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Lv Y, Xie G, Xi Y, Zhang L, Wang J, Wu J. MicroRNA Regulatory Pattern in Diabetic Mouse Cortex at Different Stages Following Ischemic Stroke. J Mol Neurosci 2024; 74:36. [PMID: 38568285 DOI: 10.1007/s12031-024-02207-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 03/14/2024] [Indexed: 04/05/2024]
Abstract
After ischemic stroke, microRNAs (miRNAs) participate in various processes, including immune responses, inflammation, and angiogenesis. Diabetes is a key factor increasing the risk of ischemic stroke; however, the regulatory pattern of miRNAs at different stages of diabetic stroke remains unclear. This study comprehensively analyzed the miRNA expression profiles in diabetic mice at 1, 3, and 7 days post-reperfusion following the middle cerebral artery occlusion (MCAO). We identified differentially expressed (DE) miRNAs in diabetic stroke and found significant dysregulation of some novel miRNAs (novel_mir310, novel_mir89, and novel_mir396) post-stroke. These DEmiRNAs were involved in apoptosis and the formation of tight junctions. Finally, we identified three groups of time-dependent DE miRNAs (miR-6240, miR-135b-3p, and miR-672-5p). These have the potential to serve as biomarkers of diabetic stroke. These findings provide a new perspective for future research, emphasizing the dynamic changes in miRNA expression after diabetic stroke and offering potential candidates as biomarkers for future clinical applications.
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Affiliation(s)
- Yifei Lv
- Department of Pharmacy, Zhongnan Hospital of Wuhan University, Dong-Hu Road #169, Wuhan, Hubei, 430071, P.R. China
| | - Guanghui Xie
- Department of Pathology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
| | - Yujie Xi
- Department of Pharmacy, Zhongnan Hospital of Wuhan University, Dong-Hu Road #169, Wuhan, Hubei, 430071, P.R. China
| | - Liu Zhang
- Department of Pharmacy, Zhongnan Hospital of Wuhan University, Dong-Hu Road #169, Wuhan, Hubei, 430071, P.R. China
| | - Jiajun Wang
- Department of Pharmacy, Zhongnan Hospital of Wuhan University, Dong-Hu Road #169, Wuhan, Hubei, 430071, P.R. China
| | - Jianhua Wu
- Department of Pharmacy, Zhongnan Hospital of Wuhan University, Dong-Hu Road #169, Wuhan, Hubei, 430071, P.R. China.
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2
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Khanduja S, Kim J, Kang JK, Feng CY, Vogelsong MA, Geocadin RG, Whitman G, Cho SM. Hypoxic-Ischemic Brain Injury in ECMO: Pathophysiology, Neuromonitoring, and Therapeutic Opportunities. Cells 2023; 12:1546. [PMID: 37296666 PMCID: PMC10252448 DOI: 10.3390/cells12111546] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 06/02/2023] [Accepted: 06/03/2023] [Indexed: 06/12/2023] Open
Abstract
Extracorporeal membrane oxygenation (ECMO), in conjunction with its life-saving benefits, carries a significant risk of acute brain injury (ABI). Hypoxic-ischemic brain injury (HIBI) is one of the most common types of ABI in ECMO patients. Various risk factors, such as history of hypertension, high day 1 lactate level, low pH, cannulation technique, large peri-cannulation PaCO2 drop (∆PaCO2), and early low pulse pressure, have been associated with the development of HIBI in ECMO patients. The pathogenic mechanisms of HIBI in ECMO are complex and multifactorial, attributing to the underlying pathology requiring initiation of ECMO and the risk of HIBI associated with ECMO itself. HIBI is likely to occur in the peri-cannulation or peri-decannulation time secondary to underlying refractory cardiopulmonary failure before or after ECMO. Current therapeutics target pathological mechanisms, cerebral hypoxia and ischemia, by employing targeted temperature management in the case of extracorporeal cardiopulmonary resuscitation (eCPR), and optimizing cerebral O2 saturations and cerebral perfusion. This review describes the pathophysiology, neuromonitoring, and therapeutic techniques to improve neurological outcomes in ECMO patients in order to prevent and minimize the morbidity of HIBI. Further studies aimed at standardizing the most relevant neuromonitoring techniques, optimizing cerebral perfusion, and minimizing the severity of HIBI once it occurs will improve long-term neurological outcomes in ECMO patients.
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Affiliation(s)
- Shivalika Khanduja
- Division of Cardiac Surgery, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (S.K.); (J.K.K.); (G.W.)
| | - Jiah Kim
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; (J.K.); (C.-Y.F.)
| | - Jin Kook Kang
- Division of Cardiac Surgery, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (S.K.); (J.K.K.); (G.W.)
| | - Cheng-Yuan Feng
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; (J.K.); (C.-Y.F.)
| | - Melissa Ann Vogelsong
- Department of Anesthesiology, Perioperative & Pain Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA;
| | - Romergryko G. Geocadin
- Divisions of Neurosciences Critical Care, Departments of Neurology, Surgery, Anesthesiology and Critical Care Medicine and Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA;
| | - Glenn Whitman
- Division of Cardiac Surgery, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (S.K.); (J.K.K.); (G.W.)
| | - Sung-Min Cho
- Division of Cardiac Surgery, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (S.K.); (J.K.K.); (G.W.)
- Divisions of Neurosciences Critical Care, Departments of Neurology, Surgery, Anesthesiology and Critical Care Medicine and Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA;
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Yang X, Liao K, Deng IB, Zhang L. Knockdown of interleukin-6 plays a neuroprotective role against hypoxia-ischemia in neonatal rats via inhibition of caspase 3 and Bcl-2-associated X protein signaling pathway. IBRAIN 2022; 8:413-428. [PMID: 37786746 PMCID: PMC10529178 DOI: 10.1002/ibra.12067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 09/05/2022] [Accepted: 09/06/2022] [Indexed: 10/04/2023]
Abstract
This study aimed to investigate the role of interleukin-6 (IL-6) in the pathogenesis of neonatal hypoxic-ischemic encephalopathy (NHIE). Sprague-Dawley (SD) rats were used for the establishment of hypoxic-ischemic (HI) model. The Zea-Longa scoring was used to evaluate the extent of the neurological deficits. Triphenyl tetrazolium chloride (TTC) staining was used to measure the volume of infarction in the brain following HI protocol. The expression of IL-6 in the cortex and/or hippocampus at multiple time points after HI was examined by immunohistochemistry, western blotting and immunofluorescence. Moreover, small interfering RNAs (siRNA) were used to inhibit the expression of IL-6 in-vitro and in-vivo, and the concomitant expression of the Bcl-2 associated X protein (BAX) and caspase 3 was also measured. HI induced a significant brain damage, and these pathological changes were accompanied by IL-6 upregulation which was found localized in cortical neurons. The inhibition of IL-6 expression fostered neuronal and axonal growth, and a reduction in cellular apoptosis in cortical neuronal cultures, and cortex and hippocampus of neonatal rats. The expression of apoptotic markers such as BAX and caspase 3 was closely associated with IL-6. Downregulation of IL-6 could ameliorate HI-induced deficiencies by mediating the expression of caspase 3 and BAX.
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Affiliation(s)
- Xiu Yang
- Animal Model Research Center of Human DiseaseKunming Medical UniversityKunmingChina
| | - Ke‐Han Liao
- School of AnesthesiologySouthwest Medical UniversityLuzhouChina
| | - Isaac B. Deng
- Health and Biomedical Innovation, Clinical and Health SciencesUniversity of South AustraliaAdelaideSouth AustraliaAustralia
| | - Lan‐Chun Zhang
- Animal Model Research Center of Human DiseaseKunming Medical UniversityKunmingChina
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4
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Can U, Marzioglu E, Akdu S. Some miRNA expressions and their targets in ischemic stroke. NUCLEOSIDES, NUCLEOTIDES & NUCLEIC ACIDS 2022; 41:1224-1262. [PMID: 35876186 DOI: 10.1080/15257770.2022.2098974] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 06/15/2022] [Accepted: 07/02/2022] [Indexed: 06/15/2023]
Abstract
Ischemic stroke (IS) is a global health challenge leading to life-long disabilities or the deaths of patients. IS is a complex disease where genetic and environmental factors are both concerned with the pathophysiology of the condition. Here, we aimed to investigate various microRNA (miRNA) expressions and their targets in IS. A rapid and accurate diagnosis of acute IS is important to perform appropriate treatment. Therefore, there is a need for a more rapid and simple tool to carry out an acute diagnosis of IS. miRNAs are small RNA molecules serving as precious biomarkers due to their easy detection and stability in blood samples. The present systematic review aimed to summarize previous studies investigating several miRNA expressions and their targets in IS.
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Affiliation(s)
- Ummugulsum Can
- Department of Biochemistry, Konya City Hospital, Konya, Türkiye
| | - Ebru Marzioglu
- Department of Genetics, Konya Training and Research Hospital, Konya, Türkiye
| | - Sadinaz Akdu
- Department of Biochemistry, Fethiye State Hospital, Muğla, Turkey
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Noncoding RNA as Diagnostic and Prognostic Biomarkers in Cerebrovascular Disease. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:8149701. [PMID: 35498129 PMCID: PMC9042605 DOI: 10.1155/2022/8149701] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Accepted: 03/22/2022] [Indexed: 02/06/2023]
Abstract
Noncoding RNAs (ncRNAs), such as microRNAs, long noncoding RNAs, and circular RNAs, play an important role in the pathophysiology of cerebrovascular diseases (CVDs). They are effectively detectable in body fluids, potentially suggesting new biomarkers for the early detection and prognosis of CVDs. In this review, the physiological functions of circulating ncRNAs and their potential role as diagnostic and prognostic markers in patients with cerebrovascular diseases are discussed, especially in acute ischemic stroke, subarachnoid hemorrhage, and moyamoya disease.
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Expression Profile of miRs in Mesial Temporal Lobe Epilepsy: Systematic Review. Int J Mol Sci 2022; 23:ijms23020951. [PMID: 35055144 PMCID: PMC8781102 DOI: 10.3390/ijms23020951] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 01/08/2022] [Accepted: 01/12/2022] [Indexed: 02/04/2023] Open
Abstract
Temporal lobe epilepsy (TLE) is one of the most common forms of focal epilepsy in children and adults. TLE is characterized by variable onset and seizures. Moreover, this form of epilepsy is often resistant to pharmacotherapy. The search for new mechanisms for the development of TLE may provide us with a key to the development of new diagnostic methods and a personalized approach to the treatment. In recent years, the role of non-coding ribonucleic acids (RNA) has been actively studied, among which microRNA (miR) is of the greatest interest. (1) Background: The purpose of the systematic review is to analyze the studies carried out on the role of miRs in the development of mesial TLE (mTLE) and update the existing knowledge about the biomarkers of this disease. (2) Methods: The search for publications was carried out in the databases PubMed, Springer, Web of Science, Clinicalkeys, Scopus, OxfordPress, Cochrane. The search was carried out using keywords and combinations. We analyzed publications for 2016–2021, including original studies in an animal model of TLE and with the participation of patients with TLE, thematic and systemic reviews, and Cochrane reviews. (3) Results: this thematic review showed that miR‒155, miR‒153, miR‒361‒5p, miR‒4668‒5p, miR‒8071, miR‒197‒5p, miR‒145, miR‒181, miR‒199a, miR‒1183, miR‒129‒2‒3p, miR‒143‒3p (upregulation), miR–134, miR‒0067835, and miR‒153 (downregulation) can be considered as biomarkers of mTLE. However, the roles of miR‒146a, miR‒142, miR‒106b, and miR‒223 are questionable and need further study. (4) Conclusion: In the future, it will be possible to consider previously studied miRs, which have high specificity and sensitivity in mTLE, as prognostic biomarkers (predictors) of the risk of developing this disease in patients with potentially epileptogenic structural damage to the mesial regions of the temporal lobe of the brain (congenital disorders of the neuronal migration and neurogenesis, brain injury, neuro-inflammation, tumor, impaired blood supply, neurodegeneration, etc.).
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H19 Overexpression Improved Efficacy of Mesenchymal Stem Cells in Ulcerative Colitis by Modulating the miR-141/ICAM-1 and miR-139/CXCR4 Axes. DISEASE MARKERS 2021; 2021:7107705. [PMID: 34630738 PMCID: PMC8494579 DOI: 10.1155/2021/7107705] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/30/2021] [Accepted: 09/02/2021] [Indexed: 12/30/2022]
Abstract
Overexpression of C-X-C motif chemokine receptor 4 (CXCR4) and intercellular cell adhesion molecule-1 (ICAM-1) may promote homing of mesenchymal stem cells (MSC). In this study, we treated ulcerative colitis animals with MSC preconditioned with or without H19 and compared the therapeutic effect of MSC and MSC-H19. We evaluated the regulatory relationship of H19 vs. miR-141/miR-139 and miR-141/miR-139 vs. ICAM-1/CXCR4. We established an ulcerative colitis mouse model to assess the effect of MSC and MSC-H19. H19 was found to bind to miR-141 and miR-139. The activity of H19 was strongly decreased in cells c-transfected with miR-141/miR-139 and WT H19. ICAM-1 was confirmed to be targeted by miR-141 and CXCR4 was targeted by miR-139. The H19 expression showed a negative regulatory relationship with the miR-141 and miR-139 expression but a positive regulatory relationship with the ICAM-1 and CXCR4 expression. In summary, the overexpression of H19 in MSC downregulated miR-139 and miR-141, thus increasing the activity of their targets ICAM-1 and CXCR4, respectively, to exhibit therapeutic effects in ulcerative colitis.
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Zhao X, Wang M, Sun Z, Zhuang S, Zhang W, Yang Z, Han X, Nie S. MicroRNA-139-5p improves sepsis-induced lung injury by targeting Rho-kinase1. Exp Ther Med 2021; 22:1059. [PMID: 34434273 PMCID: PMC8353635 DOI: 10.3892/etm.2021.10493] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 03/24/2021] [Indexed: 02/03/2023] Open
Abstract
Sepsis-induced acute lung injury (ALI) is an inflammatory process that involves inflammatory cytokine production and cell apoptosis. In the present study, the regulatory role of microRNA (miR)-139-5p in sepsis-induced ALI was investigated using a murine model of cecal ligation puncture (CLP) and an in vitro model using lipopolysaccharide (LPS)-induced normal human bronchial epithelial cells (NHBEs). Sepsis-induced pathological changes in the lungs of ALI mice were detected using hematoxylin and eosin staining. Lung water content was determined, and the expression of proinflammatory cytokines in the bronchoalveolar lavage fluid and serum of sepsis-induced ALI mice were quantified using ELISA. The levels of oxidative stress in lung tissues were determined using commercial kits. The degree of apoptosis was determined using a TUNEL assay. The expression levels of miR-139-5p and Rho-kinase 1 (ROCK1) were determined using reverse transcription-quantitative PCR and western blot analyses. A dual-luciferase reporter assay was used to confirm the direct targeting of ROCK1 by miR-139-5p. NHBEs were co-transfected with vectors expressing ROCK1 (or empty vector) and miR-139-5p mimics or control mimics prior to LPS treatment. The transcriptional activity of caspase-3, the ratio of apoptotic cells, the expression levels of mucin 5AC, mucin 1, TNF-α, IL-1β, IL-6, NLR family pyrin domain containing 3, apoptosis-associated speck-like protein containing a CARD and caspase-1 were evaluated. Compared with the normal group, mice that underwent CLP exhibited abnormal lung morphology, enhanced production of TNF-α, IL-1β and IL-6, increased reactive oxygen species (ROS), malondialdehyde and lactate dehydrogenase levels, an increased proportion of apoptotic cells and increased ROCK1 expression. Superoxide dismutase, glutathione peroxidase and miR-139-5p levels were decreased following CLP. In the NHBEs, stimulation with LPS caused a marked increase in inflammatory cytokine levels and apoptosis compared with the untreated cells. Overexpression of miR-139-5p attenuated cell apoptosis and inflammation. Overexpression of ROCK1 in NHBEs restored the ROS levels and proinflammatory cytokine production inhibited by miR-139-5p. In conclusion, miR-139-5p alleviated sepsis-induced ALI via suppression of its downstream target, ROCK1, suggesting that miR-139-5p may hold promise in the treatment of sepsis-induced ALI.
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Affiliation(s)
- Xinmin Zhao
- Department of Emergency Medicine, Jinling Hospital, The First School of Clinical Medicine, Southern Medical University, Nanjing, Jiangsu 210002, P.R. China.,Department of Anesthesiology, Yancheng Maternity and Child Health Hospital, Yancheng, Jiangsu 224002, P.R. China
| | - Mengmeng Wang
- Department of Emergency Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210002, P.R. China
| | - Zhaorui Sun
- Department of Emergency Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210002, P.R. China
| | - Suyuan Zhuang
- Department of Emergency Medicine, Jinling Hospital, The First School of Clinical Medicine, Southern Medical University, Nanjing, Jiangsu 210002, P.R. China
| | - Wei Zhang
- Department of Emergency Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210002, P.R. China
| | - Zhizhou Yang
- Department of Emergency Medicine, Jinling Hospital, The First School of Clinical Medicine, Southern Medical University, Nanjing, Jiangsu 210002, P.R. China.,Department of Emergency Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210002, P.R. China
| | - Xiaoqin Han
- Department of Emergency Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210002, P.R. China
| | - Shinan Nie
- Department of Emergency Medicine, Jinling Hospital, The First School of Clinical Medicine, Southern Medical University, Nanjing, Jiangsu 210002, P.R. China.,Department of Emergency Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210002, P.R. China
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Zhang T, Yang C, Chu J, Ning LN, Zeng P, Wang XM, Shi Y, Qin BJ, Qu N, Zhang Q, Tian Q. Emodin Prevented Depression in Chronic Unpredicted Mild Stress-Exposed Rats by Targeting miR-139-5p/5-Lipoxygenase. Front Cell Dev Biol 2021; 9:696619. [PMID: 34381778 PMCID: PMC8350171 DOI: 10.3389/fcell.2021.696619] [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] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 06/18/2021] [Indexed: 12/28/2022] Open
Abstract
Background The use of medicinal plant ingredients is one of the goals of developing potential drugs for treating depression. Compelling evidence suggests that anti-inflammatory medicines may block the occurrence of depression. We studied the effect of a natural compound, emodin, on the development of psychosocial stress-induced depression and the underlying mechanisms. Methods Chronic unpredicted mild stress (CUMS) for 7 weeks was performed to replicate psychosocial stress in rats. The sucrose preference test, force swimming test, and open field test were used to evaluate their behaviors. The differentially expressed proteins in the hippocampus were analyzed using proteomics. Nissl staining and Golgi staining were used to detect the loss of neurons and synapses, immunohistochemical staining was used to detect the activation of microglia, and the enzyme-linked immunosorbent assay was used to detect the levels of pro-inflammatory cytokines. Western blotting, immunofluorescence, and quantitative polymerase chain reaction were also performed. Results Hippocampal inflammation with up-regulated 5-lipoxygenase (5-LO) was observed in the depressed rats after CUMS exposure. The upregulation of 5-LO was caused by decreased miR-139-5p. To observe the effect of emodin, we screened out depression-susceptible (DeS) rats during CUMS and treated them with emodin (80 mg/kg/day). Two weeks later, emodin prevented the depression behaviors in DeS rats along with a series of pathological changes in their hippocampi, such as loss of neurons and spines, microglial activation, increased interleukin-1β and tumor necrosis factor-α, and the activation of 5-LO. Furthermore, we demonstrated that emodin inhibited its excess inflammatory response, possibly by targeting miR-139-5p/5-LO and modulating glycogen synthase kinase 3β and nuclear factor erythroid 2-related factor 2. Conclusion These results provide important evidence that emodin may be a candidate agent for the treatment of depression and established a key role of miR-139-5p/5-LO in the inflammation of depression.
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Affiliation(s)
- Teng Zhang
- Department of Pathology and Pathophysiology, Key Laboratory of Neurological Disease of National Education Ministry, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Neurology, Shanxian Central Hospital, the Affiliated Huxi Hospital of Jining Medical College, Heze, China
| | - Can Yang
- Department of Pathology and Pathophysiology, Key Laboratory of Neurological Disease of National Education Ministry, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiang Chu
- Department of Pathology and Pathophysiology, Key Laboratory of Neurological Disease of National Education Ministry, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lin-Na Ning
- Department of Pathology and Pathophysiology, Key Laboratory of Neurological Disease of National Education Ministry, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Pathology, Gannan Medical University Pingxiang Hospital, Pingxiang, China
| | - Peng Zeng
- Department of Pathology and Pathophysiology, Key Laboratory of Neurological Disease of National Education Ministry, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiao-Ming Wang
- Department of Pathology and Pathophysiology, Key Laboratory of Neurological Disease of National Education Ministry, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yan Shi
- Department of Pathology and Pathophysiology, Key Laboratory of Neurological Disease of National Education Ministry, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Bao-Jian Qin
- Department of Neurology, Shanxian Central Hospital, the Affiliated Huxi Hospital of Jining Medical College, Heze, China
| | - Na Qu
- Department of Pathology and Pathophysiology, Key Laboratory of Neurological Disease of National Education Ministry, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Psychological Trauma, Wuhan Mental Health Center, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Research Center for Psychological and Health Sciences, China University of Geosciences, Wuhan, China
| | - Qi Zhang
- Department of Pathology and Pathophysiology, Key Laboratory of Neurological Disease of National Education Ministry, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Psychiatry, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qing Tian
- Department of Pathology and Pathophysiology, Key Laboratory of Neurological Disease of National Education Ministry, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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10
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Fei S, Cao L, Li S. RETRACTED: microRNA-139-5p alleviates neurological deficit in hypoxic-ischemic brain damage via HDAC4 depletion and BCL-2 activation. Brain Res Bull 2021; 169:73-80. [PMID: 33400954 DOI: 10.1016/j.brainresbull.2020.12.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 12/15/2020] [Accepted: 12/28/2020] [Indexed: 01/03/2023]
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). This article has been retracted at the request of the Editor-in-Chief as there are concerns about the reliability of the results. Concerns have been raised about the western blot bands in Figs. 5A, 6D having the same eyebrow shaped phenotype as found in many other publications as tabulated here (https://docs.google.com/spreadsheets/d/149EjFXVxpwkBXYJOnOHb6RhAqT4a2llhj9LM60MBffM/edit#gid=0). The journal requested the corresponding author to comment on these concerns and send the raw data, however the author was not able to provide uncropped images of the original gels. The Editor-in-Chief therefore no longer has confidence in the data and conclusions of this study.
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Affiliation(s)
- Shinuan Fei
- Department of Pediatrics, Edong Healthcare Group, Huangshi Maternity and Children's Health Hospital, Huangshi, 435000, Hubei, PR China
| | - Lichun Cao
- Department of Medical Customer Service, Huangshi Central Hospital•Affiliated Hospital of Hubei Polytechnic University, No. 293, Yiyuan Street, XiSaiShan District, Huangshi, 435000, Hubei, PR China.
| | - Sheng Li
- Department of Laboratory Medicine, Edong Healthcare Group, Huangshi Maternity and Children's Health Hospital, No. 80, Guilin South Road, Xialu District, Huangshi, 435000, Hubei, PR China
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11
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Wang P, Zhang Y, Xia Y, Xu D, Wang H, Liu D, Xu S, Sun Y. MicroRNA-139-5p Promotes Functional Recovery and Reduces Pain Hypersensitivity in Mice with Spinal Cord Injury by Targeting Mammalian Sterile 20-like Kinase 1. Neurochem Res 2021; 46:349-357. [PMID: 33211272 DOI: 10.1007/s11064-020-03170-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 10/13/2020] [Accepted: 11/07/2020] [Indexed: 10/22/2022]
Abstract
Currently, there is no cure for spinal cord injury (SCI), a heavy burden on patients physiology and psychology. We found that microRNA-139-5p (miR-139-5p) expression was significantly downregulated in damaged spinal cords in mice. So, we aimed to test the effect of treatment with miR-139-5p on functional recovery and neuropathic pain in mice with SCI and investigate the underlying mechanism. The luciferase reporter assay revealed that miR-139-5p directly targeted mammalian sterile 20-like kinase 1 (Mst1), and miR-139-5p treatment suppressed Mst1 protein expression in damaged spinal cords of mice. Wild-type mice and Mst1(-/-) mice were exposed to SCI and treated with miR-139-5p agomir via intrathecal infusion. Treatment of SCI mice with miR-139-5p accelerated locomotor functional recovery, reduced hypersensitivities to mechanical and thermal stimulations, and promoted neuronal survival in damaged spinal cords. Treatment with miR-139-5p enhanced phosphorylation of adenosine monophosphate-activated protein kinase alpha (AMPKα), improved mitochondrial function, and suppressed NF-κB-related inflammation in damaged spinal cords. Deficiency of Mst1 had similar benefits in mice with SCI. Furthermore, miR-139-5p treatment did not provide further protection in Mst1(-/-) mice against SCI. In conclusion, miR-139-5p treatment enhanced functional recovery and reduced pain hypersensitivity in mice with SCI, possibly through targeting Mst1.
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Affiliation(s)
- Panfeng Wang
- War and Traumat Emergency Centre, Changhai Hospital, Navy Military Medical University, Changhai Road 168, Shanghai, 200433, China
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Sanxiang Road 1055, Suzhou, 215004, China
| | - Yuntong Zhang
- War and Traumat Emergency Centre, Changhai Hospital, Navy Military Medical University, Changhai Road 168, Shanghai, 200433, China
| | - Yan Xia
- War and Traumat Emergency Centre, Changhai Hospital, Navy Military Medical University, Changhai Road 168, Shanghai, 200433, China
| | - Dayuan Xu
- War and Traumat Emergency Centre, Changhai Hospital, Navy Military Medical University, Changhai Road 168, Shanghai, 200433, China
| | - Hongrui Wang
- War and Traumat Emergency Centre, Changhai Hospital, Navy Military Medical University, Changhai Road 168, Shanghai, 200433, China
| | - Dong Liu
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Sanxiang Road 1055, Suzhou, 215004, China
| | - Shuogui Xu
- War and Traumat Emergency Centre, Changhai Hospital, Navy Military Medical University, Changhai Road 168, Shanghai, 200433, China
| | - Yongming Sun
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Sanxiang Road 1055, Suzhou, 215004, China.
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12
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Lee SH, Hadipour-Lakmehsari S, Kim DH, Di Paola M, Kuzmanov U, Shah S, Lee JJH, Kislinger T, Sharma P, Oudit GY, Gramolini AO. Bioinformatic analysis of membrane and associated proteins in murine cardiomyocytes and human myocardium. Sci Data 2020; 7:425. [PMID: 33262348 PMCID: PMC7708497 DOI: 10.1038/s41597-020-00762-1] [Citation(s) in RCA: 5] [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: 02/28/2020] [Accepted: 11/17/2020] [Indexed: 12/13/2022] Open
Abstract
In the current study we examined several proteomic- and RNA-Seq-based datasets of cardiac-enriched, cell-surface and membrane-associated proteins in human fetal and mouse neonatal ventricular cardiomyocytes. By integrating available microarray and tissue expression profiles with MGI phenotypic analysis, we identified 173 membrane-associated proteins that are cardiac-enriched, conserved amongst eukaryotic species, and have not yet been linked to a 'cardiac' Phenotype-Ontology. To highlight the utility of this dataset, we selected several proteins to investigate more carefully, including FAM162A, MCT1, and COX20, to show cardiac enrichment, subcellular distribution and expression patterns in disease. We performed three-dimensional confocal imaging analysis to validate subcellular localization and expression in adult mouse ventricular cardiomyocytes. FAM162A, MCT1, and COX20 were expressed differentially at the transcriptomic and proteomic levels in multiple models of mouse and human heart diseases and may represent potential diagnostic and therapeutic targets for human dilated and ischemic cardiomyopathies. Altogether, we believe this comprehensive cardiomyocyte membrane proteome dataset will prove instrumental to future investigations aimed at characterizing heart disease markers and/or therapeutic targets for heart failure.
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Affiliation(s)
- Shin-Haw Lee
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, Toronto, Ontario, M5G 1M1, Canada
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, M5S 1M8, Canada
| | - Sina Hadipour-Lakmehsari
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, Toronto, Ontario, M5G 1M1, Canada
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, M5S 1M8, Canada
| | - Da Hye Kim
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, Toronto, Ontario, M5G 1M1, Canada
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, M5S 1M8, Canada
| | - Michelle Di Paola
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, Toronto, Ontario, M5G 1M1, Canada
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, M5S 1M8, Canada
| | - Uros Kuzmanov
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, Toronto, Ontario, M5G 1M1, Canada
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, M5S 1M8, Canada
| | - Saumya Shah
- Department of Medicine, University of Alberta, Edmonton, Alberta, T6G 2R3, Canada
- Mazankowski Alberta Heart Institute, Edmonton, Alberta, T6G 2B7, Canada
| | - Joseph Jong-Hwan Lee
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, Toronto, Ontario, M5G 1M1, Canada
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, M5S 1M8, Canada
| | - Thomas Kislinger
- Princess Margaret Cancer Research Centre, Toronto, Ontario, M5G 1L8, Canada
- Department of Medical Biophysics, Faculty of Medicine, University of Toronto, Toronto, Ontario, M5G 1L7, Canada
| | - Parveen Sharma
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, M5S 1M8, Canada
- Department of Cardiovascular & Metabolic Medicine, University of Liverpool, Liverpool, L69 3GE, UK
| | - Gavin Y Oudit
- Department of Medicine, University of Alberta, Edmonton, Alberta, T6G 2R3, Canada
- Mazankowski Alberta Heart Institute, Edmonton, Alberta, T6G 2B7, Canada
| | - Anthony O Gramolini
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, Toronto, Ontario, M5G 1M1, Canada.
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, M5S 1M8, Canada.
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13
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Wang QS, Luo XY, Fu H, Luo Q, Wang MQ, Zou DY. MiR-139 protects against oxygen-glucose deprivation/reoxygenation (OGD/R)-induced nerve injury through targeting c-Jun to inhibit NLRP3 inflammasome activation. J Stroke Cerebrovasc Dis 2020; 29:105037. [PMID: 32807449 DOI: 10.1016/j.jstrokecerebrovasdis.2020.105037] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 05/27/2020] [Accepted: 06/05/2020] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Cerebral ischemia/reperfusion (I/R) injury after ischemic stroke is usually accompanied with the activation of inflammasome which seriously impairs neurological function. MiR-139 has been reported to be associated with inflammatory regulation in multiple diseases. However, its effect and mechanism on inflammation regulation after cerebral I/R injury are still poorly understood. METHODS An in vitro model of cerebral I/R injury was constructed with oxygen-glucose deprivation/reoxygenation (OGD/R) treatment. TargetScan bioinformatics analysis and dual luciferase reporter assay were utilized to confirm the targeted relationship between miR-139 and c-Jun. Cell pyroptosis was verified by flow cytometry and Caspase-1 Detection Kit. qRT-PCR assay was performed to detect the expression levels of miR-139, c-Jun, NLRP3 and ASC. Western blotting was applied to measure the protein levels of c-Jun and pyroptosis-related markers NLRP3, ASC, caspase-1, GSDMDNterm. The ELISA assay was applied to measure the release of IL-1β, IL-18 and LDH. RESULTS MiR-139 was significantly downregulated whereas c-Jun was obviously upregulated after OGD/R treatment. TargetScan analysis predicted that c-Jun was a potential target of miR-139, which was verified by the dual-luciferase reporter assay. Also, overexpression of miR-139 repressed c-Jun expression. Furthermore, miR-139 inhibited OGD/R-induced cell pyroptosis and the upregulation of NLRP3, caspase-1, ASC, GSDMDNterm, and the release of IL-1β, IL-18 and LDH, while miR-139 inhibition exerted the opposite effects. However, overexpression of c-Jun aggravated OGD/R-induced nerve injury and partly abolished the neuroprotective effect of miR-139. CONCLUSION Upregulation of miR-139 exerted neuroprotection against OGD/R-induced nerve injury by negatively regulating c-Jun/NLRP3 inflammasome signaling. This study offered insights for providing potential therapeutic targets for treating cerebral I/R injury.
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Affiliation(s)
- Qiao-Sheng Wang
- Department of Critical Care Medicine, The First Affiliated Hospital, University of South China, Hengyang 421001, Hunan Province, PR China.
| | - Xiao-Yan Luo
- Department of Medical service, Affiliated Nanhua Hospital, University of South China, Hengyang 421001, Hunan Province, PR China.
| | - Hui Fu
- Department of Critical Care Medicine, The First Affiliated Hospital, University of South China, Hengyang 421001, Hunan Province, PR China.
| | - Qiong Luo
- Department of Critical Care Medicine, The First Affiliated Hospital, University of South China, Hengyang 421001, Hunan Province, PR China.
| | - Mei-Qiu Wang
- Department of Critical Care Medicine, The First Affiliated Hospital, University of South China, Hengyang 421001, Hunan Province, PR China; Graduate School of University of South China, Hengyang 421101, Hunan Province, PR China.
| | - Dian-Yi Zou
- Department of Critical Care Medicine, The First Affiliated Hospital, University of South China, Hengyang 421001, Hunan Province, PR China; Graduate School of University of South China, Hengyang 421101, Hunan Province, PR China.
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14
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Xin R, Chen Z, Fu J, Shen F, Zhu Q, Huang F. Xanomeline Protects Cortical Cells From Oxygen-Glucose Deprivation via Inhibiting Oxidative Stress and Apoptosis. Front Physiol 2020; 11:656. [PMID: 32595528 PMCID: PMC7303960 DOI: 10.3389/fphys.2020.00656] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 05/22/2020] [Indexed: 12/14/2022] Open
Abstract
Xanomeline, a muscarinic acetylcholine receptor agonist, is one of the first compounds that was found to be effective in the treatment of schizophrenics and attenuating behavioral disturbances of patients with Alzheimer's disease (AD). However, its role in ischemia-induced injury due to oxygen and glucose deprivation (OGD) remains unclear. Primary rat neuronal cells were exposed to OGD and treated with xanomeline. The effects of xanomeline on apoptosis, cell viability, lactate dehydrogenase (LDH) levels, and reactive oxygen species (ROS) were determined using an Annexin V Apoptosis Detection Kit, a non-radioactive cell counting kit-8 (CCK-8) assay, colorimetric LDH cytotoxicity assay kit, and a dichloro-dihydro-fluorescein diacetate (DCFH-DA) assay, respectively, and the expressions of Sirtuin 1, haem oxygenase-1 (HO-1), B-cell lymphoma 2 (Bcl-2), poly ADP-ribose polymerase (PARP), and hypoxia-inducible factor α (HIF-1α) as well as the level of phosphorylated kinase B (p-Akt) were determined by Western blotting. Compared with the control, xanomeline pretreatment increased the viability of isolated cortical neurons and decreased the LDH release induced by OGD. Compared with OGD-treated cells, xanomeline inhibited apoptosis, reduced ROS production, attenuated the OGD-induced HIF-1α increase and partially reversed the reduction of HO-1, Sirtuin-1, Bcl-2, PARP, and p-Akt induced by OGD. In conclusion, xanomeline treatment protects cortical neuronal cells possibly through the inhibition of apoptosis after OGD.
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Affiliation(s)
- Rujuan Xin
- Department of Pharmacy, Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai, China.,Department of Pharmacy, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Zhongjian Chen
- Department of Pharmacy, Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jin Fu
- Department of Pharmacy, Ninghai First Hospital, Zhejiang, China
| | - Fuming Shen
- Department of Pharmacy, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Quangang Zhu
- Department of Pharmacy, Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai, China
| | - Fang Huang
- Department of Pharmacy, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
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15
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Bustelo M, Barkhuizen M, van den Hove DLA, Steinbusch HWM, Bruno MA, Loidl CF, Gavilanes AWD. Clinical Implications of Epigenetic Dysregulation in Perinatal Hypoxic-Ischemic Brain Damage. Front Neurol 2020; 11:483. [PMID: 32582011 PMCID: PMC7296108 DOI: 10.3389/fneur.2020.00483] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 05/04/2020] [Indexed: 12/18/2022] Open
Abstract
Placental and fetal hypoxia caused by perinatal hypoxic-ischemic events are major causes of stillbirth, neonatal morbidity, and long-term neurological sequelae among surviving neonates. Brain hypoxia and associated pathological processes such as excitotoxicity, apoptosis, necrosis, and inflammation, are associated with lasting disruptions in epigenetic control of gene expression contributing to neurological dysfunction. Recent studies have pointed to DNA (de)methylation, histone modifications, and non-coding RNAs as crucial components of hypoxic-ischemic encephalopathy (HIE). The understanding of epigenetic dysregulation in HIE is essential in the development of new clinical interventions for perinatal HIE. Here, we summarize our current understanding of epigenetic mechanisms underlying the molecular pathology of HI brain damage and its clinical implications in terms of new diagnostic, prognostic, and therapeutic tools.
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Affiliation(s)
- Martín Bustelo
- Department of Pediatrics, Maastricht University Medical Center (MUMC), Maastricht, Netherlands.,Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience (MHeNs), Maastricht University, Maastricht, Netherlands.,Instituto de Ciencias Biomédicas, Facultad de Ciencias Médicas, Universidad Católica de Cuyo, San Juan, Argentina.,Laboratorio de Neuropatología Experimental, Facultad de Medicina, Instituto de Biología Celular y Neurociencias "Prof. E. De Robertis" (IBCN), Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
| | - Melinda Barkhuizen
- Department of Pediatrics, Maastricht University Medical Center (MUMC), Maastricht, Netherlands
| | - Daniel L A van den Hove
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience (MHeNs), Maastricht University, Maastricht, Netherlands.,Department of Psychiatry, Psychosomatics and Psychotherapy, University of Würzburg, Würzburg, Germany
| | - Harry Wilhelm M Steinbusch
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience (MHeNs), Maastricht University, Maastricht, Netherlands
| | - Martín A Bruno
- Instituto de Ciencias Biomédicas, Facultad de Ciencias Médicas, Universidad Católica de Cuyo, San Juan, Argentina
| | - C Fabián Loidl
- Instituto de Ciencias Biomédicas, Facultad de Ciencias Médicas, Universidad Católica de Cuyo, San Juan, Argentina.,Laboratorio de Neuropatología Experimental, Facultad de Medicina, Instituto de Biología Celular y Neurociencias "Prof. E. De Robertis" (IBCN), Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
| | - Antonio W Danilo Gavilanes
- Department of Pediatrics, Maastricht University Medical Center (MUMC), Maastricht, Netherlands.,Facultad de Ciencias Médicas, Instituto de Investigación e Innovación de Salud Integral, Universidad Católica de Santiago de Guayaquil, Guayaquil, Ecuador
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16
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Li H, Xu LX, Yu J, Tan L, Miao P, Yang X, Tian Q, Li M, Feng CX, Yang Y, Sha N, Feng X, Sun B, Gong M, Ding X. The role of a lncRNA (TCONS_00044595) in regulating pineal CLOCK expression after neonatal hypoxia-ischemia brain injury. Biochem Biophys Res Commun 2020; 528:1-6. [PMID: 32448507 DOI: 10.1016/j.bbrc.2020.05.047] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 05/07/2020] [Indexed: 11/28/2022]
Abstract
A common, yet often neglectable, feature of neonatal hypoxic-ischemic brain damage (HIBD) is circadian rhythm disorders resulted from pineal gland dysfunction. Our previous work demonstrated that miRNAs play an important role in regulating key circadian genes in the pineal gland post HIBD [5,21]. In current study, we sought out to extend our investigation by profiling expression changes of pineal long non-coding RNAs (lncRNAs) upon neonatal HIBD using RNA-Seq. After validating lncRNA changes, we showed that one lncRNA: TCONS_00044595 is highly enriched in the pineal gland and exhibits a circadian expression pattern. Next, we performed bioinformatic analysis to predict the lncRNA-miRNA regulatory network and identified 168 miRNAs that potentially targetlncRNA TCONS_00044595. We further validated the bona fide interaction between one candidate miRNA: miR-182, a known factor to regulate pineal Clock expression, and lncRNA TCONS_00044595. Finally, we showed that suppression of lncRNA TCONS_00044595 alleviated the CLOCK activation both in the cultured pinealocytes under OGD conditions and in the pineal gland post HIBD in vivo. Our study thus shed light into novel mechanisms of pathophysiology of pineal dysfunction post neonatal HIBD.
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Affiliation(s)
- Hong Li
- Soochow Key Laboratory of Prevention and Treatment of Child Brain Injury, Children's Hospital of Soochow University, Suzhou, China
| | - Li-Xiao Xu
- Pediatrics Research Institute, Children's Hospital of Soochow University, Suzhou, China
| | - Jian Yu
- Soochow Key Laboratory of Prevention and Treatment of Child Brain Injury, Children's Hospital of Soochow University, Suzhou, China
| | - Lanlan Tan
- Soochow Key Laboratory of Prevention and Treatment of Child Brain Injury, Children's Hospital of Soochow University, Suzhou, China
| | - Po Miao
- Soochow Key Laboratory of Prevention and Treatment of Child Brain Injury, Children's Hospital of Soochow University, Suzhou, China
| | - Xiaofeng Yang
- Soochow Key Laboratory of Prevention and Treatment of Child Brain Injury, Children's Hospital of Soochow University, Suzhou, China
| | - Qiuyan Tian
- Pediatrics Research Institute, Children's Hospital of Soochow University, Suzhou, China
| | - Mei Li
- Pediatrics Research Institute, Children's Hospital of Soochow University, Suzhou, China
| | - Chen-Xi Feng
- Pediatrics Research Institute, Children's Hospital of Soochow University, Suzhou, China
| | - Yuanyuan Yang
- Department of Pediatrics, The First Affiliated Hospital of Soochow University, (Dushuhu Branch), Suzhou, China
| | - Ning Sha
- Department of Pediatrics, Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, China
| | - Xing Feng
- Soochow Key Laboratory of Prevention and Treatment of Child Brain Injury, Children's Hospital of Soochow University, Suzhou, China
| | - Bin Sun
- Soochow Key Laboratory of Prevention and Treatment of Child Brain Injury, Children's Hospital of Soochow University, Suzhou, China
| | - Min Gong
- Soochow Key Laboratory of Prevention and Treatment of Child Brain Injury, Children's Hospital of Soochow University, Suzhou, China
| | - Xin Ding
- Soochow Key Laboratory of Prevention and Treatment of Child Brain Injury, Children's Hospital of Soochow University, Suzhou, China.
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17
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Chen YM, He XZ, Wang SM, Xia Y. δ-Opioid Receptors, microRNAs, and Neuroinflammation in Cerebral Ischemia/Hypoxia. Front Immunol 2020; 11:421. [PMID: 32269564 PMCID: PMC7109255 DOI: 10.3389/fimmu.2020.00421] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 02/24/2020] [Indexed: 12/26/2022] Open
Abstract
Hypoxia and ischemia are the main underlying pathogenesis of stroke and other neurological disorders. Cerebral hypoxia and/or ischemia (e.g., stroke) can lead to neuronal injury/death and eventually cause serious neurological disorders or even death in the patients. Despite knowing these serious consequences, there are limited neuroprotective strategies against hypoxic and ischemic insults in clinical settings. Recent studies indicate that microRNAs (miRNAs) are of great importance in regulating cerebral responses to hypoxic/ischemic stress in addition to the neuroprotective effect of the δ-opioid receptor (DOR). Moreover, new discovery shows that DOR can regulate miRNA expression and inhibit inflammatory responses to hypoxia/ischemia. We, therefore, summarize available data in current literature regarding the role of DOR and miRNAs in regulating the neuroinflammatory responses in this article. In particular, we focus on microglia activation, cytokine production, and the relevant signaling pathways triggered by cerebral hypoxia/ischemia. The intent of this review article is to provide a novel clue for developing new strategies against neuroinflammatory injury resulting from cerebral hypoxia/ischemia.
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Affiliation(s)
- Yi-Meng Chen
- Department of Urology, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Xiao-Zhou He
- Department of Urology, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Shu-Ming Wang
- Department of Anesthesiology, University of Connecticut, Mansfield, CT, United States
| | - Ying Xia
- Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, Fudan University, Shanghai, China
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18
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Inhibition of miR-200b-3p alleviates hypoxia-ischemic brain damage via targeting Slit2 in neonatal rats. Biochem Biophys Res Commun 2020; 523:931-938. [PMID: 31964527 DOI: 10.1016/j.bbrc.2020.01.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 01/02/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND Brain damage in premature infants often occurs in very low birth weight infants (VLBW) as a result of hypoxia-ischemia and can lead to cognitive impairment and movement disorders. Many miRNAs have been demonstrated to participate in hypoxia-ischemic brain damage (HIBD). This study was designed to investigate the roles of miR-200b-3p in brain damage of neonatal rats induced by hypoxia-ischemia. METHODS AND RESULTS Three-day-old SD rats were used to establish the model of hypoxia-ischemic brain injury mimicking premature infants. RT-qPCR showed that miR-200b-3p was up-regulated in rat brains at the early stage following hypoxia-ischemic treatment. Bioinformatics analysis identified that Slit2 is a target gene of miR-200b-3p and luciferase reporter gene assay confirmed that miR-200b-3p can interact with and target Slit2 mRNA. Inhibition of miR-200b-3p by antagomir increased Slit2 expression at both the mRNA and protein levels in rat brains. TUNEL assay and transmission electron microscopy (TEM) analysis showed decreased numbers of apoptotic neurons in the hypoxia-ischemia-treated animals as a result of administration of miR-200b-3p antagomir. Administration of miR-200b-3p antagomir attenuated spatial and learning memory loss in the animals induced by hypoxia-ischemia as compared to controls. CONCLUSION Our study has demonstrated that Slit2 is a target gene of miR-200b-3p and that the hypoxia-ischemic brain damage in neonatal rats was alleviated by inhibiting miR-200b-3p via Slit2. miR-200b-3p may be a potential therapeutic target of HIBD for further investigation.
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19
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Lin D, Cui B, Ma J, Ren J. MiR-183-5p protects rat hearts against myocardial ischemia/reperfusion injury through targeting VDAC1. Biofactors 2020; 46:83-93. [PMID: 31618500 DOI: 10.1002/biof.1571] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 09/05/2019] [Indexed: 12/17/2022]
Abstract
MicroRNAs have been reported to be implicated in myocardial ischemia/reperfusion (I/R) injury. The purpose of this study was to investigate the effect of miR-183-5p on I/R injury. Overexpression of miR-183-5p by agomiR transfection alleviated cardiac dysfunction and significantly reduced the infarct size in rats with myocardial I/R. MiR-183-5p also alleviated myocardial apoptosis with reduced apoptotic cells and lower levels of apoptosis associated proteins. in vitro experiments were conducted on rat H9c2 cells treated with anoxia/reoxygenation (A/R). Annexin V/propidium iodide (PI) staining and flow cytometry reported that the ratio of apoptotic cells decreased by miR-183-5p transfection before A/R treatment. Moreover, according to binding sequence prediction and Dual luciferase reporter assay, we explored that voltage-dependent anion channel 1 (VDAC1), which aggravates myocardial injury and apoptosis reported in our former research, was a target of miR-183-5p. In conclusion, miR-183-5p can efficiently attenuate I/R injury and miR-183-5p may exert its effect through repressing VDAC1 expression.
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Affiliation(s)
- Duomao Lin
- Center for Anesthesiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Boqun Cui
- Center for Anesthesiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Jun Ma
- Center for Anesthesiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Jiayue Ren
- Center for Anesthesiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
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20
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Abstract
OBJECTIVE Individuals with HIV suffer a higher burden of cardiovascular diseases. Traditional cardiovascular risk scores consistently underestimate cardiovascular risk in this population. Subsets of microRNAs (miRNAs) are differentially expressed among individuals with cardiovascular disease and individuals infected with HIV. However, no study has clarified whether specific miRNAs may be biomarkers for cardiovascular disease in individuals with HIV. DESIGN/METHODS We compared the miRNA expression profiles of 34 HIV-positive individuals who had experienced clinically adjudicated type I myocardial infarctions (MI) with the profiles of 76 HIV-positive controls matched by traditional cardiovascular risk factors and HIV-specific measures. Using the elastic net algorithm, we selected miRNAs most strongly associated with incident MI and then used conditional Cox proportional hazards regression and cross-validation to evaluate miRNAs and their association with incident MI. We evaluated whether miRNA markers would improve risk classification relative to the Framingham Risk Score. RESULTS Higher miR-125a-5p and miR-139-5p expression levels were each associated with increased risk of developing MI after adjustment for Framingham Risk Score and HIV-related factors (hazard ratio 2.43, P = 0.018; hazard ratio 2.13, P = 0.048, respectively). Compared with the Framingham Risk Score alone, adding expression levels of miR-125a-5p or miR-139-5p resulted in an integrated discrimination improvement of 10.1 or 5.8%, respectively. CONCLUSION MiR-125a-5p and miR-139-5p, transcripts known to be differentially expressed in HIV-positive individuals, may serve as unique biomarkers predictive of cardiovascular disease in these patients and may help clarify processes because of HIV infection that contribute to cardiovascular disorders in this population.
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21
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Wang L, Song L, Chen X, Suo J, Ma Y, Shi J, Liu K, Chen G. microRNA-139-5p confers sensitivity to antiepileptic drugs in refractory epilepsy by inhibition of MRP1. CNS Neurosci Ther 2019; 26:465-474. [PMID: 31750616 PMCID: PMC7080432 DOI: 10.1111/cns.13268] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 10/25/2019] [Accepted: 10/31/2019] [Indexed: 12/12/2022] Open
Abstract
Aim Drug resistance is an intractable issue urgently needed to be overcome for improving efficiency of antiepileptic drugs in treating refractory epilepsy. microRNAs (miRNAs) have been proved as key regulators and therapeutic targets in epilepsy. Accordingly, the aim of the present study was to identify a novel differentially expressed miRNA which could improve the efficiency of antiepileptic drugs during the treatment of refractory epilepsy. Methods and Results Serum samples were collected from children with refractory epilepsy. An in vivo refractory epilepsy model was developed in SD rats by electrical amygdala kindling. We identified that miR‐139‐5p was decreased and multidrug resistance‐associated protein 1 (MRP1) was remarkably upregulated in the serum samples from children with refractory epilepsy and the brain tissues from rat models of refractory epilepsy. After phenobarbitone injection in rat models of refractory epilepsy, the after discharging threshold in kindled amygdala was detected to screen out drug‐resistant rats. Dual‐luciferase reporter gene assay demonstrated that MRP1 was a target of miR‐139‐5p. In order to evaluate the effect of miR‐139‐5p/MRP1 axis on drug resistance of refractory epilepsy, we transfected plasmids into the hippocampus of drug‐resistant rats to alter the expression of miR‐139‐5p and MRP1. TUNEL staining and Nissl staining showed that miR‐139‐5p overexpression or MRP1 downregulation could reduce the apoptosis and promote survival of neurons, accompanied by alleviated neuronal damage. Conclusion Collectively, these results suggest an important role of miR‐139‐5p/MRP1 axis in reducing the resistance of refractory epilepsy to antiepileptic drugs.
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Affiliation(s)
- Li Wang
- Department of Neurology, Zhengzhou University Affiliated Children's Hospital (Zhengzhou Children's Hospital), Zhengzhou, China
| | - Lifang Song
- Department of Neurology, Zhengzhou University Affiliated Children's Hospital (Zhengzhou Children's Hospital), Zhengzhou, China
| | - Xiaoyi Chen
- Department of Neurology, Zhengzhou University Affiliated Children's Hospital (Zhengzhou Children's Hospital), Zhengzhou, China
| | - Junfang Suo
- Department of Neurology, Zhengzhou University Affiliated Children's Hospital (Zhengzhou Children's Hospital), Zhengzhou, China
| | - Yanli Ma
- Department of Neurology, Zhengzhou University Affiliated Children's Hospital (Zhengzhou Children's Hospital), Zhengzhou, China
| | - Jinghe Shi
- Department of Neurology, Zhengzhou University Affiliated Children's Hospital (Zhengzhou Children's Hospital), Zhengzhou, China
| | - Kai Liu
- Department of Neurology, Zhengzhou University Affiliated Children's Hospital (Zhengzhou Children's Hospital), Zhengzhou, China
| | - Guohong Chen
- Department of Neurology, Zhengzhou University Affiliated Children's Hospital (Zhengzhou Children's Hospital), Zhengzhou, China
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22
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Gareev IF, Novikova LB, Beylerli OA. Application of microRNA in the therapy of ischemic stroke. КАРДИОВАСКУЛЯРНАЯ ТЕРАПИЯ И ПРОФИЛАКТИКА 2019. [DOI: 10.15829/1728-8800-2019-5-66-73] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Suppression of PDGF induces neuronal apoptosis after neonatal cerebral hypoxia and ischemia by inhibiting P-PI3K and P-AKT signaling pathways. Brain Res 2019; 1719:77-88. [PMID: 31082354 DOI: 10.1016/j.brainres.2019.05.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 05/08/2019] [Accepted: 05/09/2019] [Indexed: 02/05/2023]
Abstract
Neonatal hypoxic-ischemic encephalopathy (HIE) always results in severe neurologic dysfunction, nevertheless effective treatments are limited and the underlying mechanism also remains unclear. In this study, we firstly established the neonatal HIE model in the postnatal day 7 SD rats, Zea-Longa score and TTC staining were employed to assess the neurological behavior and infarct volume of the brain after cerebral hypoxia-ischemia (HI). Afterwards, protein chip was adopted to detect the differential proteins in the right cortex, hippocampus and lung, ultimately, PDGF was noticed. Then, immunohistochemistry, immunofluorescence double staining of NeuN/PDGF, and western blot were used to validate the expression level of PDGF in the cortex and hippocampus at 6 hours (h), 12 h and 24 h after HI. To determine the role of PDGF, the primary cortical neurons were prepared and performed PDGF shRNA administration. The results showed that HIE induced a severe behavioral dysfunction and brain infarction in neonatal rats, and the expression of PDGF in right cortex and hippocampus was remarkably increased after HI. Whereas, suppressing PDGF resulted in a significant loss of neurons and inhibition of neurite growth. Moreover, the protein level of P-PI3K and P-AKT signaling pathways were largely decreased following PDGF-shRNA application in the cortical neurons. In conclusion, PDGF suppression aggravated neuronal dysfunction, and the underlying mechanism is associated with inhibiting the phosphorylation of P-PI3K and P-AKT. Together, PDGF regulating PI3K and AKT may be an important panel in HIE events and therefore may provide possible strategy for the treatment of HIE in future clinic trail.
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Ye Y, Hu Q, Chen H, Liang K, Yuan Y, Xiang Y, Ruan H, Zhang Z, Song A, Zhang H, Liu L, Diao L, Lou Y, Zhou B, Wang L, Zhou S, Gao J, Jonasch E, Lin SH, Xia Y, Lin C, Yang L, Mills GB, Liang H, Han L. Characterization of Hypoxia-associated Molecular Features to Aid Hypoxia-Targeted Therapy. Nat Metab 2019; 1:431-444. [PMID: 31984309 PMCID: PMC6980239 DOI: 10.1038/s42255-019-0045-8] [Citation(s) in RCA: 124] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 02/14/2019] [Indexed: 12/11/2022]
Abstract
Tumor hypoxia is a major contributor to resistance to anti-cancer therapies. Given that the results of hypoxia-targeted therapy trials have been disappointing, a more personalized approach may be needed. Here we characterize multi-OMIC molecular features associated with tumor hypoxia and identify molecular alterations that correlate with both drug-resistant and drug-sensitive responses to anti-cancer drugs. Based on a well-established hypoxia gene expression signature, we classify about 10,000 tumor samples into hypoxia score-high and score-low groups across different cancer types from The Cancer Genome Atlas and demonstrate their prognostic associations. We then identify various types of molecular features associated with hypoxia status that correlate with drug resistance but, in some cases, also with drug sensitivity, contrasting the conventional view that hypoxia confers drug resistance. We further show that 110 out of 121 (90.9%) clinically actionable genes can be affected by hypoxia status and experimentally validate the predicted effects of hypoxia on the response to several drugs in cultured cells. Our study provides a comprehensive molecular-level understanding of tumor hypoxia and may have practical implications for clinical cancer therapy.
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Affiliation(s)
- Youqiong Ye
- Department of Biochemistry and Molecular Biology, The University of Texas Health Science Center at Houston-McGovern Medical School, Houston, TX, USA
| | - Qingsong Hu
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Hu Chen
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Graduate Program in Quantitative and Computational Biosciences, Baylor College of Medicine, Houston, TX, USA
| | - Ke Liang
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Yuan Yuan
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Yu Xiang
- Department of Biochemistry and Molecular Biology, The University of Texas Health Science Center at Houston-McGovern Medical School, Houston, TX, USA
| | - Hang Ruan
- Department of Biochemistry and Molecular Biology, The University of Texas Health Science Center at Houston-McGovern Medical School, Houston, TX, USA
| | - Zhao Zhang
- Department of Biochemistry and Molecular Biology, The University of Texas Health Science Center at Houston-McGovern Medical School, Houston, TX, USA
| | - Anren Song
- Department of Biochemistry and Molecular Biology, The University of Texas Health Science Center at Houston-McGovern Medical School, Houston, TX, USA
| | - Huiwen Zhang
- Department of Biochemistry and Molecular Biology, The University of Texas Health Science Center at Houston-McGovern Medical School, Houston, TX, USA
| | - Lingxiang Liu
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Lixia Diao
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Yanyan Lou
- Division of Hematology and Oncology, Mayo Clinic, Jacksonville, FL, USA
| | - Bingying Zhou
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Li Wang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shengtao Zhou
- Department of Obstetrics and Gynecology, Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE and State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China
| | - Jianjun Gao
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Eric Jonasch
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Steven H Lin
- Department of Radiation Oncology, Division of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Yang Xia
- Department of Biochemistry and Molecular Biology, The University of Texas Health Science Center at Houston-McGovern Medical School, Houston, TX, USA
- MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA
| | - Chunru Lin
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA
| | - Liuqing Yang
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
- MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA.
| | - Gordon B Mills
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
- Knight Cancer Institute, Oregon Health and Science University, Portland, OR, USA.
| | - Han Liang
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
- Graduate Program in Quantitative and Computational Biosciences, Baylor College of Medicine, Houston, TX, USA.
- MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA.
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | - Leng Han
- Department of Biochemistry and Molecular Biology, The University of Texas Health Science Center at Houston-McGovern Medical School, Houston, TX, USA.
- MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA.
- Center for Precision Health, The University of Texas Health Science Center at Houston, Houston, TX, USA.
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25
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Ponnusamy V, Yip PK. The role of microRNAs in newborn brain development and hypoxic ischaemic encephalopathy. Neuropharmacology 2019; 149:55-65. [PMID: 30716413 DOI: 10.1016/j.neuropharm.2018.11.041] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 11/28/2018] [Accepted: 11/30/2018] [Indexed: 02/08/2023]
Abstract
Neonates can develop hypoxic-ischaemic encephalopathy (HIE) due to lack of blood supply or oxygen, resulting in a major cause of death and disability among term newborns. However, current definitive treatment of therapeutic hypothermia, will only benefit one out of nine babies. Furthermore, the mechanisms of HIE and therapeutic hypothermia are not fully understood. Recently, microRNAs (miRNAs) have become of interest to many researchers due to their important role in post-transcriptional control and deep evolutionary history. Despite this, role of miRNAs in newborns with HIE remains largely unknown due to limited research in this field. Therefore, this review aims to understand the role of miRNAs in normal brain development and HIE pathophysiology with reliance on extrapolated data from other diseases, ages and species due to current limited data. This will provide us with an overview of how miRNAs in normal brain development changes after HIE. Furthermore, it will indicate how miRNAs are affected specifically or globally by the various pathophysiological events. In addition, we discuss about how drugs and commercially available agents can specifically target certain miRNAs as a mechanism of action and potential safety issue with off-target effects. Improving our understanding of the role of miRNAs on the cellular response after HIE would enhance the success of effective diagnosis, prognosis, and treatment of newborns with HIE.
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Affiliation(s)
- Vennila Ponnusamy
- Centre of Genomics and Child Health, Blizard Institute, Barts and London School of Medicine and Dentistry, Queen Mary University of London, UK; Neonatal Intensive Care Unit, Ashford and St. Peter's Hospitals NHS Trust, Chertsey, UK.
| | - Ping K Yip
- Center of Neuroscience, Surgery and Trauma, Blizard Institute, Barts and London School of Medicine and Dentistry, Queen Mary University of London, UK.
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26
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Shao M, Shen Y, Sun H, Meng D, Huo W, Qi X. Protectiveness of Artesunate Given Prior Ischemic Cerebral Infarction Is Mediated by Increased Autophagy. Front Neurol 2018; 9:634. [PMID: 30174640 PMCID: PMC6107698 DOI: 10.3389/fneur.2018.00634] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Accepted: 07/13/2018] [Indexed: 01/20/2023] Open
Abstract
Background: Ischemic cerebral infarction is a severe clinical condition that can cause serious mortality. Artesunate, an anti-malarial drug that is widely used in cancer treatment, is known to facilitate accelerated cell apoptosis. The aim of this study is to explore the possible neuroprotective effects of artesunate on hypoxic-ischemic cells in rats. Methods: Middle cerebral artery occlusion (MCAO) rats were treated with artesunate in different doses to observe their survival rate. Primary hippocampal neurons were deprived of oxygen-glucose to induce ischemia symptoms. Western blot was performed to determine the protein expressions of p-mTOR, Beclin-1, and Mcl-1. A five-point scale was used to detect neurological deficit. Cell apoptosis was measured using a TUNEL assay. Results: Artesunate supplementation protected MCAO rats from death and ameliorated brain injury among them. Artesunate administration decreased the expression of p-mTOR, increased the expressions of Beclin-1 and Mcl-1, and decreased the activity of caspase-3 in both the rats' ischemia cerebral cortices and their primary ischemia hippocampal neurons when compared with artesunate-absent ischemic brains and cells. The neuroprotective effects of artesunate were abolished by either leucine (LEU) or 3-MA, while the effects of rapamycin were reversed by 3-MA. In vivo experiments verified the protective effects of artesunate on brain-infarct rats. Conclusion: The results indicate the protectiveness of artesunate against ischemic cerebral infarction, whereas the protectiveness might increase autophagy through regulating the activity of mTOR.
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Affiliation(s)
- Ming Shao
- Department of Orthopedics, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yue Shen
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Hongjing Sun
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Delong Meng
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Wei Huo
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xu Qi
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
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Abstract
Central nervous system (CNS) injuries, such as stroke, traumatic brain injury (TBI) and spinal cord injury (SCI), are important causes of death and long-term disability worldwide. MicroRNA (miRNA), small non-coding RNA molecules that negatively regulate gene expression, can serve as diagnostic biomarkers and are emerging as novel therapeutic targets for CNS injuries. MiRNA-based therapeutics include miRNA mimics and inhibitors (antagomiRs) to respectively decrease and increase the expression of target genes. In this review, we summarize current miRNA-based therapeutic applications in stroke, TBI and SCI. Administration methods, time windows and dosage for effective delivery of miRNA-based drugs into CNS are discussed. The underlying mechanisms of miRNA-based therapeutics are reviewed including oxidative stress, inflammation, apoptosis, blood-brain barrier protection, angiogenesis and neurogenesis. Pharmacological agents that protect against CNS injuries by targeting specific miRNAs are presented along with the challenges and therapeutic potential of miRNA-based therapies.
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Affiliation(s)
- Ping Sun
- Department of Neurology, Pittsburgh Institute of Brain Disorders & Recovery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Da Zhi Liu
- Department of Neurology and the M.I.N.D. Institute, University of California at Davis, Sacramento, CA, USA
| | - Glen C Jickling
- Department of Neurology, University of Alberta, Edmonton, Alberta, Canada
| | - Frank R Sharp
- Department of Neurology and the M.I.N.D. Institute, University of California at Davis, Sacramento, CA, USA
| | - Ke-Jie Yin
- Department of Neurology, Pittsburgh Institute of Brain Disorders & Recovery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Ke-Jie Yin, Department of Neurology, Pittsburgh Institute of Brain Disorders & Recovery, University of Pittsburgh School of Medicine, 200 Lothrop Street, BST S514, Pittsburgh, PA 15213, USA. Da Zhi Liu, Department of Neurology, University of California at Davis, Sacramento, CA 95817, USA.
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28
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Wang C, Song JX, Lv QS, Pan H, Zhang CN, Wu J, Fan CL, Ma LJ, Liu T, Wang JJ. Distinctive expression signatures of serum microRNAs in ischaemic stroke and transient ischaemic attack patients. Thromb Haemost 2017; 117:992-1001. [DOI: 10.1160/th16-08-0606] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 02/09/2017] [Indexed: 12/20/2022]
Abstract
SummaryCirculating microRNAs (miRNAs) have recently emerged as promising biomarkers for ischaemic stroke (IS). However, the expression patterns of specific miRNAs in transient ischaemic attack (TIA) patients have not been investigated. Their predictive values for the presence of IS and TIA and their relationships to the neurological deficit severity of IS and the subsequent stroke risk after TIA remain unclear exactly. In this study, 754 miRNAs were initially screened by the TaqMan Low Density Array (TLDA) in two pooled serum samples from 50 IS patients and 50 controls. Markedly altered miRNAs were subsequently validated by individual quantitative reverse-transcription PCR (qRT-PCR) assays first in the same cohort of TLDA and further confirmed in another larger cohort including 177 IS, 81 TIA patients and 42 controls. Consequently, TLDA screening showed that 71 miRNAs were up-regulated and 49 miRNAs were down-regulated in IS patients. QRT-PCR validation confirmed that serum levels of miR-23b-3p, miR-29b-3p, miR-181a-5p and miR-21–5p were significantly increased in IS patients. Strikingly, serum levels of miR-23b-3p, miR-29b-3p and miR-181a-5p were also significantly elevated in TIA patients. Furthermore, up-regulated miR-23b-3p, miR-29b-3p and miR-21–5p could clearly differentiate between IS and TIA patients. Logistic regression and receiver-operating characteristic curve analyses demonstrated that these altered miRNAs may function as predictive and discriminative biomarkers for IS and TIA, and their distinctive expression signatures may contribute to assessing neurological deficit severity of IS and subsequent stroke risk after TIA.Supplementary Material to this article is available online at www.thrombosis-online.com.
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29
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Rahimian P, He JJ. HIV/neuroAIDS biomarkers. Prog Neurobiol 2017; 157:117-132. [PMID: 27084354 PMCID: PMC5705228 DOI: 10.1016/j.pneurobio.2016.04.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 04/01/2016] [Accepted: 04/08/2016] [Indexed: 12/12/2022]
Abstract
HIV infection often causes neurological symptoms including cognitive and motor dysfunction, which have been collectively termed HIV/neuroAIDS. Neuropsychological assessment and clinical symptoms have been the primary diagnostic criteria for HIV/neuroAIDS, even for the mild cognitive and motor disorder, the most prevalent form of HIV/neuroAIDS in the era of combination antiretroviral therapy. Those performance-based assessments and symptoms are generally descriptive and do not have the sensitivity and specificity to monitor the diagnosis, progression, and treatment response of the disease when compared to objective and quantitative laboratory-based biological markers, or biomarkers. In addition, effects of demographics and comorbidities such as substance abuse, psychiatric disease, nutritional deficiencies, and co-infection on HIV/neuroAIDS could be more readily determined using biomarkers than using neuropsychological assessment and clinical symptoms. Thus, there have been great efforts in identification of HIV/neuroAIDS biomarkers over the past two decades. The need for reliable biomarkers of HIV/neuroAIDS is expected to increase as the HIV-infected population ages and their vulnerability to neurodegenerative diseases, particularly Alzheimer's disease increases. Currently, three classes of HIV/neuroAIDS biomarkers are being pursued to establish objective laboratory-based definitions of HIV-associated neurologic injury: cerebrospinal fluid biomarkers, blood biomarkers, and neuroimaging biomarkers. In this review, we will focus on the current knowledge in the field of HIV/neuroAIDS biomarker discovery.
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Affiliation(s)
- Pejman Rahimian
- Department of Cell Biology and Immunology, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, Fort Worth, TX 76107, United States
| | - Johnny J He
- Department of Cell Biology and Immunology, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, Fort Worth, TX 76107, United States.
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30
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Yang Y, Sun B, Huang J, Xu L, Pan J, Fang C, Li M, Li G, Tao Y, Yang X, Wu Y, Miao P, Wang Y, Li H, Ren J, Zhan M, Fang Y, Feng X, Ding X. Up-regulation of miR-325-3p suppresses pineal aralkylamine N-acetyltransferase (Aanat) after neonatal hypoxia-ischemia brain injury in rats. Brain Res 2017; 1668:28-35. [PMID: 28502584 DOI: 10.1016/j.brainres.2017.05.001] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Revised: 04/29/2017] [Accepted: 05/01/2017] [Indexed: 01/05/2023]
Abstract
Survivors of hypoxic-ischemic brain damage (HIBD), besides impairment of psychomotor development, often develop circadian rhythm disorders, although the underlying mechanisms are largely unknown. Here, we first verified that mRNA and protein expression of pineal aralkylamine N-acetyltransferase (Aanat), a key regulator for melatonin (MT) synthesis, along with MT, were severely impaired after HIBD. In addition, we demonstrated that neonatal HIBD disrupted the circadian rhythmicity of locomotor activities in juvenile rats. Based on bioinformatics analysis of a high throughput screening of miRNA expression changes after HIBD (Ding et al., 2015), we identified one microRNA, miR-325-3p, as a potential candidate responsible for the down regulation of Aanat after HIBD. Luciferase reporter assays demonstrated a specific interaction between miR-325-3p and Aanat mRNA 3'-UTR. miR-325-3p blocked norepinephrine (NE) induced Aanat activation in cultured pinealocytes. In addition, miR-325-3p inhibition partially rescued Aanat induction by NE, which was significantly reduced under oxygen glucose deprivation. By elucidating the role of pineal miR-325-3p on Aanat expression upon injury, our study provides new insights into the pathophysiological mechanisms of circadian dysfunction and potential therapeutic targets after HIBD.
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Affiliation(s)
- Yuanyuan Yang
- Division of Neonatology, Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Bin Sun
- Division of Neonatology, Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Jian Huang
- Department of Genetics, Medical College, Soochow University, Suzhou 215003, PR China
| | - Lixiao Xu
- Department of Hematology and Oncology, Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Jian Pan
- Department of Hematology and Oncology, Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Chen Fang
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, Suzhou 225003, PR China
| | - Mei Li
- Department of Hematology and Oncology, Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Gen Li
- Department of Hematology and Oncology, Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Yanfang Tao
- Department of Hematology and Oncology, Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Xiaofeng Yang
- Division of Neonatology, Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Ying Wu
- Division of Child Health Care Development, Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Po Miao
- Division of Neonatology, Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Ying Wang
- Division of Neonatology, Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Hong Li
- Division of Neonatology, Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Jing Ren
- Division of Neonatology, Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Meiqin Zhan
- Division of Neonatology, Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Yiping Fang
- Division of Neonatology, Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Xing Feng
- Division of Neonatology, Children's Hospital of Soochow University, Suzhou 215003, PR China.
| | - Xin Ding
- Division of Neonatology, Children's Hospital of Soochow University, Suzhou 215003, PR China.
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31
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Bi M, Li Q, Guo D, Ding X, Bi W, Zhang Y, Zou Y. Sulphoraphane Improves Neuronal Mitochondrial Function in Brain Tissue in Acute Carbon Monoxide Poisoning Rats. Basic Clin Pharmacol Toxicol 2017; 120:541-549. [PMID: 27983767 DOI: 10.1111/bcpt.12728] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Accepted: 11/29/2016] [Indexed: 12/18/2022]
Abstract
Carbon monoxide (CO) poisoning is one of the leading causes of toxicity-related mortality and morbidity worldwide, primarily manifested by acute and delayed central nervous system (CNS) injuries and other organ damages. However, its definite pathogenesis is poorly understood. The aim of this study was to explore the pathogenesis of the ultrastructural and functional impairment of mitochondria and the protection of sulphoraphane (SFP) at different dosages on hippocampus neurons in rats after exposure to CO. We found that CO poisoning could induce advanced cognitive dysfunction, while the mitochondrial ultrastructure of neurons in rats of the CO poisoning group was seriously damaged and mitochondrial membrane potential (ΔΨm) was accordingly reduced by transmission electron microscopy (TEM) and JC-1 fluorescent probe assay. CO poisoning could also increase the expressions of both nuclear factor erythroid 2-related factor 2 (Nrf-2) and thioredoxin-1 (Trx-1) proteins and their mRNA in brain tissue with immunohistochemistry and quantitative PCR (qPCR) techniques. Early administration of either middle-dose or high-dose SFP could efficiently improve mitochondrial structure and function and enhance the antioxidative stress ability, thus exerting a positive effect against brain damage induced by acute CO poisoning.
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Affiliation(s)
- Mingjun Bi
- Department of Integration of Chinese and Western Medicine, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China.,Emergency Center, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Qin Li
- Department of Integration of Chinese and Western Medicine, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Dadong Guo
- Eye Institute of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Xiaoyu Ding
- Department of Integration of Chinese and Western Medicine, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China.,Department of Clinical Medicine, Qingdao University Medical College, Qingdao, China
| | - Weikang Bi
- Department of Clinical Medicine, Qingdao University Medical College, Qingdao, China
| | - Yueheng Zhang
- Department of Clinical Medicine, Binzhou Medical University, Yantai, China
| | - Yong Zou
- Department of Integration of Chinese and Western Medicine, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
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32
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Puhakka N, Bot AM, Vuokila N, Debski KJ, Lukasiuk K, Pitkänen A. Chronically dysregulated NOTCH1 interactome in the dentate gyrus after traumatic brain injury. PLoS One 2017; 12:e0172521. [PMID: 28273100 PMCID: PMC5342204 DOI: 10.1371/journal.pone.0172521] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Accepted: 02/06/2017] [Indexed: 12/13/2022] Open
Abstract
Traumatic brain injury (TBI) can result in several dentate gyrus-regulated disabilities. Almost nothing is known about the chronic molecular changes after TBI, and their potential as treatment targets. We hypothesized that chronic transcriptional alterations after TBI are under microRNA (miRNA) control. Expression of miRNAs and their targets in the dentate gyrus was analyzed using microarrays at 3 months after experimental TBI. Of 305 miRNAs present on the miRNA-array, 12 were downregulated (p<0.05). In parallel, 75 of their target genes were upregulated (p<0.05). A bioinformatics analysis of miRNA targets highlighted the dysregulation of the transcription factor NOTCH1 and 39 of its target genes (NOTCH1 interactome). Validation assays confirmed downregulation of miR-139-5p, upregulation of Notch1 and its activated protein, and positive enrichment of NOTCH1 target gene expression. These findings demonstrate that miRNA-based transcriptional regulation can be present at chronic time points after TBI, and highlight the NOTCH1 interactome as one of the mechanisms behind the dentate gyrus pathology-related morbidities.
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Affiliation(s)
- Noora Puhakka
- Department of Neurobiology, A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Anna Maria Bot
- The Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Niina Vuokila
- Department of Neurobiology, A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Konrad Jozef Debski
- The Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Katarzyna Lukasiuk
- The Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Asla Pitkänen
- Department of Neurobiology, A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
- * E-mail:
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33
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Wang B, Gan Z, Wang Z, Yu D, Lin Z, Lu Y, Wu Z, Jian J. Integrated analysis neurimmiRs of tilapia (Oreochromis niloticus) involved in immune response to Streptococcus agalactiae, a pathogen causing meningoencephalitis in teleosts. FISH & SHELLFISH IMMUNOLOGY 2017; 61:44-60. [PMID: 27956091 DOI: 10.1016/j.fsi.2016.12.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 11/30/2016] [Accepted: 12/07/2016] [Indexed: 06/06/2023]
Abstract
MicroRNAs (miRNAs) are a class of noncoding RNA molecules and play important roles in a wide spectrum of biological processes, including in immune response. Recent years have witnessed considerable amount of research interest in studies on miRNA-mediated modulation gene function during neuroinflammation. Here, we evaluated Streptococcus agalactiae infected tilapia (Oreochromis niloticus) brain for the expression profile of miRNAs, potential functions and their correlation with genes involved in inflammatory pathways. A total of 1981 miRNAs were identified, including in 486 miRNAs which have homologues in the currently available databases and 1945 novel miRNAs. The expression levels of 547 miRNAs were significantly altered at 6 h-48 h post-bacterial infection, and these miRNAs were therefore classified as differentially expressed tilapia miRNAs. Real-time PCR were implemented for 14 miRNAs co-expressed in five samples, and agreement was confirmed between the high-throughput sequencing and real-time PCR data. For the 486 differentially expressed miRNAs target 41,820 genes. GO and KEGG enrichment analysis revealed that some target genes of miRNAs were grouped mainly into the categories of apoptotic, signal pathwayand immune response. This is the first report of comprehensive identification of teleost miRNAs being differentially regulated in brain in normal conditions relating to bacterial infection.
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Affiliation(s)
- Bei Wang
- College of Fishery, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animal, Key Laboratory of Control for Disease of Aquatic Animals of Guangdong Higher Education Institutes, Zhanjiang, 524025, China
| | - Zhen Gan
- College of Fishery, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animal, Key Laboratory of Control for Disease of Aquatic Animals of Guangdong Higher Education Institutes, Zhanjiang, 524025, China; State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Zhongliang Wang
- College of Fishery, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animal, Key Laboratory of Control for Disease of Aquatic Animals of Guangdong Higher Education Institutes, Zhanjiang, 524025, China
| | - Dapeng Yu
- College of Fishery, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animal, Key Laboratory of Control for Disease of Aquatic Animals of Guangdong Higher Education Institutes, Zhanjiang, 524025, China
| | - Ziwei Lin
- College of Fishery, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animal, Key Laboratory of Control for Disease of Aquatic Animals of Guangdong Higher Education Institutes, Zhanjiang, 524025, China
| | - Yishan Lu
- College of Fishery, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animal, Key Laboratory of Control for Disease of Aquatic Animals of Guangdong Higher Education Institutes, Zhanjiang, 524025, China
| | - Zaohe Wu
- College of Fishery, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animal, Key Laboratory of Control for Disease of Aquatic Animals of Guangdong Higher Education Institutes, Zhanjiang, 524025, China
| | - Jichang Jian
- College of Fishery, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animal, Key Laboratory of Control for Disease of Aquatic Animals of Guangdong Higher Education Institutes, Zhanjiang, 524025, China.
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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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Alsharafi WA, Xiao B, Li J. MicroRNA-139-5p negatively regulates NR2A-containing NMDA receptor in the rat pilocarpine model and patients with temporal lobe epilepsy. Epilepsia 2016; 57:1931-1940. [PMID: 27731509 DOI: 10.1111/epi.13568] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/25/2016] [Indexed: 12/18/2022]
Abstract
OBJECTIVES Regulation of N-methyl-d-aspartate (NMDA) subunits NR2A and NR2B expression during status epilepticus (SE) remains incompletely understood. Here we explored the role of brain-enriched microRNA (miR)-139-5p in this process. METHODS miRNA microarray was performed to examine changes in miRNA expression in the rat pilocarpine model following NMDA-receptor blockade. The dynamic expression patterns of miR-139-5p, NR2A, and NR2B levels were measured in rats during the three phases of temporal lobe epilepsy (TLE) development using quantitative reverse transcription polymerase chain reaction (qRT-PCR) and Western blot. Similar expression methods were applied to hippocampi obtained from patients with TLE and from normal controls. Moreover, miR-139-5p agomir and antagomir were utilized to explore the role of miR-139-5p in determining NMDA-receptor subunit expression patterns. RESULTS We identified 18 miRNAs that were significantly altered in the rat pilocarpine model following NMDA-receptor blockade. Of these, miR-139-5p was significantly up-regulated and Grin2A was predicted as its potential putative target. In patients with TLE, miR-139-5p expression was significantly down-regulated, whereas NR2A and NR2B levels were significantly up-regulated. In the rat model of SE, miR-139-5p expression was down-regulated while NR2A was up-regulated in the acute and chronic phases, but not in the latent phase. NR2B expression was up-regulated during the three phases of TLE development. Overexpression of miR-139-5p decreased, whereas depletion of miR-139-5p enhanced the expression levels of NR2A, but not NR2B, induced by pilocarpine treatment. Of interest, NMDA nonselective antagonist and NR2A selective antagonist enhanced miR-139-5p levels suppressed by pilocarpine treatment, whereas the NR2B selective antagonist was ineffective. SIGNIFICANCE These findings elucidate the potential role of miR-139-5p in NMDA-receptor involvement in TLE development and may provide novel therapeutic targets for the future treatment of TLE.
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Affiliation(s)
- Walid A Alsharafi
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Bo Xiao
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jing Li
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, China
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Angiogenesis in Ischemic Stroke and Angiogenic Effects of Chinese Herbal Medicine. J Clin Med 2016; 5:jcm5060056. [PMID: 27275837 PMCID: PMC4929411 DOI: 10.3390/jcm5060056] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 05/27/2016] [Accepted: 05/31/2016] [Indexed: 01/06/2023] Open
Abstract
Stroke is one of the major causes of death and adult disability worldwide. The underlying pathophysiology of stroke is highly complicated, consisting of impairments of multiple signalling pathways, and numerous pathological processes such as acidosis, glutamate excitotoxicity, calcium overload, cerebral inflammation and reactive oxygen species (ROS) generation. The current treatment for ischemic stroke is limited to thromolytics such as recombinant tissue plasminogen activator (tPA). tPA has a very narrow therapeutic window, making it suitable to only a minority of stroke patients. Hence, there is great urgency to develop new therapies that can protect brain tissue from ischemic damage. Recent studies have shown that new vessel formation after stroke not only replenishes blood flow to the ischemic area of the brain, but also promotes neurogenesis and improves neurological functions in both animal models and patients. Therefore, drugs that can promote angiogenesis after ischemic stroke can provide therapeutic benefits in stroke management. In this regard, Chinese herbal medicine (CHM) has a long history in treating stroke and the associated diseases. A number of studies have demonstrated the pro-angiogenic effects of various Chinese herbs and herbal formulations in both in vitro and in vivo settings. In this article, we present a comprehensive review of the current knowledge on angiogenesis in the context of ischemic stroke and discuss the potential use of CHM in stroke management through modulation of angiogenesis.
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Piscopo P, Grasso M, Fontana F, Crestini A, Puopolo M, Del Vescovo V, Venerosi A, Calamandrei G, Vencken SF, Greene CM, Confaloni A, Denti MA. Reduced miR-659-3p Levels Correlate with Progranulin Increase in Hypoxic Conditions: Implications for Frontotemporal Dementia. Front Mol Neurosci 2016; 9:31. [PMID: 27199656 PMCID: PMC4853935 DOI: 10.3389/fnmol.2016.00031] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 04/21/2016] [Indexed: 11/25/2022] Open
Abstract
Progranulin (PGRN) is a secreted protein expressed ubiquitously throughout the body, including the brain, where it localizes in neurons and is activated microglia. Loss-of-function mutations in the GRN gene are an important cause of familial frontotemporal lobar degeneration (FTLD). PGRN has a neurotrophic and anti-inflammatory activity, and it is neuroprotective in several injury conditions, such as oxygen or glucose deprivation, oxidative injury, and hypoxic stress. Indeed, we have previously demonstrated that hypoxia induces the up-regulation of GRN transcripts. Several studies have shown microRNAs (miRNAs) involvement in hypoxia. Moreover, in FTLD patients with a genetic variant of GRN (rs5848), the reinforcement of miR-659-3p binding site has been suggested to be a risk factor. Here, we report that miR-659-3p interacts directly with GRN 3′UTR as shown by luciferase assay in HeLa cells and ELISA and Western Blot analysis in HeLa and Kelly cells. Moreover, we demonstrate the physical binding between GRN mRNA and miR-659-3p employing a miRNA capture-affinity technology in SK-N-BE and Kelly cells. In order to study miRNAs involvement in hypoxia-mediated up-regulation of GRN, we evaluated miR-659-3p levels in SK-N-BE cells after 24 h of hypoxic treatment, finding them inversely correlated to GRN transcripts. Furthermore, we analyzed an animal model of asphyxia, finding that GRN mRNA levels increased at post-natal day (pnd) 1 and pnd 4 in rat cortices subjected to asphyxia in comparison to control rats and miR-659-3p decreased at pnd 4 just when GRN reached the highest levels. Our results demonstrate the interaction between miR-659-3p and GRN transcript and the involvement of miR-659-3p in GRN up-regulation mediated by hypoxic/ischemic insults.
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Affiliation(s)
- Paola Piscopo
- Department of Cell Biology and Neuroscience, Istituto Superiore di Sanità Rome, Italy
| | - Margherita Grasso
- Laboratory of RNA Biology and Biotechnology, Centre for Integrative Biology, University of Trento Trento, Italy
| | - Francesca Fontana
- Laboratory of RNA Biology and Biotechnology, Centre for Integrative Biology, University of Trento Trento, Italy
| | - Alessio Crestini
- Department of Cell Biology and Neuroscience, Istituto Superiore di Sanità Rome, Italy
| | - Maria Puopolo
- Department of Cell Biology and Neuroscience, Istituto Superiore di Sanità Rome, Italy
| | - Valerio Del Vescovo
- Laboratory of RNA Biology and Biotechnology, Centre for Integrative Biology, University of Trento Trento, Italy
| | - Aldina Venerosi
- Department of Cell Biology and Neuroscience, Istituto Superiore di Sanità Rome, Italy
| | - Gemma Calamandrei
- Department of Cell Biology and Neuroscience, Istituto Superiore di Sanità Rome, Italy
| | - Sebastian F Vencken
- Respiratory Research Division, Department of Medicine, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital Dublin, Ireland
| | - Catherine M Greene
- Respiratory Research Division, Department of Medicine, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital Dublin, Ireland
| | - Annamaria Confaloni
- Department of Cell Biology and Neuroscience, Istituto Superiore di Sanità Rome, Italy
| | - Michela A Denti
- Laboratory of RNA Biology and Biotechnology, Centre for Integrative Biology, University of Trento Trento, Italy
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Hu Z, Zhong B, Tan J, Chen C, Lei Q, Zeng L. The Emerging Role of Epigenetics in Cerebral Ischemia. Mol Neurobiol 2016; 54:1887-1905. [PMID: 26894397 DOI: 10.1007/s12035-016-9788-3] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2015] [Accepted: 02/11/2016] [Indexed: 12/14/2022]
Abstract
Despite great progresses in the treatment and prevention of ischemic stroke, it is still among the leading causes of death and serious long-term disability all over the world, indicating that innovative neural regenerative and neuroprotective agents are urgently needed for the development of therapeutic approaches with greater efficacy for ischemic stroke. More and more evidence suggests that a spectrum of epigenetic processes play an important role in the pathophysiology of cerebral ischemia. In the present review, we first discuss recent developments in epigenetic mechanisms, especially their roles in the pathophysiology of cerebral ischemia. Specifically, we focus on DNA methylation, histone deacetylase, histone methylation, and microRNAs (miRNAs) in the regulation of vascular and neuronal regeneration after cerebral ischemia. Additionally, we highlight epigenetic strategies for ischemic stroke treatments, including the inhibition of histone deacetylase enzyme and DNA methyltransferase activities, and miRNAs. These therapeutic strategies are far from clinic use, but preliminary data indicate that neuroprotective agents targeting these pathways can modulate neural cell regeneration and promote brain repair and functional recovery after cerebral ischemia. A better understanding of how epigenetics influences the process and progress of cerebral ischemia will pave the way for discovering more sensitive and specific biomarkers and new targets and therapeutics for ischemic stroke.
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Affiliation(s)
- Zhiping Hu
- Department of Neurology, Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Bingwu Zhong
- Department of Neurology, Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China.,Department of Traditional Chinese Medicine, Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Jieqiong Tan
- National Key Laboratory of Medical Genetics, Central South University, Changsha, 410078, Hunan, China
| | - Chunli Chen
- Department of Neurology, Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Qiang Lei
- Department of Neurology, Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Liuwang Zeng
- Department of Neurology, Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China.
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Mi L, Chen Y, Zheng X, Li Y, Zhang Q, Mo D, Yang G. MicroRNA-139-5p Suppresses 3T3-L1 Preadipocyte Differentiation Through Notch and IRS1/PI3K/Akt Insulin Signaling Pathways. J Cell Biochem 2016; 116:1195-204. [PMID: 25536154 DOI: 10.1002/jcb.25065] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Accepted: 12/18/2014] [Indexed: 12/25/2022]
Abstract
MicroRNAs (miRNAs) participate in the regulation of adipogenesis. Identification of the full repertoire of miRNAs expressed in adipose tissue is likely to significantly improve our understanding of adipose tissue growth and development. Here, miR-139-5p was identified as an inhibitor of 3T3-L1 adipocyte differentiation with significantly down-regulating the expression levels of adipogenic marker genes PPAR γ (P < 0.01), aP2 (P < 0.01) and FAS (P < 0.01). Importantly, flow cytometry and EdU incorporation assay indicated that this inhibition was partly due to the dysfunction of clonal expansion. Furthermore, we firstly demonstrated that miR-139-5p blocked adipogenesis via directly targeted the 3' untranslated regions (UTRs) of Notch1 and IRS1 mRNAs, a key member of Notch signaling and IRS1/PI3K/Akt insulin signaling, respectively. In addition, the overexpression of Notch1 or IRS1 partially restored the suppressive effects miR-139-5p on differentiation of 3T3-L1 cells. To our knowledge, this was the first report that miR-139-5p functioned negatively by targeting Notch1 and IRS1 during 3T3-L1 adipogenesis, regulating the transition from clonal expansion to terminal differentiation.
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Affiliation(s)
- Lin Mi
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Yaosheng Chen
- College of Life Science, Sun Yat-Sen University, Guangzhou, China
| | - Xueli Zheng
- College of forestry, Northwest A&F University, Yangling, China
| | - Youlei Li
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Qiangling Zhang
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Delin Mo
- College of Life Science, Sun Yat-Sen University, Guangzhou, China
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Li Q, Cheng Y, Bi M, Lin H, Chen Y, Zou Y, Liu Y, Kang H, Guo Y. Effects of N-butylphthalide on the activation of Keap1/Nrf-2 signal pathway in rats after carbon monoxide poisoning. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2015; 40:22-9. [PMID: 26056974 DOI: 10.1016/j.etap.2015.05.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2015] [Revised: 05/13/2015] [Accepted: 05/16/2015] [Indexed: 05/16/2023]
Abstract
UNLABELLED Carbon monoxide (CO) is the leading cause of death by poisoning all over the world and may result in neuropathologic changes and cognitive and neurologic sequelae, yet little is known regarding its outcomes. The present study aimed to evaluate the neuroprotective effects of N-butylphthalide (NBP) against brain damage after acute CO poisoning. The animal model of CO poisoning was established by exposed to 1000 ppm CO in air for 40 min and then to 3000 ppm for another 20 min. RT-PCR was used to assess the expressions of apoptosis-associated genes Bcl-2 mRNA and Bax mRNA. Mitochondrial membrane potential (MMP) was detected by fluorescent probe JC-1. Immunohistochemistry stain and Western blot assay were used to evaluate the expression levels of Kelch-like ECH-associated protein 1 (Keapl), nuclear factor erythroid 2-related factor 2 (Nrf-2) and NAD(P)H quinone oxidoreductase 1(NQO-1). CO poisoning could increase the levels of Bcl-2 mRNA and Bax mRNA expressions, and obviously decrease the MMP of cells. NBP treatment could maintain the high MMP, significantly up-regulate Bcl-2 mRNA and down-regulate Bax mRNA expression, and the ratio of Bcl-2 mRNA/Bax mRNA expressions was higher than that in the CO poisoning group (P<0.05). CO poisoning could start oxidative stress response. The expressions of Keap1, Nrf-2 and NQO-1 proteins significantly increased at 1, 3 and 7 day after NBP administration as compared with the CO poisoning group (P<0.01). These findings suggest that N-butylphthalide may protect mitochondrial function, balance the expressions of anti-apoptosis genes and pro-apoptosis genes, be in part associated with activation of Keap1-Nrf-2/antioxidant response element (ARE) signaling pathway, and play a neuroprotective role in brain damage after acute CO poisoning.
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Affiliation(s)
- Qin Li
- Emergency Centre, Yantai Yuhuangding Hospital Affiliated Hospital of Qingdao University Medical College, Yantai Yudong 20 Road, PR China
| | - Yongmei Cheng
- Emergency Centre, Yantai Yuhuangding Hospital Affiliated Hospital of Qingdao University Medical College, Yantai Yudong 20 Road, PR China.
| | - MingJun Bi
- Emergency Centre, Yantai Yuhuangding Hospital Affiliated Hospital of Qingdao University Medical College, Yantai Yudong 20 Road, PR China.
| | - Hongyang Lin
- Emergency Centre, Yantai Yuhuangding Hospital Affiliated Hospital of Qingdao University Medical College, Yantai Yudong 20 Road, PR China
| | - Yufei Chen
- Emergency Centre, Yantai Yuhuangding Hospital Affiliated Hospital of Qingdao University Medical College, Yantai Yudong 20 Road, PR China
| | - Yong Zou
- Department of Clinical Medicine, Yantai Yuhuangding Hospital Affiliated Hospital of Qingdao University Medical College, Yantai Yudong 20 Road, PR China
| | - Yuanyuan Liu
- Emergency Centre, Yantai Yuhuangding Hospital Affiliated Hospital of Qingdao University Medical College, Yantai Yudong 20 Road, PR China
| | - Hai Kang
- Emergency Centre, Yantai Yuhuangding Hospital Affiliated Hospital of Qingdao University Medical College, Yantai Yudong 20 Road, PR China
| | - Yunliang Guo
- Institute of Cerebrovascular Diseases, Affiliated Hospital of Qingdao University Medical College, Qingdao Jiangsu 16 Road, PR China
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Wang H, Ye Y, Zhu Z, Mo L, Lin C, Wang Q, Wang H, Gong X, He X, Lu G, Lu F, Zhang S. MiR-124 Regulates Apoptosis and Autophagy Process in MPTP Model of Parkinson's Disease by Targeting to Bim. Brain Pathol 2015; 26:167-76. [PMID: 25976060 DOI: 10.1111/bpa.12267] [Citation(s) in RCA: 145] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Accepted: 04/14/2015] [Indexed: 12/19/2022] Open
Abstract
Parkinson's disease (PD) is the most prevalent movement disorder characterized by selective loss of midbrain dopaminergic (DA) neurons. MicroRNA-124 (miR-124) is abundantly expressed in the DA neurons and its expression level decreases in the 1-methyl-4-pheny-1, 2, 3, 6-tetrahydropyridine (MPTP) model of PD. However, whether the upregulation of miR-124 could attenuate neurodegeneration remains unknown. Here, we employed miR-124 agomir and miR-124 mimics to upregulate miR-124 expression in MPTP-treated mice and MPP(+) -intoxicated SH-SY5Y cells, respectively. We found that loss of DA neurons and striatal dopamine in MPTP-treated mice was significantly reduced by upregulating miR-124. In addition, we identified a target of miR-124, Bim that mediated the neuroprotection of miR-124. Indeed, treatment of miR-124 agomir in MPTP-treated mice inhibited Bim expression, thus suppressing Bax translocation to mitochondria. Moreover, impaired autophagy process in MPTP-treated mice and MPP(+) -intoxicated SH-SY5Y cells characterized as autophagosomes (AP) accumulation and lysosomal depletion were alleviated by the upregulation of miR-124. Taken together, these results indicate that upregulation of miR-124 could regulate apoptosis and impaired autophagy process in the MPTP model of PD, thus reducing the loss of DA neurons.
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Affiliation(s)
- Huiqing Wang
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.,The National Key Clinic Specialty, The Neurosurgery Institute of Guangdong Province, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Southern Medical University, Guangzhou, China
| | - Yongyi Ye
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.,The National Key Clinic Specialty, The Neurosurgery Institute of Guangdong Province, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Southern Medical University, Guangzhou, China
| | - Zhiyuan Zhu
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.,The National Key Clinic Specialty, The Neurosurgery Institute of Guangdong Province, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Southern Medical University, Guangzhou, China
| | - Liqian Mo
- Department of Pharmacy, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Chunnan Lin
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.,The National Key Clinic Specialty, The Neurosurgery Institute of Guangdong Province, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Southern Medical University, Guangzhou, China
| | - Qifu Wang
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.,The National Key Clinic Specialty, The Neurosurgery Institute of Guangdong Province, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Southern Medical University, Guangzhou, China
| | - Haoyuan Wang
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.,The National Key Clinic Specialty, The Neurosurgery Institute of Guangdong Province, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Southern Medical University, Guangzhou, China
| | - Xin Gong
- The National Key Clinic Specialty, The Neurosurgery Institute of Guangdong Province, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Southern Medical University, Guangzhou, China.,Department of Neurosurgery, Hunan Provincial People's Hospital, Changsha, China
| | - Xiaozheng He
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.,The National Key Clinic Specialty, The Neurosurgery Institute of Guangdong Province, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Southern Medical University, Guangzhou, China
| | - Guohui Lu
- Department of Neurosurgery, the First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Fengfei Lu
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.,The National Key Clinic Specialty, The Neurosurgery Institute of Guangdong Province, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Southern Medical University, Guangzhou, China
| | - Shizhong Zhang
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.,The National Key Clinic Specialty, The Neurosurgery Institute of Guangdong Province, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Southern Medical University, Guangzhou, China
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Ding X, Sun B, Huang J, Xu L, Pan J, Fang C, Tao Y, Hu S, Li R, Han X, Miao P, Wang Y, Yu J, Feng X. The role of miR-182 in regulating pineal CLOCK expression after hypoxia-ischemia brain injury in neonatal rats. Neurosci Lett 2015; 591:75-80. [PMID: 25684245 DOI: 10.1016/j.neulet.2015.02.026] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Revised: 01/14/2015] [Accepted: 02/11/2015] [Indexed: 11/18/2022]
Abstract
Circadian rhythm disorder is a common neurological deficit caused by neonatal hypoxic-ischemic brain damage (HIBD). However, little is known about its underlying mechanisms. Our previous studies revealed a significant elevation of clock genes at the protein, but not mRNA, levels in the pineal gland after neonatal HIBD. To investigate the mechanisms of post-transcriptional regulation on clock genes, we screened changes of miRNA levels in the pineal gland after neonatal HIBD using high-throughput arrays. Within the miRNAs whose expression was significantly down-regulated, we identified one miRNA (miR182) that targeted the 3'-untranslated region (3'-UTR) of Clock, a key component of clock genes, and played a crucial role in regulating CLOCK expression after oxygen-glucose deprivation in primarily cultured pinealocytes. Our findings therefore provide new insight on studies of therapeutic targets for circadian rhythm disturbance after neonatal HIBD.
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Affiliation(s)
- Xin Ding
- Division of Neonatology, Affiliated Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Bin Sun
- Division of Neonatology, Affiliated Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Jian Huang
- Center for Circadian Clocks, Medical College, Soochow University, Suzhou 215003, PR China
| | - Lixiao Xu
- Department of Hematology and Oncology, Affiliated Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Jian Pan
- Department of Hematology and Oncology, Affiliated Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Chen Fang
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, Suzhou 225003, PR China
| | - Yanfang Tao
- Department of Hematology and Oncology, Affiliated Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Shukun Hu
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, PR China
| | - Ronghu Li
- Division of Neonatology, Affiliated Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Xing Han
- Division of Neonatology, Affiliated Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Po Miao
- Division of Neonatology, Affiliated Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Ying Wang
- Division of Neonatology, Affiliated Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Jian Yu
- Division of Neonatology, Affiliated Children's Hospital of Soochow University, Suzhou 215003, PR China
| | - Xing Feng
- Division of Neonatology, Affiliated Children's Hospital of Soochow University, Suzhou 215003, PR China.
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Mi L, Li Y, Zhang Q, Zhao C, Peng Y, Yang G, Zheng X. MicroRNA-139-5p regulates C2C12 cell myogenesis through blocking Wnt/β-catenin signaling pathway. Biochem Cell Biol 2014; 93:8-15. [PMID: 25529604 DOI: 10.1139/bcb-2014-0079] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
MicroRNAs (miRNAs) are novel and potent regulators in myogenesis. However, the molecular mechanisms that many miRNAs regulate myoblast proliferation and differentiation which are largely unknown. Here, we found that miR-139-5p increased during C2C12 myoblast proliferation, while presenting an inverse trend during C2C12 myoblast differentiation. Flow cytometry and EdU incorporation assay showed that miR-139-5p slowed down the growth of C2C12 cells. Additional study demonstrated that ectopic introduction of miR-139-5p into C2C12 cells blocked myoblast differentiation. Importantly, we demonstrated for the first time that Wnt1, which is associated with the Wnt/β-catenin signaling pathway, was a direct target of miR-139-5p. Moreover, we found that the expression level of Wnt1 was suppressed significantly (p < 0.01) by miR-139-5p, which triggered inhibition of Wnt/β-catenin signaling through upregulation of glycogen synthase kinase 3 beta (GSK-3β; p < 0.05) and downregulation of p-GSK-3β (p < 0.01), β-catenin (p < 0.05), and nuclear β-catenin (p < 0.01). Taken together, these results suggest that miR-139-5p is an important negative regulator in myogenesis through blocking the Wnt1-mediated Wnt/β-catenin signaling pathway.
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Affiliation(s)
- Lin Mi
- a Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, China
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Abstract
Abstract
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