
- Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing210008, Jiangsu Province, China
- Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing210008, Jiangsu Province, China
- Nanjing Neuropsychiatry Clinic Medical Center, Nanjing210008, Jiangsu Province, China
| | - Jian Chen
- Department of Neurology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing210008, Jiangsu Province, China
- Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing210008, Jiangsu Province, China
- Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing210008, Jiangsu Province, China
- Nanjing Neuropsychiatry Clinic Medical Center, Nanjing210008, Jiangsu Province, China
| | - Yi Qian
- Department of Neurology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing210008, Jiangsu Province, China
- Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing210008, Jiangsu Province, China
- Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing210008, Jiangsu Province, China
- Nanjing Neuropsychiatry Clinic Medical Center, Nanjing210008, Jiangsu Province, China
| | - Xinyu Bao
- Department of Neurology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing210008, Jiangsu Province, China
- Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing210008, Jiangsu Province, China
- Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing210008, Jiangsu Province, China
- Nanjing Neuropsychiatry Clinic Medical Center, Nanjing210008, Jiangsu Province, China
| | - Yun Xu
- Department of Neurology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing210008, Jiangsu Province, China
- Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing210008, Jiangsu Province, China
- Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing210008, Jiangsu Province, China
- Nanjing Neuropsychiatry Clinic Medical Center, Nanjing210008, Jiangsu Province, China
- Nanjing Drum Tower Hospital Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing210008, Jiangsu Province, China
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Li Z, Jiang Y, Long C, Peng Q, Yue R. The gut microbiota-astrocyte axis: Implications for type 2 diabetic cognitive dysfunction. CNS Neurosci Ther 2023; 29 Suppl 1:59-73. [PMID: 36601656 PMCID: PMC10314112 DOI: 10.1111/cns.14077] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/20/2022] [Accepted: 12/18/2022] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Diabetic cognitive dysfunction (DCD) is one of the most insidious complications of type 2 diabetes mellitus, which can seriously affect the ability to self-monitoring of blood glucose and the quality of life in the elderly. Previous pathological studies of cognitive dysfunction have focused on neuronal dysfunction, characterized by extracellular beta-amyloid deposition and intracellular tau hyperphosphorylation. In recent years, astrocytes have been recognized as a potential therapeutic target for cognitive dysfunction and important participants in the central control of metabolism. The disorder of gut microbiota and their metabolites have been linked to a series of metabolic diseases such as diabetes mellitus. The imbalance of intestinal flora has the effect of promoting the occurrence and deterioration of several diabetes-related complications. Gut microbes and their metabolites can drive astrocyte activation. AIMS We reviewed the pathological progress of DCD related to the "gut microbiota-astrocyte" axis in terms of peripheral and central inflammation, intestinal and blood-brain barrier (BBB) dysfunction, systemic and brain energy metabolism disorders to deepen the pathological research progress of DCD and explore the potential therapeutic targets. CONCLUSION "Gut microbiota-astrocyte" axis, unique bidirectional crosstalk in the brain-gut axis, mediates the intermediate pathological process of neurocognitive dysfunction secondary to metabolic disorders in diabetes mellitus.
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Affiliation(s)
- Zi‐Han Li
- Hospital of Chengdu University of Traditional Chinese MedicineChengduChina
| | - Ya‐Yi Jiang
- Hospital of Chengdu University of Traditional Chinese MedicineChengduChina
| | - Cai‐Yi Long
- Hospital of Chengdu University of Traditional Chinese MedicineChengduChina
| | - Qian Peng
- Hospital of Chengdu University of Traditional Chinese MedicineChengduChina
| | - Ren‐Song Yue
- Hospital of Chengdu University of Traditional Chinese MedicineChengduChina
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Tu XK, Chen PP, Chen JY, Ding YH, Chen Q, Shi SS. GLP-1R knockdown abrogates the protective effects of liraglutide on ischaemic stroke via inhibition of M2 polarisation and activation of NLRP3 inflammasome by reducing Nrf2 activation. Neuropharmacology 2023:109603. [PMID: 37236529 DOI: 10.1016/j.neuropharm.2023.109603] [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: 03/21/2023] [Revised: 05/18/2023] [Accepted: 05/23/2023] [Indexed: 05/28/2023]
Abstract
Liraglutide has been recently discovered to penetrate the blood-brain barrier to exert neuroprotective effects. However, relevant mechanisms of the protective effects of liraglutide on ischaemic stroke remain to be elucidated. This study examined the mechanism of GLP-1R in regulating the protective effect of liraglutide against ischaemic stroke. Middle cerebral artery occlusion (MCAO) male Sprague-Dawley rat model with/without GLP-1R or Nrf2 knockdown was established and subjected to liraglutide treatment. Then neurological deficit and brain oedema of rats was evaluated and brain tissues were subjected to TTC, Nissl, TUNEL and immunofluorescence staining. Rat primary microglial cells firstly underwent lipopolysaccharide (LPS) treatment, then GLP-1R or Nrf2 knockdown treatment, and finally Liraglutide treatment to research the NLRP3 activation. As a result, Liraglutide protected rats' brain tissues after MCAO, which attenuated brain oedema, infarct volume, neurological deficit score, neuronal apoptosis and Iba1 expression but enhanced live neurons. However, GLP-1R knockdown abrogated these protective effects of liraglutide on MCAO rats. According to in vitro experiments, Liraglutide promoted M2 polarisation, activated Nrf2 and inhibited NLRP3 activation in LPS-induced microglial cells, but GLP-1R or Nrf2 knockdown reversed these effects of Liraglutide on LPS-induced microglial cells. Further, Nrf2 knockdown counteracted the protection of liraglutide on MCAO rats, whereas sulforaphane (agonist of Nrf2) counteracted the effect of Nrf2 knockdown on liraglutide-treated MCAO rats. Collectively, GLP-1R knockdown abrogated the protection of liraglutide on MCAO rats by activating NLRP3 via inactivating Nrf2.
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Affiliation(s)
- Xian-Kun Tu
- Department of Neurosurgery, Fujian Medical University Union Hospital, Neurosurgical Institute of Fujian Province, 29# Xinquan Road, Fuzhou, Fujian, 350001, China.
| | - Ping-Ping Chen
- Department of Neurosurgery, Fujian Medical University Union Hospital, Neurosurgical Institute of Fujian Province, 29# Xinquan Road, Fuzhou, Fujian, 350001, China
| | - Jing-Yi Chen
- Department of Neurosurgery, Fujian Medical University Union Hospital, Neurosurgical Institute of Fujian Province, 29# Xinquan Road, Fuzhou, Fujian, 350001, China
| | - Yi-Hang Ding
- Department of Neurosurgery, Fujian Medical University Union Hospital, Neurosurgical Institute of Fujian Province, 29# Xinquan Road, Fuzhou, Fujian, 350001, China
| | - Quan Chen
- Department of Neurosurgery, Fujian Medical University Union Hospital, Neurosurgical Institute of Fujian Province, 29# Xinquan Road, Fuzhou, Fujian, 350001, China
| | - Song-Sheng Shi
- Department of Neurosurgery, Fujian Medical University Union Hospital, Neurosurgical Institute of Fujian Province, 29# Xinquan Road, Fuzhou, Fujian, 350001, China
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Pan J, Peng J, Li X, Wang H, Rong X, Peng Y. Transmission of NLRP3-IL-1β Signals in Cerebral Ischemia and Reperfusion Injury: from Microglia to Adjacent Neuron and Endothelial Cells via IL-1β/IL-1R1/TRAF6. Mol Neurobiol 2023; 60:2749-2766. [PMID: 36717480 DOI: 10.1007/s12035-023-03232-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 01/12/2023] [Indexed: 02/01/2023]
Abstract
The pyrin domain-containing protein 3 (NLRP3) inflammasome drives the profound cerebral ischemia and reperfusion injury (I/R) and mediates the secretion of IL-1β (interleukin-1β), which exerts a subsequent cascade of inflammatory injury. The NLRP3-activated-microglial manipulation in adjacent neuronal and endothelial NLRP3 activation has been confirmed in our previous studies. In the present study, we extended the cognition of how microglia mediated neuronal and endothelial NLRP3-IL-1β signaling during cerebral ischemia and reperfusion injury. In vitro, Neuro-2a and bEND3 cells were cultured alone or co-cultured with BV2 cells and oxygen-glucose deprivation/reoxygenation (OGD/R) was performed. In vivo, transient middle cerebral artery occlusion (tMCAO) rat models and lentiviral silencing targeting IL-1R1 were performed. The NLRP3 inflammasome activation was evaluated by enzyme-linked immunosorbent assay, western blotting, immunoprecipitation, immunohistochemistry, and immunofluorescence. In the co-culture system after OGD/R treatment, NLRP3 inflammasomes in neurons and endothelial cells were activated by microglial IL-1β via IL-1β/IL-1R1/TRAF6 signaling pathway, with the basal protein level of NLRP3. In addition, ruptured lysosomes engulfing ASC specks which were possibly secreted from microglia triggered the enhanced NLRP3 expression. In cortices of tMCAO rats at 24 h of reperfusion, silencing IL-1R1, mainly presented in neurons and endothelial cells, was efficient to block the subsequent inflammatory damage and leukocyte brain infiltration, leading to better neurological outcome. Neuronal and endothelial NLRP3 inflammasomes were activated by microglia in cerebral ischemia and reperfusion injury mainly via IL-1β/IL-1R1/TRAF6 signaling, which might be therapeutically targetable.
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Affiliation(s)
- Jingrui Pan
- Department of Neurology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No. 107 West Yanjiang Road, Guangzhou, 510120, China
| | - Jialing Peng
- Department of Neurology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No. 107 West Yanjiang Road, Guangzhou, 510120, China
- Department of Neurology, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
| | - Xiangpen Li
- Department of Neurology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No. 107 West Yanjiang Road, Guangzhou, 510120, China
| | - Hongxuan Wang
- Department of Neurology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No. 107 West Yanjiang Road, Guangzhou, 510120, China
| | - Xiaoming Rong
- Department of Neurology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No. 107 West Yanjiang Road, Guangzhou, 510120, China
| | - Ying Peng
- Department of Neurology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No. 107 West Yanjiang Road, Guangzhou, 510120, China.
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.
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Li Y, Liu Y, Liu S, Gao M, Wang W, Chen K, Huang L, Liu Y. Diabetic vascular diseases: molecular mechanisms and therapeutic strategies. Signal Transduct Target Ther 2023; 8:152. [PMID: 37037849 PMCID: PMC10086073 DOI: 10.1038/s41392-023-01400-z] [Citation(s) in RCA: 72] [Impact Index Per Article: 72.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 02/19/2023] [Accepted: 02/28/2023] [Indexed: 04/12/2023] Open
Abstract
Vascular complications of diabetes pose a severe threat to human health. Prevention and treatment protocols based on a single vascular complication are no longer suitable for the long-term management of patients with diabetes. Diabetic panvascular disease (DPD) is a clinical syndrome in which vessels of various sizes, including macrovessels and microvessels in the cardiac, cerebral, renal, ophthalmic, and peripheral systems of patients with diabetes, develop atherosclerosis as a common pathology. Pathological manifestations of DPDs usually manifest macrovascular atherosclerosis, as well as microvascular endothelial function impairment, basement membrane thickening, and microthrombosis. Cardiac, cerebral, and peripheral microangiopathy coexist with microangiopathy, while renal and retinal are predominantly microangiopathic. The following associations exist between DPDs: numerous similar molecular mechanisms, and risk-predictive relationships between diseases. Aggressive glycemic control combined with early comprehensive vascular intervention is the key to prevention and treatment. In addition to the widely recommended metformin, glucagon-like peptide-1 agonist, and sodium-glucose cotransporter-2 inhibitors, for the latest molecular mechanisms, aldose reductase inhibitors, peroxisome proliferator-activated receptor-γ agonizts, glucokinases agonizts, mitochondrial energy modulators, etc. are under active development. DPDs are proposed for patients to obtain more systematic clinical care requires a comprehensive diabetes care center focusing on panvascular diseases. This would leverage the advantages of a cross-disciplinary approach to achieve better integration of the pathogenesis and therapeutic evidence. Such a strategy would confer more clinical benefits to patients and promote the comprehensive development of DPD as a discipline.
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Affiliation(s)
- Yiwen Li
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, Chinese Academy of Chinese Medical Sciences, Beijing, 100091, China
| | - Yanfei Liu
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, Chinese Academy of Chinese Medical Sciences, Beijing, 100091, China
- The Second Department of Gerontology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, 100091, China
| | - Shiwei Liu
- Department of Nephrology and Endocrinology, Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, 100102, China
| | - Mengqi Gao
- Department of Nephrology and Endocrinology, Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, 100102, China
| | - Wenting Wang
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, Chinese Academy of Chinese Medical Sciences, Beijing, 100091, China
| | - Keji Chen
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, Chinese Academy of Chinese Medical Sciences, Beijing, 100091, China.
| | - Luqi Huang
- China Center for Evidence-based Medicine of TCM, China Academy of Chinese Medical Sciences, Beijing, 100010, China.
| | - Yue Liu
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, Chinese Academy of Chinese Medical Sciences, Beijing, 100091, China.
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Huang R, Cai L, Ma X, Shen K. Autophagy-mediated circHIPK2 promotes lipopolysaccharide-induced astrocytic inflammation via SIGMAR1. Int Immunopharmacol 2023; 117:109907. [PMID: 36827915 DOI: 10.1016/j.intimp.2023.109907] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 02/06/2023] [Accepted: 02/14/2023] [Indexed: 02/24/2023]
Abstract
Circular RNAs (circRNAs) are a subclass of noncoding RNAs and widely involve in the occurrence of multiple human diseases. It is an urgent task to clarify circRNA upstream regulation mechanism and seek their biofunction. Our previous study has confirmed that circular RNA HIPK2 (circHIPK2) promotes astrocyte activation via SIGMAR1, sigma non-opioid intracellular receptor 1, in a mouse model of single high-dose lipopolysaccharide (LPS) injection. However, what mechanism circHIPK2 is regulated by and whether it is involved in the inflammatory response of astrocytes remain unclear. In this study, we reported that circHIPK2 and SIGMAR1 were significantly increased in mouse prefrontal cortex after multiple intraperitoneal injection of LPS, with the elevation of inflammatory mediators. Knockdown circHIPK2 in primary astrocytes suppressed the SIGMAR1 expression and inflammation. Pretreatment of autophagy inducer rapamycin on astrocytes suppressed the circHIPK2 expression and inactivated inflammatory response. These results implied that autophagy inducer rapamycin could suppress astrocytic inflammation by inactivating circHIPK2-SIGMAR1 axis. Autophagy may be a promising upstream administrator of circHIPK2 and therapeutic target for central nervous system inflammation.
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Affiliation(s)
- Rongrong Huang
- Department of Pharmacy, Affiliated Hospital of Nantong University, Nantong 226001, China.
| | - Liangliang Cai
- Department of Pharmacy, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Xiaofei Ma
- Department of Pharmacy, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Kai Shen
- Department of Pharmacy, Affiliated Hospital of Nantong University, Nantong 226001, China; College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China.
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Wang Q, Zheng J, Pettersson S, Reynolds R, Tan EK. The link between neuroinflammation and the neurovascular unit in synucleinopathies. SCIENCE ADVANCES 2023; 9:eabq1141. [PMID: 36791205 PMCID: PMC9931221 DOI: 10.1126/sciadv.abq1141] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Accepted: 01/19/2023] [Indexed: 05/28/2023]
Abstract
The neurovascular unit (NVU) is composed of vascular cells, glial cells, and neurons. As a fundamental functional module in the central nervous system, the NVU maintains homeostasis in the microenvironment and the integrity of the blood-brain barrier. Disruption of the NVU and interactions among its components are involved in the pathophysiology of synucleinopathies, which are characterized by the pathological accumulation of α-synuclein. Neuroinflammation contributes to the pathophysiology of synucleinopathies, including Parkinson's disease, multiple system atrophy, and dementia with Lewy bodies. This review aims to summarize the neuroinflammatory response of glial cells and vascular cells in the NVU. We also review neuroinflammation in the context of the cross-talk between glial cells and vascular cells, between glial cells and pericytes, and between microglia and astroglia. Last, we discuss how α-synuclein affects neuroinflammation and how neuroinflammation influences the aggregation and spread of α-synuclein and analyze different properties of α-synuclein in synucleinopathies.
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Affiliation(s)
- Qing Wang
- Department of Neurology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510282, China
| | - Jialing Zheng
- Department of Neurology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510282, China
| | - Sven Pettersson
- ASEAN Microbiome Nutrition Centre, National Neuroscience Institute, Singapore 308433, Singapore
- Karolinska Institutet, Department of Odontology, 171 77 Solna, Sweden
- Faculty of Medical Sciences, Sunway University, Subang Jaya, 47500 Selangor, Malaysia
- Department of Microbiology and Immunology, National University Singapore, Singapore 117545, Singapore
| | - Richard Reynolds
- Department of Brain Sciences, Imperial College London, Hammersmith Hospital Campus, Burlington Danes Building, Du Cane Road, London W12 0NN, UK
- Centre for Molecular Neuropathology, Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore
| | - Eng-King Tan
- Department of Neurology, National Neuroscience Institute, Singapore General Hospital, Duke-NUS Medical School, Singapore, Singapore
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Zhang L, Zhang W, Tian X. The pleiotropic of GLP-1/GLP-1R axis in central nervous system diseases. Int J Neurosci 2023; 133:473-491. [PMID: 33941038 DOI: 10.1080/00207454.2021.1924707] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Glucagon-like peptide-1(GLP-1) is a multifunctional polypeptide throughout the lifespan via activating Glucagon-like peptide-1 receptor (GLP-1R).GLP-1 can affect food ingestion, enhance the secretion of insulin from pancreatic islets induced by glucose and be utilized to treat type 2 diabetes mellitus(T2DM).But, accumulating evidences from the decades suggest that activation GLP-1R can not only regulate the blood glucose, but also sustain the homeostasis of intracellular environment and protect neuron from various damaged responses such as oxidative stress, inflammation, excitotoxicity, ischemia and so on. And more and more pre-clinical and clinical studies identified that GLP-1 and its analogues may play a significant role in improving multiple central nervous system (CNS) diseases including neurodegenerative diseases, epilepsy, mental disorders, ischemic stroke, hemorrhagic stroke, traumatic brain injury, spinal cord injury, chronic pain, addictive disorders, other diseases neurological complications and so on. In order to better reveal the relationship between GLP-1/GLP-1R axis and the growth, development and survival of neurons, herein, this review is aimed to summarize the multi-function of GLP-1/GLP-1R axis in CNS diseases.
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Affiliation(s)
- LongQing Zhang
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Wen Zhang
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - XueBi Tian
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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Duan H, Yun HJ, Rajah GB, Che F, Wang Y, Liu J, Tong Y, Cheng Z, Cai L, Geng X, Ding Y. Large vessel occlusion stroke outcomes in diabetic vs. non-diabetic patients with acute stress hyperglycemia. Front Neurosci 2023; 17:1073924. [PMID: 36777640 PMCID: PMC9911880 DOI: 10.3389/fnins.2023.1073924] [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: 10/19/2022] [Accepted: 01/06/2023] [Indexed: 01/28/2023] Open
Abstract
Objective This study assesses whether stress-induced hyperglycemia is a predictor of poor outcome at 3 months for patients with acute ischemic stroke (AIS) treated by endovascular treatment (EVT) and impacted by their previous blood glucose status. Methods This retrospective study collected data from 576 patients with AIS due to large vessel occlusion (LVO) treated by EVT from March 2019 to June 2022. The sample was composed of 230 and 346 patients with and without diabetes mellitus (DM), respectively, based on their premorbid diabetic status. Prognosis was assessed with modified Rankin Scale (mRS) at 3-month after AIS. Poor prognosis was defined as mRS>2. Stress-induced hyperglycemia was assessed by fasting glucose-to-glycated hemoglobin ratio (GAR). Each group was stratified into four groups by quartiles of GAR (Q1-Q4). Binary logistic regression analysis was used to identify relationship between different GAR quartiles and clinical outcome after EVT. Results In DM group, a poor prognosis was seen in 122 (53%) patients and GAR level was 1.27 ± 0.44. These variables were higher than non-DM group and the differences were statistically significant (p < 0.05, respectively). Patients with severe stress-induced hyperglycemia demonstrated greater incidence of 3-month poor prognosis (DM: Q1, 39.7%; Q2, 45.6%; Q3, 58.6%; Q4, 68.4%; p = 0.009. Non-DM: Q1, 31%; Q2, 32.6%; Q3, 42.5%; Q4, 64%; p < 0.001). However, the highest quartile of GAR was independently associated with poor prognosis at 3 months (OR 3.39, 95% CI 1.66-6.96, p = 0.001), compared to the lowest quartile in non-DM patients after logistic regression. This association was not observed from DM patients. Conclusion The outcome of patients with acute LVO stroke treated with EVT appears to be influenced by premorbid diabetes status. However, the poor prognosis at 3-month in patients with DM is not independently correlated with stress-induced hyperglycemia. This could be due to the long-term damage of persistent hyperglycemia and diabetic patients' adaptive response to stress following acute ischemic damage to the brain.
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Affiliation(s)
- Honglian Duan
- Department of Neurology, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Ho Jun Yun
- Department of Neurosurgery, School of Medicine, Wayne State University, Detroit, MI, United States
| | - Gary Benjamin Rajah
- Department of Neurosurgery, Munson Healthcare, Munson Medical Center, Traverse City, MI, United States
| | - Fengli Che
- Department of Neurology, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Yanling Wang
- Department of Neurology, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Jing Liu
- Department of Neurology, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Yanna Tong
- Department of Neurology, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Zhe Cheng
- Department of Neurology, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Lipeng Cai
- Department of Neurology, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Xiaokun Geng
- Department of Neurology, Beijing Luhe Hospital, Capital Medical University, Beijing, China,*Correspondence: Xiaokun Geng,
| | - Yuchuan Ding
- Department of Neurosurgery, School of Medicine, Wayne State University, Detroit, MI, United States,Yuchuan Ding,
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Gao L, Pan X, Zhang JH, Xia Y. Glial cells: an important switch for the vascular function of the central nervous system. Front Cell Neurosci 2023; 17:1166770. [PMID: 37206667 PMCID: PMC10188976 DOI: 10.3389/fncel.2023.1166770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 04/13/2023] [Indexed: 05/21/2023] Open
Abstract
In this review, we first describe the current understanding of glial-mediated vascular function affecting the role of the blood-brain barrier (BBB) in central nervous system (CNS) disorders. BBB, mainly composed of glial and endothelial cells (ECs), is the protective structure that orchestrates the transport of substances, including ions, molecules, and cells from brain vessels into or out of the CNS. Then, we display the multiple communication between glial and vascular function based on angiogenesis, vascular wrapping, and blood perfusion in the brain. Glial can support microvascular ECs to form a blood network connecting to neurons. Astrocytes, microglia, and oligodendrocytes are the common types of glial surrounding the brain vessel. Glial-vessel interaction is required for the permeability and integrity of BBB. Glial cells surrounding the cerebral blood vessels can transmit communication signals to ECs and regulate the activity of vascular endothelial growth factor (VEGF) or Wnt-dependent endothelial angiogenesis mechanism. In addition, these glial cells monitor the blood flow in the brain via Ca2+/K+-dependent pathways. Finally, we provide a potential research direction for the glial-vessel axis in CNS disorders. Microglial activation can trigger astrocyte activation, which suggests that microglia-astrocyte interaction may play a key role in monitoring cerebral blood flow. Thus, microglia-astrocyte interaction can be the key point of follow-up studies focusing on the microglia-blood mechanism. More investigations focus on the mechanism of how oligodendrocyte progenitor cells communicate and interact with ECs. The direct role of oligodendrocytes in modulating vascular function needs to be explored in the future.
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Affiliation(s)
- Ling Gao
- Department of Neurosurgery, Affiliated Haikou Hospital, Xiangya School of Medicine, Central South University, Haikou, China
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA, United States
| | - Xuezhen Pan
- Department of Neurosurgery, Affiliated Haikou Hospital, Xiangya School of Medicine, Central South University, Haikou, China
| | - John H. Zhang
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA, United States
- John H. Zhang,
| | - Ying Xia
- Department of Neurosurgery, Affiliated Haikou Hospital, Xiangya School of Medicine, Central South University, Haikou, China
- *Correspondence: Ying Xia,
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Wu H, Ou Y, Wang S, Yu F, Fan X, Kang H, Chen T. Considering the protective effect of exendin-4 against oxidative stress in spiral ganglion neurons. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2023; 26:1423-1430. [PMID: 37970444 PMCID: PMC10634057 DOI: 10.22038/ijbms.2023.69190.15076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 05/30/2023] [Indexed: 11/17/2023]
Abstract
Objectives The protection of spiral ganglion neurons (SGNs) is crucial for hearing loss. Exendin-4 has been shown to have neuroprotective effects in several neurological disorders. Therefore, this study aimed to investigate the effect of the glucagon-like protein-1 receptor (GLP-1R) agonist exendin-4 on kanamycin-induced injury in mouse SGNs in vitro. Materials and Methods In this study, GLP-1R expression in SGNs was verified by immunofluorescence and immunohistochemical staining. In vitro-cultured SGNs and the organ of Corti were exposed to kanamycin with or without exendin-4 treatment. The cell survival rate was measured using the cell counting kit-8 assay, and the damage to auditory nerve fibers (ANF) projecting radially from the SGNs was evaluated using immunofluorescence staining. Reactive oxygen species (ROS) content was determined by flow cytometry, and glutathione peroxidase (GSH-Px) content, superoxide dismutase (SOD) activity, and malondialdehyde (MDA) content were determined by spectrophotometry. Protein expression of nuclear factor erythroid-2-related factor 2/heme oxygenase-1 (Nrf2/HO-1) was detected using western blotting. Results GLP-1R was expressed in SGNs. Treatment with 1 mM kanamycin for 24 hr induced SGN damage. Exendin-4 (100 nM) had a protective effect against kanamycin-induced SGN cell injury, improved cell survival rate, reduced nerve fiber injury, increased SOD activity and GSH-Px level, and reduced MDA and ROS contents. The Nrf2/HO-1 pathway was activated. Conclusion Exendin-4 alleviates oxidative damage and exerts neuroprotective effects in kanamycin-induced SGN injury through the Nrf2/HO-1 signaling pathway. Exendin-4 has the potential to prevent or treat hearing loss due to SGN damage.
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Affiliation(s)
- Hongxia Wu
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical Chongqing, China
| | - Yangxi Ou
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical Chongqing, China
| | - Siji Wang
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical Chongqing, China
| | - Fenghui Yu
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical Chongqing, China
| | - Xiaoxia Fan
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical Chongqing, China
| | - Houyong Kang
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical Chongqing, China
| | - Tao Chen
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical Chongqing, China
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Li J, Ji C, Zhang W, Lan L, Ge W. Effect of new glucose-lowering drugs on stroke in patients with type 2 diabetes: A systematic review and Meta-analysis. J Diabetes Complications 2023; 37:108362. [PMID: 36462459 DOI: 10.1016/j.jdiacomp.2022.108362] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 11/20/2022] [Accepted: 11/23/2022] [Indexed: 11/29/2022]
Abstract
AIMS People with diabetes tend to face a higher risk of stroke. Randomized controlled trials (RCTs) have demonstrated the different outcomes of new glucose-lowering drugs marketed in recent years on cardiovascular outcome events. The effects of glucagon-like peptide-1 (GLP-1) agonists, sodium-glucose cotransporter-2 (SGLT-2) inhibitors, and dipeptidyl peptidase-4 (DPP-4) inhibitors on stroke risk were evaluated in published RCTs. METHODS A search of Embase, Cochrane Library, and PubMed databases identified studies with stroke as an outcome event up to 3 December 2021. Risk ratios for stroke outcomes were analyzed using a fixed-effects model. I2 was used to assess the heterogeneity of the study. RESULTS 19 RCTs with 155,027 participants with type 2 diabetes were identified. Pooled analysis showed that compared to placebo, GLP-1 agonists reduced non-fatal stroke by 15 % (RR = 0.85, 95%CI 0.77-0.94, P = 0.002, I2 = 0 %) and total stroke (RR = 0.84, 95%CI 0.77-0.93, P = 0.000, I2 = 0 %) by 16 %. SGLT-2 inhibitors and DPP-4 inhibitors were not significantly associated with lower stroke risk. CONCLUSIONS This meta-analysis indicates that GLP-1 agonists have potential benefits for stroke. However, further studies are needed if GLP-1 agonists are to be used to reduce the risk of stroke in patients with type 2 diabetes. More research is also needed to investigate the effects of new glucose-lowering drugs on different stroke subtypes. SYSTEMATIC REVIEW REGISTRATION This protocol was registered on the International Prospective Register of Systematic Reviews (https://www.crd.york.ac.uk/PROSPERO/; registration number: CRD42022326382).
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Affiliation(s)
- Jiaxi Li
- School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China; Department of Pharmacy, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China
| | - Cheng Ji
- Department of Pharmacy, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China
| | - Wen Zhang
- Department of Radiology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China
| | - Linyan Lan
- School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China; Department of Pharmacy, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China
| | - Weihong Ge
- Department of Pharmacy, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China.
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Yao M, Hao Y, Wang T, Xie M, Li H, Feng J, Feng L, Ma D. A review of stress-induced hyperglycaemia in the context of acute ischaemic stroke: Definition, underlying mechanisms, and the status of insulin therapy. Front Neurol 2023; 14:1149671. [PMID: 37025208 PMCID: PMC10070880 DOI: 10.3389/fneur.2023.1149671] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Accepted: 02/21/2023] [Indexed: 04/08/2023] Open
Abstract
The transient elevation of blood glucose produced following acute ischaemic stroke (AIS) has been described as stress-induced hyperglycaemia (SIH). SIH is common even in patients with AIS who have no previous diagnosis of diabetes mellitus. Elevated blood glucose levels during admission and hospitalization are strongly associated with enlarged infarct size and adverse prognosis in AIS patients. However, insulin-intensive glucose control therapy defined by admission blood glucose for SIH has not achieved the desired results, and new treatment ideas are urgently required. First, we explore the various definitions of SIH in the context of AIS and their predictive value in adverse outcomes. Then, we briefly discuss the mechanisms by which SIH arises, describing the dual effects of elevated glucose levels on the central nervous system. Finally, although preclinical studies support lowering blood glucose levels using insulin, the clinical outcomes of intensive glucose control are not promising. We discuss the reasons for this phenomenon.
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Affiliation(s)
- Mengyue Yao
- Department of Neurology and Neuroscience Centre, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Yulei Hao
- Department of Neurology and Neuroscience Centre, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Tian Wang
- Department of Neurology and Neuroscience Centre, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Meizhen Xie
- Department of Neurology and Neuroscience Centre, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Hui Li
- Department of Neurology and Neuroscience Centre, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Jiachun Feng
- Department of Neurology and Neuroscience Centre, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Liangshu Feng
- Stroke Centre, Department of Neurology, The First Hospital of Jilin University, Changchun, Jilin, China
- Liangshu Feng
| | - Di Ma
- Department of Neurology and Neuroscience Centre, The First Hospital of Jilin University, Changchun, Jilin, China
- *Correspondence: Di Ma
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Ellis RJ, Fan Y, Grelotti D, Tang B, Letendre S, He JJ. Astrocyte Activation is A Potential Mechanism Underlying Depressed Mood and Apathy in People with HIV. JOURNAL OF NEUROLOGY AND PSYCHOLOGY 2022; 9:05. [PMID: 37205974 PMCID: PMC10194432 DOI: 10.13188/2332-3469.1000048] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Background Astrocytes become activated with certain infections, and this might alter the brain to trigger or worsen depressed mood. Indeed, astrocytes are chronically activated in people with HIV infection (PWH), who are much more frequently depressed than people without HIV (PWoH). A particularly disabling component of depression in PWH is apathy, a loss of interest, motivation, emotion, and goal-directed behavior. We tested the hypothesis that depression and apathy in PWH would be associated with higher levels of a biomarker of astrocyte activation, glial fibrillary acidic protein (GFAP), in cerebrospinal fluid (CSF). Methods We evaluated PWH in a prospective observational study using the Beck Depression Inventory-II (BDI-II) and additional standardized assessments, including lumbar puncture. We measured GFAP in CSF with a customized direct sandwich ELISA method. Data were analyzed using ANOVA and multivariable regression. Results Participants were 212 PWH, mean (SD) age 40.9±9.14 years, median (IQR) nadir and current CD4 199 (57, 326) and 411 (259, 579), 65.1% on ART, 67.3% virally suppressed. Higher CSF GFAP correlated with worse total BDI-II total scores (Pearson correlation r=0.158, p-value=0.0211), and with worse apathy scores (r=0.205, p=0.0027). The correlation between apathy/depression and GFAP was not in fluenced by other factors such as age or HIV suppression status. Conclusions Astrocyte activation, reflected in higher levels of CSF GFAP, was associated with worse depression and apathy in PWH. Interventions to reduce astrocyte activation -- for example, using a peptide-1 receptor (GLP-1R) agonist -- might be studied to evaluate their impact on disabling depression in PWH.
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Affiliation(s)
- Ronald J. Ellis
- Departments of Neurosciences and Psychiatry, University of California, San Diego, CA, United States
| | - Yan Fan
- Department of Ophthalmology, UT Southwestern Medical Center, Dallas TX, United States
| | - David Grelotti
- Department of Psychiatry, University of California, San Diego, CA, United States
| | - Bin Tang
- Department of Psychiatry, University of California, San Diego, CA, United States
| | - Scott Letendre
- Departments of Medicine and Psychiatry, University of California, San Diego, CA, United States
| | - Johnny J. He
- Department of Microbiology and Immunology, Chicago Medical School Rosalind Franklin University, North Chicago, IL, United States
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Qiu L, Cai Y, Geng Y, Yao X, Wang L, Cao H, Zhang X, Wu Q, Kong D, Ding D, Shi Y, Wang Y, Wu J. Mesenchymal stem cell-derived extracellular vesicles attenuate tPA-induced blood-brain barrier disruption in murine ischemic stroke models. Acta Biomater 2022; 154:424-442. [PMID: 36367475 DOI: 10.1016/j.actbio.2022.10.022] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 09/24/2022] [Accepted: 10/11/2022] [Indexed: 12/14/2022]
Abstract
Intracerebral hemorrhage following blood-brain barrier (BBB) disruption resulting from thrombolysis of ischemic stroke with tissue plasminogen activator (tPA) remains a critical clinical problem. Mesenchymal stem cell-derived extracellular vesicles (MSC-EVs) are promising nanotherapeutic agents that have the potential to repair the BBB after ischemic stroke; however, whether they can attenuate BBB disruption and hemorrhagic transformation after tPA thrombolysis is largely unknown. Here, we observed that MSC-EVs efficiently passed through the BBB and selectively accumulated in injured brain regions in ischemic stroke model mice in real time using aggregation-induced emission luminogens (AIEgens), which exhibit better tracking ability than the commercially available tracer DiR. Moreover, tPA administration promoted the homing of MSC-EVs to the ischemic brain and increased the uptake of MSC-EVs by astrocytes. Furthermore, the accumulated MSC-EVs attenuated the tPA-induced disruption of BBB integrity and alleviated hemorrhage by inhibiting astrocyte activation and inflammation. Mechanistically, miR-125b-5p delivered by MSC-EVs played an indispensable role in maintaining BBB integrity by targeting Toll-like receptor 4 (TLR4) and inhibiting nuclear transcription factor-kappaB (NF-κB) signaling in astrocytes. This study provides a noninvasive method for real-time tracking of MSC-EVs in the ischemic brain after tPA treatment and highlights the potential of MSC-EVs as thrombolytic adjuvants for ischemic stroke. STATEMENT OF SIGNIFICANCE: Although tPA thrombolysis is the most effective pharmaceutical strategy for acute ischemic stroke, its clinical application and therapeutic efficacy are challenged by tPA-induced BBB disruption and hemorrhagic transformation. Our study demonstrated that MSC-EVs can act as an attractive thrombolytic adjuvant to repair the BBB and improve thrombolysis in a mouse ischemic stroke model. Notably, by labeling MSC-EVs with AIEgens, we achieved accurate real-time imaging of MSC-EVs in the ischemic brain and therapeutic visualization. MSC-EVs inhibit astrocyte activation and associated inflammation through miR-125b-5p/TLR4/NF-κB pathway. Consequently, we revealed that MSC-EVs combined with tPA thrombolysis may be a promising approach for the treatment of ischemic stroke in clinical setting.
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Affiliation(s)
- Lina Qiu
- Department of Neurology, Tianjin Huanhu Hospital, Tianjin 300350, China; Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin Neurosurgical Institute, Tianjin Huanhu Hospital, Tianjin 300350, China
| | - Ying Cai
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin Neurosurgical Institute, Tianjin Huanhu Hospital, Tianjin 300350, China
| | - Yanqin Geng
- Nankai University School of Medicine, Tianjin 300071, China
| | - Xiuhua Yao
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin Neurosurgical Institute, Tianjin Huanhu Hospital, Tianjin 300350, China
| | - Lanxing Wang
- Nankai University School of Medicine, Tianjin 300071, China
| | - Hongmei Cao
- Key Laboratory of Radiopharmacokinetics for Innovative Drugs, Chinese Academy of Medical Sciences, and Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Xuebin Zhang
- Department of Pathology, Tianjin Huanhu Hospital, Tianjin 300350, China
| | - Qiaoli Wu
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin Neurosurgical Institute, Tianjin Huanhu Hospital, Tianjin 300350, China
| | - Deling Kong
- The Key Laboratory of Bioactive Materials, Ministry of Education, Nankai University, The College of Life Science, Tianjin 300071, China
| | - Dan Ding
- The Key Laboratory of Bioactive Materials, Ministry of Education, Nankai University, The College of Life Science, Tianjin 300071, China
| | - Yang Shi
- The Key Laboratory of Bioactive Materials, Ministry of Education, Nankai University, The College of Life Science, Tianjin 300071, China.
| | - Yuebing Wang
- Nankai University School of Medicine, Tianjin 300071, China; Institute of Transplant Medicine, Tianjin First Central Hospital, Nankai University, Tianjin 300192, China.
| | - Jialing Wu
- Department of Neurology, Tianjin Huanhu Hospital, Tianjin 300350, China; Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin Neurosurgical Institute, Tianjin Huanhu Hospital, Tianjin 300350, China.
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Kopp KO, Glotfelty EJ, Li Y, Greig NH. Glucagon-like peptide-1 (GLP-1) receptor agonists and neuroinflammation: Implications for neurodegenerative disease treatment. Pharmacol Res 2022; 186:106550. [PMID: 36372278 PMCID: PMC9712272 DOI: 10.1016/j.phrs.2022.106550] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/03/2022] [Accepted: 11/06/2022] [Indexed: 11/13/2022]
Abstract
Chronic, excessive neuroinflammation is a key feature of neurodegenerative diseases such as Alzheimer's disease (AD) and Parkinson's disease (PD). However, neuroinflammatory pathways have yet to be effectively targeted in clinical treatments for such diseases. Interestingly, increased inflammation and neurodegenerative disease risk have been associated with type 2 diabetes mellitus (T2DM) and insulin resistance (IR), suggesting that treatments that mitigate T2DM pathology may be successful in treating neuroinflammatory and neurodegenerative pathology as well. Glucagon-like peptide-1 (GLP-1) is an incretin hormone that promotes healthy insulin signaling, regulates blood sugar levels, and suppresses appetite. Consequently, numerous GLP-1 receptor (GLP-1R) stimulating drugs have been developed and approved by the US Food and Drug Administration (FDA) and related global regulatory authorities for the treatment of T2DM. Furthermore, GLP-1R stimulating drugs have been associated with anti-inflammatory, neurotrophic, and neuroprotective properties in neurodegenerative disorder preclinical models, and hence hold promise for repurposing as a treatment for neurodegenerative diseases. In this review, we discuss incretin signaling, neuroinflammatory pathways, and the intersections between neuroinflammation, brain IR, and neurodegenerative diseases, with a focus on AD and PD. We additionally overview current FDA-approved incretin receptor stimulating drugs and agents in development, including unimolecular single, dual, and triple receptor agonists, and highlight those in clinical trials for neurodegenerative disease treatment. We propose that repurposing already-approved GLP-1R agonists for the treatment of neurodegenerative diseases may be a safe, efficacious, and cost-effective strategy for ameliorating AD and PD pathology by quelling neuroinflammation.
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Affiliation(s)
- Katherine O Kopp
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, United States.
| | - Elliot J Glotfelty
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, United States; Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Yazhou Li
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, United States
| | - Nigel H Greig
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, United States.
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Wang C, Tian C, Cai D, Jiang H, Zhang W, Liu S, Peng L, Hu X. BDNF-overexpressing MSCs delivered by hydrogel in acute ischemic stroke treatment. ANNALS OF TRANSLATIONAL MEDICINE 2022; 10:1393. [PMID: 36660688 PMCID: PMC9843400 DOI: 10.21037/atm-22-5921] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 12/19/2022] [Indexed: 01/01/2023]
Abstract
Background Ischemic stroke treatment is a challenge worldwide. The efficacy and safety of mesenchymal stem cells (MSCs) for stroke have been confirmed. However, poor survival of MSCs in the ischemic environment limits the therapy efficacy. Changes in MSC status in the ischemic environment after transplantation is difficult to monitor. This study aimed to deliver brain-derived neurotrophic factor (BDNF)-overexpressing MSCs by hydrogel (H-B-MSCs) to promote recovery after ischemic stroke. Methods MSCs were transfected with lentivirus carrying luc2 and BDNF cassette. The properties of hydrogel were tested after synthesis with thiolated gelatin (Gel-SH), thiolated hyaluronic acid (HA-SH), and polyethylene glycol diacrylate (PEGDA). Oxygen-glucose deprivation (OGD) test was carried out to confirm the protective effects of hydrogel in the ischemic environment. Three days after stroke induction, H-B-MSCs, hydrogel carrying MSCs (H-MSCs), or phosphate-buffered saline (PBS) was injected into the brains of mice, respectively. Bioluminescence imaging (BLI) was performed at 3, 7, 14, and 21 days post-cell-transplantation to monitor the dynamic status of MSCs. In the meantime, histology, quantitative polymerase chain reaction (qPCR), enzyme-linked immunosorbent assay (ELISA), western blot, and behavior tests were carried out at different time points. Results Hydrogel with good biocompatibility was synthesized. Lentivirus transfection significantly increased the expression of BDNF. BDNF-MSCs could be tracked by BLI in vitro. In vitro OGD/reperfusion (OGD/R) test results suggested that MSCs carried by hydrogel could survive longer in an environment with low oxygen and glucose. H-B-MSCs significantly improved functional recovery after ischemic stroke. Furthermore, H-B-MSCs treatment promoted neurogenesis, white matter recovery, and angiogenesis after ischemic stroke. MSC dynamics could be monitored in vivo with BLI. Conclusions We effectively established a robust MSC delivery system with hydrogel. Prolonged survival of transplanted BDNF-MSCs with a hydrogel delivery system could promote the recovery of ischemic stroke via the continuous release of BDNF.
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Affiliation(s)
- Congxiao Wang
- Department of Interventional Medical Center, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Chuan Tian
- Department of Interventional Medical Center, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Duo Cai
- Medical Animal Lab, Medical Research Center, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Han Jiang
- Department of Interventional Medical Center, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Wei Zhang
- Department of Interventional Medical Center, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Shifeng Liu
- Department of Interventional Medical Center, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Lijing Peng
- Department of Clinical Laboratory, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiaokun Hu
- Department of Interventional Medical Center, the Affiliated Hospital of Qingdao University, Qingdao, China
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