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Li F, Zhou F, Yang B. MicroRNA152-3p Protects Against Ischemia/Reperfusion-Induced Bbb Destruction Possibly Targeting the MAP3K2/JNK/c-Jun Pathway. Neurochem Res 2022; 48:1293-1304. [PMID: 36445489 PMCID: PMC10066145 DOI: 10.1007/s11064-022-03828-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/28/2022] [Accepted: 11/14/2022] [Indexed: 11/30/2022]
Abstract
AbstractIn the current study, we reported that overexpression of miR-152-3p effectively ameliorated neurological deficits and protected blood-brain barrier(BBB) integrity in middle cerebral artery occlusion (MCAO) rats. In an in vitro model, the level of miR-152-3p was significantly decreased in bEnd.3 cells after oxygen–glucose deprivation/reperfusion (OGD/R) insult. miR-152-3p overexpressing bEnd.3 cell monolayers were protected from OGD/R-induced microvascular hyperpermeability. The miR-152-3p-mediated protective effect was associated with lower apoptosis of endothelia by negatively modulating the MAP3K2/JNK/c-Jun pathway.
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Affiliation(s)
- Fei Li
- Department of Neurology, Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Fangfang Zhou
- Department of Neurology, 2nd Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Binbin Yang
- Department of Neurology, 2nd Xiangya Hospital, Central South University, Changsha, Hunan, China.
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Ischemic Postconditioning Protects against Aged Myocardial Ischemia/Reperfusion Injury by Transcriptional and Epigenetic Regulation of miR-181a-2-3p. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:9635674. [PMID: 35656020 PMCID: PMC9155916 DOI: 10.1155/2022/9635674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 04/06/2022] [Accepted: 04/15/2022] [Indexed: 11/30/2022]
Abstract
Ischemic postconditioning (IPostC) has been proposed as a strategy to mitigate the risk of ischemia/reperfusion (I/R) injury, and autophagy is involved in I/R-induced aged myocardial injury, while the underlying mechanism of IPostC-regulated autophagy is unknown. Here, we implemented miRNA sequencing analysis in aged cardiomyocytes to identify a novel miR-181a-2-3p after HPostC, which inhibits autophagy by targeting AMBRA1 in aged myocardium to protect I/R-induced aged myocardial injury. Mechanistically, we identified that IPostC can induce DNA hypomethylation and H3K14 hyperacetylation of miR-181a-2-3p promoter due to the decreased binding of DNMT3b and HDAC2 at its promoter, which contributes to enhancing the expression of miR-181a-2-3p. More importantly, cooperation of DNMT3b and HDAC2 inhibits the binding of c-Myc at the miR-181a-2-3p promoter in aged cardiomyocytes. In summary, IPostC attenuates I/R-induced aged myocardial injury through upregulating miR-181a-2-3p expression, which is an attribute to transcriptional and epigenetic regulation of its promoter. Our data indicate that miR-181a-2-3p may be a potential therapeutic target against I/R injury in aged myocardium.
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MiR-361-3p alleviates cerebral ischemia–reperfusion injury by targeting NACC1 through the PINK1/Parkin pathway. J Mol Histol 2022; 53:357-367. [DOI: 10.1007/s10735-021-10049-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 12/07/2021] [Indexed: 10/19/2022]
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Zhao Z, Wu C, He X, Zhao E, Hu S, Han Y, Wang T, Chen Y, Liu T, Huang S. MicroRNA let-7f alleviates vascular endothelial cell dysfunction via targeting HMGA2 under oxygen-glucose deprivation and reoxygenation. Brain Res 2021; 1772:147662. [PMID: 34529965 DOI: 10.1016/j.brainres.2021.147662] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 08/26/2021] [Accepted: 09/08/2021] [Indexed: 01/22/2023]
Abstract
Stroke is a fatal disease with high disability and mortality and there is no credible treatment for stroke at present. Studies on stroke are extensively developed to explore the underlying mechanisms of ischemic and reperfusion injuries. Herein, we investigated the functions of microRNA let-7f (also termed let-7f-5p) in vascular endothelial cell dysfunction. The bEnd.3 cells were stimulated with oxygen-glucose deprivation and reoxygenation (OGD/R) to mimic cell injury in vitro. CCK-8 assays, flow cytometry and western blot analyses were conducted to examine the viability and apoptosis of bEnd.3 cells. Reverse transcription quantitative polymerase chain reaction analyses were employed to measure RNA expression. Endothelial cell permeability in vitro assay was employed to assess endothelial permeability of bEnd.3 cells, and expression levels of proteins associated with cell apoptosis or blood-brain barrier (BBB) were detected by western blot analyses. Luciferase reporter assay was conducted to explore the combination between let-7f and HMGA2. We found that OGD/R induced injuries on endothelial cells (bEnd.3) by decreasing cell viability and promoting cell apoptosis. Let-7f exhibited low expression in bEnd.3 cells under OGD/R. Let-7f overexpression increased the viability of bEnd.3 cells and inhibited cell apoptosis. In addition, the endothelial permeability of bEnd.3 cells was increased by OGD/R and reversed by let-7f overexpression. The levels of tight junction proteins (ZO-1 and occludin) were downregulated by OGD/R and then reversed by let-7f overexpression. Mechanistically, HMGA2 is a target gene of let-7f and its expression was negatively regulated by let-7f. Rescue assays revealed that HMGA2 overexpression reversed the effects of let-7f overexpression on cell viability, cell apoptosis, endothelial permeability, and BBB function. In conclusion, let-7f alleviates vascular endothelial cell dysfunction by downregulating HMGA2 expression under OGD/R.
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Affiliation(s)
- Zhongyan Zhao
- Department of Neurology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou 570311, Hainan, China
| | - Chanji Wu
- Department of Neurology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou 570311, Hainan, China
| | - Xiangying He
- Department of Neurology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou 570311, Hainan, China
| | - Eryi Zhao
- Department of Neurology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou 570311, Hainan, China
| | - Shijun Hu
- Department of Neurology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou 570311, Hainan, China
| | - Yeguang Han
- Department of Central Laboratory, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou 570311, Hainan, China
| | - Ting Wang
- Department of Neurology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou 570311, Hainan, China
| | - Yanquan Chen
- Department of Neurology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou 570311, Hainan, China
| | - Tao Liu
- Department of Neurology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou 570311, Hainan, China.
| | - Shixiong Huang
- Department of Neurology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou 570311, Hainan, China.
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Zhao Z, Wu C, He X, Zhao E, Hu S, Han Y, Wang T, Chen Y, Liu T, Huang S. miR-152-3p aggravates vascular endothelial cell dysfunction by targeting DEAD-box helicase 6 (DDX6) under hypoxia. Bioengineered 2021; 12:4899-4910. [PMID: 34374627 PMCID: PMC8806655 DOI: 10.1080/21655979.2021.1959864] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Stroke is a main cause of disability and death worldwide, and ischemic stroke accounts for most stroke cases. Recently, microRNAs (miRNAs) have been verified to play critical roles in the development of stroke. Herein, we explored effects of miR-152-3p on vascular endothelial cell functions under hypoxia. Human umbilical vein endothelial cells (HUVECs) were treated with hypoxia to mimic cell injury in vitro. Reverse transcription quantitative polymerase chain reaction revealed that miR-152-3p exhibited high expression in HUVECs treated with hypoxia. The inhibition of miR-152-3p reversed hypoxia-induced decrease in cell viability and the increase in angiogenesis, according to the results of cell counting kit-8 assays and tube formation assays. miR-152-3p inhibition reversed the increase in endothelial cell permeability mediated by hypoxia, as shown by endothelial cell permeability in vitro assays. In addition, the increase in protein levels of angiogenetic markers and the decrease in levels of tight junction proteins induced by hypoxia were reversed by miR-152-3p inhibition. Mechanistically, miR-152-3p directly targets 3ʹ-untranslated region of DEAD-box helicase 6 (DDX6), which was confirmed by luciferase reporter assays. DDX6 is lowly expressed in HUVECs under hypoxic condition, and mRNA expression and protein level of DDX6 were upregulated in HUVECs due to miR-152-3p inhibition. Rescue assays showed that DDX6 knockdown reversed effects of miR-152-3p on cell viability, angiogenesis and endothelial permeability. The results demonstrated that miR-152-3p aggravates vascular endothelial cell dysfunction by targeting DDX6 under hypoxia.
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Affiliation(s)
- Zhongyan Zhao
- Department of Neurology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, Hainan, China
| | - Chanji Wu
- Department of Neurology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, Hainan, China
| | - Xiangying He
- Department of Neurology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, Hainan, China
| | - Eryi Zhao
- Department of Neurology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, Hainan, China
| | - Shijun Hu
- Department of Neurology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, Hainan, China
| | - Yeguang Han
- Department of Central Laboratory, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, Hainan, China
| | - Ting Wang
- Department of Neurology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, Hainan, China
| | - Yanquan Chen
- Department of Neurology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, Hainan, China
| | - Tao Liu
- Department of Neurology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, Hainan, China
| | - Shixiong Huang
- Department of Neurology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, Hainan, China
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Ryu CS, Oh SH, Lee KO, Park HS, An HJ, Lee JY, Ko EJ, Park HW, Kim OJ, Kim NK. MiR-10a, 27a, 34b/c, and 300 Polymorphisms are Associated with Ischemic Stroke Susceptibility and Post-Stroke Mortality. Life (Basel) 2020; 10:life10120309. [PMID: 33255549 PMCID: PMC7760023 DOI: 10.3390/life10120309] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/23/2020] [Accepted: 11/23/2020] [Indexed: 12/14/2022] Open
Abstract
A recent study of the ischemic stroke described the roles played by miRNAs in the downregulation of specific cell-cycle gene expression and it is thought to require the development of biomarkers for the prognostic of ischemic stroke. Here, we hypothesized that four miRNA polymorphisms (miR-10a, miR-27a, miR-34b/c, and miR-300) may affect stroke susceptibility and mortality. Blood samples were collected from 530 patients and 403 controls. Genetic polymorphisms were detected by polymerase chain reaction (PCR)-restriction fragment length polymorphism analysis and real-time PCR. We found that the miR-300 rs12894467 TC genotype and the dominant model (AOR: 2.069, p-value: 0.017; AOR: 1.931, p-value: 0.027) were significantly associated with an increased risk for the ischemic stroke subtype. In Cox proportional hazard regression models, the miR-10a rs3809783 A>T and miR-34b/c rs4938723 T>C polymorphisms were associated with the mortality rates among ischemic stroke patients. We found that a miR-300 polymorphism was associated with increased ischemic stroke susceptibility among the Korean population. Additionally, polymorphisms in miR-10a and miR-34b/c were associated with the increased or decreased mortality of ischemic stroke patients. This study marks the first report of an association between ischemic stroke and miRNA polymorphisms (miR-10aA>T, miR-27aT>C, miR-34b/cT>C, and miR-300T>C) in the Korean population.
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Affiliation(s)
- Chang Soo Ryu
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam 13488, Korea; (C.S.R.); (H.S.P.); (H.J.A.); (J.Y.L.); (E.J.K.); (H.W.P.)
| | - Seung Hun Oh
- Department of Neurology, CHA Bundang Medical Center, School of Medicine, CHA University, Seongnam 13496, Korea; (S.H.O.); (K.O.L.)
| | - Kee Ook Lee
- Department of Neurology, CHA Bundang Medical Center, School of Medicine, CHA University, Seongnam 13496, Korea; (S.H.O.); (K.O.L.)
| | - Han Sung Park
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam 13488, Korea; (C.S.R.); (H.S.P.); (H.J.A.); (J.Y.L.); (E.J.K.); (H.W.P.)
| | - Hui Jeong An
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam 13488, Korea; (C.S.R.); (H.S.P.); (H.J.A.); (J.Y.L.); (E.J.K.); (H.W.P.)
| | - Jeong Yong Lee
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam 13488, Korea; (C.S.R.); (H.S.P.); (H.J.A.); (J.Y.L.); (E.J.K.); (H.W.P.)
| | - Eun Ju Ko
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam 13488, Korea; (C.S.R.); (H.S.P.); (H.J.A.); (J.Y.L.); (E.J.K.); (H.W.P.)
| | - Hyeon Woo Park
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam 13488, Korea; (C.S.R.); (H.S.P.); (H.J.A.); (J.Y.L.); (E.J.K.); (H.W.P.)
| | - Ok Joon Kim
- Department of Neurology, CHA Bundang Medical Center, School of Medicine, CHA University, Seongnam 13496, Korea; (S.H.O.); (K.O.L.)
- Correspondence: (O.J.K.); (N.K.K.)
| | - Nam Keun Kim
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam 13488, Korea; (C.S.R.); (H.S.P.); (H.J.A.); (J.Y.L.); (E.J.K.); (H.W.P.)
- Correspondence: (O.J.K.); (N.K.K.)
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Gao N, Tang H, Gao L, Tu GL, Luo H, Xia Y. LncRNA H19 Aggravates Cerebral Ischemia/Reperfusion Injury by Functioning as a ceRNA for miR-19a-3p to Target PTEN. Neuroscience 2020; 437:117-129. [DOI: 10.1016/j.neuroscience.2020.04.020] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 04/13/2020] [Accepted: 04/16/2020] [Indexed: 01/26/2023]
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Lu MY, Wu JR, Liang RB, Wang YP, Zhu YC, Ma ZT, Zhang H, Zan J, Tan W. Upregulation of miR-219a-5p Decreases Cerebral Ischemia/Reperfusion Injury In Vitro by Targeting Pde4d. J Stroke Cerebrovasc Dis 2020; 29:104801. [PMID: 32249206 DOI: 10.1016/j.jstrokecerebrovasdis.2020.104801] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 01/23/2020] [Accepted: 03/02/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Ischemic stroke is the leading cause of disability and death globally. Micro-RNAs (miRNAs) have been reported to play important roles in the development and pathogenesis of the nervous system. However, the exact function and mechanism of miRNAs have not been fully elucidated about brain damage caused by cerebral ischemia/reperfusion (I/R). METHODS In this study, we explored the neuroprotective effects of miR-219a-5p on brain using an in vitro ischemia model (mouse neuroblastoma N2a cells treated with oxyglucose deprivation and reperfusion), and in vivo cerebral I/R model in mice. Western blot assay and Reverse Transcription-Polymerase Chain Reaction were used to check the expression of molecules involved. Flow cytometry and cholecystokinin were used to examine cell apoptosis, respectively. RESULTS Our research shows that miR-219a-5p gradually decreases in cerebral I/R models in vivo and in vitro. In vitro I/R, we find that miR-219a-5p mimics provided evidently protection for cerebral I/R damage, as shown by increased cell viability and decreased the release of LDH and cell apoptosis. Mechanically, our findings indicate that miR-219a-5p binds to cAMP specific 3', 5'-cyclic phosphodiesterase 4D (PDE4D) mRNA in the 3'-UTR region, which subsequently leads to a decrease in Pde4d expression in I/R N2a cells. CONCLUSIONS Our results provide new ideas for the study of the mechanism of cerebral ischemia/reperfusion injury, and lay the foundation for further research on the treatment of brain I/R injury. Upregulation of miR-219a-5p decreases cerebral ischemia/reperfusion injury by targeting Pde4d in vitro.
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Affiliation(s)
- Min-Yi Lu
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China
| | - Jin-Rong Wu
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China
| | - Rui-Bing Liang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China
| | - Yu-Peng Wang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China
| | - You-Cai Zhu
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China
| | - Zi-Ting Ma
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China
| | - Hao Zhang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China
| | - Jie Zan
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China.
| | - Wen Tan
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China.
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Chen H, Shen J, Zhao H. Ischemic postconditioning for stroke treatment: current experimental advances and future directions. CONDITIONING MEDICINE 2020; 3:104-115. [PMID: 34396060 PMCID: PMC8360401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Ischemic postconditioning (IPostC) protects against brain injury induced by stroke and is a potential strategy for ischemic stroke treatment. Understanding its underlying mechanisms and potential hurdles is essential for clinical translation. In this review article, we will summarize the current advances in IPostC for stroke treatment and the underlying protective mechanisms. Strong evidence suggests that IPostC reduces brain infarct size, attenuates blood-brain barrier (BBB) damage and brain edema, and improves neurological outcomes. IPostC also promotes neurogenesis and angiogenesis at the recovery phase of ischemic stroke. The protective mechanisms involve its effects on anti-oxidative stress, anti-inflammation, and anti-apoptosis. In addition, it regulates neurotransmitter receptors, ion channels, heat shock proteins (HSP) 40/70, as well as growth factors such as BDNF and VEGF. Furthermore, IPostC modulates several cell signaling pathways, including the PI3K/Akt, MAPK, NF-κB, and the Gluk2/PSD95/MLK3/MKK7/JNK3 pathways. We also discuss the potential hurdles for IPostC's clinical translation, including insufficient IPostC algorithm studies, such as therapeutic time windows and ischemia-reperfusion periods and cycles, as well as its long-term protection. In addition, future studies should address confounding factors such as age, sex, and pre-existing conditions such as hypertension and hyperglycemia before stroke onset. At last, the combination of IPostC with other treatments, such as tissue plasminogen activator (t-PA), merits further exploration.
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Affiliation(s)
- Hansen Chen
- Department of Neurosurgery, School of Medicine, Stanford University, CA, 94305 USA
| | - Jiangang Shen
- School of Chinese Medicine, The University of Hong Kong, Hong Kong S.A.R, P. R China
| | - Heng Zhao
- Department of Neurosurgery, School of Medicine, Stanford University, CA, 94305 USA
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Bao Y, Li S, Ding Y, Du X, Zhang M, Tang W, Zhou S. MiRNA: a potential target for gene diagnosis and treatment of atherosclerotic stroke. Int J Neurosci 2020; 131:283-288. [PMID: 32129115 DOI: 10.1080/00207454.2020.1738428] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Stroke is one of the major diseases that endanger the physical health life of middle-aged and old people. It has the characteristics of high incidence, mortality and disability rate. Atherosclerosis is the main intervention target for stroke prevention and treatment. MiRNAs are highly expressed in the cerebral vasculature and play an important regulatory role in the pathogenesis of neuronal damage and ischemic stroke. This article reviews the mechanism of action between miRNAs and atherosclerosis, stroke, ischemia-reperfusion injury, collateral circulation and circRNA molecular networks, providing theoretical support for miRNA in gene diagnosis and drug therapy of atherosclerotic stroke.
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Affiliation(s)
- Yi Bao
- Department of Neurology, Hubei University of Medicine, Shiyan City, Hubei Province, China.,Department of Neurology, Taihe Hospital, Hubei University of Medicine, Shiyan City, Hubei Province, China
| | - Sijing Li
- Department of Neurology, Hubei University of Medicine, Shiyan City, Hubei Province, China
| | - Yayong Ding
- Department of Neurology, Hubei University of Medicine, Shiyan City, Hubei Province, China
| | - Xinyu Du
- Department of Neurology, Hubei University of Medicine, Shiyan City, Hubei Province, China
| | - Miao Zhang
- Department of Neurology, Taihe Hospital, Hubei University of Medicine, Shiyan City, Hubei Province, China
| | - Wanjuan Tang
- Department of Neurology, Hubei University of Medicine, Shiyan City, Hubei Province, China
| | - Siqin Zhou
- Department of Neurology, Hubei University of Medicine, Shiyan City, Hubei Province, China
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Xiong L, Zhou H, Zhao Q, Xue L, Al-Hawwas M, He J, Wu M, Zou Y, Yang M, Dai J, He M, Wang T. Overexpression of miR-124 Protects Against Neurological Dysfunction Induced by Neonatal Hypoxic-Ischemic Brain Injury. Cell Mol Neurobiol 2020; 40:737-750. [PMID: 31916069 DOI: 10.1007/s10571-019-00769-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 11/29/2019] [Indexed: 12/20/2022]
Abstract
Neonatal hypoxic-ischemic encephalopathy (HIE) is a major cause of lifelong disabilities worldwide, without effective therapies and clear regulatory mechanisms. MicroRNAs (miRNAs) act as a significant regulator in neuroregeneration and neuronal apoptosis, thus holding great potential as therapeutic targets in HIE. In this study, we established the hypoxia-ischemia (HI) model in vivo and oxygen-glucose deprivation (OGD) model in vitro. Zea-longa score and magnetic resonance imaging were applied to verify HI-induced neuronal dysfunction and brain infarction. Subsequently, a miRNA microarray analysis was employed to profile miRNA transcriptomes. Down-regulated miR-124 was found 24 h after HIE, which corresponded to the change in PC12, SHSY5Y, and neurons after OGD. To determine the function of miR-124, mimics and lentivirus-mediated overexpression were used to regulate miR-124 in vivo and in vitro, respectively. Our results showed that miR-124 overexpression obviously promoted cell survival and suppressed neuronal apoptosis. Further, the memory and neurological function of rats was also obviously improved at 1 and 2 months after HI, indicated by the neurological severity score, Y-maze test, open field test, and rotating rod test. Our findings showed that overexpression of miR-124 can be a promising new strategy for HIE therapy in future clinical practice.
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Affiliation(s)
- Liulin Xiong
- Department of Anesthesiology, The Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, Guizhou, China.,School of Pharmacy and Medical Sciences, Faculty of Health Sciences, University of South Australia, Adelaide, SA, 5000, Australia
| | - Haoli Zhou
- The Clinical Hospital of Chengdu Brain Science Institute, MOE Key Lab for Neuroinformation, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Qiong Zhao
- Department of Anesthesiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, Guangdong, China
| | - Lulu Xue
- The Clinical Hospital of Chengdu Brain Science Institute, MOE Key Lab for Neuroinformation, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Mohammed Al-Hawwas
- School of Pharmacy and Medical Sciences, Faculty of Health Sciences, University of South Australia, Adelaide, SA, 5000, Australia
| | - Jingyuan He
- Institute of Neuroscience, Animal Zoology Department, Kunming Medical University, Kunming, 650031, China
| | - Maxiu Wu
- The Clinical Hospital of Chengdu Brain Science Institute, MOE Key Lab for Neuroinformation, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Yu Zou
- The Clinical Hospital of Chengdu Brain Science Institute, MOE Key Lab for Neuroinformation, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Mingan Yang
- Division of Biostatistics and Epidemiology, School of Public Health, San Diego State University, San Diego, 92182, USA
| | - Jing Dai
- The Clinical Hospital of Chengdu Brain Science Institute, MOE Key Lab for Neuroinformation, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Manxi He
- The Clinical Hospital of Chengdu Brain Science Institute, MOE Key Lab for Neuroinformation, University of Electronic Science and Technology of China, Chengdu, 611731, China.
| | - Tinghua Wang
- Department of Anesthesiology, The Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, Guizhou, China. .,The Clinical Hospital of Chengdu Brain Science Institute, MOE Key Lab for Neuroinformation, University of Electronic Science and Technology of China, Chengdu, 611731, China. .,Institute of Neuroscience, Animal Zoology Department, Kunming Medical University, Kunming, 650031, China.
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12
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Samandari H, Nabavizadeh F, Ashabi G. Age-related difference in protective effect of early post-conditioning on ischemic brain injury: possible involvement of MAP-2/Synaptophysin role. Metab Brain Dis 2019; 34:1771-1780. [PMID: 31471737 DOI: 10.1007/s11011-019-00484-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Accepted: 08/15/2019] [Indexed: 12/16/2022]
Abstract
Brain Ischemia/Reperfusion (I/R) injury leads to the failure of the microtubules function and neuronal death. Ischemic post-conditioning is defined as a series of rapid alternating interruptions of blood flow in the first seconds of reperfusion. In the present study, the caspase-3, Microtubule-Associated Protein-2 (MAP-2), Protein Kinase C α (PKCα), c-fos, and synaptophysin were evaluated in the hippocampus of focal I/R post-conditioning model in a time -dependent study in aged and young rats. Adult and aged rats were subjected to right MCAO for 30 min and post-conditioned (10 s) for 3 cycles. Sensory-motor tests were performed, and locomotion and anxiety-like behavior were evaluated. Molecular tests were done by detection kit, RT-PCR, and Western blotting techniques. Ninety-six hours after I/R post-conditioning, neurological signs, locomotion, anxiety-like behavior, and ischemic area were improved in young rats compared to 6 h after I/R post-conditioning (P < 0.001). Caspase-3 activity declined in the hippocampus and cortex of I/R post-conditioned young rats in 96 h after I/R post-conditioning compared with 6 h after I/R post-conditioning (P < 0.001). Also, MAP-2 mRNA, MAP-2 protein level, PKCα, c-fos and synaptophysin protein levels were enhanced during post-conditioning in young rats in 96 h after I/R post-conditioning compared with 6 h after induction of I/R post-conditioning. The results of the present study suggested that, early post-conditioning might be considered as a candidate for therapeutic methods against I/R in the adult animals not aged rats. Moreover, inhibition of cell death in post-conditioned ischemic rats was found to be regulated by some neuroprotective molecules as well as MAP-2 and c-fos in young rats. Graphical abstract Graphical abstract representing the post-conditioning (PC) treatment timeline in adult and old rats.
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Affiliation(s)
- Hedayat Samandari
- Electrophysiology Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
- Department of Physiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Nabavizadeh
- Department of Physiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Ghorbangol Ashabi
- Department of Physiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
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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: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [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.
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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.
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14
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Forouzanfar F, Shojapour M, Asgharzade S, Amini E. Causes and Consequences of MicroRNA Dysregulation Following Cerebral Ischemia-Reperfusion Injury. CNS & NEUROLOGICAL DISORDERS-DRUG TARGETS 2019; 18:212-221. [DOI: 10.2174/1871527318666190204104629] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 12/31/2018] [Accepted: 01/25/2019] [Indexed: 12/31/2022]
Abstract
Stroke continues to be a major cause of death and disability worldwide. In this respect, the
most important mechanisms underlying stroke pathophysiology are inflammatory pathways, oxidative
stress, as well as apoptosis. Accordingly, miRNAs are considered as non-coding endogenous RNA
molecules interacting with their target mRNAs to inhibit mRNA translation or reduce its transcription.
Studies in this domain have similarly shown that miRNAs are strongly associated with coronary artery
disease and correspondingly contributed to the brain ischemia molecular processes. To retrieve articles
related to the study subject, i.e. the role of miRNAs involved in inflammatory pathways, oxidative
stress, and apoptosis in stroke from the databases of Web of Science, PubMed (NLM), Open Access
Journals, LISTA (EBSCO), and Google Scholar; keywords including cerebral ischemia, microRNA
(miRNA), inflammatory pathway, oxidative stress, along with apoptosis were used. It was consequently
inferred that, miRNAs could be employed as potential biomarkers for diagnosis and prognosis, as
well as therapeutic goals of cerebral ischemia.
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Affiliation(s)
- Fatemeh Forouzanfar
- Medical Toxicology Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mana Shojapour
- Molecular and Medicine Research Center, Arak University of Medical Sciences, Arak, Iran
| | - Samira Asgharzade
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Elham Amini
- UKM Medical Centre [HUKM], Department of Medicine, Faculty of Medicine, Malaysia
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15
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The Impact of Cardiac Lipotoxicity on Cardiac Function and Mirnas Signature in Obese and Non-Obese Rats with Myocardial Infarction. Sci Rep 2019; 9:444. [PMID: 30679580 PMCID: PMC6345821 DOI: 10.1038/s41598-018-36914-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 11/27/2018] [Indexed: 02/08/2023] Open
Abstract
Cardiac lipotoxicity is involved in the cardiac functional consequences associated with obesity. Therefore, the aim of this study was to explore whether changes in the mitochondrial lipid cardiac profile could reflect differences in cardiac function and structure in obese and non-obese rats with myocardial infarction (MI). Whether these changes can also be reflected in a specific plasma miRNA signature as markers of cardiac damage was also evaluated. Rats were fed with either standard (3.5% fat) or high fat diet (35% fat) for 6 weeks before the induction of MI and sacrificed 4 weeks later. MI showed cardiac lipotoxicity independently of the presence of obesity, although obese and non-obese rats did not present the same cardiac lipid profile at mitochondrial level. Several cardiac lipid species in mitochondria, including cardiolipins and triglycerides, were associated with myocardial fibrosis, with mitochondrial triglyceride levels being independently associated with it; this supports that lipotoxicity can affect cardiac function. MI down-regulated plasma levels of miRNA 15b-5p and 194-5p in obese and non-obese animals, which were associated with cardiac function, mitochondrial lipids and myocardial fibrosis, with miRNA 15b-5p levels being independently associated with cardiac fibrosis. This could support that lipotoxicity could affect heart function by modulating plasma miRNAs.
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16
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Tian F, Yuan C, Yue H. MiR-138/SIRT1 axis is implicated in impaired learning and memory abilities of cerebral ischemia/reperfusion injured rats. Exp Cell Res 2018; 367:232-240. [DOI: 10.1016/j.yexcr.2018.03.042] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 03/22/2018] [Accepted: 03/30/2018] [Indexed: 12/25/2022]
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17
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Shang JL, Cheng Q, Duan SJ, Li L, Jia LY. Cognitive improvement following ischemia/reperfusion injury induced by voluntary running‑wheel exercise is associated with LncMALAT1‑mediated apoptosis inhibition. Int J Mol Med 2018; 41:2715-2723. [PMID: 29436629 PMCID: PMC5846661 DOI: 10.3892/ijmm.2018.3484] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 01/19/2018] [Indexed: 01/16/2023] Open
Abstract
Previous human and animal studies demonstrated that voluntary exercise may improve cognitive function and facilitate neuronal plasticity in ischemia/reperfusion (I/R) models. However, the possible underlying mechanisms remain to be elucidated. Metastasis‑associated lung adenocarcinoma transcript 1 (MALAT1), a long noncoding RNA (lncRNA), may be associated with the functions and dysfunctions of endothelial cells. The present study investigated whether spontaneous running‑wheel (RW) exercise‑induced MALAT1 expression changes may be associated with the cognitive improvement of mice following I/R injury. The expression of MALAT1 was evaluated using reverse transcription‑quantitative polymerase chain reaction. Artificial MALAT1 and MALAT1 lentiviral mall interfering (siRNA) were used to alter MALAT1 expression levels in vivo. The Morris Water Maze test was performed to evaluate spatial learning and memory retention in the mice. Changes in the apoptotic rates of hippocampal neurons and levels of apoptosis‑associated proteins were also detected. The data revealed that MALAT1 increased in the hippocampus of mice in the RW‑treated I/R group and that this was associated with neurological, learning and memory improvement, reduced infarction volumes, decreased apoptosis and alterations to expression levels of apoptosis‑associated proteins. Following RW training in I/R‑injured mice, lentiviral MALAT1 siRNA conduction partially attenuated the protections induced by voluntary RW. However, exogenous MALAT1 treatment increased the protection. The current findings suggested that voluntary RW protected hippocampal neurons from I/R injury and promoted cognitive restoration, which was associated with lncRNA MALAT1‑mediated apoptosis inhibition.
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Affiliation(s)
- Jin-Lin Shang
- Neurology Department, Heji Hospital Affiliated to Changzhi Medical College, Changzhi, Shaanxi 046011, P.R. China
| | - Qing Cheng
- Geriatrics Department, Changzhi People Hospital, Changzhi, Shaanxi 046011, P.R. China
| | - Sheng-Jie Duan
- Neurology Department, Heji Hospital Affiliated to Changzhi Medical College, Changzhi, Shaanxi 046011, P.R. China
| | - Lu Li
- Neurology Department, Heji Hospital Affiliated to Changzhi Medical College, Changzhi, Shaanxi 046011, P.R. China
| | - Li-Ya Jia
- Neurology Department, Heji Hospital Affiliated to Changzhi Medical College, Changzhi, Shaanxi 046011, P.R. China
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