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Ou Z, Wang Y, Yao J, Chen L, Miao H, Han Y, Hu X, Chen J. Astragaloside IV promotes angiogenesis by targeting SIRT7/VEGFA signaling pathway to improve brain injury after cerebral infarction in rats. Biomed Pharmacother 2023; 168:115598. [PMID: 37820565 DOI: 10.1016/j.biopha.2023.115598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/16/2023] [Accepted: 09/25/2023] [Indexed: 10/13/2023] Open
Abstract
Cerebral infarction (CI) has become one of the leading causes of death and acquired disability worldwide. Astragaloside IV (AST IV), one of the basic components of Astragalus membranaceus, has a protective effect on CI. However, the underlying mechanism has not been conclusively elucidated. Therefore, this study aims to explore the underlying mechanism of AST IV improving brain injury after CI. Middle cerebral artery occlusion (MCAO) and oxygen-glucose deprivation/reoxygenation (OGD/R) were used to simulate cerebral infarction injury in SD rats and HUVECs cells. Neurologic score, Evans blue, TTC and HE staining were used to observe brain injury in rats. Cell viability and migration were measured in vitro. Angiogenesis was detected by immunofluorescence and tube formation assay, and cell cycle was detected by flow cytometry. Western blot was used to find the expression of related proteins. Molecular docking, virtual mutation, site-directed mutagenesis, MST, and lentivirus silencing were used for target validation. The results showed that AST IV alleviated neurological impairment and promoted angiogenesis after CI. Moreover, AST IV greatly increased the transcription levels of SIRT6 and SIRT7, but had no effect on SIRT1-SIRT5, and promoted cell viability, migration, angiogenesis and S phase ratio in OGD/R-induced HUVECs. Furthermore, AST IV up-regulated the protein expressions of CDK4, cyclin D1, VEGFA and VEGF2R. Interestingly, AST IV not only bound to SIRT7, but also increased the expression of SIRT7. Silencing SIRT7 by lentivirus neutralizes the positive effects of AST IV. Taken together, the present study revealed that AST IV may improve brain tissue damage after CI by targeting SIRT7/VEGFA signaling pathway to promote angiogenesis.
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Affiliation(s)
- Zhijie Ou
- Department of neurology, Changshu Hospital affiliated to Nanjing University of Chinese Medicine, 6 Huanghe Road, Changshu, Jiangsu 215500, China; Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Yan Wang
- Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Jianxin Yao
- Department of neurology, Changshu Hospital affiliated to Nanjing University of Chinese Medicine, 6 Huanghe Road, Changshu, Jiangsu 215500, China; Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Li Chen
- Department of neurology, Changshu Hospital affiliated to Nanjing University of Chinese Medicine, 6 Huanghe Road, Changshu, Jiangsu 215500, China
| | - Hong Miao
- Department of neurology, Changshu Hospital affiliated to Nanjing University of Chinese Medicine, 6 Huanghe Road, Changshu, Jiangsu 215500, China
| | - Yang Han
- Department of neurology, Changshu Hospital affiliated to Nanjing University of Chinese Medicine, 6 Huanghe Road, Changshu, Jiangsu 215500, China
| | - Xin Hu
- Department of neurology, Changshu Hospital affiliated to Nanjing University of Chinese Medicine, 6 Huanghe Road, Changshu, Jiangsu 215500, China
| | - Juping Chen
- Department of neurology, Changshu Hospital affiliated to Nanjing University of Chinese Medicine, 6 Huanghe Road, Changshu, Jiangsu 215500, China; Nanjing University of Chinese Medicine, Nanjing 210023, China.
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Zhang Y, Liu Q, Zhang T, Wang H, Fu Y, Wang W, Li D. The therapeutic role of Jingchuan tablet on ischaemic cerebral stroke via the HIF-1α/EPO/VEGFA signalling pathway. PHARMACEUTICAL BIOLOGY 2022; 60:2110-2123. [PMID: 36269045 PMCID: PMC9590438 DOI: 10.1080/13880209.2022.2134430] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 06/20/2022] [Accepted: 09/30/2022] [Indexed: 06/03/2023]
Abstract
CONTEXT Jingchuan tablet (JCT) is a Chinese medicine prescription for treating ischaemic cerebral stroke (ICS). However, its relevant mechanisms remain unclear. OBJECTIVE To unravel the intrinsic mechanisms of JCT anti-ICS. MATERIALS AND METHODS 'Hongjingtian', 'chuanxiong', 'yanhusuo', 'bingpian', 'cerebral infarction', 'cerebral ischemia' or 'stroke' were used as keywords, and then components, targets and underlying mechanisms of JCT anti-ICS were analysed in TCMSP, TTD, DrugBank, STRING and Metascape databases up to June 2020. Male Sprague-Dawley rats under permanent middle cerebral artery occlusion (pMCAO) model, randomly assigned as: model, sham, nimodipine (0.012 g/kg/d) and JCT (0.78, 1.56 and 3.12 g/kg/d) groups, received oral gavage administration for a week. Therapeutic effects were evaluated by detecting the proportion of cerebral infarction, neuronal apoptosis and neurological deficits. Bioactive components were detected by HPLC-MS. Molecular biology and computational docking were used to verify the underlying mechanisms. RESULTS Eighty-one components, 166 targets and HIF-1α/EPO/VEGFA pathway contributed to the anti-ICS effect of JCT. JCT treatment effectively reduced the proportion of cerebral infarction (33.13%), apoptosis rate (14.80%) and neurobehavioural score (2.00). JCT increased the protein levels of HIF-1α (0.84), EPO (0.64) and VEGFA (0.69), respectively (p < 0.05). Gallic acid, salidroside, chlorogenic acid, ethyl gallate, ferulic acid and tetrahydropalmatine detected by HPLC-MS showed good interaction and binding with HIF-1α/EPO/VEGFA. CONCLUSIONS Our study demonstrated the mechanisms of JCT anti-ICS associated with the activation of the HIF-1α/EPO/VEGFA pathway, which provided a pharmacological basis for expanding the clinical application and some scientific ideas for further research into the material basis JCT anti-ICS.
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Affiliation(s)
- Yan Zhang
- Tianjin Institute of Medical and Pharmaceutical Sciences, Tianjin, China
| | - Qinghuan Liu
- Tianjin Institute of Medical and Pharmaceutical Sciences, Tianjin, China
| | - Ting Zhang
- Tianjin Institute of Medical and Pharmaceutical Sciences, Tianjin, China
| | - Hong Wang
- Tianjin Institute of Medical and Pharmaceutical Sciences, Tianjin, China
| | - Yu Fu
- Tianjin Institute of Medical and Pharmaceutical Sciences, Tianjin, China
| | - Wentong Wang
- Tianjin Institute of Medical and Pharmaceutical Sciences, Tianjin, China
| | - Dongdong Li
- Tianjin Institute of Medical and Pharmaceutical Sciences, Tianjin, China
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3
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Simińska D, Korbecki J, Kojder K, Jeżewski D, Tarnowski M, Tomasiak P, Piotrowska K, Masztalewicz M, Kolasa A, Chlubek D, Baranowska-Bosiacka I. Androgen Receptor Expression in the Various Regions of Resected Glioblastoma Multiforme Tumors and in an In Vitro Model. Int J Mol Sci 2022; 23:13004. [PMID: 36361793 PMCID: PMC9655141 DOI: 10.3390/ijms232113004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/19/2022] [Accepted: 10/24/2022] [Indexed: 09/26/2023] Open
Abstract
Glioblastoma multiforme (GBM) is a malignant glioma, difficult to detect and with the lowest survival rates among gliomas. Its greater incidence among men and its higher survival rate among premenopausal women suggest that it may be associated with the levels of androgens. As androgens stimulate the androgen receptor (AR), which acts as a transcription factor, the aim of this study was the investigate the role of AR in the progression of GBM. The study was conducted on tissues collected from three regions of GBM tumors (tumor core, enhancing tumor region, and peritumoral area). In addition, an in vitro experiment was conducted on U-87 cells under various culture conditions (necrotic, hypoxic, and nutrient-deficient), mimicking the conditions in a tumor. In both of the models, androgen receptor expression was determined at the gene and protein levels, and the results were confirmed by confocal microscopy and immunohistochemistry. AR mRNA expression was higher under nutrient-deficient conditions and lower under hypoxic conditions in vitro. However, there were no differences in AR protein expression. No differences in AR mRNA expression were observed between the tested tumor structures taken from patients. No differences in AR mRNA expression were observed between the men and women. However, AR protein expression in tumors resected from patients was higher in the enhancing tumor region and in the peritumoral area than in the tumor core. In women, higher AR expression was observed in the peritumoral area than in the tumor core. AR expression in GBM tumors did not differ significantly between men and women, which suggests that the higher incidence of GBM in men is not associated with AR expression. In the group consisting of men and women, AR expression varied between the regions of the tumor: AR expression was higher in the enhancing tumor region and in the peritumoral area than in the tumor core, showing a dependence on tumor conditions (hypoxia and insufficient nutrient supply).
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Affiliation(s)
- Donata Simińska
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University in Szczecin, Powstańców Wlkp. 72, 70-111 Szczecin, Poland
| | - Jan Korbecki
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University in Szczecin, Powstańców Wlkp. 72, 70-111 Szczecin, Poland
| | - Klaudyna Kojder
- Department of Anaesthesiology and Intensive Care, Pomeranian Medical University in Szczecin, Unii Lubelskiej 1, 71-252 Szczecin, Poland
| | - Dariusz Jeżewski
- Department of Neurosurgery and Pediatric Neurosurgery Pomeranian Medical University in Szczecin, Unii Lubelskiej 1, 71-252 Szczecin, Poland
- Department of Applied Neurocognitivistics, Pomeranian Medical University in Szczecin, Unii Lubelskiej 1, 71-252 Szczecin, Poland
| | - Maciej Tarnowski
- Department of Physiology in Health Sciences, Pomeranian Medical University in Szczecin, Żołnierska 54, 70-210 Szczecin, Poland
| | - Patrycja Tomasiak
- Institute of Physical Culture Sciences, University of Szczecin, 70-453 Szczecin, Poland
| | - Katarzyna Piotrowska
- Department of Physiology, Pomeranian Medical University in Szczecin, Powstańców Wlkp. 72, 70-111 Szczecin, Poland
| | - Marta Masztalewicz
- Department of Neurology, Pomeranian Medical University in Szczecin, Unii Lubelskiej 1, 71-252 Szczecin, Poland
| | - Agnieszka Kolasa
- Department of Histology and Embryology, Pomeranian Medical University in Szczecin, Powstańców Wlkp. 72, 70-111 Szczecin, Poland
| | - Dariusz Chlubek
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University in Szczecin, Powstańców Wlkp. 72, 70-111 Szczecin, Poland
| | - Irena Baranowska-Bosiacka
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University in Szczecin, Powstańców Wlkp. 72, 70-111 Szczecin, Poland
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Cun Y, Jin Y, Wu D, Zhou L, Zhang C, Zhang S, Yang X, Zuhong Wang, Zhang P. Exosome in Crosstalk between Inflammation and Angiogenesis: A Potential Therapeutic Strategy for Stroke. Mediators Inflamm 2022; 2022:7006281. [PMID: 36052309 PMCID: PMC9427301 DOI: 10.1155/2022/7006281] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Accepted: 07/21/2022] [Indexed: 11/23/2022] Open
Abstract
The endothelial dysfunction, associated with inflammation and vascular permeability, remains the key event in the pathogenesis of cerebral ischemic stroke. Angiogenesis is essential for neuroprotection and neural repair following stroke. The neuroinflammatory reaction plays a vital role in stroke, and inhibition of inflammation contributes to establishing an appropriate external environment for angiogenesis. Exosomes are the heterogeneous population of extracellular vesicles which play critical roles in intercellular communication through transmitting various proteins and nucleic acids to nearby and distant recipient cells by body fluids and circulation. Recent reports have shown that exosomal therapy is a valuable and potential treatment strategy for stroke. In this review, we discussed the exosomes in complex interaction mechanisms of angiogenesis and inflammation following stroke as well as the challenges of exosomal studies such as secretion, uptake, modification, and application.
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Affiliation(s)
- Yongdan Cun
- Key Laboratory of Acupuncture and Massage for Treatment of Encephalopathy, College of Acupuncture, Tuina and Rehabilitation, Yunnan University of Traditional Chinese Medicine, Kunming 650500, China
| | - Yaju Jin
- Key Laboratory of Acupuncture and Massage for Treatment of Encephalopathy, College of Acupuncture, Tuina and Rehabilitation, Yunnan University of Traditional Chinese Medicine, Kunming 650500, China
| | - Danli Wu
- Key Laboratory of Acupuncture and Massage for Treatment of Encephalopathy, College of Acupuncture, Tuina and Rehabilitation, Yunnan University of Traditional Chinese Medicine, Kunming 650500, China
| | - Li Zhou
- Key Laboratory of Acupuncture and Massage for Treatment of Encephalopathy, College of Acupuncture, Tuina and Rehabilitation, Yunnan University of Traditional Chinese Medicine, Kunming 650500, China
| | - Chengcai Zhang
- Key Laboratory of Acupuncture and Massage for Treatment of Encephalopathy, College of Acupuncture, Tuina and Rehabilitation, Yunnan University of Traditional Chinese Medicine, Kunming 650500, China
| | - Simei Zhang
- Key Laboratory of Acupuncture and Massage for Treatment of Encephalopathy, College of Acupuncture, Tuina and Rehabilitation, Yunnan University of Traditional Chinese Medicine, Kunming 650500, China
| | - Xicheng Yang
- Key Laboratory of Acupuncture and Massage for Treatment of Encephalopathy, College of Acupuncture, Tuina and Rehabilitation, Yunnan University of Traditional Chinese Medicine, Kunming 650500, China
| | - Zuhong Wang
- Acupuncture Department, Kunming Traditional Chinese Medicine Hospital, Kunming 650500, China
| | - Pengyue Zhang
- Key Laboratory of Acupuncture and Massage for Treatment of Encephalopathy, College of Acupuncture, Tuina and Rehabilitation, Yunnan University of Traditional Chinese Medicine, Kunming 650500, China
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5
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Klepper S, Jung S, Dittmann L, Geppert CI, Hartmann A, Beier N, Trollmann R. Further Evidence of Neuroprotective Effects of Recombinant Human Erythropoietin and Growth Hormone in Hypoxic Brain Injury in Neonatal Mice. Int J Mol Sci 2022; 23:ijms23158693. [PMID: 35955834 PMCID: PMC9368903 DOI: 10.3390/ijms23158693] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 07/29/2022] [Accepted: 07/30/2022] [Indexed: 02/04/2023] Open
Abstract
Experimental in vivo data have recently shown complementary neuroprotective actions of rhEPO and growth hormone (rhGH) in a neonatal murine model of hypoxic brain injury. Here, we hypothesized that rhGH and rhEPO mediate stabilization of the blood−brain barrier (BBB) and regenerative vascular effects in hypoxic injury to the developing brain. Using an established model of neonatal hypoxia, neonatal mice (P7) were treated i.p. with rhGH (4000 µg/kg) or rhEPO (5000 IU/kg) 0/12/24 h after hypoxic exposure. After a regeneration period of 48 h or 7 d, cerebral mRNA expression of Vegf-A, its receptors and co-receptors, and selected tight junction proteins were determined using qRT-PCR and ELISA. Vessel structures were assessed by Pecam-1 and occludin (Ocln) IHC. While Vegf-A expression increased significantly with rhGH treatment (p < 0.01), expression of the Vegfr and TEK receptor tyrosine kinase (Tie-2) system remained unchanged. RhEPO increased Vegf-A (p < 0.05) and Angpt-2 (p < 0.05) expression. While hypoxia reduced the mean vessel area in the parietal cortex compared to controls (p < 0.05), rhGH and rhEPO prevented this reduction after 48 h of regeneration. Hypoxia significantly reduced the Ocln+ fraction of cortical vascular endothelial cells. Ocln signal intensity increased in the cortex in response to rhGH (p < 0.05) and in the cortex and hippocampus in response to rhEPO (p < 0.05). Our data indicate that rhGH and rhEPO have protective effects on hypoxia-induced BBB disruption and regenerative vascular effects during the post-hypoxic period in the developing brain.
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Affiliation(s)
- Simon Klepper
- Division of Pediatric Neurology, Department of Pediatrics, Friedrich-Alexander Universität Erlangen-Nürnberg, Loschgestr. 15, 91054 Erlangen, Germany
| | - Susan Jung
- Division of Pediatric Neurology, Department of Pediatrics, Friedrich-Alexander Universität Erlangen-Nürnberg, Loschgestr. 15, 91054 Erlangen, Germany
| | - Lara Dittmann
- Division of Pediatric Neurology, Department of Pediatrics, Friedrich-Alexander Universität Erlangen-Nürnberg, Loschgestr. 15, 91054 Erlangen, Germany
| | - Carol I. Geppert
- Institute of Pathology, Friedrich-Alexander Universität Erlangen-Nürnberg, Krankenhausstr. 8, 91054 Erlangen, Germany
| | - Arnd Hartmann
- Institute of Pathology, Friedrich-Alexander Universität Erlangen-Nürnberg, Krankenhausstr. 8, 91054 Erlangen, Germany
| | - Nicole Beier
- Division of Pediatric Neurology, Department of Pediatrics, Friedrich-Alexander Universität Erlangen-Nürnberg, Loschgestr. 15, 91054 Erlangen, Germany
| | - Regina Trollmann
- Division of Pediatric Neurology, Department of Pediatrics, Friedrich-Alexander Universität Erlangen-Nürnberg, Loschgestr. 15, 91054 Erlangen, Germany
- Correspondence: ; Tel.: +49-9131-8533753; Fax: +49-9131-8533389
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6
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Chen H, Ma D, Yue F, Qi Y, Dou M, Cui L, Xing Y. The Potential Role of Hypoxia-Inducible Factor-1 in the Progression and Therapy of Central Nervous System Diseases. Curr Neuropharmacol 2022; 20:1651-1666. [PMID: 34325641 PMCID: PMC9881070 DOI: 10.2174/1570159x19666210729123137] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 06/19/2021] [Accepted: 07/16/2021] [Indexed: 11/22/2022] Open
Abstract
Hypoxia-inducible factor-1 (HIF-1) is a heterodimer protein composed of an oxygenregulated functional subunit, HIF-1α, and a structural subunit, HIF-1β, belonging to the basic helixloop- helix family. Strict regulation of HIF-1 protein stability and subsequent transcriptional activity involves various molecular interactions and is primarily controlled by post-transcriptional modifications. Hypoxia, owing to impaired cerebral blood flow, has been implicated in a range of central nervous system (CNS) diseases by exerting a deleterious effect on brain function. As a master oxygen- sensitive transcription regulator, HIF-1 is responsible for upregulating a wide spectrum of target genes involved in glucose metabolism, angiogenesis, and erythropoiesis to generate the adaptive response to avoid, or at least minimize, hypoxic brain injury. However, prolonged, severe oxygen deprivation may directly contribute to the role-conversion of HIF-1, namely, from neuroprotection to the promotion of cell death. Currently, an increasing number of studies support the fact HIF-1 is involved in a variety of CNS-related diseases, such as intracranial atherosclerosis, stroke, and neurodegenerative diseases. This review article chiefly focuses on the effect of HIF-1 on the pathogenesis and mechanism of progression of numerous CNS-related disorders by mediating the expression of various downstream genes and extensive biological functional events and presents robust evidence that HIF-1 may represent a potential therapeutic target for CNS-related diseases.
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Affiliation(s)
- Hongxiu Chen
- Department of Vascular Ultrasonography, Xuanwu Hospital, Capital Medical University, Beijing, China; ,Beijing Diagnostic Center of Vascular Ultrasound, Beijing, China; ,Center of Vascular Ultrasonography, Beijing Institute of Brain Disorders, Collaborative Innovation Center for Brain Disorders, Capital Medical University, 45 Changchun Road, Xicheng District, Beijing, 100053, China; ,Hongxiu Chen and Di Ma contributed equally to this work.
| | - Di Ma
- Department of Neurology, The First Hospital of Jilin University, Changchun, China,Hongxiu Chen and Di Ma contributed equally to this work.
| | - Feixue Yue
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Yajie Qi
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Manman Dou
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Liuping Cui
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Yingqi Xing
- Department of Vascular Ultrasonography, Xuanwu Hospital, Capital Medical University, Beijing, China; ,Beijing Diagnostic Center of Vascular Ultrasound, Beijing, China; ,Center of Vascular Ultrasonography, Beijing Institute of Brain Disorders, Collaborative Innovation Center for Brain Disorders, Capital Medical University, 45 Changchun Road, Xicheng District, Beijing, 100053, China; ,Address correspondence to this author at the Department of Vascular Ultrasonography, Xuanwu Hospital, Capital Medical University, Beijing Diagnostic Center of Vascular Ultrasound, Center of Vascular Ultrasonography, Beijing Institute of Brain Disorders, 45 Changchun Road, Xicheng District, Beijing, 100053, China; E-mail: This work is recommended by Pro Jiachun Feng, The First Hospital of Jilin University.
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7
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CCL18 Expression Is Higher in a Glioblastoma Multiforme Tumor than in the Peritumoral Area and Causes the Migration of Tumor Cells Sensitized by Hypoxia. Int J Mol Sci 2022; 23:ijms23158536. [PMID: 35955670 PMCID: PMC9369326 DOI: 10.3390/ijms23158536] [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: 07/12/2022] [Revised: 07/28/2022] [Accepted: 07/28/2022] [Indexed: 12/10/2022] Open
Abstract
Glioblastoma multiforme (GBM) is a brain tumor with a very poor prognosis. For this reason, researchers worldwide study the impact of the tumor microenvironment in GBM, such as the effect of chemokines. In the present study, we focus on the role of the chemokine CCL18 and its receptors in the GBM tumor. We measured the expression of CCL18, CCR8 and PITPNM3 in the GMB tumor from patients (16 men and 12 women) using quantitative real-time polymerase chain reaction. To investigate the effect of CCL18 on the proliferation and migration of GBM cells, experiments were performed using U-87 MG cells. The results showed that CCL18 expression was higher in the GBM tumor than in the peritumoral area. The women had a decreased expression of PITPNM3 receptor in the GBM tumor, while in the men a lower expression of CCR8 was observed. The hypoxia-mimetic agent, cobalt chloride (CoCl2), increased the expression of CCL18 and PITPNM3 and thereby sensitized U-87 MG cells to CCL18, which did not affect the proliferation of U-87 MG cells but increased the migration of the test cells. The results indicate that GBM cells migrate from hypoxic areas, which may be important in understanding the mechanisms of tumorigenesis.
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8
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Zou Y, Fang C, Wang Y, Li H, Guo X. Scutellarin protects cortical neurons against neonatal hypoxic-ischemic encephalopathy injury via upregulation of vascular endothelial growth factor. IBRAIN 2022; 8:353-364. [PMID: 37786736 PMCID: PMC10529008 DOI: 10.1002/ibra.12052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 06/17/2022] [Accepted: 06/19/2022] [Indexed: 10/04/2023]
Abstract
Neonatal hypoxic-ischemic encephalopathy (NHIE) causes devastating cerebral damage and neurological deficits that seldom have effective therapies. This study aimed to explore the mechanisms underlying the therapeutic efficacy of Scutellarin in NHIE. NHIE models were successfully established. Zea-longa score and triphenyte-trazoliumchloride (TTC) staining demonstrated that hypoxia and ischemia (HI) insult induced prominent neurological dysfunctions and brain infarction. Protein microarray was applied to detect the differentially expressed genes in the cortex, hippocampus, and lung tissues of HI rats, which revealed the downregulation of vascular endothelial growth factor (VEGF) in these tissues. Additionally, double immunostaining uncovered VEGF expression was localized in the neurons. Besides, VEGF was decreasingly expressed in oxygen-glucose deprivation (OGD) neurons, which was intriguingly reversed by Scutellarin treatment. Moreover, VEGF silencing increased OGD-induced neuronal apoptosis and attenuated neurite outgrowth, which was enhanced by Scutellarin administration. GeneMANIA predicted a close correlation of VEGF with caspase 3, caspase 7, and interleukin (IL)-1β, and qRT-PCR revealed that Scutellarin treatment depressed the expression levels of them elevated in OGD neurons, but the Scutellarin-depressed levels of these factors were prominently increased after VEGF silencing. Our findings suggested that Scutellarin exerted neuroprotective effects in NHIE potentially through mediating VEGF-targeted inactivation of caspase 3, caspase 7, and IL-1β.
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Affiliation(s)
- Yu Zou
- Department of NeurologyThe First Affiliated Hospital of Jinzhou Medical UniversityJinzhouChina
- Liaoning Key Laboratory of Diabetic Cognitive and Perceptive DysfunctionJinzhou Medical UniversityJinzhouChina
| | - Chang‐Le Fang
- Animal Zoology DepartmentKunming Medical UniversityKunmingChina
| | - Ya‐Ting Wang
- Animal Zoology DepartmentKunming Medical UniversityKunmingChina
| | - Hua Li
- Hemodialysis CenterRoyal Adelaide HospitalAdelaideSouth AustraliaAustralia
| | - Xi‐Liang Guo
- Liaoning Key Laboratory of Diabetic Cognitive and Perceptive DysfunctionJinzhou Medical UniversityJinzhouChina
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9
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Huang F, Luo L, Wu Y, Xia D, Xu F, Gao J, Shi J, Gong Q. Trilobatin promotes angiogenesis after cerebral ischemia-reperfusion injury via SIRT7/VEGFA signaling pathway in rats. Phytother Res 2022; 36:2940-2951. [PMID: 35537702 DOI: 10.1002/ptr.7487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 03/16/2022] [Accepted: 04/19/2022] [Indexed: 11/11/2022]
Abstract
Angiogenesis plays a pivotal role in the recovery of neurological function after ischemia stroke. Herein, we investigated the effect of trilobatin (TLB) on angiogenesis after cerebral ischemia-reperfusion injury (CIRI). The effect of TLB on angiogenesis after CIRI were investigated in mouse brain microvascular endothelium bEnd.3 cells and middle cerebral artery occlusion (MCAO)-induced CIRI rat model. The cell proliferation and angiogenesis were observed using immunofluorescence staining. The cell cycle, expressions of cell cycle-related proteins and SIRT 1-7 were determined by flow cytometry and western blot, respectively. The binding affinity of TLB with SIRT7 was predicted by molecular docking. The results showed that TLB concentration-dependently promoted bEnd.3 cell proportion in the S-phase. TLB significantly increased the protein expressions of SIRT6, SIRT7, and VEGFA, but not affected SIRT1-SIRT5 protein expressions. Moreover, TLB not only dramatically alleviated neurological impairment after CIRI, but also enhanced post-stroke neovascularization and newly formed functional vessels in cerebral ischemic penumbra. Furthermore, TLB up-regulated the protein expressions of CDK4, cyclin D1, VEGFA and its receptor VEGFR-2. Intriguingly, TLB not only directly bound to SIRT7, but also increased SIRT7 expression at day 28. Our findings reveal that TLB promotes cerebral microvascular endothelial cells proliferation, and facilitates angiogenesis after CIRI via mediating SIRT7/VEGFA signaling pathway in rats. Therefore, TLB might be a novel restorative agent to rescue ischemia stroke.
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Affiliation(s)
- Fengying Huang
- Key Laboratory of Basic Pharmacology of Ministry of Education and Guizhou Province, Zunyi Medical University, Zunyi, China.,Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
| | - Lingyu Luo
- Key Laboratory of Basic Pharmacology of Ministry of Education and Guizhou Province, Zunyi Medical University, Zunyi, China.,Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
| | - Yujia Wu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Guizhou Province, Zunyi Medical University, Zunyi, China.,Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
| | - Dianya Xia
- Key Laboratory of Basic Pharmacology of Ministry of Education and Guizhou Province, Zunyi Medical University, Zunyi, China.,Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
| | - Fan Xu
- Spemann Graduate School of Biology and Medicine (SGBM), Albert-Ludwigs-University Freiburg, Freiburg, Germany
| | - Jianmei Gao
- Key Laboratory of Basic Pharmacology of Ministry of Education and Guizhou Province, Zunyi Medical University, Zunyi, China.,Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China.,Department of Pharmacology, School of Pharmacy, Zunyi Medical University, Zunyi, China
| | - Jingshan Shi
- Key Laboratory of Basic Pharmacology of Ministry of Education and Guizhou Province, Zunyi Medical University, Zunyi, China.,Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
| | - Qihai Gong
- Key Laboratory of Basic Pharmacology of Ministry of Education and Guizhou Province, Zunyi Medical University, Zunyi, China.,Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
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Liu J, Wei E, Wei J, Zhou W, Webster KA, Zhang B, Li D, Zhang G, Wei Y, Long Y, Qi X, Zhang Q, Xu D. MiR-126-HMGB1-HIF-1 Axis Regulates Endothelial Cell Inflammation during Exposure to Hypoxia-Acidosis. DISEASE MARKERS 2021; 2021:4933194. [PMID: 34970357 PMCID: PMC8714334 DOI: 10.1155/2021/4933194] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Accepted: 11/20/2021] [Indexed: 02/05/2023]
Abstract
Crosstalk between molecular regulators miR-126, hypoxia-inducible factor 1-alpha (HIF-1-α), and high-mobility group box-1 (HMGB1) contributes to the regulation of inflammation and angiogenesis in multiple physiological and pathophysiological settings. Here, we present evidence of an overriding role for miR-126 in the regulation of HMGB1 and its downstream proinflammatory effectors in endothelial cells subjected to hypoxia with concurrent acidosis (H/A). Methods. Primary mouse endothelial cells (PMEC) were exposed to hypoxia or H/A to simulate short or chronic low-flow ischemia, respectively. RT-qPCR quantified mRNA transcripts, and proteins were measured by western blot. ROS were quantified by fluorogenic ELISA and luciferase reporter assays employed to confirm an active miR-126 target in the HMGB1 3'UTR. Results. Enhanced expression of miR-126 in PMECs cultured under neutral hypoxia was suppressed under H/A, whereas the HMGB1 expression increased sequentially under both conditions. Enhanced expression of HMGB1 and downstream inflammation markers was blocked by the premiR-126 overexpression and optimized by antagomiR. Compared with neutral hypoxia, H/A suppressed the HIF-1α expression independently of miR-126. The results show that HMGB1 and downstream effectors are optimally induced by H/A relative to neutral hypoxia via crosstalk between hypoxia signaling, miR-126, and HIF-1α, whereas B-cell lymphoma 2(Bcl2), a HIF-1α, and miR-126 regulated gene expressed optimally under neutral hypoxia. Conclusion. Inflammatory responses of ECs to H/A are dynamically regulated by the combined actions of hypoxia, miR-126, and HIF-1α on the master regulator HMGB1. The findings may be relevant to vascular diseases including atherosclerotic occlusion and interiors of plaque where coexisting hypoxia and acidosis promote inflammation as a defining etiology.
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Affiliation(s)
- Jinxue Liu
- Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Eileen Wei
- Gulliver High School, Miami, FL 33156, USA
| | - Jianqin Wei
- Department of Medicine Miller School of Medicine, University of Miami, Miami, FL 33136, USA
| | - Wei Zhou
- Department of Ophthalmology, Jiangmen Central Hospital, Affiliated Jiangmen Hospital of Sun Yat-Sen University, Jiangmen 529030, China
| | - Keith A. Webster
- Integene International, LLC, Miami, FL 33137, USA
- Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, TX 77030, USA
- Everglades Biopharma, LLC, Houston, TX 77030, USA
| | - Bin Zhang
- Department of Cardiology, Jiangmen Central Hospital, Affiliated Jiangmen Hospital of Sun Yat-Sen University, Jiangmen 529030, China
| | - Dong Li
- Department of Intensive Care Unit and Clinical Experimental Center, Jiangmen Central Hospital, Affiliated Jiangmen Hospital of Sun Yat-Sen University, Jiangmen 529030, China
| | - Gaoxing Zhang
- Department of Cardiology, Jiangmen Central Hospital, Affiliated Jiangmen Hospital of Sun Yat-Sen University, Jiangmen 529030, China
| | - Yidong Wei
- Department of Surgery, Youjiang Medical University for Nationalities, Chengxiang Rd, Baise, Guangxi 533000, China
| | - Yusheng Long
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangzhou 510080, China
- Department of Cardiology, Guangdong Cardiovascular Institute and Second School of Clinical Medicine, Southern Medical University, Guangzhou 510515, China
| | - Xiuyu Qi
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangzhou 510080, China
- Department of Cardiology, Guangdong Cardiovascular Institute and Shantou University Medical College, Shantou 515041, China
| | - Qianhuan Zhang
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangzhou 510080, China
| | - Dingli Xu
- Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
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11
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Jiang Q, Geng X, Warren J, Eugene Paul Cosky E, Kaura S, Stone C, Li F, Ding Y. Hypoxia Inducible Factor-1α (HIF-1α) Mediates NLRP3 Inflammasome-Dependent-Pyroptotic and Apoptotic Cell Death Following Ischemic Stroke. Neuroscience 2020; 448:126-139. [PMID: 32976985 DOI: 10.1016/j.neuroscience.2020.09.036] [Citation(s) in RCA: 110] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 09/08/2020] [Accepted: 09/15/2020] [Indexed: 12/19/2022]
Abstract
Stroke is a major cause of death and long-term disability. Recent evidence suggests that hypoxia-inducible factor 1α (HIF-1α), a transcription factor that regulates oxygen levels, plays a key role in neurological outcomes after ischemic stroke. Accordingly, we investigated the mechanism of HIF-1α on pyroptotic and apoptotic cells during ischemia/reperfusion (I/R). Adult Sprague-Dawley rats underwent 2 h of middle cerebral artery occlusion (MCAO). The rats were then exposed to 6 or 24 h of reperfusion, with or without YC-1 (HIF-1α inhibitor, 5 mg/kg). Infarct volumes, along with mRNA and protein quantities of HIF-1α, NLRP3, IL-1β, IL-18, Caspase-1, and co-localization of HIF-1α, and NLRP3, were assessed. We measured apoptotic and pyroptotic cell death, gasdermin D (GSDMD) activation and lactate dehydrogenase (LDH) activity, and the infiltration of neutrophils and macrophages after ischemic stroke. HIF-1α mRNA and NLRP3 inflammasome components were increased after 24 h of reperfusion. YC-1 significantly reduced the mRNA and protein expression of NLRP3, IL-1β, IL-18, and caspase-1; significantly decreased infarction and pyroptotic cell death after 24 h of reperfusion; attenuated the neuroinflammatory response by reducing infiltration of CD68- and MPO-positive cells after 24 h of reperfusion; and reduced apoptotic cell death following ischemic stroke. We found that HIF-1α likely regulates inflammatory responses through the NLRP3 inflammasome complex, thus influencing both apoptotic and pyroptotic cell death after stroke. These findings suggest that future investigations are needed regarding HIF-1α and its role as a potential molecular target in the treatment of acute ischemic stroke.
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Affiliation(s)
- Qian Jiang
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, China; Department of Neurology, Beijing Luhe Hospital, Capital Medical University, China
| | - Xiaokun Geng
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, China; Department of Neurology, Beijing Luhe Hospital, Capital Medical University, China; Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA.
| | - Jonathan Warren
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | | | - Shawn Kaura
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Christopher Stone
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Fengwu Li
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, China; Department of Neurology, Beijing Luhe Hospital, Capital Medical University, China
| | - Yuchuan Ding
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA; Department of Research & Development Center, John D. Dingell VA Medical Center, Detroit, MI, USA.
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12
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Kerget B, Afşin DE, Aksakal A, Aşkin S, Araz Ö. Could HIF-1α be a novel biomarker for the clinical course and treatment of pulmonary embolism? Turk J Med Sci 2020; 50:963-968. [PMID: 32421278 PMCID: PMC7379473 DOI: 10.3906/sag-1908-93] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2019] [Accepted: 05/16/2020] [Indexed: 11/03/2022] Open
Abstract
Background/aim Pulmonary embolism (PE) is associated with high morbidity and mortality rates if not diagnosed and treated rapidly. The aim of our study was to investigate the relationship between levels of hypoxia-induced factor-1 alpha (HIF-1α) and clinical course and prognosis in patients with intermediate low-risk, intermediate high-risk, and high-risk PE. Materials and methods The study included 240 subjects in 4 groups: a healthy control group (n = 60, mean age = 60 ± 15.2, female/male = 30/30 ), intermediate low-risk PE group (n = 60, mean age = 60 ± 12,5, female/male = 27/33), intermediate high-risk PE group (n = 60, mean age = 61,4 ± 14,8, female/male = 36/24), and high-risk PE group (n = 60, mean age = 62,3 ± 15, female/male = 33/27). Plasma HIF-1α levels were measured using commercial enzyme-linked immunosorbent assay (ELISA) kit. Results Comparison of HIF-1α levels revealed a statistically significant difference between the groups in proportion to clinical scoring (P = 0.001 for all). Comparison of initial HIF-1α and troponin levels in intermediate high-risk PE patients given thrombolytic therapy and those treated with enoxaparin sodium showed that HIF-1α levels were significantly higher in the group that received thrombolytic therapy (P = 0.001), while there was no difference in troponin levels (P = 0.146). Conclusion HIF-1α can be used in the PE clinical risk stratification and monitoring of PE and may also serve as a valuable early indicator in intermediate high-risk PE, for which early reperfusion therapy is important.
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Affiliation(s)
- Buğra Kerget
- Department of Pulmonary Diseases, Health Sciences University Erzurum Regional Education and Research Hospital, Erzurum, Turkey
| | | | - Alperen Aksakal
- Department of Pulmonary Diseases, School of Medicine, Atatürk University, Erzurum, Turkey
| | - Seda Aşkin
- Department of Biochemistry, School of Medicine, Atatürk University, Erzurum, Turkey
| | - Ömer Araz
- Department of Pulmonary Diseases, School of Medicine, Atatürk University, Erzurum, Turkey
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Chen M, Chen Q, Tao T. Tanshinone IIA Promotes M2 Microglia by ERβ/IL-10 Pathway and Attenuates Neuronal Loss in Mouse TBI Model. Neuropsychiatr Dis Treat 2020; 16:3239-3250. [PMID: 33408474 PMCID: PMC7781361 DOI: 10.2147/ndt.s265478] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 11/23/2020] [Indexed: 12/17/2022] Open
Abstract
PURPOSE Traumatic brain injury (TBI) is a major cause of morbidity and mortality worldwide. Increasing evidence indicates that activated microglia play an important role in the inflammatory response in TBI. Inhibiting M1 and stimulating M2 activated microglia have protective effects in several animal models of central nervous system (CNS) disorders. In the present study, we investigated whether tanshinone IIA (TNA) protects neurons by shifting microglia polarization in a mouse TBI model and further investigated the mechanism in vitro. MATERIALS AND METHODS Forty C57BL/6 mice were used to investigate the effect of TNA on microglia polarization in TBI. BV-2 cells were used to examine the mechanism of TNA in regulating microglia polarization. RESULTS Normal saline (NS), TNA and the combination of TNA with ICI 182,780 (ICI, an estrogen receptor antagonist) were used to treat the TBI mice. After TBI, mice from each group demonstrated functional improvement. The improvement rate in mice treated with TNA was faster than other groups. ICI partially reversed the benefits from TNA treatment. TNA treatment significantly reduced TBI-induced neuronal loss. The number of microglia after TBI was not significantly changed by TNA treatment. However, TNA treatment significantly decreased M1 macrophage markers (iNOS, TNFα and IL-1β) and increased M2 macrophage markers (CD206, arginase 1 and Ym1). This effect was partially abolished by ICI. TNA treatment downregulated M1 macrophage markers and upregulated M2 macrophage markers in BV-2 cells under LPS stimulation. IL-10 was significantly increased by TNA treatment without a significantly change of IL-4 and IL-13 expression. IL-10 knockdown completely abolished the effect of TNA on microglial M2 polarization. CONCLUSION Taken together, our data demonstrated that TNA attenuates neuronal loss in mouse TBI model and promotes M2 microglia by ERβ/IL-10 pathway. Thus, TNA could be a potential drug for TBI and/or the disorders that caused by microglial over-activation in CNS.
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Affiliation(s)
- Mingrui Chen
- Department of Neurosurgery, Chongqing Red Cross Hospital (People's Hospital of Jiangbei District), Jiangbei, Chongqing 400020, People's Republic of China
| | - Qiulin Chen
- Department of Neurosurgery, Chongqing Red Cross Hospital (People's Hospital of Jiangbei District), Jiangbei, Chongqing 400020, People's Republic of China
| | - Tao Tao
- Department of Rehabilitation Medicine, Guizhou Provincial People's Hospital, Guiyang, Guizhou 550002, People's Republic of China
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