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Cui Y, Rolova T, Fagerholm SC. The role of integrins in brain health and neurodegenerative diseases. Eur J Cell Biol 2024; 103:151441. [PMID: 39002282 DOI: 10.1016/j.ejcb.2024.151441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 06/28/2024] [Accepted: 07/02/2024] [Indexed: 07/15/2024] Open
Abstract
Integrins are heterodimeric membrane proteins expressed on the surface of most cells. They mediate adhesion and signaling processes relevant for a wealth of physiological processes, including nervous system development and function. Interestingly, integrins are also recognized therapeutic targets for inflammatory diseases, such as multiple sclerosis. Here, we discuss the role of integrins in brain development and function, as well as in neurodegenerative diseases affecting the brain (Alzheimer's disease, multiple sclerosis, stroke). Furthermore, we discuss therapeutic targeting of these adhesion receptors in inflammatory diseases of the brain.
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Affiliation(s)
- Yunhao Cui
- Molecular and Integrative Biosciences Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki 00790, Finland
| | - Taisia Rolova
- Neuroscience Center, HiLIFE, University of Helsinki, Helsinki 00290, Finland
| | - Susanna C Fagerholm
- Molecular and Integrative Biosciences Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki 00790, Finland.
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2
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Gao F, Du W, Guo C, Geng P, Liu W, Jin X. α7nACh receptor, a promising target to reduce BBB damage by regulating inflammation and autophagy after ischemic stroke. Biomed Pharmacother 2024; 179:117337. [PMID: 39191022 DOI: 10.1016/j.biopha.2024.117337] [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: 05/04/2024] [Revised: 08/13/2024] [Accepted: 08/21/2024] [Indexed: 08/29/2024] Open
Abstract
Increased blood-brain barrier (BBB) permeability can lead to cerebral vasogenic edema and hemorrhagic transformation (HT) after reperfusion with tissue plasminogen activator (tPA), the only United States Food and Drug Administration (FDA)-approved treatment for acute ischemia stroke (AIS). The therapeutic benefits of tPA after AIS are partially outweighed by a more than a six-fold increase in the risk of symptomatic intracerebral hemorrhage. Therefore, strategies to protect the integrity of BBB are urgently needed to reduce HT and vasogenic edema after tPA thrombolysis or endovascular thrombectomy. Interestingly, an NIH study showed that smokers treated with tPA had a significantly lower prevalence of brain hemorrhage than nonsmokers, suggesting that cigarette smoking may protect patients treated with tPA from the side effects of cerebral hemorrhage. Importantly, we recently showed that treatment with nicotine reduces AIS-induced BBB damage and that modulating α7nAChR by modulation could reduce ischemia/reperfusion-induced BBB damage, suggesting that α7nAChR could be a potential target to reduce BBB after AIS. In this review, we first provide an overview of stroke and the impact of α7nAChR activation on BBB damage. Next, we discuss the features and mechanism of BBB destruction after AIS. We then discuss the effect of nicotine effect on BBB integrity as well as the mechanism underlying those effects. Finally, we discuss the side effects and potential strategies for modulating α7nAChR to reduce AIS-induced BBB damage.
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Affiliation(s)
- Fengying Gao
- Department of Emergency, Shanxi Provincial People's Hospital, Taiyuan 030001, China
| | - Weihong Du
- Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Department of Histology and Embryology, School of Basic Medical Sciences, Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing 100069, China
| | - Chun Guo
- School of Biosciences, University of Sheffield, Firth Court, Western Bank, Sheffield, UK
| | - Panpan Geng
- Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Department of Histology and Embryology, School of Basic Medical Sciences, Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing 100069, China
| | - Wencao Liu
- Department of Emergency, Shanxi Provincial People's Hospital, Taiyuan 030001, China.
| | - Xinchun Jin
- Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Department of Histology and Embryology, School of Basic Medical Sciences, Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing 100069, China.
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Wang G, Li Z, Wang G, Sun Q, Lin P, Wang Q, Zhang H, Wang Y, Zhang T, Cui F, Zhong Z. Advances in Engineered Nanoparticles for the Treatment of Ischemic Stroke by Enhancing Angiogenesis. Int J Nanomedicine 2024; 19:4377-4409. [PMID: 38774029 PMCID: PMC11108071 DOI: 10.2147/ijn.s463333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 05/02/2024] [Indexed: 05/24/2024] Open
Abstract
Angiogenesis, or the formation of new blood vessels, is a natural defensive mechanism that aids in the restoration of oxygen and nutrition delivery to injured brain tissue after an ischemic stroke. Angiogenesis, by increasing vessel development, may maintain brain perfusion, enabling neuronal survival, brain plasticity, and neurologic recovery. Induction of angiogenesis and the formation of new vessels aid in neurorepair processes such as neurogenesis and synaptogenesis. Advanced nano drug delivery systems hold promise for treatment stroke by facilitating efficient transportation across the the blood-brain barrier and maintaining optimal drug concentrations. Nanoparticle has recently been shown to greatly boost angiogenesis and decrease vascular permeability, as well as improve neuroplasticity and neurological recovery after ischemic stroke. We describe current breakthroughs in the development of nanoparticle-based treatments for better angiogenesis therapy for ischemic stroke employing polymeric nanoparticles, liposomes, inorganic nanoparticles, and biomimetic nanoparticles in this study. We outline new nanoparticles in detail, review the hurdles and strategies for conveying nanoparticle to lesions, and demonstrate the most recent advances in nanoparticle in angiogenesis for stroke treatment.
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Affiliation(s)
- Guangtian Wang
- Teaching Center of Pathogenic Biology, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang, 150081, People’s Republic of China
- Department of Microbiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang, 150081, People’s Republic of China
| | - Zhihui Li
- Department of Neurology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, 150086, People’s Republic of China
| | - Gongchen Wang
- Department of Vascular Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, 150086, People’s Republic of China
| | - Qixu Sun
- Department of Gastroenterology, Penglai People’s Hospital, Yantai, Shandong, 265600, People’s Republic of China
| | - Peng Lin
- Teaching Center of Pathogenic Biology, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang, 150081, People’s Republic of China
| | - Qian Wang
- Department of Microbiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang, 150081, People’s Republic of China
| | - Huishu Zhang
- Teaching Center of Biotechnology, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang, 150081, People’s Republic of China
| | - Yanyan Wang
- Teaching Center of Morphology, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang, 150081, People’s Republic of China
| | - Tongshuai Zhang
- Department of Neurobiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang, 150081, People’s Republic of China
| | - Feiyun Cui
- Department of Physiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang, 150081, People’s Republic of China
| | - Zhaohua Zhong
- Teaching Center of Pathogenic Biology, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang, 150081, People’s Republic of China
- Department of Microbiology, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang, 150081, People’s Republic of China
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Ding L, Hou B, Zang J, Su T, Feng F, Zhu Z, Peng B. Imaging of Angiogenesis in White Matter Hyperintensities. J Am Heart Assoc 2023; 12:e028569. [PMID: 37889177 PMCID: PMC10727415 DOI: 10.1161/jaha.122.028569] [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: 10/20/2022] [Accepted: 09/19/2023] [Indexed: 10/28/2023]
Abstract
Background White matter hyperintensities (WMHs) are areas of increased signal intensity on T2-weighted magnetic resonance imaging (MRI). WMH penumbra may be a potential target for early intervention in WMHs. We explored the relationship between angiogenesis and WMH penumbra in patients with WMHs. Methods and Results Twenty-one patients with confluent WMHs of Fazekas grade ≥2 were included. All the participants underwent 68Ga-NOTA-PRGD2 positron emission tomography/magnetic resonance imaging. WMH penumbra was analyzed with masks created for the WMH and 7 normal-appearing white matter layers; each layer was dilated away from the WMH by 2 mm. Angiogenesis array and ELISA were used to detect the serum levels of angiogenic factors, inflammatory factors, HIF-1 alpha, and S100B. Fourteen patients with increased 68Ga-NOTA-PRGD2 maximum standardized uptake (>0.17) were classified into group 2. Seven patients with maximum standardized uptake ≤0.17 were classified as group 1. WMH volume and serum levels of integrin αvβ3, vascular endothelial growth factor receptor 22, and interleukin-1β tended to be higher in group 2 than in group 1. In group 2, 68Ga-NOTA-PRGD2 uptake was significantly increased at the border between the WMH and normal-appearing white matter than in WMHs (P=0.004). The structure penumbra, defined by fractional anisotropy, was wider in group 2 (8 mm) than in group 1 (2 mm). The cerebral blood flow penumbra was 12 mm in both groups. Angiogenesis showed a correlation with reduced cerebral blood flow and microstructure integrity. Conclusions Our study provides evidence that angiogenesis occurs in the WMH penumbra. Further studies are warranted to verify the effect of angiogenesis on WMH growth.
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Affiliation(s)
- Lingling Ding
- Department of NeurologyBeijing Tiantan Hospital, Capital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesBeijingChina
| | - Bo Hou
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical CollegeBeijingChina
| | - Jie Zang
- Department of Nuclear MedicinePeking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical CollegeBeijingChina
| | - Tong Su
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical CollegeBeijingChina
| | - Feng Feng
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical CollegeBeijingChina
| | - Zhaohui Zhu
- Department of Nuclear MedicinePeking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical CollegeBeijingChina
| | - Bin Peng
- Department of NeurologyPeking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical CollegeBeijingChina
- Department of NeurologyState Key Laboratory of Complex Severe and Rare DiseasesBeijingChina
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Zeng M, Peng M, Liang J, Sun H. The Role of Gut Microbiota in Blood-Brain Barrier Disruption after Stroke. Mol Neurobiol 2023:10.1007/s12035-023-03512-7. [PMID: 37498481 DOI: 10.1007/s12035-023-03512-7] [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: 05/03/2023] [Accepted: 07/13/2023] [Indexed: 07/28/2023]
Abstract
Growing evidence has proved that alterations in the gut microbiota have been linked to neurological disorders including stroke. Structural and functional disruption of the blood-brain barrier (BBB) is observed after stroke. In this context, there is pioneering evidence supporting that gut microbiota may be involved in the pathogenesis of stroke by regulating the BBB function. However, only a few experimental studies have been performed on stroke models to observe the BBB by altering the structure of gut microbiota, which warrant further exploration. Therefore, in order to provide a novel mechanism for stroke and highlight new insights into BBB modification as a stroke intervention, this review summarizes existing evidence of the relationship between gut microbiota and BBB integrity and discusses the mechanisms of gut microbiota on BBB dysfunction and its role in stroke.
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Affiliation(s)
- Meiqin Zeng
- Clinical Biobank Center, Microbiome Medicine Center, Department of Laboratory Medicine, Guangdong Provincial Clinical Research Center for Laboratory Medicine, Zhujiang Hospital, Southern Medical University, 510280, Guangzhou, China
- Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China On Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory On Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Meichang Peng
- Clinical Biobank Center, Microbiome Medicine Center, Department of Laboratory Medicine, Guangdong Provincial Clinical Research Center for Laboratory Medicine, Zhujiang Hospital, Southern Medical University, 510280, Guangzhou, China
- Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China On Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory On Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Jianhao Liang
- Clinical Biobank Center, Microbiome Medicine Center, Department of Laboratory Medicine, Guangdong Provincial Clinical Research Center for Laboratory Medicine, Zhujiang Hospital, Southern Medical University, 510280, Guangzhou, China
- Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China On Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory On Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Haitao Sun
- Clinical Biobank Center, Microbiome Medicine Center, Department of Laboratory Medicine, Guangdong Provincial Clinical Research Center for Laboratory Medicine, Zhujiang Hospital, Southern Medical University, 510280, Guangzhou, China.
- Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China On Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory On Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China.
- Key Laboratory of Mental Health of the Ministry of Education, Guangdong-Hong Kong-Macao Greater Bay Area Centre for Brain Science and Brain-Inspired Intelligence, Southern Medical University, Guangzhou, China.
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Zuo B, Zhu S, Wang G, Li Z. Transcriptome analysis reveals ADAMTS15 is a potential inflammation-related gene in remote ischemic postconditioning. Front Cardiovasc Med 2023; 10:1089151. [PMID: 37234367 PMCID: PMC10206167 DOI: 10.3389/fcvm.2023.1089151] [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: 11/03/2022] [Accepted: 04/17/2023] [Indexed: 05/27/2023] Open
Abstract
Background Remote ischemic postconditioning (RIPostC) induced by brief episodes of the limb ischemia is a potential therapeutic strategy for myocardial ischemia/reperfusion injury, achieved by reducing cardiomyocyte death, inflammation and so on. The actual mechanisms underlying cardioprotection conferred by RIPostC remain unclear. Exploring gene expression profiles in myocardium at transcriptional level is helpful to deepen the understanding on the cardioprotective mechanisms of RIPostC. This study aims to investigate the effect of RIPostC on gene expressions in rat myocardium using transcriptome sequencing. Methods Rat myocardium samples from the RIPostC group, the control group (myocardial ischemia/reperfusion group) and the sham group were performed transcriptome analysis using RNA sequencing. The levels of cardiac IL-1β, IL-6, IL-10 and TNFα were analyzed by Elisa. The expression levels of candidate genes were verified by qRT-PCR technique. Infarct size was measured by Evans blue and TTC staining. Apoptosis was assessed by TUNEL assays and caspase-3 levels were detected using western blotting. Results RIPostC can markedly decrease infarct size and reduce the levels of cardiac IL-1β, IL-6 and increase the level of cardiac IL-10. This transcriptome analysis showed that 2 genes were up-regulated (Prodh1 and ADAMTS15) and 5 genes (Caspase-6, Claudin-5, Sccpdh, Robo4 and AABR07011951.1) were down-regulated in the RIPostC group. Go annotation analysis showed that Go terms mainly included cellular process, metabolic process, cell part, organelle, catalytic activity and binding. The KEGG annotation analysis of DEGs found only one pathway, amino acid metabolism, was up-regulated. The relative mRNA expression levels of ADAMTS15, Caspase-6, Claudin-5 and Prodh1 were verified by qRT-PCR, which were consistent with the RNA-seq results. In addition, the relative expression of ADAMTS15 was negatively correlated with the level of cardiac IL-1β (r = -0.748, P = 0.005) and positively correlated with the level of cardiac IL-10 (r = 0.698, P = 0.012). A negative correlation statistical trend was found between the relative expression of ADAMTS15 and the level of cardiac IL-6 (r = -0.545, P = 0.067). Conclusions ADAMTS15 may be a potential inflammation-related gene in regulation of cardioprotection conferred by remote ischemic postconditioning and a possible therapeutic target for myocardial ischemia reperfusion injury in the future.
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Affiliation(s)
- Bo Zuo
- Department of Cardiology, Cardiovascular Centre, Beijing Friendship Hospital, Capital Medical University, Beijing, China
- Department of Cardiology, Peking University Third Hospital, Beijing, China
- Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health, Beijing, China
- Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing, China
| | - Sha Zhu
- Department of Neurology, Peking University International Hospital, Beijing, China
| | - Guisong Wang
- Department of Cardiology, Peking University Third Hospital, Beijing, China
- Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health, Beijing, China
- Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing, China
| | - Zhengpeng Li
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese People’s Liberation Army General Hospital, Beijing, China
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Lima e Silva R, Mirando AC, Tzeng SY, Green JJ, Popel AS, Pandey NB, Campochiaro PA. Anti-angiogenic collagen IV-derived peptide target engagement with α vβ 3 and α 5β 1 in ocular neovascularization models. iScience 2023; 26:106078. [PMID: 36844452 PMCID: PMC9947312 DOI: 10.1016/j.isci.2023.106078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 12/22/2022] [Accepted: 01/23/2023] [Indexed: 01/31/2023] Open
Abstract
AXT107, a collagen-derived peptide that binds integrins αvβ3 and α5β1 with high affinity, suppresses vascular endothelial growth factor (VEGF) signaling, promotes angiopoietin 2-induced Tie2 activation, and suppresses neovascularization (NV) and vascular leakage. Immunohistochemical staining for αvβ3 and α5β1 was markedly increased in NV compared with normal retinal vessels. After intravitreous injection of AXT107, there was no staining with an anti-AXT107 antibody on normal vessels but robust staining of NV that co-localized with αvβ3 and α5β1. Likewise, after intravitreous injection, fluorescein amidite-labeled AXT107 co-localized with αvβ3 and α5β1 on NV but not normal vessels. AXT107 also co-localized with αv and α5 at cell-cell junctions of human umbilical vein endothelial cells (HUVECs). AXT107-integrin binding was demonstrated by ex vivo cross-linking/pull-down experiments. These data support the hypothesis that AXT107 therapeutic activity is mediated through binding αvβ3 and α5β1 which are markedly upregulated on endothelial cells in NV providing selective targeting of diseased vessels which has therapeutic and safety benefits.
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Affiliation(s)
- Raquel Lima e Silva
- Department of Ophthalmology and The Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Adam C. Mirando
- AsclepiX Therapeutics, Inc., Baltimore, MD, USA
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Stephany Y. Tzeng
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Jordan J. Green
- Department of Ophthalmology and The Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Aleksander S. Popel
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Niranjan B. Pandey
- AsclepiX Therapeutics, Inc., Baltimore, MD, USA
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Peter A. Campochiaro
- Department of Ophthalmology and The Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Biose IJ, Ismael S, Ouvrier B, White AL, Bix GJ. The Potential Role of Integrin Signaling in Memory and Cognitive Impairment. Biomolecules 2023; 13:biom13010108. [PMID: 36671492 PMCID: PMC9855855 DOI: 10.3390/biom13010108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/29/2022] [Accepted: 01/02/2023] [Indexed: 01/06/2023] Open
Abstract
Dementia currently has no cure and, due to the increased prevalence and associated economic and personal burden of this condition, current research efforts for the development of potential therapies have intensified. Recently, targeting integrins as a strategy to ameliorate dementia and other forms of cognitive impairment has begun to gain traction. Integrins are major bidirectional signaling receptors in mammalian cells, mediating various physiological processes such as cell-cell interaction and cell adhesion, and are also known to bind to the extracellular matrix. In particular, integrins play a critical role in the synaptic transmission of signals, hence their potential contribution to memory formation and significance in cognitive impairment. In this review, we describe the physiological roles that integrins play in the blood-brain barrier (BBB) and in the formation of memories. We also provide a clear overview of how integrins are implicated in BBB disruption following cerebral pathology. Given that vascular contributions to cognitive impairment and dementia and Alzheimer's' disease are prominent forms of dementia that involve BBB disruption, as well as chronic inflammation, we present current approaches shown to improve dementia-like conditions with integrins as a central focus. We conclude that integrins are vital in memory formation and that their disruption could lead to various forms of cognitive impairment. While further research to understand the relationships between integrins and memory is needed, we propose that the translational relevance of research efforts in this area could be improved through the use of appropriately aged, comorbid, male and female animals.
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Affiliation(s)
- Ifechukwude Joachim Biose
- Clinical Neuroscience Research Center, Department of Neurosurgery, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Saifudeen Ismael
- Clinical Neuroscience Research Center, Department of Neurosurgery, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Blake Ouvrier
- Clinical Neuroscience Research Center, Department of Neurosurgery, Tulane University School of Medicine, New Orleans, LA 70112, USA
- Tulane Brain Institute, Tulane University, New Orleans, LA 70112, USA
| | - Amanda Louise White
- Clinical Neuroscience Research Center, Department of Neurosurgery, Tulane University School of Medicine, New Orleans, LA 70112, USA
- Tulane Brain Institute, Tulane University, New Orleans, LA 70112, USA
| | - Gregory Jaye Bix
- Clinical Neuroscience Research Center, Department of Neurosurgery, Tulane University School of Medicine, New Orleans, LA 70112, USA
- School of Medicine, Tulane University, New Orleans, LA 70112, USA
- Department of Neurology, Tulane University School of Medicine, New Orleans, LA 70112, USA
- Department of Microbiology and Immunology, Tulane University School of Medicine, New Orleans, LA 70112, USA
- School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA 70122, USA
- Correspondence: ; Tel.: +1-504-988-3564
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Yamaguchi S, Yoshida M, Horie N, Satoh K, Fukuda Y, Ishizaka S, Ogawa K, Morofuji Y, Hiu T, Izumo T, Kawakami S, Nishida N, Matsuo T. Stem Cell Therapy for Acute/Subacute Ischemic Stroke with a Focus on Intraarterial Stem Cell Transplantation: From Basic Research to Clinical Trials. BIOENGINEERING (BASEL, SWITZERLAND) 2022; 10:bioengineering10010033. [PMID: 36671605 PMCID: PMC9854681 DOI: 10.3390/bioengineering10010033] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/21/2022] [Accepted: 12/22/2022] [Indexed: 12/29/2022]
Abstract
Stem cell therapy for ischemic stroke holds great promise for the treatment of neurological impairment and has moved from the laboratory into early clinical trials. The mechanism of action of stem cell therapy includes the bystander effect and cell replacement. The bystander effect plays an important role in the acute to subacute phase, and cell replacement plays an important role in the subacute to chronic phase. Intraarterial (IA) transplantation is less invasive than intraparenchymal transplantation and can provide more cells in the affected brain region than intravenous transplantation. However, transplanted cell migration was reported to be insufficient, and few transplanted cells were retained in the brain for an extended period. Therefore, the bystander effect was considered the main mechanism of action of IA stem cell transplantation. In most clinical trials, IA transplantation was performed during the acute and subacute phases. Although clinical trials of IA transplantation demonstrated safety, they did not demonstrate satisfactory efficacy in improving patient outcomes. To increase efficacy, increased migration of transplanted cells and production of long surviving and effective stem cells would be crucial. Given the lack of knowledge on this subject, we review and summarize the mechanisms of action of transplanted stem cells and recent advancements in preclinical and clinical studies to provide information and guidance for further advancement of acute/subacute phase IA stem cell transplantation therapy for ischemic stroke.
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Affiliation(s)
- Susumu Yamaguchi
- Department of Neurosurgery, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8501, Japan
- Department of Neurosurgery, Sasebo General Hospital, Nagasaki 857-8511, Japan
- Correspondence: ; Tel.: +81-095-819-7375
| | - Michiharu Yoshida
- Department of Neurosurgery, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8501, Japan
- Department of Neurosurgery, Sasebo General Hospital, Nagasaki 857-8511, Japan
| | - Nobutaka Horie
- Department of Neurosurgery, Hiroshima University, Hiroshima 734-8551, Japan
| | - Katsuya Satoh
- Department of Occupational Therapy Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8501, Japan
| | - Yuutaka Fukuda
- Department of Neurosurgery, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8501, Japan
| | - Shunsuke Ishizaka
- Department of Neurosurgery, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8501, Japan
| | - Koki Ogawa
- Department of Pharmaceutical Informatics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8588, Japan
| | - Yoichi Morofuji
- Department of Neurosurgery, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8501, Japan
| | - Takeshi Hiu
- Department of Neurosurgery, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8501, Japan
| | - Tsuyoshi Izumo
- Department of Neurosurgery, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8501, Japan
| | - Shigeru Kawakami
- Department of Pharmaceutical Informatics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8588, Japan
| | - Noriyuki Nishida
- Department of Molecular Microbiology and Immunology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8523, Japan
| | - Takayuki Matsuo
- Department of Neurosurgery, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8501, Japan
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Bui TA, Jickling GC, Winship IR. Neutrophil dynamics and inflammaging in acute ischemic stroke: A transcriptomic review. Front Aging Neurosci 2022; 14:1041333. [PMID: 36620775 PMCID: PMC9813499 DOI: 10.3389/fnagi.2022.1041333] [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: 09/10/2022] [Accepted: 11/28/2022] [Indexed: 12/24/2022] Open
Abstract
Stroke is among the leading causes of death and disability worldwide. Restoring blood flow through recanalization is currently the only acute treatment for cerebral ischemia. Unfortunately, many patients that achieve a complete recanalization fail to regain functional independence. Recent studies indicate that activation of peripheral immune cells, particularly neutrophils, may contribute to microcirculatory failure and futile recanalization. Stroke primarily affects the elderly population, and mortality after endovascular therapies is associated with advanced age. Previous analyses of differential gene expression across injury status and age identify ischemic stroke as a complex age-related disease. It also suggests robust interactions between stroke injury, aging, and inflammation on a cellular and molecular level. Understanding such interactions is crucial in developing effective protective treatments. The global stroke burden will continue to increase with a rapidly aging human population. Unfortunately, the mechanisms of age-dependent vulnerability are poorly defined. In this review, we will discuss how neutrophil-specific gene expression patterns may contribute to poor treatment responses in stroke patients. We will also discuss age-related transcriptional changes that may contribute to poor clinical outcomes and greater susceptibility to cerebrovascular diseases.
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Affiliation(s)
- Truong An Bui
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, Canada
| | - Glen C. Jickling
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, Canada
- Department of Medicine, Division of Neurology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Ian R. Winship
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, Canada
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, Canada
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11
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Moxon JV, Kraeuter AK, Phie J, Juliano S, Anderson G, Standley G, Sealey C, White RP, Golledge J. Serum angiopoietin-1 concentration does not distinguish patients with ischaemic stroke from those presenting to hospital with ischaemic stroke mimics. BMC Cardiovasc Disord 2022; 22:462. [PMID: 36333663 PMCID: PMC9636674 DOI: 10.1186/s12872-022-02918-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 10/26/2022] [Indexed: 11/06/2022] Open
Abstract
Background A previous study found that circulating angiopoietin-1 (angpt-1) concentrations were significantly lower in patients who had a recent ischaemic stroke compared to healthy controls. The primary aim of this study was to assess whether serum angpt-1 could be used as a diagnostic test of ischemic stroke in patients presenting to hospital as an emergency. Exploratory analyses investigated the association of proteins functionally related to angpt-1 (angpt-2, Tie-2, matrix metalloproteinase-9 and vascular endothelial growth factors A, C and D) with ischaemic stroke diagnosis. Methods Patients presenting to Townsville University Hospital for emergency assessment of stroke-like symptoms were consecutively recruited and provided a blood sample. After assessment by a consultant neurologist, patients were grouped into those who did, or did not have ischaemic stroke. The potential for serum angpt-1 to diagnose ischaemic stroke was assessed using receiver operator characteristic (ROC) curves. Cross-sectional analyses appraised inter-group differences in the serum concentration of other proteins. Results One-hundred and twenty-six patients presenting to Townsville University Hospital for emergency assessment of stroke-like symptoms were recruited (median time from symptom onset to hospital presentation: 2.6 (inter-quartile range: 1.2–4.6) hours). Serum angpt-1 had poor ability to diagnose ischaemic stroke in analyses using the whole cohort, or in sensitivity analyses (area under the ROC curve 0.51 (95% CI: 0.41–0.62) and 0.52 (95% CI: 0.39–0.64), respectively). No associations of serum angpt-1 concentration with ischaemic stroke severity, symptom duration or aetiology were observed. Serum concentrations of the other assessed proteins did not differ between patient groups. Conclusions Serum angpt-1 concentration is unlikely to be useful for emergency diagnosis of ischaemic stroke. Supplementary Information The online version contains supplementary material available at 10.1186/s12872-022-02918-w.
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12
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Piatek P, Lewkowicz N, Michlewska S, Wieczorek M, Bonikowski R, Parchem K, Lewkowicz P, Namiecinska M. Natural fish oil improves the differentiation and maturation of oligodendrocyte precursor cells to oligodendrocytes in vitro after interaction with the blood–brain barrier. Front Immunol 2022; 13:932383. [PMID: 35935952 PMCID: PMC9353075 DOI: 10.3389/fimmu.2022.932383] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 06/24/2022] [Indexed: 11/15/2022] Open
Abstract
The blood–brain barrier (BBB) tightly controls the microenvironment of the central nervous system (CNS) to allow neurons to function properly. Additionally, emerging studies point to the beneficial effect of natural oils affecting a wide variety of physiological and pathological processes in the human body. In this study, using an in vitro model of the BBB, we tested the influence of natural fish oil mixture (FOM) vs. borage oil (BO), both rich in long-chain polyunsaturated fatty acids (LC-PUFAs) and monounsaturated fatty acids (MUFAs) such as oleic acid (C18:1n9c) or nervonic acid (NA), on human oligodendrocyte precursor cells (hOPCs) during their maturation to oligodendrocytes (OLs) regarding their ability to synthesize myelin peptides and NA. We demonstrated that FOM, opposite to BO, supplemented endothelial cells (ECs) and astrocytes forming the BBB, affecting the function of hOPCs during their maturation. This resulted in improved synthesis of myelin basic protein (MBP), myelin oligodendrocyte glycoprotein (MOG), proteolipid protein (PLP), and NA in mature OLs. This effect is probably the result of BBB cell and hOPC stimulation via free fatty acid receptors (FFARs), which increases insulin growth factor-1 (IGF-1), ciliary neurotrophic factor (CNTF), and brain-derived neurotrophic factor (BDNF) and inhibits fibroblast growth factor 2 (FGF-2) synthesis. The unique formula of fish oil, characterized by much more varied components compared to those of BOs, also improved the enhancement of the tight junction by increasing the expression of claudin-5 and VE-cadherin on ECs. The obtained data justify consideration of naturally derived fish oil intake in human diet as affecting during remyelination.
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Affiliation(s)
- Paweł Piatek
- Department of Immunogenetics, Medical University of Lodz, Lodz, Poland
| | - Natalia Lewkowicz
- Department of Periodontology and Oral Mucosal Diseases, Medical University of Lodz, Lodz, Poland
| | - Sylwia Michlewska
- Laboratory of Microscopic Imaging and Specialized Biological Techniques, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland
| | - Marek Wieczorek
- Department of Neurobiology, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland
| | - Radosław Bonikowski
- Faculty of Biotechnology and Food Sciences, Institute of Natural Products and Cosmetics, Lodz University of Technology, Lodz, Poland
| | - Karol Parchem
- Department of Food Chemistry, Technology and Biotechnology, Faculty of Chemistry, Gdansk University of Technology, Gdansk, Poland
| | - Przemysław Lewkowicz
- Department of Immunogenetics, Medical University of Lodz, Lodz, Poland
- *Correspondence: Przemysław Lewkowicz, ; Magdalena Namiecinska,
| | - Magdalena Namiecinska
- Department of Immunogenetics, Medical University of Lodz, Lodz, Poland
- *Correspondence: Przemysław Lewkowicz, ; Magdalena Namiecinska,
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13
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Simats A, Ramiro L, Valls R, de Ramón H, García-Rodríguez P, Orset C, Artigas L, Sardon T, Rosell A, Montaner J. Ceruletide and Alpha-1 Antitrypsin as a Novel Combination Therapy for Ischemic Stroke. Neurotherapeutics 2022; 19:513-527. [PMID: 35226340 PMCID: PMC9226209 DOI: 10.1007/s13311-022-01203-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/15/2022] [Indexed: 12/29/2022] Open
Abstract
Ischemic stroke is a primary cause of morbidity and mortality worldwide. Beyond the approved thrombolytic therapies, there is no effective treatment to mitigate its progression. Drug repositioning combinational therapies are becoming promising approaches to identify new uses of existing drugs to synergically target multiple disease-response mechanisms underlying complex pathologies. Here, we used a systems biology-based approach based on artificial intelligence and pattern recognition tools to generate in silico mathematical models mimicking the ischemic stroke pathology. Combinational treatments were acquired by screening these models with more than 5 million two-by-two combinations of drugs. A drug combination (CA) formed by ceruletide and alpha-1 antitrypsin showing a predicted value of neuroprotection of 92% was evaluated for their synergic neuroprotective effects in a mouse pre-clinical stroke model. The administration of both drugs in combination was safe and effective in reducing by 39.42% the infarct volume 24 h after cerebral ischemia. This neuroprotection was not observed when drugs were given individually. Importantly, potential incompatibilities of the drug combination with tPA thrombolysis were discarded in vitro and in vivo by using a mouse thromboembolic stroke model with t-PA-induced reperfusion, revealing an improvement in the forepaw strength 72 h after stroke in CA-treated mice. Finally, we identified the predicted mechanisms of action of ceruletide and alpha-1 antitrypsin and we demonstrated that CA modulates EGFR and ANGPT-1 levels in circulation within the acute phase after stroke. In conclusion, we have identified a promising combinational treatment with neuroprotective effects for the treatment of ischemic stroke.
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Affiliation(s)
- Alba Simats
- Neurovascular Research Laboratory, Vall d'Hebron Institute of Research (VHIR), Universitat Autònoma de Barcelona, Hospital Universitari Vall d'Hebron, Pg. Vall d'Hebron 119-129, Barcelona, 08035, Spain
| | - Laura Ramiro
- Neurovascular Research Laboratory, Vall d'Hebron Institute of Research (VHIR), Universitat Autònoma de Barcelona, Hospital Universitari Vall d'Hebron, Pg. Vall d'Hebron 119-129, Barcelona, 08035, Spain
| | | | - Helena de Ramón
- Neurovascular Research Laboratory, Vall d'Hebron Institute of Research (VHIR), Universitat Autònoma de Barcelona, Hospital Universitari Vall d'Hebron, Pg. Vall d'Hebron 119-129, Barcelona, 08035, Spain
| | - Paula García-Rodríguez
- Neurovascular Research Laboratory, Vall d'Hebron Institute of Research (VHIR), Universitat Autònoma de Barcelona, Hospital Universitari Vall d'Hebron, Pg. Vall d'Hebron 119-129, Barcelona, 08035, Spain
| | - Cyrille Orset
- Inserm UMR-S U1237, Physiopathology and Imaging of Neurological Disorders, Université Caen-Normandie, GIP Cyceron, Caen, France
| | | | | | - Anna Rosell
- Neurovascular Research Laboratory, Vall d'Hebron Institute of Research (VHIR), Universitat Autònoma de Barcelona, Hospital Universitari Vall d'Hebron, Pg. Vall d'Hebron 119-129, Barcelona, 08035, Spain
| | - Joan Montaner
- Neurovascular Research Laboratory, Vall d'Hebron Institute of Research (VHIR), Universitat Autònoma de Barcelona, Hospital Universitari Vall d'Hebron, Pg. Vall d'Hebron 119-129, Barcelona, 08035, Spain.
- Stroke Research Program, Institute of Biomedicine of Seville, IBiS/Hospital Universitario Virgen del Rocío/CSIC, University of Seville, Seville, Spain.
- Department of Neurology, Hospital Universitario Virgen Macarena, Seville, Spain.
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14
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Advanced drug delivery system against ischemic stroke. J Control Release 2022; 344:173-201. [DOI: 10.1016/j.jconrel.2022.02.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 02/28/2022] [Accepted: 02/28/2022] [Indexed: 02/06/2023]
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15
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Silencing of lncRNA XIST impairs angiogenesis and exacerbates cerebral vascular injury after ischemic stroke. MOLECULAR THERAPY. NUCLEIC ACIDS 2021; 26:148-160. [PMID: 34513301 PMCID: PMC8413678 DOI: 10.1016/j.omtn.2021.06.025] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 06/30/2021] [Indexed: 11/22/2022]
Abstract
The aim of this study was to investigate the function and regulatory mechanism of long non-coding RNA (lncRNA) X-inactive-specific transcript (XIST) in cerebral ischemic stroke (CIS). The impact of lncRNA XIST on CIS was evaluated in acute CIS patients, middle cerebral artery occlusion (MCAO) mice, and oxygen-glucose deprivation and restoration brain endothelial cells. Our results demonstrated that the expression of lncRNA XIST decreased during the early stages of CIS but then increased in the later stages in CIS patients and ischemic models in vivo and in vitro. In addition, the serum levels of lncRNA XIST negatively correlated with severity of neurological impairment of CIS patients. Further studies exhibited that lncRNA XIST regulated the expression of proangiogenic factor-integrin α5 (Itgα5) and anti-inflammation factor-Kruppel-like transcription factor 4 (KLF4) by targeting microRNA-92a (miR-92a). Silencing of lncRNA XIST impaired angiogenesis and exacerbated cerebral vascular injury following CIS, leading to larger infarcts and worse neurological deficits in transient MCAO mice. Mechanistic analysis revealed that lncRNA XIST modulated angiogenesis and alleviated cerebral vascular injury following CIS through mediating the miR-92a/Itgα5 or KLF4 axis, respectively. These data indicate that lncRNA XIST confers protection against CIS, providing a valuable target for future prevention and treatment of CIS.
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16
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Meng H, Fan L, Zhang CJ, Zhu L, Liu P, Chen J, Bao X, Pu Z, Zhu MS, Xu Y. Synthetic VSMCs induce BBB disruption mediated by MYPT1 in ischemic stroke. iScience 2021; 24:103047. [PMID: 34553133 PMCID: PMC8441154 DOI: 10.1016/j.isci.2021.103047] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 06/14/2021] [Accepted: 08/24/2021] [Indexed: 12/20/2022] Open
Abstract
Vascular smooth muscle cells (VSMCs) have been widely recognized as key players in regulating blood-brain barrier (BBB) function, and their roles are unclear in ischemic stroke. Myosin phosphatase target subunit 1 (MYPT1) is essential for VSMC contraction and maintaining healthy vasculature. We generated VSMC-specific MYPT1 knockout (MYPT1SMKO) mice and cultured VSMCs infected with Lv-shMYPT1 to explore phenotypic switching of VSMCs and the accompanied impacts on BBB integrity. We found that MYPT1 deficiency induced phenotypic switching of synthetic VSMCs, which aggravated BBB disruption. Proteomic analysis identified evolutionarily conserved signaling intermediates in Toll pathways (ECSIT) as a downstream molecule that promotes activation of synthetic VSMCs and contributed to IL-6 expression. Knocking down ECSIT rescued phenotypic switching of VSMCs and BBB disruption. Additionally, inhibition of IL-6 decreased BBB permeability. These findings reveal that MYPT1 deficiency activated phenotypic switching of synthetic VSMCs and induced BBB disruption through ECSIT-IL-6 signaling after ischemic stroke. MYPT1 deficiency induces activation of synthetic VSMCs and aggravates BBB disruption Synthetic VSMCs release more IL-6 to destroy BBB in a contact-independent way MYPT1-ECSIT-IL-6 signaling pathway regulates synthetic VSMC-mediated BBB disruption
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Affiliation(s)
- Hailan Meng
- Department of Neurology of Drum Tower Hospital, Medical School and the State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210008, China.,Institute of Brain Sciences, Nanjing University, Nanjing 210008, China.,Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing 210008, China.,Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing 210008, China.,Nanjing Neuropsychiatry Clinic Medical Center, Nanjing 210008, China
| | - Lizhen Fan
- Department of Neurology of Drum Tower Hospital, Medical School and the State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210008, China.,Institute of Brain Sciences, Nanjing University, Nanjing 210008, China.,Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing 210008, China.,Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing 210008, China.,Nanjing Neuropsychiatry Clinic Medical Center, Nanjing 210008, China
| | - Cun-Jin Zhang
- Department of Neurology of Drum Tower Hospital, Medical School and the State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210008, China.,Institute of Brain Sciences, Nanjing University, Nanjing 210008, China.,Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing 210008, China.,Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing 210008, China.,Nanjing Neuropsychiatry Clinic Medical Center, Nanjing 210008, China
| | - Liwen Zhu
- Department of Neurology of Drum Tower Hospital, Medical School and the State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210008, China.,Institute of Brain Sciences, Nanjing University, Nanjing 210008, China.,Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing 210008, China.,Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing 210008, China.,Nanjing Neuropsychiatry Clinic Medical Center, Nanjing 210008, China
| | - Pinyi Liu
- Department of Neurology of Drum Tower Hospital, Medical School and the State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210008, China.,Institute of Brain Sciences, Nanjing University, Nanjing 210008, China.,Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing 210008, China.,Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing 210008, China.,Nanjing Neuropsychiatry Clinic Medical Center, Nanjing 210008, China
| | - Jian Chen
- Department of Neurology of Drum Tower Hospital, Medical School and the State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210008, China.,Institute of Brain Sciences, Nanjing University, Nanjing 210008, China.,Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing 210008, China.,Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing 210008, China.,Nanjing Neuropsychiatry Clinic Medical Center, Nanjing 210008, China
| | - Xinyu Bao
- Department of Neurology of Drum Tower Hospital, Medical School and the State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210008, China.,Institute of Brain Sciences, Nanjing University, Nanjing 210008, China.,Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing 210008, China.,Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing 210008, China.,Nanjing Neuropsychiatry Clinic Medical Center, Nanjing 210008, China
| | - Zhijun Pu
- Department of Neurology of Drum Tower Hospital, Medical School and the State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210008, China.,Institute of Brain Sciences, Nanjing University, Nanjing 210008, China.,Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing 210008, China.,Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing 210008, China.,Nanjing Neuropsychiatry Clinic Medical Center, Nanjing 210008, China
| | - Min-Sheng Zhu
- Model Animal Research Center, Nanjing University, Nanjing 210061, China.,Ministry of Education (MOE) Key Laboratory of Model Animal for Disease Study, Nanjing University, Nanjing 210061, China
| | - Yun Xu
- Department of Neurology of Drum Tower Hospital, Medical School and the State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210008, China.,Institute of Brain Sciences, Nanjing University, Nanjing 210008, China.,Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing 210008, China.,Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing 210008, China.,Nanjing Neuropsychiatry Clinic Medical Center, Nanjing 210008, China
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17
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Wei X, Jessa S, Kleinman CL, Phoenix TN. Mapping Angiopoietin1 expression in the developing and adult brain. Dev Neurosci 2021; 43:321-334. [PMID: 34348288 DOI: 10.1159/000518351] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 07/06/2021] [Indexed: 11/19/2022] Open
Affiliation(s)
- Xin Wei
- Division of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, Ohio, USA,
| | - Selin Jessa
- Quantitative Life Sciences, McGill University, Montreal, Québec, Canada
- Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Québec, Canada
| | - Claudia L Kleinman
- Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Québec, Canada
- Department of Human Genetics, McGill University, Montreal, Québec, Canada
| | - Timothy N Phoenix
- Division of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, Ohio, USA
- Research in Patient Services, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
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18
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Yang H, Luo Y, Hu H, Yang S, Li Y, Jin H, Chen S, He Q, Hong C, Wu J, Wan Y, Li M, Li Z, Yang X, Su Y, Zhou Y, Hu B. pH-Sensitive, Cerebral Vasculature-Targeting Hydroxyethyl Starch Functionalized Nanoparticles for Improved Angiogenesis and Neurological Function Recovery in Ischemic Stroke. Adv Healthc Mater 2021; 10:e2100028. [PMID: 34028998 DOI: 10.1002/adhm.202100028] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 03/16/2021] [Indexed: 01/17/2023]
Abstract
Angiogenesis, an essential restorative process following ischemia, is a promising therapeutic approach to improve neurological deficits. However, overcoming the blood-brain barrier (BBB) and effective drug enrichment are challenges for conventional drug delivery methods, which has limited the development of treatment strategies. Herein, a dual-targeted therapeutic strategy is reported to enable pH-sensitive drug release and allow cerebral ischemia targeting to improve stroke therapeutic efficacy. Targeted delivery is achieved by surface conjugation of Pro-His-Ser-Arg-Asn (PHSRN) peptides, which binds to integrin α5 β1 enriched in the cerebral vasculature of ischemic tissue. Subsequently, smoothened agonist (SAG), an activator of sonic hedgehog (Shh) signaling, is coupled to PHSRN-HES by pH-dependent electrostatic adsorption. SAG@PHSRN-HES nanoparticles can sensitively release more SAG in the acidic environment of ischemic brain tissue. More importantly, SAG@PHSRN-HES exerts the synergistic mechanisms of PHSRN and SAG to promote angiogenesis and BBB integrity, thus improving neuroplasticity and neurological function recovery. This study proposes a new approach to improve the delivery of medications in the ischemic brain. Dual-targeted therapeutic strategies have excellent potential to treat patients suffering from cerebral infarction.
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Affiliation(s)
- Hang Yang
- Department of Neurology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China
| | - Yan Luo
- Department of Neurology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China
| | - Hang Hu
- School of Pharmacy Changzhou University Changzhou 213164 P. R. China
| | - Sibo Yang
- Department of Neurology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China
| | - Yanan Li
- Department of Neurology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China
| | - Huijuan Jin
- Department of Neurology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China
| | - Shengcai Chen
- Department of Neurology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China
| | - Quanwei He
- Department of Neurology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China
| | - Candong Hong
- Department of Neurology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China
| | - Jiehong Wu
- Department of Neurology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China
| | - Yan Wan
- Department of Neurology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China
| | - Man Li
- Department of Neurology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China
| | - Zifu Li
- National Engineering Research Center for Nanomedicine College of Life Science and Technology Huazhong University of Science and Technology Wuhan 430074 P. R. China
| | - Xiangliang Yang
- National Engineering Research Center for Nanomedicine College of Life Science and Technology Huazhong University of Science and Technology Wuhan 430074 P. R. China
| | - Ying Su
- Department of Neurology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China
| | - Yifan Zhou
- Department of Neurology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China
| | - Bo Hu
- Department of Neurology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China
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19
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Castañeda-Cabral JL, Colunga-Durán A, Ureña-Guerrero ME, Beas-Zárate C, Nuñez-Lumbreras MDLA, Orozco-Suárez S, Alonso-Vanegas M, Guevara-Guzmán R, Deli MA, Valle-Dorado MG, Sánchez-Valle V, Rocha L. Expression of VEGF- and tight junction-related proteins in the neocortical microvasculature of patients with drug-resistant temporal lobe epilepsy. Microvasc Res 2020; 132:104059. [PMID: 32798551 DOI: 10.1016/j.mvr.2020.104059] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 06/30/2020] [Accepted: 08/11/2020] [Indexed: 12/14/2022]
Abstract
The blood-brain barrier (BBB) maintains the optimal microenvironment for brain function. Tight junctions (TJs) allow endothelial cells to adhere to each other, leading to the formation of a barrier that prevents the penetration of most molecules via transcellular routes. Evidence has indicated that seizure-induced vascular endothelial growth factor (VEGF) type 2 receptor (VEGFR-2) pathway activation weakens TJs, inducing vasodilatation and increasing vascular permeability and subsequent brain injury. The present study focused on investigating the expression levels of VEGF-related (VEGF-A and VEGFR-2) and TJ-related proteins (claudin-5, occludin and ZO-1) in the neocortical microvasculature of patients with drug-resistant temporal lobe epilepsy (TLE). The results obtained from hippocampal sclerosis TLE (HS-TLE) patients were compared with those obtained from patients with TLE secondary to lesions (lesion-TLE) and autopsy samples. The Western blotting and immunofluorescence results showed that VEGF-A and VEGFR-2 protein expression levels were increased in HS-TLE and lesion-TLE patients compared to autopsy group. On the other hand, claudin-5 expression was higher in HS-TLE patients and lesion-TLE patients than autopsies. The expression level of occludin and ZO-1 was decreased in HS-TLE patients. Our study described modifications to the integrity of the BBB that may contribute to the pathogenesis of TLE, in which the VEGF system may play an important role. We demonstrated that the same modifications were present in both HS-TLE and lesion-TLE patients, which suggests that seizures modify these systems and that they are not associated with the establishment of epilepsy.
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Affiliation(s)
- José Luis Castañeda-Cabral
- Departamento de Farmacobiología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (Cinvestav) Sede Sur, Ciudad de México, Mexico; Departamento de Biología Celular y Molecular, Centro Universitario de Ciencias Biológicas y Agropecuarias (CUCBA), Universidad de Guadalajara, Zapopan, Mexico.
| | - Adacrid Colunga-Durán
- Departamento de Farmacobiología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (Cinvestav) Sede Sur, Ciudad de México, Mexico
| | - Mónica E Ureña-Guerrero
- Departamento de Biología Celular y Molecular, Centro Universitario de Ciencias Biológicas y Agropecuarias (CUCBA), Universidad de Guadalajara, Zapopan, Mexico
| | - Carlos Beas-Zárate
- Departamento de Biología Celular y Molecular, Centro Universitario de Ciencias Biológicas y Agropecuarias (CUCBA), Universidad de Guadalajara, Zapopan, Mexico
| | - Maria de Los Angeles Nuñez-Lumbreras
- Departamento de Farmacobiología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (Cinvestav) Sede Sur, Ciudad de México, Mexico
| | - Sandra Orozco-Suárez
- Unidad de Investigación Médica en Enfermedades Neurológicas, Hospital de Especialidades, Centro Médico Nacional Siglo XXI, IMSS, Ciudad de México, Mexico
| | - Mario Alonso-Vanegas
- Servicio de Neurocirugía, Instituto Nacional de Neurología y Neurocirugía "Manuel Velasco Suárez" (INNNMVS), Ciudad de México, Mexico
| | - Rosalinda Guevara-Guzmán
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Maria A Deli
- Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - María Guadalupe Valle-Dorado
- Departamento de Farmacobiología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (Cinvestav) Sede Sur, Ciudad de México, Mexico
| | | | - Luisa Rocha
- Departamento de Farmacobiología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (Cinvestav) Sede Sur, Ciudad de México, Mexico
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20
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Edwards DN, Salmeron K, Lukins DE, Trout AL, Fraser JF, Bix GJ. Integrin α5β1 inhibition by ATN-161 reduces neuroinflammation and is neuroprotective in ischemic stroke. J Cereb Blood Flow Metab 2020; 40:1695-1708. [PMID: 31575337 PMCID: PMC7370357 DOI: 10.1177/0271678x19880161] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Stroke remains a leading cause of death and disability with limited therapeutic options. Endothelial cell β1 integrin receptors play a direct role in blood-brain barrier (BBB) dysfunction through regulation of tight junction proteins and infiltrating leukocytes, potentially mediated by β1 integrins. Following tandem transient common carotid artery/middle cerebral artery occlusion on wild-type mice, we administered the integrin a5b1 inhibitor, ATN-161, intraperitoneal (IP) injection at 1 mg/kg acutely after reperfusion, on post-stroke day (PSD)1 and PSD2. Systemic changes (heart rate, pulse distension, and body temperature) were determined. Additionally, infarct volume and edema were determined by 2,3-triphenyltetrazolium chloride and magnetic resonance imaging, while neurological changes were evaluated using an 11-point Neuroscore. Brain immunohistochemistry was performed for claudin-5, α5β1, IgG, and CD45 + cells, and quantitative polymerase chain reaction (qPCR) was performed for matrix metalloproteinase-9 (MMP-9), interleukin (IL)-1β, collagen IV, and CXCL12. ATN-161 significantly reduced integrin α5β1 expression in the surrounding peri-infarct region with no systemic changes. Infarct volume, edema, and functional deficit were significantly reduced in ATN-161-treated mice. Furthermore, ATN-161 treatment reduced IgG extravasation into the parenchyma through conserved claudin-5, collagen IV, CXCL12 while reducing MMP-9 transcription. Additionally, IL-1β and CD45 + cells were reduced in the ipsilateral cortex following ATN-161 administration. Collectively, ATN-161 may be a promising novel stroke therapy by reducing post-stroke inflammation and BBB permeability.
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Affiliation(s)
| | - Kathleen Salmeron
- Department of Neuroscience, University of Kentucky, Lexington, USA.,Department of Physiology, University of Kentucky, Lexington, USA
| | | | - Amanda L Trout
- Department of Neurology, University of Kentucky, Lexington, USA
| | - Justin F Fraser
- Department of Neuroscience, University of Kentucky, Lexington, USA.,Department of Radiology, University of Kentucky, Lexington, USA.,Department of Neurology, University of Kentucky, Lexington, USA.,Department of Neurosurgery, University of Kentucky, Lexington, USA.,Center for Advanced Translational Stroke Science, University of Kentucky, Lexington, USA
| | - Gregory J Bix
- Department of Neuroscience, University of Kentucky, Lexington, USA.,Department of Neurology, University of Kentucky, Lexington, USA.,Department of Neurosurgery, University of Kentucky, Lexington, USA.,Center for Advanced Translational Stroke Science, University of Kentucky, Lexington, USA.,Sanders-Brown Center on Aging, University of Kentucky, Lexington, USA
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21
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Zhang X, Wang L, Han Z, Dong J, Pang D, Fu Y, Li L. KLF4 alleviates cerebral vascular injury by ameliorating vascular endothelial inflammation and regulating tight junction protein expression following ischemic stroke. J Neuroinflammation 2020; 17:107. [PMID: 32264912 PMCID: PMC7140364 DOI: 10.1186/s12974-020-01780-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 03/18/2020] [Indexed: 12/22/2022] Open
Abstract
Background Although inflammatory cell adhesion molecules (CAMs) and anti-inflammation factor Kruppel-like transcription factor (KLF) 4 have all been reported to be induced after cerebral ischemic stroke (CIS), the close temporal and spatial relationship between expressions of CAMs and KLF4 following CIS and whether and how CAMs and KLF-4 contribute to the development of CIS-induced vascular injury are still unclear. Methods Here, we first examined the correlation between serum levels of CAMs/KLF4 and infarct volume in acute CIS patients. Then, we determined the relationship between CAMs and KLF4 in mice after focal cerebral ischemia. Finally, we investigated the mechanism of KLF4 in protecting against oxygen-glucose deprivation-induced brain endothelial cell injury. Results Our results demonstrated that patients with moderate to severe CIS had higher serum levels of three CAMs including E-selectin, inter-cellular adhesion molecule 1 (ICAM-1), and vascular cell adhesion molecule 1 (VCAM-1) but lower levels of KLF4 at 48 h after an acute event as compared to patients with minor CIS. The expression levels of three CAMs as well as KLF4 all correlated well with the infarct volume in all the CIS subjects at that time. Although the expressions of three CAMs and KLF4 were all induced in the ischemic hemisphere following focal cerebral ischemia, the peak timing and distribution patterns of their expression were different: the induction of KLF4 lagged behind that of the CAMs in the ischemic penumbra; furthermore, the dual immunofluorescent studies displayed that high expression of KLF4 was always associated with relatively less cerebral vascular endothelial inflammation response in the ischemic hemisphere and vice versa. Mechanistic analyses revealed that KLF4 alleviated CIS-induced cerebral vascular injury by regulating endothelial expressions of CAMs, nuclear factor-kB, and tight junction proteins. Conclusions These data indicate that KLF4 confers vascular protection against cerebral ischemic injury, suggesting that circulating CAMs and KLF4 might be used as potential biomarkers for predicting the prognosis of acute ischemic stroke and also providing a new proof of concept and potential targets for future prevention and treatment of CIS.
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Affiliation(s)
- Xinyu Zhang
- Department of Neurology, Gongli Hospital, The Second Military Medical University, 219 Miaopu Road, Pudong New Area, Shanghai, 200135, People's Republic of China.,The Graduate School, Ningxia Medical University, Yinchuan, Ningxia, 750004, People's Republic of China
| | - Lu Wang
- Department of Neurology, Gongli Hospital, The Second Military Medical University, 219 Miaopu Road, Pudong New Area, Shanghai, 200135, People's Republic of China
| | - Zhenxiang Han
- Department of Neurology and Rehabilitation, Seventh People's Hospital of Shanghai University of TCM, Shanghai, 200137, People's Republic of China
| | - Jing Dong
- Department of Pharmacy, Gongli Hospital, The Second Military Medical University, Shanghai, 200135, People's Republic of China
| | - Defang Pang
- Department of Special Outpatient Service, Gongli Hospital, The Second Military Medical University, Shanghai, 200135, People's Republic of China
| | - Yuan Fu
- Department of Neurology, The Fourth Affiliated Hospital, Harbin Medical University, Harbin, 150001, People's Republic of China.
| | - Longxuan Li
- Department of Neurology, Gongli Hospital, The Second Military Medical University, 219 Miaopu Road, Pudong New Area, Shanghai, 200135, People's Republic of China.
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22
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Kestner RI, Mayser F, Vutukuri R, Hansen L, Günther S, Brunkhorst R, Devraj K, Pfeilschifter W. Gene Expression Dynamics at the Neurovascular Unit During Early Regeneration After Cerebral Ischemia/Reperfusion Injury in Mice. Front Neurosci 2020; 14:280. [PMID: 32300291 PMCID: PMC7142359 DOI: 10.3389/fnins.2020.00280] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 03/11/2020] [Indexed: 12/21/2022] Open
Abstract
With increasing distribution of endovascular stroke therapies, transient middle cerebral artery occlusion (tMCAO) in mice now more than ever depicts a relevant patient population with recanalized M1 occlusion. In this case, the desired therapeutic effect of blood flow restauration is accompanied by breakdown of the blood-brain barrier (BBB) and secondary reperfusion injury. The aim of this study was to elucidate short and intermediate-term transcriptional patterns and the involved pathways covering the different cellular players at the neurovascular unit after transient large vessel occlusion. To achieve this, male C57Bl/6J mice were treated according to an intensive post-stroke care protocol after 60 min occlusion of the middle cerebral artery or sham surgery to allow a high survival rate. After 24 h or 7 days, RNA from microvessel fragments from the ipsilateral and the contralateral hemispheres was isolated and used for mRNA sequencing. Bioinformatic analyses allowed us to depict gene expression changes at two timepoints of neurovascular post-stroke injury and regeneration. We validated our dataset by quantitative real time PCR of BBB-associated targets with well-characterized post-stroke dynamics. Hence, this study provides a well-controlled transcriptome dataset of a translationally relevant mouse model 24 h and 7 days after stroke which might help to discover future therapeutic targets in cerebral ischemia/reperfusion injury.
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Affiliation(s)
- Roxane-Isabelle Kestner
- Department of Neurology, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,Department of General Pharmacology and Toxicology, Pharmazentrum Frankfurt, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
| | - Franziska Mayser
- Department of Neurology, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,Department of General Pharmacology and Toxicology, Pharmazentrum Frankfurt, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
| | - Rajkumar Vutukuri
- Department of General Pharmacology and Toxicology, Pharmazentrum Frankfurt, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
| | - Lena Hansen
- Department of General Pharmacology and Toxicology, Pharmazentrum Frankfurt, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
| | - Stefan Günther
- Department of Cardiac Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Robert Brunkhorst
- Department of Neurology, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
| | - Kavi Devraj
- Department of General Pharmacology and Toxicology, Pharmazentrum Frankfurt, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,Institute of Neurology (Edinger Institute), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
| | - Waltraud Pfeilschifter
- Department of Neurology, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
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23
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Lv MH, Li S, Jiang YJ, Zhang W. The Sphkl/SlP pathway regulates angiogenesis via NOS/NO synthesis following cerebral ischemia-reperfusion. CNS Neurosci Ther 2019; 26:538-548. [PMID: 31814336 PMCID: PMC7163582 DOI: 10.1111/cns.13275] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 11/14/2019] [Accepted: 11/19/2019] [Indexed: 12/28/2022] Open
Abstract
Aims Sphingosine kinase 1 (Sphk1) and the signaling molecule sphingosine‐1‐phosphate (S1P) are known to be key regulators of a variety of important biological processes, such as neovascularization. Nitric oxide (NO) is also known to play a role in vasoactive properties, whether Sphk1/S1P signaling is able to alter angiogenesis in the context of cerebral ischemia‐reperfusion injury (IRI), and whether such activity is linked with NO production, however, remains uncertain. Methods We used immunofluorescence to detect the expression of Sphk1 and NOS in cerebral epithelial cells (EC) after IR or oxygen‐glucose deprivation (OGDR). Western blotting was used to detect the Sphk1 and NOS protein levels in brain tissues or HBMECs. Adenovirus transfection was used to inhibit Sphk1 and NOS. An NO kit was used to detect NO contents in brain tissues and epithelial cells. Tube formation assays were conducted to measure angiogenesis. Results We determined that EC used in a model of cerebral IRI expressed Sphk1, and that inhibiting this expression led to decreased expression of two isoforms of NO synthase (eNOS and iNOS), as well as to decrease neovascularization density and NO production following injury. In HBMECs, knocking down Sphk1 markedly reduced NO production owing to reduced eNOS activity, and inhibiting eNOS directly similarly decreased NO production in a manner which could be reversed via exogenously treating cells with S1P. We further found that knocking down Sphk1 reduced HBMEC eNOS expression, in addition to decreasing the adhesion, migration, and tube formation abilities of these cells under OGDR conditions. Conclusions Based on these results, we therefore postulate that Sphk1/S1P signaling is able to mediate angiogenesis following cerebral IRI via the regulation of eNOS activity and NO production. As such, targeting these pathways may potentially represent a novel means of improving patient prognosis in those suffering from cerebral IRI.
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Affiliation(s)
- Man-Hua Lv
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Shi Li
- Department of Neurology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yong-Jia Jiang
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Wei Zhang
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
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24
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Zhang B, Zhang Y, Deng F, Fang S. Ligustrazine prevents basilar artery remodeling in two-kidney-two-clip renovascular hypertension rats via suppressing PI3K/Akt signaling. Microvasc Res 2019; 128:103938. [PMID: 31682800 DOI: 10.1016/j.mvr.2019.103938] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 09/19/2019] [Accepted: 10/21/2019] [Indexed: 01/19/2023]
Abstract
OBJECTIVE In the present study, we used a two-kidney-two-clip (2k2c) stroke-prone renovascular hypertension rat model (RHRSP) to investigate the protective effects of ligustrazine (TMP) on cerebral arteries and to examine PI3K/Akt pathway behavior under this protection. METHODS The cerebral artery remodeling was induced by 2k2c-induced renovascular hypertension. Brain basilar artery tissues were isolated and their histological changes were detected through H&E and EVG staining, α-SMA IHC staining, and transmission electron microscopy at four, eight, and twelve weeks after 2k2c surgery, both with and without TMP treatment. Meanwhile, the ET-1, Ang II, and NO levels in basilar arteries and plasma were determined. Furthermore, the PTEN expression and the activation of PI3K/Akt in basilar artery tissues were detected through IHC and Western Blot. In addition, the primary basilar artery smooth muscle cells (BASMCs) were cultured and TMP protection of BASMCs stimulated with ET-1/Ang II in the presence or absence of insulin-like growth factor 1 (IGF-1) was determined. RESULTS TMP attenuated basilar artery remodeling, decreased ET-1 and Ang II levels and increased NO level in basilar arteries and plasma of RHRSP rats. Moreover, TMP reduced BASMCs proliferation upon ET-1/Ang II stimulation. We also found that TMP could effectively suppress the activation of PI3K/Akt in 2k2c-RHRSP rat basilar artery and ET-1/Ang II stimulated BASMCs. Most importantly, IGF-1, as an activator of PI3K/Akt, could damage the protective effect of TMP. CONCLUSIONS TMP exerts its protective effects and prevents basilar artery remodeling in RHRSP rats at least partly through the inhibition of PI3K/Akt pathway.
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MESH Headings
- Angiotensin II/metabolism
- Animals
- Cell Proliferation/drug effects
- Cells, Cultured
- Disease Models, Animal
- Endothelin-1/metabolism
- Hypertension, Renovascular/drug therapy
- Hypertension, Renovascular/enzymology
- Hypertension, Renovascular/pathology
- Hypertension, Renovascular/physiopathology
- Ligation
- Male
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/enzymology
- Muscle, Smooth, Vascular/physiopathology
- Muscle, Smooth, Vascular/ultrastructure
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/enzymology
- Myocytes, Smooth Muscle/pathology
- Nitric Oxide/metabolism
- Phosphatidylinositol 3-Kinase/metabolism
- Proto-Oncogene Proteins c-akt/metabolism
- Pyrazines/pharmacology
- Rats, Sprague-Dawley
- Renal Artery/surgery
- Signal Transduction
- Temporal Arteries/drug effects
- Temporal Arteries/enzymology
- Temporal Arteries/physiopathology
- Temporal Arteries/ultrastructure
- Vascular Remodeling/drug effects
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Affiliation(s)
- Beilin Zhang
- Department of Neurology, The First Teaching Hospital of Jilin University, Changchun, Jilin, China
| | - Ying Zhang
- Department of Neurology, The First Teaching Hospital of Jilin University, Changchun, Jilin, China
| | - Fang Deng
- Department of Neurology, The First Teaching Hospital of Jilin University, Changchun, Jilin, China
| | - Shaokuan Fang
- Department of Neurology, The First Teaching Hospital of Jilin University, Changchun, Jilin, China.
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25
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Overexpression of α5β1 integrin and angiopoietin-1 co-operatively promote blood-brain barrier integrity and angiogenesis following ischemic stroke. Exp Neurol 2019; 321:113042. [DOI: 10.1016/j.expneurol.2019.113042] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 08/18/2019] [Accepted: 08/20/2019] [Indexed: 12/24/2022]
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26
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Dl-3-n-Butylphthalide regulates the Ang-1/Ang-2/Tie-2 signaling axis to promote neovascularization in chronic cerebral hypoperfusion. Biomed Pharmacother 2019; 113:108757. [DOI: 10.1016/j.biopha.2019.108757] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 02/27/2019] [Accepted: 03/04/2019] [Indexed: 12/29/2022] Open
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27
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Kanazawa M, Takahashi T, Ishikawa M, Onodera O, Shimohata T, Del Zoppo GJ. Angiogenesis in the ischemic core: A potential treatment target? J Cereb Blood Flow Metab 2019; 39:753-769. [PMID: 30841779 PMCID: PMC6501515 DOI: 10.1177/0271678x19834158] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The ischemic penumbra is both a concept in understanding the evolution of cerebral tissue injury outcome of focal ischemia and a potential therapeutic target for ischemic stroke. In this review, we examine the evidence that angiogenesis can contribute to beneficial outcomes following focal ischemia in model systems. Several studies have shown that, following cerebral ischemia, endothelial proliferation and subsequent angiogenesis can be detected beginning four days after cerebral ischemia in the border of the ischemic core, or in the ischemic periphery, in rodent and non-human primate models, although initial signals appear within hours of ischemia onset. Components of the neurovascular unit, its participation in new vessel formation, and the nature of the core and penumbra responses to experimental focal cerebral ischemia, are considered here. The potential co-localization of vascular remodeling and axonal outgrowth following focal cerebral ischemia based on the definition of tissue remodeling and the processes that follow ischemic stroke are also considered. The region of angiogenesis in the ischemic core and its surrounding tissue (ischemic periphery) may be a novel target for treatment. We summarize issues that are relevant to model studies of focal cerebral ischemia looking ahead to potential treatments.
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Affiliation(s)
- Masato Kanazawa
- 1 Department of Neurology, Brain Research Institute, Niigata University, Niigata, Japan
| | - Tetsuya Takahashi
- 1 Department of Neurology, Brain Research Institute, Niigata University, Niigata, Japan
| | - Masanori Ishikawa
- 1 Department of Neurology, Brain Research Institute, Niigata University, Niigata, Japan
| | - Osamu Onodera
- 1 Department of Neurology, Brain Research Institute, Niigata University, Niigata, Japan
| | - Takayoshi Shimohata
- 2 Department of Neurology and Geriatrics, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Gregory J Del Zoppo
- 3 Department of Medicine (Division of Hematology), University of Washington, Seattle, WA, USA.,4 Department of Neurology, University of Washington, Seattle, WA, USA
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28
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Lv X, Li Z, Guan J, Zhang J, Xu B, He W, Lan Y, Zhao K, Lu H, Song D, Gao F. ATN-161 reduces virus proliferation in PHEV-infected mice by inhibiting the integrin α5β1-FAK signaling pathway. Vet Microbiol 2019; 233:147-153. [PMID: 31176401 DOI: 10.1016/j.vetmic.2019.04.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 04/24/2019] [Accepted: 04/24/2019] [Indexed: 02/08/2023]
Abstract
Porcine hemagglutinating encephalomyelitis virus (PHEV) is a typical neurotropic virus that can cause obvious nerve damage. Integrin α5β1 is a transmembrane macromolecular that closely related to neurological function. We recently demonstrated that integrin α5β1 plays a critical role in PHEV invasion in vitro. To determine the function and mechanism of integrin α5β1 in virus proliferation in vivo, we established a mouse model of PHEV infection. Integrin α5β1-FAK signaling pathway was activated in PHEV-infected mice by qPCR, Western blotting, and GST pull-down assays. Viral proliferation and integrin α5β1-FAK signaling pathway were significantly inhibited after intravenous injection of ATN-161, an integrin α5β1 inhibitor. Through a histological analysis, we found that ATN-161-treated mice only showed pathological changes in neuronal cytoplasmic swelling at 5 day post-infection. In summary, our results provide the first evidence that ATN-161 inhibits the proliferation of PHEV in mice and explores its underlying mechanisms of action.
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Affiliation(s)
- Xiaoling Lv
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Zi Li
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Jiyu Guan
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Jing Zhang
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Baofeng Xu
- Department of Neurosurgery, The First Hospital of Jilin University, Changchun, 130021, China
| | - Wenqi He
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Yungang Lan
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Kui Zhao
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Huijun Lu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, Jilin University, Changchun 130062, China
| | - Deguang Song
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Feng Gao
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130062, China.
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29
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Dual Roles of Astrocyte-Derived Factors in Regulation of Blood-Brain Barrier Function after Brain Damage. Int J Mol Sci 2019; 20:ijms20030571. [PMID: 30699952 PMCID: PMC6387062 DOI: 10.3390/ijms20030571] [Citation(s) in RCA: 156] [Impact Index Per Article: 31.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 01/23/2019] [Accepted: 01/27/2019] [Indexed: 12/13/2022] Open
Abstract
The blood-brain barrier (BBB) is a major functional barrier in the central nervous system (CNS), and inhibits the extravasation of intravascular contents and transports various essential nutrients between the blood and the brain. After brain damage by traumatic brain injury, cerebral ischemia and several other CNS disorders, the functions of the BBB are disrupted, resulting in severe secondary damage including brain edema and inflammatory injury. Therefore, BBB protection and recovery are considered novel therapeutic strategies for reducing brain damage. Emerging evidence suggests key roles of astrocyte-derived factors in BBB disruption and recovery after brain damage. The astrocyte-derived vascular permeability factors include vascular endothelial growth factors, matrix metalloproteinases, nitric oxide, glutamate and endothelin-1, which enhance BBB permeability leading to BBB disruption. By contrast, the astrocyte-derived protective factors include angiopoietin-1, sonic hedgehog, glial-derived neurotrophic factor, retinoic acid and insulin-like growth factor-1 and apolipoprotein E which attenuate BBB permeability resulting in recovery of BBB function. In this review, the roles of these astrocyte-derived factors in BBB function are summarized, and their significance as therapeutic targets for BBB protection and recovery after brain damage are discussed.
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30
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Zhao QQ, Li X, Luo LP, Qian Y, Liu YL, Wu HT. Repurposing of Approved Cardiovascular Drugs against Ischemic Cerebrovascular Disease by Disease-Disease Associated Network-Assisted Prediction. Chem Pharm Bull (Tokyo) 2018; 67:32-40. [PMID: 30404981 DOI: 10.1248/cpb.c18-00634] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Stroke is one of the leading causes of death and disability globally, while intravenous thrombolysis with recombinant tissue plasminogen activator remains the only Food and Drug Administration (FDA)-approved therapy for ischemic stroke. The attempts to develop new treatments for acute ischemic stroke meet costly and spectacularly disappointing results, which requires both long time and high costs, whereas repurposing of safe existing drugs to new indications provides a cost-effective and not time-consuming alternative. Vascular protection is a promising strategy for improving stroke outcome, as vascular function is critical to both cardiovascular diseases (CVD) and ischemic cerebrovascular disease (ICD). Vascular function related biological processes and pathways maybe the critical associations between CVD and ICD. In this study, a multi-database, in silico target identification, gene function enrichment, and network pharmacology analysis integration approach was proposed and applied to investigate the FDA-approved CVD drugs repurposing for ICD. A list of 119 candidate drugs can be obtained for further investigation of their potential in ICD treatment. As a pleiotropic drug with multi-target, carvedilol was set an example to investigate its promising potential for ICD therapy. Our results indicated that the mode of action of carvedilol for ICD treatment may tightly associated with vascular function regulation and the mechanism is multi-target and multi-signaling pathway related. The disease-disease association network-assisted prediction needs further investigations. In summary, the proposed methods herein may provide a promising alternative to inferring novel disease indications for known drugs.
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Affiliation(s)
- Qin-Qin Zhao
- Department of Pharmacy, the Fourth Affiliated Hospital, College of Medicine, Zhejiang University.,Department of Pharmacy, Tongde Hospital of Zhejiang Province
| | - Xiang Li
- School of Basic Medical Sciences & Forensic Medicine, Hangzhou Medical College
| | - Li-Ping Luo
- Department of Pharmacy, the Fourth Affiliated Hospital, College of Medicine, Zhejiang University
| | - Yi Qian
- School of Basic Medical Sciences & Forensic Medicine, Hangzhou Medical College
| | - Yi-Lin Liu
- School of Basic Medical Sciences & Forensic Medicine, Hangzhou Medical College
| | - Hang-Ting Wu
- School of Basic Medical Sciences & Forensic Medicine, Hangzhou Medical College
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31
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Integrin α5β1-Ang1/Tie2 receptor cross-talk regulates brain endothelial cell responses following cerebral ischemia. Exp Mol Med 2018; 50:1-12. [PMID: 30185785 PMCID: PMC6123805 DOI: 10.1038/s12276-018-0145-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 04/06/2018] [Accepted: 05/14/2018] [Indexed: 11/08/2022] Open
Abstract
We have previously demonstrated that in response to cerebral ischemia (CI), the growth factor angiopoietin-1 (Ang1) and α5β1 integrin are both induced in cerebral vessels, which likely provide positive signals driving the endogenous angiogenic response and vascular protection after CI. However, the precise relationship between endothelial Ang1 and α5β1 integrin after CI remains poorly understood. Here, we investigated the effects of the interaction between the Ang1/Tie2 system and α5β1 integrin on brain endothelial cells (BECs) under cerebral ischemic conditions in vivo and in vitro. Immunofluorescence analysis demonstrated that integrin α5β1 co-localized with Tie2/phosphorylated Tie2 on cerebral vessels in the penumbra. The in vitro study showed that oxygen-glucose deprivation/restoration (OGD/R) induced the expression of the Ang1 receptor Tie2 on BECs in a manner similar to that for integrin α5 and Ang1 in response to OGD/R, accompanied by increased activation of Tie2 and its downstream effectors focal adhesion kinase (FAK) and Akt. Knockdown of α5 integrin markedly suppressed OGD/R-induced Tie2 receptor activation in BECs, while in contrast, priming BECs with Ang1 promoted the expression of α5 integrin as well as the Tie2 downstream transcription factor Ets-1 in OGD-treated BECs. In line with this, Ets-1 knockdown significantly attenuated Ang1-mediated upregulation of α5 integrin. Functionally, Ang1 induced cell migration and tube formation of BECs after OGD, but this effect was inhibited by diminishment of the levels of α5 integrin in BECs. Taken together, our data indicate that the Ang1/Tie2 system cross-talks with integrin α5β1 in BECs after CI, which may contribute to the endogenous angiogenic vascular protective response following CI.
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