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Liu X, Chen J, Liu G, Zhang B, Jin X, Wang Y. MicroRNA-17-5p, a novel endothelial cell modulator, controls vascular re-endothelialization and neointimal lesion formation. Vascular 2023; 31:392-401. [PMID: 34958294 DOI: 10.1177/17085381211067672] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND The functions of miR-17-5p in tumorigenesis have been explored. However, their functionalities in arterial endothelial cells (ECs) have not been investigated. Besides, the issue of vascular remodelling is barely addressed. OBJECTIVES The study aimed to determine the effect of overexpression or inhibition of miR-17-5p on arterial endothelial cells' (ECs) function and vascular remodelling in vitro and the rat carotid arteries model. METHODS Quantitative RT-PCR analysis was performed to examine the expression of miR-17-5p. Then, gain-of-function and loss-of-function approaches were employed to investigate the functional roles of miR-17-5p in cultured human coronary artery endothelial cells (HCAECs); further, TargetScan software analysis and luciferase reporter activity assay were performed to investigate the potential mechanism. Lastly, the results of the cell segment were verified in a rat carotid artery balloon injury model by Western blot analysis, measurement of the vascular cGMP level and plasma 8-iso-prostaglandin F2 (8-iso-PGF2) testing. Moreover, morphometric analysis was implemented to detect the re-endothelialization and neointimal formation in rat carotid artery after balloon injury. RESULTS This study firstly found that miR-17-5p expression was upregulated in the injured vascular walls and highly expressive in ECs; overexpression of miR-17-5p inhibited HCAECs' proliferation and migration, whereas miR-17-5p knockdown strengthened its proliferative and migratory roles, influenced inflammatory response, through regulating VEGRA and VEGFR2. It was found that miR-17-5p bind to VEGFA and VEGFR2 at the 3'UTR. Next, downregulation of miR-17-5p promotes re-endothelialization, and attenuates neointimal formation as measured by the I/M ratio (0.63±0.05 vs 1.45±0.06, antagomiR-17-5p vs. Lenti-NC, p < 0.05). In addition, the functional recovery of the endothelium was also accelerated by miR-17-5p knockdown. CONCLUSION Our study suggests that miR-17-5p is a feasible strategy for the selective modulation of endothelialization and vascular remodelling through regulating VEGFA and VEGFR2.
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Affiliation(s)
- Xiaopei Liu
- Department of Cardiology, Cardiovascular Research Institute, Hubei Key Laboratory of Cardiology, 117921Renmin Hospital of Wuhan University, Wuhan, China
| | - Jing Chen
- Department of Cardiology, Cardiovascular Research Institute, Hubei Key Laboratory of Cardiology, 117921Renmin Hospital of Wuhan University, Wuhan, China
| | - Gen Liu
- Department of Cardiology, Cardiovascular Research Institute, Hubei Key Laboratory of Cardiology, 117921Renmin Hospital of Wuhan University, Wuhan, China
| | - Bofang Zhang
- Department of Cardiology, Cardiovascular Research Institute, Hubei Key Laboratory of Cardiology, 117921Renmin Hospital of Wuhan University, Wuhan, China
| | - Xing Jin
- Department of Cardiology, Cardiovascular Research Institute, Hubei Key Laboratory of Cardiology, 117921Renmin Hospital of Wuhan University, Wuhan, China
| | - Yun Wang
- Department of Cardiology, Cardiovascular Research Institute, Hubei Key Laboratory of Cardiology, 117921Renmin Hospital of Wuhan University, Wuhan, China
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Yi CA, Jiang YH, Wang Y, Li YX, Cai SC, Wu XY, Hu XS, Wan XG. Black Bamboo Rhizome Extract Improves Cognitive Dysfunction by Upregulating the Expression of Hippocampal BDNF and CREB in Rats with Cerebral Ischaemia-Reperfusion Injury. Neuropsychiatr Dis Treat 2021; 17:2257-2267. [PMID: 34285486 PMCID: PMC8286084 DOI: 10.2147/ndt.s314162] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 06/25/2021] [Indexed: 11/23/2022] Open
Abstract
INTRODUCTION The study aimed to explore the effects of treatment with black bamboo rhizome extracts on learning and memory and determine the underlying mechanisms in rats with cerebral ischaemia-reperfusion injury. METHODS Sprague-Dawley rats were randomly divided into the following four groups: control, middle cerebral artery occlusion (MCAO), low-dose drug, and high-dose drug groups. Rats underwent MCAO using a suture method before drug treatment. Then, neurological impairment was assessed using the Longa scoring method, and triphenyl tetrazolium chloride staining was used to analyse the cerebral infarction area. The Elliott formula was used to calculate water content in the brain tissue. A Morris water maze (MWM) was used to assess changes in learning and memory abilities, and Western blotting was used to detect cyclic adenosine phosphate response element-binding protein (CREB) and brain-derived neurotrophic factor (BDNF) expression in the hippocampus of MCAO rats. RESULTS After treatment with black bamboo rhizome extracts, the neurological dysfunction score was lower in the drug groups than in the MCAO group, and a significant difference was observed between the high-dose drug and MCAO groups (P<0.05). Additionally, the cerebral infarction area was significantly smaller in the drug groups than in the MCAO group (P<0.01), and the effect was more obvious in the high-dose drug group than in the low-dose drug group. There was also a significant difference in water content between the high-dose drug and MCAO groups, and cerebral oedema was significantly reduced in the high-dose drug group (P<0.05). In the MWM, the incubation period was significantly reduced, the number of platform crossings was significantly increased, and the search time was prolonged in the drug groups compared with those in the MCAO group (P<0.05). Moreover, the expression of BDNF and CREB was significantly increased in the drug groups compared to that in the MCAO group, and the increase was more obvious in the high-dose group than in the low-dose group (P<0.05). DISCUSSION Black bamboo rhizome extracts significantly improved cognitive dysfunction, reduced cerebral oedema, decreased the cerebral infarction area, and improved the neurological function score and learning and memory abilities in rats with cerebral ischaemia-reperfusion injury.
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Affiliation(s)
- Chuan-An Yi
- Medical Morphology Experimental Center, Hunan University of Medicine, Hunan, People's Republic of China
| | - Yu-Hong Jiang
- Medical Morphology Experimental Center, Hunan University of Medicine, Hunan, People's Republic of China
| | - Ye Wang
- Key Laboratory of Dong Medical Research Hunan Province, Hunan, People's Republic of China
| | - Yu-Xian Li
- Department of Neurology, Hunan University of Medicine, Hunan, People's Republic of China
| | - Shi-Chang Cai
- Department of Anatomy, Hunan University of Medicine, Hunan, People's Republic of China
| | - Xiu-Yu Wu
- Department of Anatomy, Hunan University of Medicine, Hunan, People's Republic of China
| | - Xiang-Shang Hu
- Department of Anatomy, Hunan University of Medicine, Hunan, People's Republic of China
| | - Xing-Guang Wan
- Department of Anatomy, Hunan University of Medicine, Hunan, People's Republic of China
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Zhang J, Yang J, Xu C, Hu Q, Hu J, Chen J, Jiang H. Down-regulation of Suv39h1 attenuates neointima formation after carotid artery injury in diabetic rats. J Cell Mol Med 2019; 24:973-983. [PMID: 31736204 PMCID: PMC6933362 DOI: 10.1111/jcmm.14809] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 08/20/2019] [Accepted: 09/12/2019] [Indexed: 12/22/2022] Open
Abstract
Patients with diabetes have an increased risk of vascular complications. Suv39h1, a histone methyltransferase, plays a protective role against myocardial injury in diabetes. Herein, we intend to explore whether Suv39h1 could affect neointimal formation after vascular injury in diabetic rats and reveal the underlying mechanism. In this study, we generated adenovirus expressing Suv39h1 as well as lentivirus expressing Suv39h1‐targeting shRNA and evaluated the significance of Suv39h1 in vascular smooth muscle cells (VSMCs) under diabetic conditions. In vitro, we examined proliferative and migratory behaviours as well as the underlying signalling mechanisms in VSMCs in response to high glucose treatment. In vivo, we induced diabetes in SD rats with streptozocin and established the common carotid artery balloon injury model. Suv39h1 was found to be both necessary and sufficient to promote VSMC proliferation and migration under high glucose conditions. We observed corresponding changes in intracellular signalling molecules including complement C3 and phosphor‐ERK1/2. However, either up‐regulating or down‐regulating Suv39h1, phosphor‐p38 level was not significantly affected. Consistently, Suv39h1 overexpression led to accelerated neointima formation, while knocking down Suv39h1 reduced it following carotid artery injury in diabetic rats. Using microarray analyses, we showed that altering the Suv39h1 level in vivo dramatically altered the expression of myriad genes mediating different biological processes and molecular function. This study reveals the novel role of Suv39h1 in VSMCs of diabetes and suggests its potential role as a therapeutic target in diabetic vascular injury.
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Affiliation(s)
- Jing Zhang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Department of Cardiology, The First College of Clinical Medical Science, China Three Gorges University & Yichang Central People's Hospital, Yichang, China
| | - Jian Yang
- Department of Cardiology, The First College of Clinical Medical Science, China Three Gorges University & Yichang Central People's Hospital, Yichang, China
| | - Changwu Xu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Qi Hu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Jun Hu
- Central Laboratory, The First College of Clinical Medical Science, China Three Gorges University & Yichang Central People's Hospital, Yichang, China
| | - Jing Chen
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Hong Jiang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
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MTUS1 silencing promotes E-selectin production through p38 MAPK-dependent CREB ubiquitination in endothelial cells. J Mol Cell Cardiol 2016; 101:1-10. [PMID: 27789289 DOI: 10.1016/j.yjmcc.2016.10.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 10/21/2016] [Accepted: 10/22/2016] [Indexed: 12/14/2022]
Abstract
BACKGROUND Endothelial cell activation is thought to be a key event in atherosclerosis. p38 mitogen-activated protein kinase (p38 MAPK) plays an important role in regulating pro-inflammatory cytokine production in endothelial cells (ECs), however, how p38 MAPK is controlled in EC activation remain unclear. In this study, we investigated the effect of mitochondrial tumor suppressor 1 (MTUS1) on p38 MAPK activation, cytokine induction and the underlying molecular mechanisms in ECs. METHODS AND RESULTS Using qPCR and ELISA methods, we found that knockdown of MTUS1 led to a marked increase in the mRNA and protein expression of E-selectin (SELE) and monocyte chemotactic protein-1 in ECs, which is accompanied with increased phosphorylation of p38 MAPK (Thr180/Tyr182), MKK3/6 (Ser 189) and IκBα (Ser 32). Using luciferase reporter assay, we found that MTUS1 silencing also activated NF-κB transcriptional activity. The inhibition of p38 MAPK and NF-κB pathway was shown to abrogate MTUS1 silencing-induced cytokine expression in ECs. Furthermore, MTUS1 silencing induced p38 MAPK-dependent ubiquitination of cAMP-response element binding protein (CREB) which potentiated CREB-binding protein-mediated NF-κB p65 acetylation and binding to the promoter of the SELE gene. Conversely, adenovirus-mediated overexpression of MTUS1 inhibited p38 MAPK activation in ECs in vitro and in vivo. Importantly, decreased expression of MTUS1 and CREB, accompanied with induced activation of p38 MAPK were observed in aortas of apoE-/- mice after high-fat diet challenge. CONCLUSIONS Our findings showed that MTUS1 regulates the p38 MAPK-mediated cytokine production in ECs. MTUS1 gene probably plays a protective role against pro-inflammatory response of ECs.
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Chien PTY, Lin CC, Hsiao LD, Yang CM. c-Src/Pyk2/EGFR/PI3K/Akt/CREB-activated pathway contributes to human cardiomyocyte hypertrophy: Role of COX-2 induction. Mol Cell Endocrinol 2015; 409:59-72. [PMID: 25869400 DOI: 10.1016/j.mce.2015.04.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 03/23/2015] [Accepted: 04/07/2015] [Indexed: 12/27/2022]
Abstract
Thrombin and COX-2 regulating cardiac hypertrophy are via various signaling cascades. Several transcriptional factors including CREB involve in COX-2 expression. However, the interplay among thrombin, CREB, and COX-2 in primary human neonatal ventricular cardiomyocytes remains unclear. In this study, thrombin-induced COX-2 promoter activity, mRNA and protein expression, and PGE2 synthesis were attenuated by pretreatment with the inhibitors of c-Src (PP1), Pyk2 (PF431396), EGFR (AG1478), PI3K/Akt (LY294002/SH-5), and p300 (GR343), or transfection with siRNAs of c-Src, Pyk2, EGFR, p110, Akt, CREB, and p300. Moreover, thrombin-stimulated phosphorylation of c-Src, Pyk2, EGFR, Akt, CREB and p300 was attenuated by their respective inhibitors. These results indicate that thrombin-induced COX-2 expression is mediated through PAR-1/c-Src/Pyk2/EGFR/PI3K/Akt linking to CREB and p300 cascades. Functionally, thrombin-induced hypertrophy and ANF/BNP release were, at least in part, mediated through a PAR-1/COX-2-dependent pathway. We uncover the importance of COX-2 regarding human cardiomyocyte hypertrophy that will provide a therapeutic intervention in cardiovascular diseases.
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Affiliation(s)
- Peter Tzu-Yu Chien
- Graduate Institute of Biomedical Sciences, Health Ageing Research Center, College of Medicine, Chang Gung University, Kwei-San, Tao-Yuan, Taiwan; Department of Physiology and Pharmacology, Health Ageing Research Center, College of Medicine, Chang Gung University, Kwei-San, Tao-Yuan, Taiwan
| | - Chih-Chung Lin
- Department of Anesthetics, Chang Gung Memorial Hospital at Lin-Kou and College of Medicine, Chang Gung University, Kwei-San, Tao-Yuan, Taiwan
| | - Li-Der Hsiao
- Department of Anesthetics, Chang Gung Memorial Hospital at Lin-Kou and College of Medicine, Chang Gung University, Kwei-San, Tao-Yuan, Taiwan
| | - Chuen-Mao Yang
- Graduate Institute of Biomedical Sciences, Health Ageing Research Center, College of Medicine, Chang Gung University, Kwei-San, Tao-Yuan, Taiwan; Department of Physiology and Pharmacology, Health Ageing Research Center, College of Medicine, Chang Gung University, Kwei-San, Tao-Yuan, Taiwan.
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Chen J, Xu L, Huang C. DHEA inhibits vascular remodeling following arterial injury: a possible role in suppression of inflammation and oxidative stress derived from vascular smooth muscle cells. Mol Cell Biochem 2013; 388:75-84. [PMID: 24287563 DOI: 10.1007/s11010-013-1900-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Accepted: 11/15/2013] [Indexed: 12/01/2022]
Abstract
Vascular remodeling is characterized by the aggregation of vascular smooth muscle cells (VSMCs) in intima. Previous studies have demonstrated that dehydroepiandrosterone (DHEA), a steroid hormone, can reverse vascular remodeling. However, it is still far clear that whether and how DHEA participates in the modulation of VSMCs activation and vascular remodeling. VSMCs were obtained from the thoracic aorta of SD rats. Cell proliferation was evaluated by CCK-8 assay and BrdU assay. To measure VSMCs migration activity, a transwell chamber assay was performed. Quantitative real-time RT-PCR and western blot were used to explore the molecular mechanisms. ROS generation by VSMCs was measured by DCF fluorescence. NADPH oxidase activity and SOD activity were measured by the corresponding kits. NF-κB activity was detected by NF-κB luciferase reporter gene assay. A rat carotid artery balloon injury model was built to evaluate the neointimal formation, and plasma PGF2 was measured by ELISA. Our results showed that DHEA significantly inhibited VSMCs proliferation after angiotensin (Ang II) stimulation by down-regulation of NADPH oxidase activity and ERK1/2 phosphorylation. Ang II can increase IL-6 and MCP-1 expression, but DHEA reverses these changes via inhibiting p38-MAPK/NF-κB (p65) signaling pathway. DHEA has no significant effects on VSMCs phenotype transition, but can reduce the neointimal to media area ratio after balloon injury. DHEA can alleviate oxidative stress and inflammation in VSMCs via ERK1/2 and NF-κB signaling pathway, but has no effect on VSMCs phenotype transition. Furthermore, DHEA attenuates VSMCs activation and neointimal formation after carotid injury in vivo. Taken together, DHEA might be a promising treatment for vascular injury under pathological condition.
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Affiliation(s)
- Jiangbin Chen
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, People's Republic of China
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Zhang S, Liu X, Goldstein S, Li Y, Ge J, He B, Fei X, Wang Z, Ruiz G. Role of the JAK/STAT signaling pathway in the pathogenesis of acute myocardial infarction in rats and its effect on NF-κB expression. Mol Med Rep 2012; 7:93-8. [PMID: 23128561 DOI: 10.3892/mmr.2012.1159] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2012] [Accepted: 10/16/2012] [Indexed: 11/06/2022] Open
Abstract
The Janus kinase/signal transducer and activator of transcription pathway (JAK/STAT signaling pathway) is involved in the development of numerous cardiovascular diseases, although the specific role of this pathway in the pathogenesis of acute myocardial infarction (AMI) has not been elucidated. The purpose of this study was to evaluate the role of the JAK/STAT signaling pathway in the onset of AMI in rats. We also tested the effect of this pathway on nuclear factor κB (NF-κB) expression in the myocardium and tumor necrosis factor-α (TNF-α) levels in the plasma of AMI rats. An AMI rat model was successfully established and AG490 was used to block the JAK/STAT signaling pathway. The plasma TNF-α levels of AMI rats were measured by ELISA. The protein expression of NF-κB in the myocardial cells of AMI rats was detected by immunohistochemistry. The infarction area was significantly smaller in rats treated with AG490 after coronary artery ligation (group C) compared with that in the myocardial infarction control group (group B). The left ventricular mass indices in the sham surgery group (group A) and group C were significantly lower compared with those of group B. Plasma TNF-α concentrations in group B were significantly higher compared with those of groups A and C. There were significantly fewer cardiomyocytes positively exhibiting NF-κB protein expression in groups A and C compared with group B. The JAK/STAT signaling pathway is involved in the onset of myocardial infarction and may also be involved in left ventricular remodeling after myocardial infarction. The involvement of the JAK/STAT signaling pathway in the onset of myocardial infarction may be correlated with its effects on the expression of NF-κB and TNF-α.
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Affiliation(s)
- Song Zhang
- Department of Cardiovascular Diseases, Xinhua Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai 200092, PR China.
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