1
|
Li S, Zhu P, Wang Y, Huang S, Wu Z, He J, Hu X, Wang Y, Yuan Y, Zhao B, Ma G, Li Y. miR-181a targets PTEN to mediate the neuronal injury caused by oxygen-glucose deprivation and reoxygenation. Metab Brain Dis 2023; 38:2077-2091. [PMID: 37178238 DOI: 10.1007/s11011-023-01219-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 04/18/2023] [Indexed: 05/15/2023]
Abstract
Evidence suggests that the microRNA-181 (miR-181) family performs various roles in the pathophysiology of cerebral ischemia and reperfusion injury (CIRI). MiR-181a has been identified as a critical determinant of neuronal survival. Moreover, the significance of miR-181a in controlling neuronal death after CIRI has received little attention. The objective of this study was to assess the role of miR-181a in neuronal cell injury after CIRI. To mimic the in-vitro and in-vivo CIRI, we developed an oxygen-glucose deficiency/reoxygenation (OGD/R) model in SH-SY5Y cells and a transient middle cerebral artery occlusion model in rats. MiR-181a expression was significantly higher in both in-vivo and in-vitro CIRI models. The overexpression of miR-181a increased cell damage and oxidative stress caused by OGD/R, whereas inhibition of miR-181a reduced both. PTEN has also been found to be a direct miR-181a target. PTEN overexpression reduced cell apoptosis and oxidative stress induced by miR-181a upregulation under an OGD/R condition. Furthermore, we found that the rs322931 A allele was related to increased miR-181a levels in IS peripheral blood and higher susceptibility to IS. The current results offer new insights into the understanding of the molecular pathophysiology of CIRI, as well as possible new treatment candidates.
Collapse
Affiliation(s)
- Shengnan Li
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
- Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
- Institute of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
| | - Peiyi Zhu
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
- Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
| | - Yajun Wang
- Shunde Maternal and Children's Hospital, Maternal and Children's Health Research Institute, Guangdong Medical University, Shunde, 528300, China
| | - Shaoting Huang
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
- Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
- Institute of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
| | - Zhaochun Wu
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
- Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
| | - Jiawen He
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
- Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
| | - Xingjuan Hu
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
- Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
| | - Ying Wang
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
- Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
| | - Yanquan Yuan
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
- Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
| | - Bin Zhao
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
- Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
- Institute of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
| | - Guoda Ma
- Shunde Maternal and Children's Hospital, Maternal and Children's Health Research Institute, Guangdong Medical University, Shunde, 528300, China.
| | - You Li
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China.
- Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China.
- Institute of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China.
| |
Collapse
|
2
|
Liang E, Xiao S, Zhao C, Zhang Y, Fu G. M6A modification promotes blood-brain barrier breakdown during cerebral ischemia/reperfusion injury through increasing matrix metalloproteinase 3 expression. Heliyon 2023; 9:e16905. [PMID: 37332938 PMCID: PMC10275791 DOI: 10.1016/j.heliyon.2023.e16905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 04/26/2023] [Accepted: 05/31/2023] [Indexed: 06/20/2023] Open
Abstract
Blood-brain barrier (BBB) breakdown is a critical event in cerebral ischemia-reperfusion (I/R) injury, and matrix metalloproteinases (MMPs), which are proteolytic enzymes, play essential roles in BBB breakdown through degrading the extracellular matrix. N6-Methyladenosine (m6A), the most common and reversible mRNA modification, has an important role in the progression of cerebral I/R injury. However, whether m6A is related to BBB breakdown and MMPs expression in cerebral I/R injury is still not clear. In this study, we explored the potential effects of m6A modification on BBB breakdown in cerebral I/R injury and its underlying mechanisms using mice subjected to transient middle cerebral artery occlusion and reperfusion (MCAO/R), and mouse brain endothelial cells treated with oxygen-glucose deprivation and reoxygenation (OGD/R). We find that MMP3 expression is highly expressed and positively associated with the m6A writer CBLL1 (Cbl proto-oncogene like 1) in cerebral I/R injury in vivo and in vitro. Furthermore, MMP3 mRNA occurs m6A modification in mouse brain endothelial cells, and the m6A modification level of MMP3 mRNA is significantly increased in cerebral I/R injury. Moreover, inhibition of m6A modification reduces MMP3 expression and ameliorates BBB breakdown in cerebral I/R in vivo and in vitro. In conclusion, m6A modification promotes BBB breakdown in cerebral I/R injury through increasing MMP3 expression, indicating that m6A may be a potential therapeutic target for cerebral I/R injury.
Collapse
Affiliation(s)
- En Liang
- Department of Neurosurgery, Guangzhou PanYu He Xian Memorial Hospital, Guangzhou, 511442, PR China
| | - Shaorong Xiao
- Centre for Integrative Medicine, School of Basic Medical Science, Guangzhou University of Chinese Medicine, Guangzhou, 510006, PR China
| | - Changtong Zhao
- Department of Neurosurgery, Guangzhou PanYu He Xian Memorial Hospital, Guangzhou, 511442, PR China
| | - Yu Zhang
- Shenzhen Bao'an Traditional Chinese Medicine Hospital, Guangzhou University of Chinese Medicine, Shenzhen, 518133, PR China
| | - Guanglei Fu
- Department of Neurology, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, PR China
| |
Collapse
|
3
|
Xu A, Li W, Cai J, Wen Z, Wang K, Chen Y, Li X, Guan D, Duan C. Screening of key functional components of Taohong Siwu Decoction on ischemic stroke treatment based on multiobjective optimization approach and experimental validation. BMC Complement Med Ther 2023; 23:178. [PMID: 37264383 DOI: 10.1186/s12906-023-03990-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 05/05/2023] [Indexed: 06/03/2023] Open
Abstract
BACKGROUND Taohong Siwu Decoction (THSWD) is a widely used traditional Chinese medicine (TCM) prescription in the treatment of ischemic stroke. There are thousands of chemical components in THSWD. However, the key functional components are still poorly understood. This study aimed to construct a mathematical model for screening of active ingredients in TCM prescriptions and apply it to THSWD on ischemic stroke. METHODS Botanical drugs and compounds in THSWD were acquired from multiple public TCM databases. All compounds were initially screened by ADMET properties. SEA, HitPick, and Swiss Target Prediction were used for target prediction of the filtered compounds. Ischemic stroke pathological genes were acquired from the DisGeNet database. The compound-target-pathogenic gene (C-T-P) network of THSWD was constructed and then optimized using the multiobjective optimization (MOO) algorithm. We calculated the cumulative target coverage score of each compound and screened the top compounds with 90% coverage. Finally, verification of the neuroprotective effect of these compounds was performed with the oxygen-glucose deprivation and reoxygenation (OGD/R) model. RESULTS The optimized C-T-P network contains 167 compounds, 1,467 predicted targets, and 1,758 stroke pathological genes. And the MOO model showed better optimization performance than the degree model, closeness model, and betweenness model. Then, we calculated the cumulative target coverage score of the above compounds, and the cumulative effect of 39 compounds on pathogenic genes reached 90% of all compounds. Furthermore, the experimental results showed that decanoic acid, butylphthalide, chrysophanol, and sinapic acid significantly increased cell viability. Finally, the docking results showed the binding modes of these four compounds and their target proteins. CONCLUSION This study provides a methodological reference for the screening of potential therapeutic compounds of TCM. In addition, decanoic acid and sinapic acid screened from THSWD were found having potential neuroprotective effects first and verified with cell experiments, however, further in vitro and in vivo studies are needed to explore the precise mechanisms involved.
Collapse
Affiliation(s)
- Anqi Xu
- Department of Cerebrovascular Surgery, Neurosurgery Center, Zhujiang Hospital, Southern Medical University, No.253. Gongye Middle Avenue, Haizhu District, Guangzhou, 510280, Guangdong, China
| | - Wenxing Li
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, Guangdong, China
- Guangdong Provincial Key Laboratory of Single Cell Technology and Application, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Jieqi Cai
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, Guangdong, China
- Guangdong Provincial Key Laboratory of Single Cell Technology and Application, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Zhuohua Wen
- Department of Cerebrovascular Surgery, Neurosurgery Center, Zhujiang Hospital, Southern Medical University, No.253. Gongye Middle Avenue, Haizhu District, Guangzhou, 510280, Guangdong, China
| | - Kexin Wang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, Guangdong, China
- Guangdong Provincial Key Laboratory of Single Cell Technology and Application, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Yupeng Chen
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, Guangdong, China
- Guangdong Provincial Key Laboratory of Single Cell Technology and Application, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Xifeng Li
- Department of Cerebrovascular Surgery, Neurosurgery Center, Zhujiang Hospital, Southern Medical University, No.253. Gongye Middle Avenue, Haizhu District, Guangzhou, 510280, Guangdong, China.
| | - Daogang Guan
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, Guangdong, China.
- Guangdong Provincial Key Laboratory of Single Cell Technology and Application, Southern Medical University, Guangzhou, 510515, Guangdong, China.
| | - Chuanzhi Duan
- Department of Cerebrovascular Surgery, Neurosurgery Center, Zhujiang Hospital, Southern Medical University, No.253. Gongye Middle Avenue, Haizhu District, Guangzhou, 510280, Guangdong, China.
| |
Collapse
|
4
|
Yi S, Zhang C, Li N, Fu Y, Li H, Zhang J. miR-325-3p Protects Neurons from Oxygen-Glucose Deprivation and Reoxygenation Injury via Inhibition of RIP3. Dev Neurosci 2020; 42:83-93. [PMID: 33130681 DOI: 10.1159/000509108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 06/01/2020] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVE Recent reports have corroborated that micro-RNAs (miRs) are related to the pathological changes of cerebral ischemia-reperfusion (CIR) induced injury. This work aimed to unearth the role and potential mechanism of miR-325-3p in regulating neuronal survival in CIR injury. METHODS To conduct this investigation, we established an in vitro model of CIR injury by subjecting neurons to oxygen-glucose deprivation and reoxygenation (OGD/R). Gain and loss of function of miR-325-3p and receptor-interacting serine-threonine kinase 3 (RIP3) in neurons were performed to observe its effect on cell apoptosis and the release of lactate dehydrogenase. The levels of miR-325-3p and RIP3 in neurons were detected by qRT-PCR. Western blot was employed to inspect the levels of caspase3, Bax, and Bcl-2, as well as p38 and JNK phosphorylation. The relationship between miR-325-3p and RIP3 was detected by TargetScan and validated by dual-luciferase reporter assay. RESULTS Firstly, miR-325-3p expression was obviously downregulated while RIP3 expression was upregulated in neurons following OGD/R treatment. Overexpressed miR-325-3p or downexpressed RIP3 ameliorated OGD/R-induced neuronal injury. Besides, RIP3 was a direct target mRNA of miR-325-3p. Additionally, Western blot revealed the mitogen-activated protein kinase (MAPK) pathway was involved in the regulation of miR-325-3p on OGD/R-induced neuronal injury. Furthermore, miR-325-3p was verified to hinder OGD/R-induced neuronal injury through downregulating RIP3. CONCLUSION This study demonstrated that miR-325-3p targets RIP3 to inactivate the MAPK pathway, thereby protecting neurons against OGD/R-induced injury.
Collapse
Affiliation(s)
- Song Yi
- Department of Orthodontics, School and Hospital of Stomatology, Shandong University, Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
- Department of Orthodontics, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Chuqin Zhang
- Department of Otorhinolaryngology, The 2nd Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Na Li
- Department of Stomatology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Yajing Fu
- Department of Orthodontics, School and Hospital of Stomatology, Shandong University, Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - Hongkun Li
- Department of Orthodontics, School and Hospital of Stomatology, Shandong University, Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - Jun Zhang
- Department of Orthodontics, School and Hospital of Stomatology, Shandong University, Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China,
| |
Collapse
|
5
|
Wang HJ, Tang XL, Huang G, Li YB, Pan RH, Zhan J, Wu YK, Liang JF, Bai XX, Cai J. Long Non-Coding KCNQ1OT1 Promotes Oxygen-Glucose-Deprivation/Reoxygenation-Induced Neurons Injury Through Regulating MIR-153-3p/FOXO3 Axis. J Stroke Cerebrovasc Dis 2020; 29:105126. [PMID: 32912499 DOI: 10.1016/j.jstrokecerebrovasdis.2020.105126] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 06/15/2020] [Accepted: 07/01/2020] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Long non-coding RNAs (LncRNAs) have been reported to play important roles in the pathogenesis and development of many diseases, including cerebral ischemia and reperfusion (I/R) injury. In this study, we aimed to investigate the role of LncRNA-Potassium Voltage-Gated Channel Subfamily Q Member 1 opposite strand/antisense transcript 1 (KCNQ1OT1) in cerebral I/R induced neuronal injury, and its underlying mechanisms. METHODS Primary mouse cerebral cortical neurons treated with oxygen-glucose deprivation and reoxygenation (OGD/R) in vitro and mice subjected to middle cerebral artery occlusion (MCAO) and reperfusion were used to mimic cerebral I/R injury. Small inference RNA (siRNA) was used to knockdown KCNQ1OT1 or microRNA-153-3p (miR-153-3p). Dual-luciferase assay was performed to detect the interaction between KCNQ1OT1 and miR-153-3p and interaction between miR-153-3p and Fork head box O3a (Foxo3). Flow cytometry analysis was performed to detect neuronal apoptosis. qRT-PCR and Western blotting were performed to detect RNA and protein expressions. RESULTS KCNQ1OT1 and Foxo3 expressions were significantly increased in neurons subjected to I/R injury in vitro and in vivo, and miR-153-3p expression were significantly decreased. Knockdown of KCNQ1OT1 or overexpression of miR-153-3p weakened OGD/R-induced neuronal injury and regulated Foxo3 expressions. Dual-luciferase analysis showed that KCNQ1OT1 directly interacted with miR-153-3p and Foxo3 is a direct target of miR-153-3p. CONCLUSIONS Our results indicate that LncRNA-KCNQ1OT1 promotes OGD/R-induced neuronal injury at least partially through acting as a competing endogenous RNA (ceRNA) for miR-153-3p to regulate Foxo3a expression, suggesting LncRNA-KCNQ1OT1 as a potential therapeutic target for cerebral I/R injury.
Collapse
Affiliation(s)
- Hua-Jun Wang
- Diagnosis and Treatment Center of Encephalopathy, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510120, China; Department of Neurosurgery, Hospital of Guangzhou University Mega Center, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510006, China
| | - Xia-Lin Tang
- Diagnosis and Treatment Center of Encephalopathy, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510120, China
| | - Gan Huang
- Postdoctoral Center, Yangjiang Hospital of Chinese Medicine, Yangjiang 529500, China
| | - Ying-Bin Li
- Department of Neurosurgery, Hospital of Guangzhou University Mega Center, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510006, China
| | - Rui-Huan Pan
- Diagnosis and Treatment Center of Encephalopathy, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510120, China
| | - Jie Zhan
- Diagnosis and Treatment Center of Encephalopathy, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510120, China
| | - Ye-Kun Wu
- Postdoctoral Center, Yangjiang Hospital of Chinese Medicine, Yangjiang 529500, China
| | - Jian-Feng Liang
- Postdoctoral Center, Yangjiang Hospital of Chinese Medicine, Yangjiang 529500, China
| | - Xiao-Xin Bai
- Diagnosis and Treatment Center of Encephalopathy, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510120, China; Department of Neurosurgery, Hospital of Guangzhou University Mega Center, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510006, China.
| | - Jun Cai
- Diagnosis and Treatment Center of Encephalopathy, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510120, China; Department of Neurosurgery, Hospital of Guangzhou University Mega Center, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510006, China.
| |
Collapse
|
6
|
Gao M, Fu J, Wang Y. The lncRNA FAL1 protects against hypoxia-reoxygenation- induced brain endothelial damages through regulating PAK1. J Bioenerg Biomembr 2020; 52:17-25. [PMID: 31927658 DOI: 10.1007/s10863-019-09819-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 12/12/2019] [Indexed: 01/03/2023]
Abstract
Dysregulation of cerebral microvascular endothelial cells plays an important role in the pathogenesis of stroke. However, the underlying mechanisms still need to be elucidated. In the current study, we found that the long non-coding RNA (lncRNA) FAL1 was significantly reduced in response to oxygen-glucose deprivation and reoxygenation (OGD/R) stimulation in human primary brain microvascular endothelial cells (HBMVECs). Interestingly, overexpression of FAL1 ameliorated OGD/R-induced oxidative stress by reducing the production of reactive oxygen species (ROS) and increasing the level of reduced glutathione (GSH). Also, overexpression of FAL1 suppressed OGD/R-induced secretions of interleukin-6 (IL-6), monocyte chemotactic protein-1 (MCP-1), and high mobility group box-1 (HMGB-1). We then found that OGD/R-induced reduction of cell viability and release of lactate dehydrogenase (LDH) were prevented by overexpression of FAL1. Additionally, exposure to OGD/R significantly reduced the phosphorylated levels of PAK1 and AKT as well as the total level of proliferating cell nuclear antigen (PCNA), which was restored by overexpression of FAL1. Importantly, overexpression of FAL1 restored OGD/R-induced reduction in the expression of endothelial nitric oxide synthase (eNOS) and the subsequent release of nitric oxide (NO). Our results implicate that FAL1 might be involved in the process of brain endothelial cell damage.
Collapse
Affiliation(s)
- Mingqing Gao
- Department of Neurosurgery, The Affiliated Hospital of Wei fang Medical University, No. 2428, Yuhe Road, Weifang, 261031, Shandong, China
| | - Jieting Fu
- Department of Hematology, The Affiliated Hospital of Wei fang Medical University, Shandong, China
| | - Yanqiang Wang
- Department of Neurology, The Affiliated Hospital of Wei fang Medical University, Shandong, China.
| |
Collapse
|
7
|
Chen J, Sun L, Ding GB, Chen L, Jiang L, Wang J, Wu J. Oxygen-Glucose Deprivation/Reoxygenation Induces Human Brain Microvascular Endothelial Cell Hyperpermeability Via VE-Cadherin Internalization: Roles of RhoA/ROCK2. J Mol Neurosci 2019; 69:49-59. [PMID: 31187440 DOI: 10.1007/s12031-019-01326-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 04/22/2019] [Indexed: 12/19/2022]
Abstract
The destruction of the blood-brain barrier (BBB) contributes to a spectrum of neurological diseases such as stroke, and the hyperpermeability of endothelial cells is one of the characters of stroke, which is possibly exacerbated after reperfusion. However, the underlying mechanisms involving hyperpermeability after reperfusion between the endothelial cells remain poorly understood. Therefore, in the present study, the human microvascular endothelial cells (HBMECs) were exposed to oxygen-glucose deprivation/reperfusion (OGD/R) to mimic ischemic stroke condition in vitro with the aim to investigate the potential mechanisms induced by OGD/R. The permeability of cultured HBMECs was measured using FITC-labeled dextran in a Transwell system and transendothelial electrical resistance (TEER), while the RhoA activity was detected by pull-down assay. In addition, the phosphorylation of MYPT1, which reflects the activation of ROCK and the internalization of VE-cadherin, was detected by Western blot. It showed that OGD/R treatment significantly increased the permeability of HBMEC monolayers and facilitated the internalization of VE-cadherin in HBMEC monolayers. Pull-down assay showed that RhoA activation was obviously enhanced after OGD/R treatment, while RhoA and ROCK inhibitor significantly reversed OGD/R-induced HBMEC monolayers hyperpermeability and the internalization of VE-cadherin. Meanwhile, the knockdown assay showed that RhoA small interfering RNA (siRNA) led to similar effects. The inactivation of the downstream effector protein ROCK was also examined. Intriguingly, ROCK2 rather than ROCK1 exerted its adverse effects on HBMEC monolayer integrity, since ROCK2 knockdown markedly reverses the injury of OGD/R in HBMEC monolayers. In conclusion, the present study provides evidence that OGD/R may induce HBMEC monolayer hyperpermeability via RhoA/ROCK2-mediated VE-cadherin internalization, which may provide an impetus for the development of therapeutics targeting BBB damage in ischemic stroke.
Collapse
Affiliation(s)
- Jie Chen
- Department of Neurology, the Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Li Sun
- Department of Neurology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Gui-Bing Ding
- Department of Neurology, the Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Liang Chen
- Department of Neurology, the Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Lei Jiang
- Department of Emergency Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jun Wang
- The Laboratory of Neurotoxicology, School of Public Health, Nanjing Medical University, Nanjing, China.
| | - Jin Wu
- Department of Neurology, the Second Affiliated Hospital of Nanjing Medical University, Nanjing, China.
| |
Collapse
|
8
|
Zhang Y, Shan Z, Zhao Y, Ai Y. Sevoflurane prevents miR-181a-induced cerebral ischemia/reperfusion injury. Chem Biol Interact 2019; 308:332-338. [PMID: 31170386 DOI: 10.1016/j.cbi.2019.06.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 05/19/2019] [Accepted: 06/03/2019] [Indexed: 11/27/2022]
Abstract
BACKGROUND Sevoflurane (sevo) has been reported to be an effective neuroprotective agent in cerebral ischemia/reperfusion injury (CIRI). However, the precise molecular mechanism underlying sevo preconditioning in CIRI remains largely unknown. METHODS A middle cerebral artery occlusion (MCAO) rat model and primary cortical neurons after oxygen-glucose deprivation and reoxygenation (OGDR) were used as the in vivo and in vitro models of CIRI. The expression profiles of miR-181a and X chromosome-linked inhibitor-of-apoptosis protein (XIAP) in the cerebral cortex of rats and in cortical neurons were examined by qRT-PCR and Western blot, respectively. The infarct volumes were measured by TTC staining and neurological deficits in rats was determined by Zea-Longa scoring criteria. The cell viability, lactate dehydrogenase (LDH) release and apoptotic rate were detected in cortical neurons by MTT assay, LDH analysis and flow cytometry. Western blot analysis was performed to assess the expression of apoptosis-related protein. Luciferase reporter assay was used to confirm the interaction between miR-181a and XIAP. RESULTS miR-181a was upregulated and XIAP was downregulated in rats after MCAO. Sevo preconditioning attenuated miR-181a expression and promoted XIAP level in a rat model of CIRI. Sevo preconditioning ameliorated anti-miR-181a-mediated protective effects on cerebral ischemia in rat model of CIRI, presented as the decrease of infarct volume, neurological deficit and apoptosis. Moreover, sevo pretreatment abated miR-181a-induced cellular injury in primary cortical neurons after OGD, embodied by the increase of cell viability, the reduction of LDH release and the decline of apoptosis. Furthermore, miR-181a suppressed XIAP expression by binding to its 3'UTR in cortical neurons, and sevo-mediated increase on XIAP expression was counteracted by miR-181 overexpression in OGDR-treated neurons. CONCLUSION Sevo preconditioning protected against CIRI in vitro and in vivo possibly by inhibiting miR-181a and facilitating XIAP.
Collapse
Affiliation(s)
- Yanan Zhang
- Department of Anesthesiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China
| | - Zhengzheng Shan
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China
| | - Yanling Zhao
- Department of Anesthesiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China
| | - Yanqiu Ai
- Department of Anesthesiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China.
| |
Collapse
|
9
|
Tao T, Feng JZ, Xu GH, Fu J, Li XG, Qin XY. Minocycline Promotes Neurite Outgrowth of PC12 Cells Exposed to Oxygen-Glucose Deprivation and Reoxygenation Through Regulation of MLCP/MLC Signaling Pathways. Cell Mol Neurobiol 2017; 37:417-26. [PMID: 27098315 DOI: 10.1007/s10571-016-0374-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 12/17/2015] [Indexed: 10/21/2022]
Abstract
Minocycline, a semi-synthetic second-generation derivative of tetracycline, has been reported to exert neuroprotective effects both in animal models and in clinic trials of neurological diseases. In the present study, we first investigated the protective effects of minocycline on oxygen-glucose deprivation and reoxygenation-induced impairment of neurite outgrowth and its potential mechanism in the neuronal cell line, PC12 cells. We found that minocycline significantly increased cell viability, promoted neurite outgrowth and enhanced the expression of growth-associated protein-43 (GAP-43) in PC12 cells exposed to oxygen-glucose deprivation/reoxygenation injury. In addition, immunoblots revealed that minocycline reversed the overexpression of phosphorylated myosin light chain (MLC) and the suppression of activated extracellular signal-regulated kinase 1/2 (ERK1/2) caused by oxygen-glucose deprivation/reoxygenation injury. Moreover, the minocycline-induced neurite outgrowth was significantly blocked by Calyculin A (1 nM), an inhibitor of myosin light chain phosphatase (MLCP), but not by an ERK1/2 inhibitor (U0126; 10 μM). These findings suggested that minocycline activated the MLCP/MLC signaling pathway in PC12 cells after oxygen-glucose deprivation/reoxygenation injury, which resulted in the promotion of neurite outgrowth.
Collapse
|