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Morales‐Roselló J, Loscalzo G, García‐Lopez EM, García‐Gimenez JL, Perales‐Marín A. MicroRNA‐132 is overexpressed in fetuses with late‐onset fetal growth restriction. Health Sci Rep 2022; 5:e558. [PMID: 35317418 PMCID: PMC8922531 DOI: 10.1002/hsr2.558] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 12/25/2021] [Accepted: 02/11/2022] [Indexed: 11/17/2022] Open
Abstract
Background and Aims To evaluate the expression of microRNA 132 (miR‐132) in fetuses with normal growth and in fetuses with late‐onset growth restriction (FGR). Methods In a prospective cohort study, 48 fetuses (24 with late‐onset FGR and 24 with normal growth) were scanned with Doppler ultrasound after 34 weeks to measure the umbilical artery and middle cerebral artery pulsatility indices and followed until birth. Subsequently, blood samples from the umbilical cord were collected to evaluate the expression of miR‐132 by means of Real‐time quantitative polymerase chain reaction, determining the existence of normality cut‐offs and associations with birth weight (BW) centile, cerebroplacental ratio multiples of the median (CPR MoM), and intrapartum fetal compromise (IFC). Results In comparison with normal fetuses, late‐onset FGR fetuses showed upregulation of miR‐132 (33.94 ± 45.04 vs. 2.88 ± 9.32 2−ddCt, p < 0.001). Using 5 as a cut‐off we obtained a sensitivity of 50% and a specificity of 96% for the diagnosis of FGR, while for IFC these values were respectively 27% and 73%. Expression of miR‐132 was associated with BW centile but not with CPR MoM. Finally, the best detection of IFC was achieved combining miR‐132 expression and CPR MoM (AUC = 0.69, p < 0.05). Conclusion Fetuses with late‐onset FGR show upregulation of miR‐132. Further studies are needed to investigate the role of miR‐132 in the management of late‐onset FGR.
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Affiliation(s)
- José Morales‐Roselló
- Servicio de Obstetricia y Ginecología Hospital Universitario y Politécnico La Fe Valencia Spain
- Departamento de Pediatría, Obstetricia y Ginecología Universidad de Valencia Valencia Spain
| | - Gabriela Loscalzo
- Servicio de Obstetricia y Ginecología Hospital Universitario y Politécnico La Fe Valencia Spain
| | - Eva María García‐Lopez
- EpiDisease SL, and Consortium Center for Biomedical Network Research on Rare Diseases (CIBERER) Institute of Health Carlos III Valencia Spain
| | - José Luis García‐Gimenez
- EpiDisease SL, and Consortium Center for Biomedical Network Research on Rare Diseases (CIBERER) Institute of Health Carlos III Valencia Spain
- Departamento de Fisiología Universidad de Valencia Valencia Spain
| | - Alfredo Perales‐Marín
- Servicio de Obstetricia y Ginecología Hospital Universitario y Politécnico La Fe Valencia Spain
- Departamento de Pediatría, Obstetricia y Ginecología Universidad de Valencia Valencia Spain
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2
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Keasey MP, Razskazovskiy V, Jia C, Peterknecht ED, Bradshaw PC, Hagg T. PDIA3 inhibits mitochondrial respiratory function in brain endothelial cells and C. elegans through STAT3 signaling and decreases survival after OGD. Cell Commun Signal 2021; 19:119. [PMID: 34922569 PMCID: PMC8684072 DOI: 10.1186/s12964-021-00794-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 10/14/2021] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Protein disulfide isomerase A3 (PDIA3, also named GRP58, ER-60, ERp57) is conserved across species and mediates protein folding in the endoplasmic reticulum. PDIA3 is, reportedly, a chaperone for STAT3. However, the role of PDIA3 in regulating mitochondrial bioenergetics and STAT3 phosphorylation at serine 727 (S727) has not been described. METHODS Mitochondrial respiration was compared in immortalized human cerebral microvascular cells (CMEC) wild type or null for PDIA3 and in whole organism C. Elegans WT or null for pdi-3 (worm homologue). Mitochondrial morphology and cell signaling pathways in PDIA3-/- and WT cells were assessed. PDIA3-/- cells were subjected to oxygen-glucose deprivation (OGD) to determine the effects of PDIA3 on cell survival after injury. RESULTS We show that PDIA3 gene deletion using CRISPR-Cas9 in cultured CMECs leads to an increase in mitochondrial bioenergetic function. In C. elegans, gene deletion or RNAi knockdown of pdi-3 also increased respiratory rates, confirming a conserved role for this gene in regulating mitochondrial bioenergetics. The PDIA3-/- bioenergetic phenotype was reversed by overexpression of WT PDIA3 in cultured PDIA3-/- CMECs. PDIA3-/- and siRNA knockdown caused an increase in phosphorylation of the S727 residue of STAT3, which is known to promote mitochondrial bioenergetic function. Increased respiration in PDIA3-/- CMECs was reversed by a STAT3 inhibitor. In PDIA3-/- CMECs, mitochondrial membrane potential and reactive oxygen species production, but not mitochondrial mass, was increased, suggesting an increased mitochondrial bioenergetic capacity. Finally, PDIA3-/- CMECs were more resistant to oxygen-glucose deprivation, while STAT3 inhibition reduced the protective effect. CONCLUSIONS We have discovered a novel role for PDIA3 in suppressing mitochondrial bioenergetic function by inhibiting STAT3 S727 phosphorylation.
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Affiliation(s)
- Matt. P. Keasey
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, PO Box 70582, Johnson City, TN 37614 USA
| | - V. Razskazovskiy
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, PO Box 70582, Johnson City, TN 37614 USA
| | - C. Jia
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, PO Box 70582, Johnson City, TN 37614 USA
- Sandwell and West, Birmingham Hospitals NHS Trust, Birmingham, UK
| | | | - P. C. Bradshaw
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, PO Box 70582, Johnson City, TN 37614 USA
| | - T. Hagg
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, PO Box 70582, Johnson City, TN 37614 USA
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Bormann D, Stojanovic T, Cicvaric A, Schuld GJ, Cabatic M, Ankersmit HJ, Monje FJ. miRNA-132/212 Gene-Deletion Aggravates the Effect of Oxygen-Glucose Deprivation on Synaptic Functions in the Female Mouse Hippocampus. Cells 2021; 10:1709. [PMID: 34359879 PMCID: PMC8306255 DOI: 10.3390/cells10071709] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/01/2021] [Accepted: 07/02/2021] [Indexed: 12/29/2022] Open
Abstract
Cerebral ischemia and its sequelae, which include memory impairment, constitute a leading cause of disability worldwide. Micro-RNAs (miRNA) are evolutionarily conserved short-length/noncoding RNA molecules recently implicated in adaptive/maladaptive neuronal responses to ischemia. Previous research independently implicated the miRNA-132/212 cluster in cholinergic signaling and synaptic transmission, and in adaptive/protective mechanisms of neuronal responses to hypoxia. However, the putative role of miRNA-132/212 in the response of synaptic transmission to ischemia remained unexplored. Using hippocampal slices from female miRNA-132/212 double-knockout mice in an established electrophysiological model of ischemia, we here describe that miRNA-132/212 gene-deletion aggravated the deleterious effect of repeated oxygen-glucose deprivation insults on synaptic transmission in the dentate gyrus, a brain region crucial for learning and memory functions. We also examined the effect of miRNA-132/212 gene-deletion on the expression of key mediators in cholinergic signaling that are implicated in both adaptive responses to ischemia and hippocampal neural signaling. miRNA-132/212 gene-deletion significantly altered hippocampal AChE and mAChR-M1, but not α7-nAChR or MeCP2 expression. The effects of miRNA-132/212 gene-deletion on hippocampal synaptic transmission and levels of cholinergic-signaling elements suggest the existence of a miRNA-132/212-dependent adaptive mechanism safeguarding the functional integrity of synaptic functions in the acute phase of cerebral ischemia.
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Affiliation(s)
- Daniel Bormann
- Center for Physiology and Pharmacology, Department of Neurophysiology and Neuropharmacology, Medical University of Vienna, Schwarzspanierstraße 17, 1090 Vienna, Austria; (D.B.); (T.S.); (G.J.S.); (M.C.)
- Laboratory for Cardiac and Thoracic Diagnosis, Department of Surgery, Regeneration and Applied Immunology, Medical University of Vienna, Research Laboratories Vienna General Hospital, Waehringer Guertel 18-20, 1090 Vienna, Austria;
- Division of Thoracic Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Tamara Stojanovic
- Center for Physiology and Pharmacology, Department of Neurophysiology and Neuropharmacology, Medical University of Vienna, Schwarzspanierstraße 17, 1090 Vienna, Austria; (D.B.); (T.S.); (G.J.S.); (M.C.)
| | - Ana Cicvaric
- Department of Psychiatry and Behavioral Sciences, Albert Einstein College of Medicine, New York, NY 10461, USA;
| | - Gabor J. Schuld
- Center for Physiology and Pharmacology, Department of Neurophysiology and Neuropharmacology, Medical University of Vienna, Schwarzspanierstraße 17, 1090 Vienna, Austria; (D.B.); (T.S.); (G.J.S.); (M.C.)
| | - Maureen Cabatic
- Center for Physiology and Pharmacology, Department of Neurophysiology and Neuropharmacology, Medical University of Vienna, Schwarzspanierstraße 17, 1090 Vienna, Austria; (D.B.); (T.S.); (G.J.S.); (M.C.)
| | - Hendrik Jan Ankersmit
- Laboratory for Cardiac and Thoracic Diagnosis, Department of Surgery, Regeneration and Applied Immunology, Medical University of Vienna, Research Laboratories Vienna General Hospital, Waehringer Guertel 18-20, 1090 Vienna, Austria;
- Division of Thoracic Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
- Aposcience AG, Dresdner Straße 87/A 21, 1200 Vienna, Austria
| | - Francisco J. Monje
- Center for Physiology and Pharmacology, Department of Neurophysiology and Neuropharmacology, Medical University of Vienna, Schwarzspanierstraße 17, 1090 Vienna, Austria; (D.B.); (T.S.); (G.J.S.); (M.C.)
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Ergen FB, Cosan DT, Kandemir T, Dag İ, Mutlu F, Cosan TE. An Enriched Environment Leads to Increased Synaptic Plasticity-Associated miRNA Levels after Experimental Subarachnoid Hemorrhage. J Stroke Cerebrovasc Dis 2021; 30:105766. [PMID: 33866227 DOI: 10.1016/j.jstrokecerebrovasdis.2021.105766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 02/26/2021] [Accepted: 03/17/2021] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND AND PURPOSE In subarachnoid hemorrhage (SAH), impairments in motor and cognitive functions may occur and continue in later periods. MicroRNAs (miRNAs) are small non-coding RNAs that can directly or indirectly affect synaptic reconstruction. mir-132, mir-134, and mir-138 are the leading miRNAs that can be effective on some neurological functions through its effects on synaptic plasticity in the relevant brain areas. In our study, it was aimed to determine the levels of miRNAs in the hippocampus and frontal lobe of rats exposed to different environmental conditions after the experimental SAH. METHODS SAH was created using the cisterna magna double blood-injection method. Brain tissues were collected at different times after the last blood injection. Rats were grouped according to the different environmental conditions in which they were kept. Expression levels of miRNAs were performed by qPCR and ultrastructural changes in samples were determined by transmission electron microscopy (TEM). RESULTS After SAH, miR-132, miR-134, and miR-138 expressions in the frontal lobes of rats increased in impoverished environment on the 7th day and in the enriched environment on the 14th day. It was observed that the myelin and microtubule structures in the axons that were disrupted after SAH were more organized and stable in the enriched environment. CONCLUSIONS After SAH, different environmental conditions may affect the miRNA levels associated with synaptic plasticity and microtubule organization in the frontal lobe, and this might have some effects especially on cognitive and motor functions related to this brain area.
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Affiliation(s)
- Fulya Buge Ergen
- Department of Interdisciplinary Neuroscience, Health Science Institute, Eskisehir Osmangazi University, Eskisehir, Turkey.
| | - Didem Turgut Cosan
- Department of Interdisciplinary Neuroscience, Health Science Institute, Eskisehir Osmangazi University, Eskisehir, Turkey; Department of Medical Biology, Faculty of Medicine, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Turan Kandemir
- Department of Neurosurgery, Faculty of Medicine, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - İlknur Dag
- Central Research Laboratory Application and Research Center, Eskisehir Osmangazi University, Eskisehir, Turkey; Vocational Health Services High School, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Fezan Mutlu
- Department of Biostatistics, Faculty of Medicine, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Tevfik Erhan Cosan
- Department of Interdisciplinary Neuroscience, Health Science Institute, Eskisehir Osmangazi University, Eskisehir, Turkey; Department of Neurosurgery, Faculty of Medicine, Eskisehir Osmangazi University, Eskisehir, Turkey
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Yang J, Cao LL, Wang XP, Guo W, Guo RB, Sun YQ, Xue TF, Cai ZY, Ji J, Cheng H, Sun XL. Neuronal extracellular vesicle derived miR-98 prevents salvageable neurons from microglial phagocytosis in acute ischemic stroke. Cell Death Dis 2021; 12:23. [PMID: 33414461 PMCID: PMC7791117 DOI: 10.1038/s41419-020-03310-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 12/01/2020] [Accepted: 12/03/2020] [Indexed: 12/21/2022]
Abstract
Extracellular vesicles (EVs), as a novel intercellular communication carrier transferring cargo microRNAs (miRNAs), could play important roles in the brain remodeling process after ischemic stroke. However, the detailed mechanisms involved in EVs derived miRNAs-mediated cellular interactions in the brain remain unclear. Several studies indicated that microRNA-98 (miR-98) might participate in the pathogenesis of ischemic stroke. Here, we showed that expression of miR-98 in penumbra field kept up on the first day but dropped sharply on the 3rd day after ischemic stroke in rats, indicating that miR-98 could function as an endogenous protective factor post-ischemia. Overexpression of miR-98 targeted inhibiting platelet activating factor receptor-mediated microglial phagocytosis to attenuate neuronal death. Furthermore, we showed that neurons transferred miR-98 to microglia via EVs secretion after ischemic stroke, to prevent the stress-but-viable neurons from microglial phagocytosis. Therefore, we reveal that EVs derived miR-98 act as an intercellular signal mediating neurons and microglia communication during the brain remodeling after ischemic stroke. The present work provides a novel insight into the roles of EVs in the stroke pathogenesis and a new EVs-miRNAs-based therapeutic strategy for stroke.
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Affiliation(s)
- Jin Yang
- Department of Pharmacology, Neuroprotective Drug Discovery Key Laboratory, Jiangsu Key Laboratory of Neurodegeneration, Center for Global Health, Nanjing Medical University, Nanjing, China
| | - Lu-Lu Cao
- Department of Pharmacology, Neuroprotective Drug Discovery Key Laboratory, Jiangsu Key Laboratory of Neurodegeneration, Center for Global Health, Nanjing Medical University, Nanjing, China
- Zhongda Hospital, Southeast University, Nanjing, China
| | - Xi-Peng Wang
- Department of Pharmacology, Neuroprotective Drug Discovery Key Laboratory, Jiangsu Key Laboratory of Neurodegeneration, Center for Global Health, Nanjing Medical University, Nanjing, China
| | - Wei Guo
- Department of Pharmacology, Neuroprotective Drug Discovery Key Laboratory, Jiangsu Key Laboratory of Neurodegeneration, Center for Global Health, Nanjing Medical University, Nanjing, China
| | - Ruo-Bing Guo
- Department of Pharmacology, Neuroprotective Drug Discovery Key Laboratory, Jiangsu Key Laboratory of Neurodegeneration, Center for Global Health, Nanjing Medical University, Nanjing, China
| | - Yu-Qin Sun
- Department of Pharmacology, Neuroprotective Drug Discovery Key Laboratory, Jiangsu Key Laboratory of Neurodegeneration, Center for Global Health, Nanjing Medical University, Nanjing, China
| | - Teng-Fei Xue
- Department of Pharmacology, Neuroprotective Drug Discovery Key Laboratory, Jiangsu Key Laboratory of Neurodegeneration, Center for Global Health, Nanjing Medical University, Nanjing, China
| | - Zhen-Yu Cai
- Department of Pharmacology, Neuroprotective Drug Discovery Key Laboratory, Jiangsu Key Laboratory of Neurodegeneration, Center for Global Health, Nanjing Medical University, Nanjing, China
| | - Juan Ji
- Department of Pharmacology, Neuroprotective Drug Discovery Key Laboratory, Jiangsu Key Laboratory of Neurodegeneration, Center for Global Health, Nanjing Medical University, Nanjing, China
| | - Hong Cheng
- The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xiu-Lan Sun
- Department of Pharmacology, Neuroprotective Drug Discovery Key Laboratory, Jiangsu Key Laboratory of Neurodegeneration, Center for Global Health, Nanjing Medical University, Nanjing, China.
- Nanjing University of Chinese Medicine, the Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.
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Singh A, Chow O, Jenkins S, Zhu L, Rose E, Astbury K, Chen R. Characterizing Ischaemic Tolerance in Rat Pheochromocytoma (PC12) Cells and Primary Rat Neurons. Neuroscience 2020; 453:17-31. [PMID: 33246056 DOI: 10.1016/j.neuroscience.2020.11.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 11/05/2020] [Accepted: 11/06/2020] [Indexed: 12/16/2022]
Abstract
Preconditioning tissue with sublethal ischaemia or hypoxia can confer tolerance (protection) against subsequent ischaemic challenge. In vitro ischaemic preconditioning (IPC) is typically achieved through oxygen glucose deprivation (OGD), whereas hypoxic preconditioning (HPC) involves oxygen deprivation (OD) alone. Here, we report the effects of preconditioning of OGD, OD or glucose deprivation (GD) in ischaemic tolerance models with PC12 cells and primary rat neurons. PC12 cells preconditioned (4 h) with GD or OGD, but not OD, prior to reperfusion (24 h) then ischaemic challenge (OGD 6 h), showed greater mitochondrial activity, reduced cytotoxicity and decreased apoptosis, compared to sham preconditioned PC12 cells. Furthermore, 4 h preconditioning with reduced glucose (0.565 g/L, reduced from 4.5 g/L) conferred protective effects, but not for higher concentrations (1.125 or 2.25 g/L). Preconditioning (4 h) with OGD, but not OD or GD, induced stabilization of hypoxia inducible factor 1α (HIF1α) and upregulation of HIF1 downstream genes (Vegf, Glut1, Pfkfb3 and Ldha). In primary rat neurons, only OGD preconditioning (4 h) conferred neuroprotection. OGD preconditioning (4 h) induced stabilization of HIF1α and upregulation of HIF1 downstream genes (Vegf, Phd2 and Bnip3). In conclusion, OGD preconditioning (4 h) followed by 24 h reperfusion induced ischaemic tolerance (against OGD, 6 h) in both PC12 cells and primary rat neurons. The OGD preconditioning protection is associated with HIF1α stabilization and upregulation of HIF1 downstream gene expression. GD preconditioning (4 h) leads to protection in PC12 cells, but not in neurons. This GD preconditioning-induced protection was not associated with HIF1α stabilization.
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Affiliation(s)
- Ayesha Singh
- School of Pharmacy and Bioengineering, Keele University, Staffordshire ST5 5BG, UK.
| | - Oliver Chow
- Department of Molecular, Cellular, Developmental Biology, University of Colorado, Boulder, CO 80302, USA
| | - Stuart Jenkins
- School of Medicine, Keele University, Staffordshire ST5 5BG, UK.
| | - Lingling Zhu
- Department of Brain Protection and Plasticity, Institute of Basic Medical Sciences, Beijing, China
| | - Emily Rose
- School of Pharmacy and Bioengineering, Keele University, Staffordshire ST5 5BG, UK.
| | - Katherine Astbury
- School of Pharmacy and Bioengineering, Keele University, Staffordshire ST5 5BG, UK
| | - Ruoli Chen
- School of Pharmacy and Bioengineering, Keele University, Staffordshire ST5 5BG, UK.
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Wang ZQ, Li K, Huang J, Huo TT, Lv PY. MicroRNA Let-7i Is a Promising Serum Biomarker for Post-stroke Cognitive Impairment and Alleviated OGD-Induced Cell Damage in vitro by Regulating Bcl-2. Front Neurosci 2020; 14:215. [PMID: 32265630 PMCID: PMC7105869 DOI: 10.3389/fnins.2020.00215] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 02/27/2020] [Indexed: 12/13/2022] Open
Abstract
Background The mechanism of post-stroke cognitive impairment (PSCI) has not been explained. We aimed to investigate whether miR-let-7i participates in the PSCI and illuminates its underlying role in oxygen–glucose deprivation (OGD)-induced cell apoptosis. Methods Blood samples from 36 subjects with PSCI and 38 with post-stroke cognitive normality (Non-PSCI) were collected to evaluate the differential expression of miR-let-7 family members, using qRT-PCT analysis. Spearman correlation was performed to estimate the correlation between the miR-1et-7i level and Montreal Cognitive Assessment (MoCA) score. Treatment of SH-SY5Y cells with OGD was used to induce cell apoptosis in vitro. Effects of miR-let-7i on OGD-induced cell apoptosis was estimated after transfection. The target gene of miR-let-7i was analyzed by dual luciferase reporter gene assay. Results The expression of miR-let-7i was up-regulated in PSCI patients compared with Non-PSCI (p < 0.001) and negatively correlated with MoCA score (r = −0.643, p < 0.001). When exposed to OGD, SH-SY5Y cells showed significant apoptosis accompanied by miR-let-7i up-regulation. In OGD-treated cells, miR-let-7i up-regulation was accompanied by cell apoptosis, while down-regulation showed the opposite effect. Luciferase reporter assay showed that Bcl-2 was a target gene of miR-let-7i. Western blot showed that miR-let-7i up-regulation promoted Bcl-2 expression, while qRT-PCR showed that miR-let-7i had no effect on Bcl-2 expression. Conclusion miR-let-7i was overexpressed in PSCI patients and it could be used as a diagnostic biomarker for PSCI. We illuminated the potential mechanism that miR-let-7i alleviated OGD-induced cell damage by targeting Bcl-2 at the post-transcriptional level.
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Affiliation(s)
- Zhan-Qiang Wang
- Department of Neurology, Hebei Medical University, Shijiazhuang, China.,Department of Neurology, Hebei General Hospital, Shijiazhuang, China.,Department of Neurology, Cangzhou People's Hospital, Cangzhou, China
| | - Kuo Li
- Department of Neurology, Hebei Medical University, Shijiazhuang, China.,Department of Neurology, Hebei General Hospital, Shijiazhuang, China.,No. 2 Department of Neurology, Cangzhou Central Hospital, Cangzhou, China
| | - Jie Huang
- Department of Neurology, Cangzhou People's Hospital, Cangzhou, China
| | - Tian-Tian Huo
- Department of Neurology, Hebei Medical University, Shijiazhuang, China.,Department of Neurology, Hebei General Hospital, Shijiazhuang, China
| | - Pei-Yuan Lv
- Department of Neurology, Hebei Medical University, Shijiazhuang, China.,Department of Neurology, Hebei General Hospital, Shijiazhuang, China
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8
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Zhou Y, Li KS, Liu L, Li SL. MicroRNA‑132 promotes oxidative stress‑induced pyroptosis by targeting sirtuin 1 in myocardial ischaemia‑reperfusion injury. Int J Mol Med 2020; 45:1942-1950. [PMID: 32236570 DOI: 10.3892/ijmm.2020.4557] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 11/19/2019] [Indexed: 11/05/2022] Open
Abstract
The present study aimed to investigate the roles of miR‑132 in myocardial ischaemia/reperfusion (I/R) injury and the underlying mechanisms. The myocardial I/R model was established using C57BL/J6 mice. Haematoxylin and eosin staining was performed to observe the injury of myocardial tissues. Commercial kits were used to measure the levels of serum myocardial enzymes and inflammatory factors. The in vitro I/R model was established by the hypoxia/reoxygenation method using H9C2 cells. A dual luciferase reporter assay was used to confirm the binding of miR‑132 and sirtuin 1 (SIRT1). Cell pyroptosis was determined using flow cytometry. Reverse transcription‑quantitative PCR was performed to determine the expression of miR‑132, SIRT1 and inflammatory factors. The levels of peroxisome proliferator‑activated receptor gamma coactivator (PGC)‑1α/nuclear factor erythroid‑2‑related factor 2 (Nrf2) signalling, oxidative stress and pyroptosis‑related proteins were detected by western blotting. Apparent histologic injury and elevated levels of serum myocardial enzymes and inflammatory factors were observed in the myocardial I/R model. miR‑132 was significantly upregulated and SIRT1 was markedly downregulated in I/R myocardial tissues. miR‑132 directly targeted SIRT1 and negatively regulated the expression of SIRT1. PGC‑1α, Nrf2, endothelial nitric oxide synthase and superoxide dismutase levels were significantly decreased, while inducible nitric oxide synthase and malondialdehyde levels were significantly increased by I/R induction. The pyroptosis‑related proteins NLRP3, caspase‑1 and interleukin (IL)‑1β were also significantly elevated by I/R induction. Inhibition of miR‑132 activated PGC‑1α/Nrf2 signalling and inhibited oxidative stress and the expression of the pyroptosis‑related proteins NLRP3, caspase‑1 and IL‑1β, which were all reversed by inhibiting SIRT1 with EX527. The findings of the present study indicated that inhibition of miR‑132 may ameliorate myocardial I/R injury by inhibiting oxidative stress and pyroptosis through activation of PGC‑1α/Nrf2 signalling by targeting SIRT1.
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Affiliation(s)
- Yan Zhou
- Department of Otolaryngology, Union Hospital, Tongji Medical College, Wuhan, Hubei 430000, P.R. China
| | - Kun-Sheng Li
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210006, P.R. China
| | - Lu Liu
- Department of Pharmacy, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430000, P.R. China
| | - Shi-Liang Li
- Division of Cardiothoracic and Vascular Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430000, P.R. China
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Su Q, Liu Y, Lv XW, Dai RX, Yang XH, Kong BH. LncRNA TUG1 mediates ischemic myocardial injury by targeting miR-132-3p/HDAC3 axis. Am J Physiol Heart Circ Physiol 2019; 318:H332-H344. [PMID: 31858814 DOI: 10.1152/ajpheart.00444.2019] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Increased production of reactive oxygen species (ROS) significantly contributed to the pathogenesis of acute myocardial infarction (AMI). Recent studies suggest that hypoxia upregulated the long noncoding RNA taurine upregulated gene 1 (TUG1). In this study, we explored the functional significance and molecular mechanisms of TUG1/miR-132-3p axis in ischemia-challenged cardiomyocytes. In primary cardiomyocytes challenged with H2O2, expressions of miR-132-3p, TUG1, and other target proteins were measured by RT quantitative PCR or Western blot analysis; cell viability by 3-(4,5-dimethylthiazolyl-2)-2,5-diphenyltetrazolium bromide assay; apoptosis by annexin V and propidium iodide staining; the abundance of acetylated H3K9 or histone deacetylase 3 (HDAC3) within the promoter of target genes by chromatin immunoprecipitation; the direct interaction between miR-132-3p and HDAC3 or TUG1 by luciferase reporter assay. The biological significance of miR-132-3p, TUG1, and HDAC3 was assessed using miR-132-3p mimic, siRNA-targeting TUG1 and HDAC3 inhibitor RGF966, respectively, in H2O2-challenged cells in vitro or ischemia-reperfusion (I/R)-induced AMI in vivo. miR-132-3p was downregulated, whereas TUG1 upregulated in H2O2-challenged cardiomyocytes. Overexpressing miR-132-3p or knocking down TUG1 significantly improved viability, inhibited apoptosis, and reduced ROS production in H2O2-stressed cardiomyocytes in vitro and alleviated I/R-induced AMI in vivo. Mechanistically, TUG1 sponged miR-132-3p and upregulated HDAC3, which reduced the acetylation of H3K9 and epigenetically inhibited expressions of antioxidative genes, including Bcl-xL, Prdx2, and Hsp70. The TUG1/miR-132-3p/HDAC3 axis critically regulates ROS production and the pathogenic development of AMI. Targeting TUG1, upregulating miR-132-3p, or inhibiting HDAC3 may benefit AMI treatment.NEW & NOTEWORTHY Increased production of reactive oxygen species (ROS) significantly contributed to the pathogenesis of acute myocardial infarction (AMI). Recent studies suggest that hypoxia upregulated the long noncoding RNA taurine upregulated gene 1 (TUG1). However, the underlying mechanisms remain elusive. In the present study, we reported for the first time that H2O2 or ischemia-reperfusion-induced TUG1, by sponging microRNA 132-3p, activated histone deacetylase 3, which in turn targeted multiple protective genes, stimulated intracellular ROS accumulation, and aggravated the injury of AMI. Our findings might provide some insight to seek new targets for AMI treatment.
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Affiliation(s)
- Qiang Su
- Department of Cardiology, The Affiliated Hospital of Guilin Medical University, Guilin, Guangxi Province, China
| | - Yang Liu
- Department of Cardiology, The Second People's Hospital of Nanning City, The Third Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Province, China
| | - Xiang-Wei Lv
- Department of Cardiology, The Affiliated Hospital of Guilin Medical University, Guilin, Guangxi Province, China
| | - Ri-Xin Dai
- Department of Cardiology, The Affiliated Hospital of Guilin Medical University, Guilin, Guangxi Province, China
| | - Xi-Heng Yang
- Department of Cardiology, The Affiliated Hospital of Guilin Medical University, Guilin, Guangxi Province, China
| | - Bing-Hui Kong
- Department of Cardiology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Province, China
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10
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Burek M, König A, Lang M, Fiedler J, Oerter S, Roewer N, Bohnert M, Thal SC, Blecharz-Lang KG, Woitzik J, Thum T, Förster CY. Hypoxia-Induced MicroRNA-212/132 Alter Blood-Brain Barrier Integrity Through Inhibition of Tight Junction-Associated Proteins in Human and Mouse Brain Microvascular Endothelial Cells. Transl Stroke Res 2019; 10:672-683. [PMID: 30617994 PMCID: PMC6842347 DOI: 10.1007/s12975-018-0683-2] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 11/26/2018] [Accepted: 12/21/2018] [Indexed: 12/13/2022]
Abstract
Blood-brain barrier (BBB) integrity is one of the important elements of central nervous system (CNS) homeostasis. MicroRNAs (miRs) have been demonstrated to play a role in many CNS disorders such as stroke and traumatic brain injury. MiR-212/132 are highly expressed in the CNS but their role at the BBB has not been characterized yet. Thus, we analyzed the expression of miR-212/132 in hypoxic mouse and human brain microvascular endothelial cells (BMEC) as well as in posttraumatic mouse and human brain tissue and serum exosomes. MiR-212/132 expression was detected in brain capillaries by in situ hybridization and was increased up to ten times in hypoxic BMEC. Over-expression of pre-miR-212/132 in BMEC decreased barrier properties and reduced migration of BMEC in the wound healing assay. We identified and validated tight junction proteins claudin-1 (Cldn1), junctional adhesion molecule 3 (Jam3), and tight junction-associated protein 1 (Tjap1) as potential miR-212/132 targets. Over-expression of miRs led to a decrease in mRNA and protein expression of Cldn1, Jam3, and Tjap1, which could be rescued by a respective anti-miR. In conclusion, our study identifies miR-212/132 as critical players at the hypoxic BBB. In addition, we propose three new direct miR-212/132 targets to be involved in miR-212/132-mediated effects on BBB properties.
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Affiliation(s)
- Malgorzata Burek
- Department of Anesthesia and Critical Care, University of Würzburg, Würzburg, Germany.
| | - Anna König
- Department of Anesthesia and Critical Care, University of Würzburg, Würzburg, Germany
| | - Mareike Lang
- Department of Anesthesia and Critical Care, University of Würzburg, Würzburg, Germany
| | - Jan Fiedler
- Hannover Medical School, Institute of Molecular and Translational Therapeutic Strategies (IMTTS), Hannover, Germany
| | - Sabrina Oerter
- Institute of Forensic Medicine, University of Würzburg, Würzburg, Germany
| | - Norbert Roewer
- Department of Anesthesia and Critical Care, University of Würzburg, Würzburg, Germany
| | - Michael Bohnert
- Institute of Forensic Medicine, University of Würzburg, Würzburg, Germany
| | - Serge C Thal
- Department of Anesthesiology, Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Kinga G Blecharz-Lang
- Department of Experimental Neurosurgery, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Berlin, Germany
| | - Johannes Woitzik
- Department of Neurosurgery and Center for Stroke Research Berlin (CSB), Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Thomas Thum
- Hannover Medical School, Institute of Molecular and Translational Therapeutic Strategies (IMTTS), Hannover, Germany
| | - Carola Y Förster
- Department of Anesthesia and Critical Care, University of Würzburg, Würzburg, Germany
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11
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Zhang L, Liu H, Xu K, Ling Z, Huang Y, Hu Q, Lu K, Liu C, Wang Y, Liu N, Zhang X, Xu B, Wu J, Chen S, Zhang G, Chen M. Hypoxia preconditioned renal tubular epithelial cell-derived extracellular vesicles alleviate renal ischaemia-reperfusion injury mediated by the HIF-1α/Rab22 pathway and potentially affected by microRNAs. Int J Biol Sci 2019; 15:1161-1176. [PMID: 31223277 PMCID: PMC6567810 DOI: 10.7150/ijbs.32004] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 04/16/2019] [Indexed: 02/06/2023] Open
Abstract
We previously found that hypoxia induced renal tubular epithelial cells (RTECs) release functional extracellular vesicles (EVs), which mediate the protection of remote ischaemic preconditioning (RIPC) for kidney ischaemia-reperfusion (I/R) injury. We intend to investigate whether the EVs were regulated by hypoxia-inducible factor 1α (HIF-1α) and Rab22 during RIPC. We also attempted to determine the potentially protective cargo of the EVs and reveal their underlying mechanism. Hypoxia preconditioning (HPC) of human kidney 2 (HK2) cells was conducted at 1% oxygen (O2) for different amounts of time to simulate IPC in vitro. EVs were isolated and then quantified. HIF-1α- and Rab22-inhibited HK2 cells were used to investigate the role of the HIF-1α/Rab22 pathway in HPC-induced EV production. Both normoxic and HPC EVs were treated in vivo to assess the protective effect of I/R injury. Moreover, microRNA (miRNA) sequencing analysis and bioinformatics analysis was performed. We revealed that the optimal conditions for simulating IPC in vitro was no more than 12 h under the 1% O2 culture circumstance. HPC enhanced the production of EVs, and the production of EVs was regulated by the HIF-1α/Rab22 pathway during HPC. Moreover, HPC EVs were found to be more effective at attenuating mice renal I/R injury. Furthermore, 16 miRNAs were upregulated in HPC EVs. Functional and pathway analysis indicated that the miRNAs may participate in multiple processes and pathways by binding their targets to influence the biochemical results during RIPC. We demonstrated that HIF-1α/Rab22 pathway mediated RTEC-derived EVs during RIPC. The HPC EVs protected renal I/R injury potentially through differentially expressed miRNAs. Further study is needed to verify the effective EV-miRNAs and their underlying mechanism.
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Affiliation(s)
- Lei Zhang
- Department of Urology, Zhongda Hospital, Southeast University, Nanjing, Jiangsu 210009, P.R. China.,Institute of Urology, Surgical Research Center, School of Medicine, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Han Liu
- Department of Respiratory Medicine, The First Hospital of Jilin University, Changchun, Jilin 130000, P.R. China
| | - Kai Xu
- Institute of Urology, Surgical Research Center, School of Medicine, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Zhixin Ling
- Department of Urology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Yeqing Huang
- Department of Urology, The Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Qiang Hu
- Department of Urology, Zhongda Hospital, Southeast University, Nanjing, Jiangsu 210009, P.R. China.,Institute of Urology, Surgical Research Center, School of Medicine, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Kai Lu
- Department of Urology, Zhongda Hospital, Southeast University, Nanjing, Jiangsu 210009, P.R. China.,Institute of Urology, Surgical Research Center, School of Medicine, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Chunhui Liu
- Department of Urology, Zhongda Hospital, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Yiduo Wang
- Department of Urology, Zhongda Hospital, Southeast University, Nanjing, Jiangsu 210009, P.R. China.,Institute of Urology, Surgical Research Center, School of Medicine, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Ning Liu
- Department of Urology, Zhongda Hospital, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Xiaowen Zhang
- Department of Urology, Zhongda Hospital, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Bin Xu
- Department of Urology, Zhongda Hospital, Southeast University, Nanjing, Jiangsu 210009, P.R. China.,Institute of Urology, Surgical Research Center, School of Medicine, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Jianping Wu
- Department of Urology, Zhongda Hospital, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Shuqiu Chen
- Department of Urology, Zhongda Hospital, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Guangyuan Zhang
- Department of Urology, Zhongda Hospital, Southeast University, Nanjing, Jiangsu 210009, P.R. China.,Institute of Urology, Surgical Research Center, School of Medicine, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Ming Chen
- Department of Urology, Zhongda Hospital, Southeast University, Nanjing, Jiangsu 210009, P.R. China.,Institute of Urology, Surgical Research Center, School of Medicine, Southeast University, Nanjing, Jiangsu 210009, P.R. China
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12
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Zou ZY, Liu J, Chang C, Li JJ, Luo J, Jin Y, Ma Z, Wang TH, Shao JL. Biliverdin administration regulates the microRNA-mRNA expressional network associated with neuroprotection in cerebral ischemia reperfusion injury in rats. Int J Mol Med 2019; 43:1356-1372. [PMID: 30664169 PMCID: PMC6365090 DOI: 10.3892/ijmm.2019.4064] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 12/18/2018] [Indexed: 12/21/2022] Open
Abstract
Inflammatory response has an important role in the outcome of cerebral ischemia reperfusion injury (CIR). Biliverdin (BV) administration can relieve CIR in rats, but the mechanism remains unknown. The aim of the present study was to explore the expressional network of microRNA (miRNA)-mRNA in CIR rats following BV administration. A rat middle cerebral artery occlusion model with BV treatment was established. After neurobehavior was evaluated by neurological severity scores (NSS), miRNA and mRNA expressional profiles were analyzed by microarray technology from the cerebral cortex subjected to ischemia and BV administration. Then, bioinformatics prediction was used to screen the correlation between miRNA and mRNA, and 20 candidate miRNAs and 33 candidate mRNAs were verified by reverse transcription-quantitative polymerase chain reaction. Furthermore, the regulation relationship between ETS proto-oncogene 1 (Ets1) and miRNA204-5p was examined by luciferase assay. A total of 86 miRNAs were differentially expressed in the BV group compared with the other groups. A total of 10 miRNAs and 26 candidate genes were identified as a core 'microRNA-mRNA' regulatory network that was linked with the functional improvement of BV administration in CIR rats. Lastly, the luciferase assay results confirmed that miRNA204-5p directly targeted Ets1. The present findings suggest that BV administration may regulate multiple miRNAs and mRNAs to improve neurobehavior in CIR rats, by influencing cell proliferation, apoptosis, maintaining ATP homeostasis, and angiogenesis.
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Affiliation(s)
- Zhi-Yao Zou
- Department of Anesthesiology, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650000, P.R. China
| | - Jia Liu
- Experimental Animal Center, Kunming Medical University, Kunming, Yunnan 650000, P.R. China
| | - Cheng Chang
- Department of Anesthesiology, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650000, P.R. China
| | - Jun-Jie Li
- Department of Anesthesiology, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650000, P.R. China
| | - Jing Luo
- Department of Anesthesiology, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650000, P.R. China
| | - Yuan Jin
- Experimental Animal Center, Kunming Medical University, Kunming, Yunnan 650000, P.R. China
| | - Zheng Ma
- Experimental Animal Center, Kunming Medical University, Kunming, Yunnan 650000, P.R. China
| | - Ting-Hua Wang
- Experimental Animal Center, Kunming Medical University, Kunming, Yunnan 650000, P.R. China
| | - Jian-Lin Shao
- Department of Anesthesiology, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650000, P.R. China
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13
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Inhibition of MicroRNA-204 Conducts Neuroprotection Against Spinal Cord Ischemia. Ann Thorac Surg 2018; 107:76-83. [PMID: 30278168 DOI: 10.1016/j.athoracsur.2018.07.082] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Revised: 06/19/2018] [Accepted: 07/30/2018] [Indexed: 12/16/2022]
Abstract
BACKGROUND MicroRNA(miR)-204 is an autophagy- and apoptosis-related gene. Neuroprotection by the inhibition of miR-204 against spinal cord ischemia was evaluated, and the roles of neuronal autophagy and apoptosis were investigated. METHODS Spinal cord ischemia was conducted in rats by cross-clamping the descending aorta for 14 minutes. Inhibition of miR-204 was induced by intrathecal injection of lentivirus vectors containing antagomiR-204. Hind-limb motor function was assessed with the motor deficit index. Lumbar spinal cords were harvested for histologic examinations and terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick-end labeling staining. Autophagy was evaluated by the LC3-II/LC3-I ratio and beclin-1 expression. Expressions of LC3-I, LC3-II, beclin-1, B-cell lymphoma-2 (BCL-2), caspase-3, and miR-204 were measured by Western blot and quantitative real-time polymerase chain reaction. Autophagy was blocked by 3-methyladenine. RESULTS Transient ischemia enhanced miR-204 expression and the LC3-II/LC3-I ratio and downregulated BCL-2 expression in spinal cords in a time-dependent manner. AntagomiR-204 significantly reduced expressions of miR-204 and caspase-3, dramatically upregulated expressions of beclin-1 and BCL-2 and the LC3-II/LC3-I ratio in spinal cords after reperfusion. Compared with controls, inhibition of miR-204 markedly decreased the motor deficit index scores at 6, 12, 24, and 48 hours after reperfusion; increased the number of viable motor neurons; and decreased the number of apoptotic neurons. 3-Methyladenine completely abolished enhancements of the LC3-II/LC3-I ratio and beclin-1 expression induced by antagomiR-204 and inhibited the protective effect on hind-limb motor function. CONCLUSIONS Inhibition of miR-204 exerts spinal cord protection against ischemia-reperfusion injury, possibly via promotion of autophagy and antiapoptotic effects.
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14
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MicroRNA in glutamate receptor-dependent neurological diseases. Clin Sci (Lond) 2017; 131:1591-1604. [PMID: 28667061 DOI: 10.1042/cs20170964] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 05/05/2017] [Accepted: 05/15/2017] [Indexed: 02/01/2023]
Abstract
Glutamate-mediated excitotoxicity is the major neuropathological process contributing to numerous neurological diseases. Recently, emerging evidence indicates that microRNAs (miRNAs) play essential roles in the pathophysiology of a wide range of neurological diseases. Notably, there have been significant developments in understanding the biogenesis of miRNAs, their regulatory mechanisms, and their potential as effective biomarkers and therapies. In the present review, we summarize the recent literature that highlights the versatile roles played by miRNAs in glutamate receptor (GluR)-dependent neurological diseases. Based on the reported studies to date, modulation of miRNAs could emerge as a promising therapeutic target for a variety of neurological diseases that were discussed in this review.
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15
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Sun ZZ, Lv ZY, Tian WJ, Yang Y. MicroRNA-132 protects hippocampal neurons against oxygen-glucose deprivation-induced apoptosis. Int J Immunopathol Pharmacol 2017. [PMID: 28627974 PMCID: PMC5815264 DOI: 10.1177/0394632017715837] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Hypoxic-ischemic brain injury (HIBI) results in death or long-term neurologic impairment in both adults and children. In this study, we investigated the effects of microRNA-132 (miR-132) dysregulation on oxygen-glucose deprivation (OGD)-induced apoptosis in fetal rat hippocampal neurons, in order to reveal the therapeutic potential of miR-132 on HIBI. MiR-132 dysregulation was induced prior to OGD exposure by transfection of primary fetal rat hippocampal neurons with miR-132 mimic or miR-132 inhibitor. The effects of miR-132 overexpression and suppression on OGD-stimulated hippocampal neurons were evaluated by detection of cell viability, apoptotic cells rate, and the expression of apoptosis-related proteins. Besides, TargetScan database and dual luciferase activity assay were used to seek a target gene of miR-132. As a result, miR-132 was highly expressed in hippocampal neurons following 2 h of OGD exposure. MiR-132 overexpression significantly increased OGD-diminished cell viability and reduced OGD-induced apoptosis at 12, 24, and 48 h post-OGD. MiR-132 overexpression significantly down-regulated the expressions of Bax, cytochrome c, and caspase-9, but up-regulated BCl-2. Caspase-3 activity was also significantly decreased by miR-132 overexpression. Furthermore, FOXO3 was a direct target of miR-132, and it was negatively regulated by miR-132. To conclude, our results provide evidence that miR-132 protects hippocampal neurons against OGD injury by inhibiting apoptosis.
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Affiliation(s)
- Zu-Zhen Sun
- Department of Neurology, Affiliated Hospital of Jining Medical University, Jining, China
| | - Zhan-Yun Lv
- Department of Neurology, Affiliated Hospital of Jining Medical University, Jining, China
| | - Wen-Jing Tian
- Department of Neurology, Affiliated Hospital of Jining Medical University, Jining, China
| | - Yan Yang
- Department of Neurology, Affiliated Hospital of Jining Medical University, Jining, China
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16
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Millan MJ. Linking deregulation of non-coding RNA to the core pathophysiology of Alzheimer's disease: An integrative review. Prog Neurobiol 2017; 156:1-68. [PMID: 28322921 DOI: 10.1016/j.pneurobio.2017.03.004] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 03/09/2017] [Accepted: 03/09/2017] [Indexed: 02/06/2023]
Abstract
The human genome encodes a vast repertoire of protein non-coding RNAs (ncRNA), some specific to the brain. MicroRNAs, which interfere with the translation of target mRNAs, are of particular interest since their deregulation has been implicated in neurodegenerative disorders like Alzheimer's disease (AD). However, it remains challenging to link the complex body of observations on miRNAs and AD into a coherent framework. Using extensive graphical support, this article discusses how a diverse panoply of miRNAs convergently and divergently impact (and are impacted by) core pathophysiological processes underlying AD: neuroinflammation and oxidative stress; aberrant generation of β-amyloid-42 (Aβ42); anomalies in the production, cleavage and post-translational marking of Tau; impaired clearance of Aβ42 and Tau; perturbation of axonal organisation; disruption of synaptic plasticity; endoplasmic reticulum stress and the unfolded protein response; mitochondrial dysfunction; aberrant induction of cell cycle re-entry; and apoptotic loss of neurons. Intriguingly, some classes of miRNA provoke these cellular anomalies, whereas others act in a counter-regulatory, protective mode. Moreover, changes in levels of certain species of miRNA are a consequence of the above-mentioned anomalies. In addition to miRNAs, circular RNAs, piRNAs, long non-coding RNAs and other types of ncRNA are being increasingly implicated in AD. Overall, a complex mesh of deregulated and multi-tasking ncRNAs reciprocally interacts with core pathophysiological mechanisms underlying AD. Alterations in ncRNAs can be detected in CSF and the circulation as well as the brain and are showing promise as biomarkers, with the ultimate goal clinical exploitation as targets for novel modes of symptomatic and course-altering therapy.
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Affiliation(s)
- Mark J Millan
- Centre for Therapeutic Innovation in Neuropsychiatry, institut de recherche Servier, 125 chemin de ronde, 78290 Croissy sur Seine, France.
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17
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Ji Q, Gao J, Zheng Y, Liu X, Zhou Q, Shi C, Yao M, Chen X. Inhibition of microRNA-153 protects neurons against ischemia/reperfusion injury in an oxygen-glucose deprivation and reoxygenation cellular model by regulating Nrf2/HO-1 signaling. J Biochem Mol Toxicol 2017; 31. [DOI: 10.1002/jbt.21905] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Revised: 01/17/2017] [Accepted: 01/26/2017] [Indexed: 12/21/2022]
Affiliation(s)
- Qiong Ji
- Department of Pharmacology, College of Basic Medical Science; Jilin University; Changchun Jilin 130021 People's Republic of China
- Department of Neonatology; Frist Hospital of Jilin University; Changchun Jilin 130021 People's Republic of China
| | - Jianbo Gao
- Department of Pediatrics Neurology; Frist Hospital of Jilin University; Changchun Jilin 130021 People's Republic of China
| | - Yan Zheng
- Cadre's Ward of Frist Hospital of Jilin University; Changchun Jilin 130021 People's Republic of China
| | - Xueli Liu
- Department of Pharmacology, College of Basic Medical Science; Jilin University; Changchun Jilin 130021 People's Republic of China
| | - Qiangqiang Zhou
- Department of Pharmacology, College of Basic Medical Science; Jilin University; Changchun Jilin 130021 People's Republic of China
| | - Canxia Shi
- Department of Pharmacology, College of Basic Medical Science; Jilin University; Changchun Jilin 130021 People's Republic of China
| | - Meng Yao
- Department of Pharmacology, College of Basic Medical Science; Jilin University; Changchun Jilin 130021 People's Republic of China
| | - Xia Chen
- Department of Pharmacology, College of Basic Medical Science; Jilin University; Changchun Jilin 130021 People's Republic of China
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18
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Chandran R, Mehta SL, Vemuganti R. Non-coding RNAs and neuroprotection after acute CNS injuries. Neurochem Int 2017; 111:12-22. [PMID: 28131900 DOI: 10.1016/j.neuint.2017.01.015] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Revised: 01/17/2017] [Accepted: 01/24/2017] [Indexed: 02/07/2023]
Abstract
Accumulating evidence indicates that various classes of non-coding RNAs (ncRNAs) including microRNAs (miRNAs), PIWI-interacting RNAs (piRNAs) and long non-coding RNAs (lncRNAs) play important roles in normal state as well as the diseases of the CNS. Interestingly, ncRNAs have been shown to interact with messenger RNA, DNA and proteins, and these interactions could induce epigenetic modifications and control transcription and translation, thereby adding a new layer of genomic regulation. The ncRNA expression profiles are known to be altered after acute CNS injuries including stroke, traumatic brain injury and spinal cord injury that are major contributors of morbidity and mortality worldwide. Hence, a better understanding of the functional significance of ncRNAs following CNS injuries could help in developing potential therapeutic strategies to minimize the neuronal damage in those conditions. The potential of ncRNAs in blood and CSF as biomarkers for diagnosis and/or prognosis of acute CNS injuries has also gained importance in the recent years. This review highlighted the current progress in the understanding of the role of ncRNAs in initiation and progression of secondary neuronal damage and their application as biomarkers after acute CNS injuries.
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Affiliation(s)
- Raghavendar Chandran
- Department of Neurological Surgery, University of Wisconsin-Madison and William S. Middleton Veterans Hospital, Madison, WI, USA
| | - Suresh L Mehta
- Department of Neurological Surgery, University of Wisconsin-Madison and William S. Middleton Veterans Hospital, Madison, WI, USA
| | - Raghu Vemuganti
- Department of Neurological Surgery, University of Wisconsin-Madison and William S. Middleton Veterans Hospital, Madison, WI, USA.
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20
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Mao G, Ren P, Wang G, Yan F, Zhang Y. MicroRNA-128-3p Protects Mouse Against Cerebral Ischemia Through Reducing p38α Mitogen-Activated Protein Kinase Activity. J Mol Neurosci 2016; 61:152-158. [DOI: 10.1007/s12031-016-0871-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 11/22/2016] [Indexed: 12/27/2022]
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21
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Affiliation(s)
- David Gurwitz
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Sagol School of Neuroscience, Tel Aviv University, Tel-Aviv, Israel
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