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Awuson-David B, Williams AC, Wright B, Hill LJ, Di Pietro V. Common microRNA regulated pathways in Alzheimer's and Parkinson's disease. Front Neurosci 2023; 17:1228927. [PMID: 37719162 PMCID: PMC10502311 DOI: 10.3389/fnins.2023.1228927] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 08/02/2023] [Indexed: 09/19/2023] Open
Abstract
MicroRNAs (miRNAs) are small non-coding RNAs involved in gene regulation. Recently, miRNA dysregulation has been found in neurodegenerative diseases such as Alzheimer's disease (AD) and Parkinson's disease (PD). The diagnosis of Alzheimer's and Parkinson's is currently challenging, mainly occurring when pathology is already present, and although treatments are available for both diseases, the role of treatment is primarily to prevent or delay the progress of the diseases instead of fully overcoming the diseases. Therefore, the challenge in the near future will be to determine effective drugs to tackle the dysregulated biological pathways in neurodegenerative diseases. In the present study, we describe the dysregulation of miRNAs in blood of Alzheimer's and Parkinson's patients with the aim to identify common mechanisms between the 2 pathologies and potentially to identify common therapeutic targets which can stop or delay the progression of two most frequent neuropathologies. Two independent systematic reviews, bioinformatic analysis, and experiment validation were performed to identify whether AD and PD share common pathways. A total of 15 common miRNAs were found in the literature and 13 common KEGG pathways. Among the common miRNAs, two were selected for validation in a small cohort of AD and PD patients. Let-7f-5p and miR-29b-3p showed to be good predictors in blood of PD patients.
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Affiliation(s)
- Betina Awuson-David
- School of Biomedical Sciences, Institute of Clinical Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Adrian C. Williams
- Department of Neurology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom
| | - Benjamin Wright
- Department of Neurology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom
| | - Lisa J. Hill
- School of Biomedical Sciences, Institute of Clinical Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Valentina Di Pietro
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
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2
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Amirmahani F, Vallian S, Asadi MH. The LncRNA MIAT is identified as a regulator of stemness-associated transcript in glioma. Mol Biol Rep 2023; 50:517-530. [PMID: 36352177 DOI: 10.1007/s11033-022-07962-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 09/17/2022] [Indexed: 11/11/2022]
Abstract
BACKGROUND Myocardial infarction-associated transcript (MIAT) is a long non-coding RNA (lncRNA) with altered expression in different diseases and malignancies. In this study, the potential expression and function of lncRNA MIAT in intuition and progression of brain cancer was investigated. METHODS AND RESULTS At first, TCGA data analysis demonstrated that lncRNA MIAT is significantly upregulated in various malignancies, especially its expression is dramatically elevated in brain tumors. In line with the data, we further evaluated the expression of MIAT in a series of brain tumor tissue, and our results revealed that the expression of MIAT was noticeably overexpressed in glioblastoma (p = < 0.0001). We further found that the expression of MIAT was markedly upregulated in low-grade brain tumors rather than high-grade ones. To further investigate the biological function of MIAT in brain cancer cells, its expression was suppressed by si-RNA-mediated knocking down. Inhibition of MIAT resulted in reduced proliferation of brain tumor cells followed by cell cycle arrest at the G1 phase, and significant induction of apoptosis, and senescence, but limited the migration ability and epithelial-mesenchymal-transition (EMT). Moreover, knocking-down of MIAT reduced the expression of stemness factors, followed by upregulation of their downstream miRNAs (micro RNAs), let-7a-5p, and miR-29b-3p. CONCLUSIONS Altogether, our data demonstrated that lncRNA MIAT could control proliferation, migration, and metastasis of brain cancer cells via regulating the Nanog/ Sox2 / let-7a-5p / miR-29b-3p axis. This data could introduce lncRNA MIAT as a novel oncogene in brain cancer pathogenesis.
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Affiliation(s)
- Farzane Amirmahani
- Department of Cell and Molecular Biology and Microbiology, Faculty of Science and Technology, University of Isfahan, Isfahan, Iran
| | - Sadeq Vallian
- Department of Cell and Molecular Biology and Microbiology, Faculty of Science and Technology, University of Isfahan, Isfahan, Iran.
| | - Malek Hossein Asadi
- Department of Biotechnology, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran.
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3
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Hu Y, Zhou H, Zhang H, Sui Y, Zhang Z, Zou Y, Li K, Zhao Y, Xie J, Zhang L. The neuroprotective effect of dexmedetomidine and its mechanism. Front Pharmacol 2022; 13:965661. [PMID: 36204225 PMCID: PMC9531148 DOI: 10.3389/fphar.2022.965661] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 08/16/2022] [Indexed: 11/28/2022] Open
Abstract
Dexmedetomidine (DEX) is a highly selective α2 receptor agonist that is routinely used in the clinic for sedation and anesthesia. Recently, an increasing number of studies have shown that DEX has a protective effect against brain injury caused by traumatic brain injury (TBI), subarachnoid hemorrhage (SAH), cerebral ischemia and ischemia–reperfusion (I/R), suggesting its potential as a neuroprotective agent. Here, we summarized the neuroprotective effects of DEX in several models of neurological damage and examined its mechanism based on the current literature. Ultimately, we found that the neuroprotective effect of DEX mainly involved inhibition of inflammatory reactions, reduction of apoptosis and autophagy, and protection of the blood–brain barrier and enhancement of stable cell structures in five way. Therefore, DEX can provide a crucial advantage in neurological recovery for patients with brain injury. The purpose of this study was to further clarify the neuroprotective mechanisms of DEX therefore suggesting its potential in the clinical management of the neurological injuries.
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Affiliation(s)
- Yijun Hu
- Neurology Department, Weifang Hospital of Traditional Chinese Medicine, Weifang, China
- Graduate School, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Hong Zhou
- Neurology Department, Weifang Hospital of Traditional Chinese Medicine, Weifang, China
| | - Huanxin Zhang
- Neurology Department, Weifang Hospital of Traditional Chinese Medicine, Weifang, China
| | - Yunlong Sui
- Neurology Department, Weifang Hospital of Traditional Chinese Medicine, Weifang, China
| | - Zhen Zhang
- Neurology Department, Weifang Hospital of Traditional Chinese Medicine, Weifang, China
| | - Yuntao Zou
- Neurology Department, Weifang Hospital of Traditional Chinese Medicine, Weifang, China
| | - Kunquan Li
- Neurology Department, Weifang Hospital of Traditional Chinese Medicine, Weifang, China
| | - Yunyi Zhao
- Neurology Department, Weifang Hospital of Traditional Chinese Medicine, Weifang, China
| | - Jiangbo Xie
- Neurology Department, Weifang Hospital of Traditional Chinese Medicine, Weifang, China
| | - Lunzhong Zhang
- Neurology Department, Weifang Hospital of Traditional Chinese Medicine, Weifang, China
- *Correspondence: Lunzhong Zhang,
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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: 2] [Impact Index Per Article: 1.0] [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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5
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Kaltenmeier C, Yazdani HO, Handu S, Popp B, Geller D, Tohme S. The Role of Neutrophils as a Driver in Hepatic Ischemia-Reperfusion Injury and Cancer Growth. Front Immunol 2022; 13:887565. [PMID: 35844608 PMCID: PMC9284204 DOI: 10.3389/fimmu.2022.887565] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 06/02/2022] [Indexed: 12/22/2022] Open
Abstract
The innate immune system plays an essential role in the response to sterile inflammation and its association with liver ischemia and reperfusion injury (IRI). Liver IRI often manifests during times of surgical stress such as cancer surgery or liver transplantation. Following the initiation of liver IRI, stressed hepatocytes release damage-associated molecular patterns (DAMPs) which promote the infiltration of innate immune cells which then initiate an inflammatory cascade and cytokine storm. Upon reperfusion, neutrophils are among the first cells that infiltrate the liver. Within the liver, neutrophils play an important role in fueling tissue damage and tumor progression by promoting the metastatic cascade through the formation of Neutrophil Extracellular Traps (NETs). NETs are composed of web-like DNA structures containing proteins that are released in response to inflammatory stimuli in the environment. Additionally, NETs can aid in mediating liver IRI, promoting tumor progression, and most recently, in mediating early graft rejection in liver transplantation. In this review we aim to summarize the current knowledge of innate immune cells, with a focus on neutrophils, and their role in mediating IRI in mouse and human diseases, including cancer and transplantation. Moreover, we will investigate the interaction of Neutrophils with varying subtypes of other cells. Furthermore, we will discuss the role and different treatment modalities in targeting Neutrophils and NETs to prevent IRI.
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Affiliation(s)
- Christof Kaltenmeier
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, United States
| | - Hamza O. Yazdani
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, United States
| | - Sanah Handu
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, United States
| | - Brandon Popp
- Lake Erie College of Osteopathic Medicine, Erie, PA, United States
| | - David Geller
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, United States
| | - Samer Tohme
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, United States
- *Correspondence: Samer Tohme,
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6
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Neag MA, Mitre AO, Burlacu CC, Inceu AI, Mihu C, Melincovici CS, Bichescu M, Buzoianu AD. miRNA Involvement in Cerebral Ischemia-Reperfusion Injury. Front Neurosci 2022; 16:901360. [PMID: 35757539 PMCID: PMC9226476 DOI: 10.3389/fnins.2022.901360] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 05/23/2022] [Indexed: 11/13/2022] Open
Abstract
Cerebral ischemia reperfusion injury is a debilitating medical condition, currently with only a limited amount of therapies aimed at protecting the cerebral parenchyma. Micro RNAs (miRNAs) are small, non-coding RNA molecules that via the RNA-induced silencing complex either degrade or prevent target messenger RNAs from being translated and thus, can modulate the synthesis of target proteins. In the neurological field, miRNAs have been evaluated as potential regulators in brain development processes and pathological events. Following ischemic hypoxic stress, the cellular and molecular events initiated dysregulate different miRNAs, responsible for long-terming progression and extension of neuronal damage. Because of their ability to regulate the synthesis of target proteins, miRNAs emerge as a possible therapeutic strategy in limiting the neuronal damage following a cerebral ischemic event. This review aims to summarize the recent literature evidence of the miRNAs involved in signaling and modulating cerebral ischemia-reperfusion injuries, thus pointing their potential in limiting neuronal damage and repair mechanisms. An in-depth overview of the molecular pathways involved in ischemia reperfusion injury and the involvement of specific miRNAs, could provide future perspectives in the development of neuroprotective agents targeting these specific miRNAs.
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Affiliation(s)
- Maria-Adriana Neag
- Department of Pharmacology, Toxicology and Clinical Pharmacology, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Andrei-Otto Mitre
- Faculty of Medicine, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | | | - Andreea-Ioana Inceu
- Department of Pharmacology, Toxicology and Clinical Pharmacology, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Carina Mihu
- Department of Pharmacology, Toxicology and Clinical Pharmacology, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Carmen-Stanca Melincovici
- Department of Morphological Sciences, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Marius Bichescu
- Faculty of Medicine, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Anca-Dana Buzoianu
- Department of Pharmacology, Toxicology and Clinical Pharmacology, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
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7
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Li K, Zhou P, Li S, Zheng S, Wang D. MicroRNA-29b reduces myocardial ischemia-reperfusion injury in rats via down-regulating PTEN and activating the Akt/eNOS signaling pathway. J Thromb Thrombolysis 2021; 53:123-135. [PMID: 34370169 DOI: 10.1007/s11239-021-02535-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/16/2021] [Indexed: 01/20/2023]
Abstract
Reperfusion may cause injuries to the myocardium in ischemia situation, which is called ischemia/reperfusion (I/R) injury. The study aimed to explore the roles of microRNA-29b (miR-29b) in myocardial I/R injury. Myocardial I/R injury rat model was established. Differentially expressed miRNAs between the model rats and the sham-operated rats were analyzed. miR-29b expression in myocardial tissues was measured. Gain-of-function of miR-29b was performed, and then the morphological changes, infarct size, myocardial function, oxidative stress, and the cell apoptosis in myocardial tissues were detected. The target relation between miR-29b and PTEN was detected through bio-information prediction and dual luciferase reporter gene assay. Activation of Akt/eNOS signaling was detected. H9C2 cells were subjected to hypoxia/reoxygenation treatment to perform in vitro experiments. I/R rats presented severe inflammatory infiltration, increased infarct size and cell apoptosis, increased oxidative stress and decreased myocardial function. miR-29b was downregulated in I/R rats, and up-regulation of miR-29b reversed the above changes. miR-29b directly bound to PTEN, and overexpression of miR-29b reduced PTEN expression level and increased the protein levels of p-Akt/Akt and p-eNOS/eNOS. In vivo results were confirmed in in vitro experiments. This study provided evidence that miR-29b could alleviate the myocardial I/R injury in vivo and in vitro by inhibiting PTEN expression and activating the Akt/eNOS signaling pathway.
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Affiliation(s)
- Kunsheng Li
- Department of Cardiothoracic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, 210008, Jiangsu Province, People's Republic of China
| | - Pengyu Zhou
- Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, 515000, Guangdong Province, People's Republic of China
| | - Shiliang Li
- Department of Cardiac Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei Province, People's Republic of China
| | - Shaoyi Zheng
- Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, 515000, Guangdong Province, People's Republic of China.
| | - Dongjin Wang
- Department of Cardiothoracic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, 210008, Jiangsu Province, People's Republic of China.
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8
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Zhao S, Liu X, Kang J, Sun S, Li Y, Zhang J, Li Q, Ji X. Analysis of microRNA expression in cerebral ischemia/reperfusion after mild therapeutic hypothermia treatment in rats. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:168. [PMID: 33569470 PMCID: PMC7867934 DOI: 10.21037/atm-21-143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background This study aimed to explore the molecular mechanism of mild hypothermia in in the treatment of cerebral ischemia, microRNA (miRNA) microarrays and bioinformatics analysis were employed to examine the miRNA expression profiles of rats with mild therapeutic hypothermia after middle cerebral artery occlusion (MCAO). Methods MCAO was induced in Male Sprague–Dawley rats. Mild hypothermia treatment began from the onset of ischemia and maintained for 3 hours. miRNA expressions following focal cerebral ischemia and mild hypothermia treatment were profiled using microarray technology. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) were used to analyze the functions of the target genes in mild therapeutic hypothermia after MCAO. 60 min before MCAO, mimics and inhibitor of miR-291b were injected into the right lateral ventricle respectively, then the infarct volume and neuronal apoptosis were analyzed. Results Six upregulated miRNAs and 6 downregulated miRNAs were detected 4 hours after mild therapeutic hypothermia, and after 24 hours, 41 and 10 miRNAs were upregulated and downregulated, respectively. The target genes of the differentially expressed genes were mainly related with multicellular organism development and the mucin type O-glycan biosynthesis pathway was the most enriched KEGG pathway. Among the differentially expressed miRNAs, miR-291b was selected to assess the effects of mild therapeutic hypothermia in MCAO rats. At 24 hours after mild therapeutic hypothermia, miR-291b overexpression was proved to exhibit neuroprotective effects. Conclusions The results showed that miRNAs might play a pivotal role in mild therapeutic hypothermia in cerebral ischemia/reperfusion injury. Further understanding of the mechanism and function of miRNAs would help to illuminate the mechanism of mild therapeutic hypothermia in cerebral ischemia/reperfusion injury.
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Affiliation(s)
- Shangfeng Zhao
- Department of Neurosurgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Xiangrong Liu
- China National Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Jun Kang
- Department of Neurosurgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Si Sun
- Department of Neurosurgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Yong Li
- Department of Neurosurgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Jialiang Zhang
- Department of Neurosurgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Qi Li
- China National Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Xunming Ji
- Department of Neurosurgery, Xuanwu Hospital of Capital Medical University, Beijing, China
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9
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Ren B, Liu J, Wu K, Zhang J, Lv Y, Wang S, Liu L, Liu D. TNF-α-elicited miR-29b potentiates resistance to apoptosis in peripheral blood monocytes from patients with rheumatoid arthritis. Apoptosis 2020; 24:892-904. [PMID: 31473844 DOI: 10.1007/s10495-019-01567-3] [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] [Indexed: 02/06/2023]
Abstract
CD14-positive monocytes from patients with rheumatoid arthritis (RA) are more resistant to apoptosis, which promotes their persistence at the inflammatory site and thereby contributes crucially to immunopathology. We sought to elucidate one mechanism underlying this unique pathogenesis: resistance to apoptosis and the potential involvement of miR-29b in this process. CD14-positive peripheral blood monocytes (PBMs) from RA patients were observed to be resistant to spontaneous apoptosis compared to PBMs from healthy volunteers. Intriguingly, expression of miR-29b was significantly upregulated in PBMs from RA patients than those from healthy volunteers, and this upregulation was correlated with RA disease activity. Functionally, forced expression of the exogenous miR-29b in CD14-positive Ctrl PBMs conferred resistance to spontaneous apoptosis and Fas-induced death, thereafter enhancing the production of major proinflammatory cytokines in there cells. Following identification of the potential miR-29b target transcripts using bioinformatic algorithms, we showed that miR-29b could directly bind to the 3'-UTR of the high-mobility group box-containing protein 1 (HBP1) and inhibited its transcription in PBMs. Importantly, stable expression of the exogenous HBP1 in differentiated THP-1 monocytes effectively abolished miR-29b-elicited resistance to Fas-induced apoptosis. Finally, among patients with RA and good clinical responses to immunotherapy, expression levels of miR-29b were significantly compromised in those treated with infliximab (a TNF-α inhibitor) but not in those treated with tocilizumab (a humanized mAb against the IL-6 receptor), pointing to a potential association between miR-29b activation and TNF-α induction. The available data collectively suggest that TNF-α-elicited miR-29b potentiates resistance to apoptosis in PBMs from RA patients via inhibition of HBP1 signaling, and testing patients for miR-29b/HBP1 expression ratios may provide more accurate prognostic information and could influence the recommended course of immunotherapy.
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Affiliation(s)
- Baodi Ren
- Department of Rheumatology and Immunology, Xi'an Institute of Rheumatology, Xi'an No.5 Hospital, No. 112 XiGuanZhengJie, Lian Hu District, Xi'an, 710082, Shaanxi Province, China.,Department of Rheumatology and Immunology, Shaanxi Hospital of Integrated Traditional Chinese and Western Medicine, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Shaanxi University of Chinese Medicine, No. 112 XiGuanZhengJie, Lian Hu District, Xi'an, 710082, Shaanxi Province, China
| | - Jiayu Liu
- Department of Rheumatology and Immunology, Xi'an Institute of Rheumatology, Xi'an No.5 Hospital, No. 112 XiGuanZhengJie, Lian Hu District, Xi'an, 710082, Shaanxi Province, China.,Core Research Laboratory, The Second Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, No.157 XiWu Road, Xincheng District, Xi'an, 710004, China
| | - Kunyi Wu
- Core Research Laboratory, The Second Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, No.157 XiWu Road, Xincheng District, Xi'an, 710004, China
| | - Junli Zhang
- Department of Rheumatology and Immunology, Xi'an Institute of Rheumatology, Xi'an No.5 Hospital, No. 112 XiGuanZhengJie, Lian Hu District, Xi'an, 710082, Shaanxi Province, China.,Department of Rheumatology and Immunology, Shaanxi Hospital of Integrated Traditional Chinese and Western Medicine, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Shaanxi University of Chinese Medicine, No. 112 XiGuanZhengJie, Lian Hu District, Xi'an, 710082, Shaanxi Province, China
| | - Yanyan Lv
- Department of Rheumatology and Immunology, Xi'an Institute of Rheumatology, Xi'an No.5 Hospital, No. 112 XiGuanZhengJie, Lian Hu District, Xi'an, 710082, Shaanxi Province, China
| | - Suzhi Wang
- Department of Rheumatology and Immunology, Xi'an Institute of Rheumatology, Xi'an No.5 Hospital, No. 112 XiGuanZhengJie, Lian Hu District, Xi'an, 710082, Shaanxi Province, China
| | - Liping Liu
- Department of Rheumatology and Immunology, Xi'an Institute of Rheumatology, Xi'an No.5 Hospital, No. 112 XiGuanZhengJie, Lian Hu District, Xi'an, 710082, Shaanxi Province, China.,Department of Rheumatology and Immunology, Shaanxi Hospital of Integrated Traditional Chinese and Western Medicine, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Shaanxi University of Chinese Medicine, No. 112 XiGuanZhengJie, Lian Hu District, Xi'an, 710082, Shaanxi Province, China
| | - Dan Liu
- Department of Rheumatology and Immunology, Xi'an Institute of Rheumatology, Xi'an No.5 Hospital, No. 112 XiGuanZhengJie, Lian Hu District, Xi'an, 710082, Shaanxi Province, China. .,Department of Rheumatology and Immunology, Shaanxi Hospital of Integrated Traditional Chinese and Western Medicine, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Shaanxi University of Chinese Medicine, No. 112 XiGuanZhengJie, Lian Hu District, Xi'an, 710082, Shaanxi Province, China. .,Core Research Laboratory, The Second Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, No.157 XiWu Road, Xincheng District, Xi'an, 710004, China.
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10
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Zeng Y, Cui Z, Liu J, Chen J, Tang S. MicroRNA-29b-3p Promotes Human Retinal Microvascular Endothelial Cell Apoptosis via Blocking SIRT1 in Diabetic Retinopathy. Front Physiol 2020; 10:1621. [PMID: 32063865 PMCID: PMC7000655 DOI: 10.3389/fphys.2019.01621] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 12/24/2019] [Indexed: 12/23/2022] Open
Abstract
Background Diabetic retinopathy (DR) is a main complication of diabetes mellitus (DM). Recent studies have implicated microRNAs in human retinal microvascular endothelial cell (HRMEC) dysfunction. In this study, we aim to investigate the apoptotic promotion of miR-29b-3p by blocking SIRT1 in HRMEC for DR situation. Method Blood samples were obtained from DR patients and controls. Dual-luciferase reporter assay using HEK-293T cells was performed to show the direct interaction of miR-29b-3p and the 3′UTR of SIRT1. HRMECs were exposed to 5.5 mmol/L of glucose (normal control), 5.5 mmol/L of glucose and 24.5 mmol/L of mannitol (osmotic pressure control), 30 mmol/L of glucose [hyperglycemia (HG)], 150 μmol/L of CoCl2 (hypoxia), and 30 mmol/L of glucose plus 150 μmol/L of CoCl2 (HG-CoCl2). To identify the regulating relationship between miR-29b-3p and SIRT1, HRMECs were transfected with miR-29b-3p mimics/inhibitors or their negative controls. SRT1720 was used as a SIRT1 agonist. Cell viability was assessed with the cell counting kit-8 (CCK-8) assay, and apoptotic cells were stained by one-step terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay kit. Gene and protein expression were assayed by quantitative real-time reverse transcriptase-PCR (RT-qPCR) and western blotting separately. Result MiR-29b-3p was upregulated to 3.2-fold, and SIRT1 protein was downregulated to 65% in DR patients. Dual-luciferase reporter assay showed the direct interaction of miR-29b-3p and SIRT1. HRMECs were identified as >95% positive for CD31 and von Willebrand factor (vWF). MiR-29b-3p and Bax/Bcl-2 ratio was upregulated, whereas SIRT1 was downregulated in HRMECs in the HG-CoCl2 condition. Decreased cell viability and upregulated apoptosis were also found in HRMECs of the HG-CoCl2 condition. Upregulated miR-29b-3p decreased the expression of SIRT1 and increased the ratio of Bax/Bcl-2, whereas downregulated miR-29b-3p increased the expression of SIRT1 protein and downregulated the ratio of Bax/Bcl-2. SRT1720 rescued miR-29b-3p-induced HRMEC apoptosis via upregulating the expression of SIRT1 protein. Conclusion The dysregulation of miR-29b-3p/SIRT1 is a potential mechanism of HRMEC apoptosis in DR. MiR-29b-3p/SIRT1 may be a potential therapeutic target for DR.
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Affiliation(s)
- Yong Zeng
- Aier School of Ophthalmology, Central South University, Changsha, China
| | | | - Jian Liu
- Aier Eye Institute, Changsha, China
| | - Jiansu Chen
- Aier School of Ophthalmology, Central South University, Changsha, China.,Aier Eye Institute, Changsha, China.,Key Laboratory for Regenerative Medicine, Ministry of Education, Jinan University, Guangzhou, China.,Institute of Ophthalmology, Medical College, Jinan University, Guangzhou, China
| | - Shibo Tang
- Aier School of Ophthalmology, Central South University, Changsha, China.,Aier Eye Institute, Changsha, China.,Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Beijing, China
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Shan W, Chen W, Zhao X, Pei A, Chen M, Yu Y, Zheng Y, Zhu S. Long noncoding RNA TUG1 contributes to cerebral ischaemia/reperfusion injury by sponging mir-145 to up-regulate AQP4 expression. J Cell Mol Med 2020; 24:250-259. [PMID: 31709761 PMCID: PMC6933375 DOI: 10.1111/jcmm.14712] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 07/26/2019] [Accepted: 08/29/2019] [Indexed: 12/17/2022] Open
Abstract
Emerging studies have shown that long noncoding RNA (lncRNA) TUG1 (taurine-up-regulated gene 1) plays critical roles in multiple biological processes. However, the expression and function of lncRNA TUG1 in cerebral ischaemia/reperfusion injury have not been reported yet. In this study, we found that LncRNA TUG1 expression was significantly up-regulated in cultured MA-C cells exposed to OGD/R injury, while similar results were also observed in MCAO model. Mechanistically, knockdown of TUG1 decreased lactate dehydrogenase levels and the ratio of apoptotic cells and promoted cell survival in vitro. Moreover, knockdown of TUG1 decreased AQP4 (encoding aquaporin 4) expression to attenuate OGD/R injury. TUG1 could interact directly with miR-145, and down-regulation of miR-145 could efficiently reverse the function of TUG1 siRNA on AQP4 expression. Finally, the TUG1 shRNA reduced the infarction area and cell apoptosis in I/R mouse brains in vivo. In summary, our results suggested that lncRNA TUG1 may function as a competing endogenous RNA (ceRNA) for miR-145 to induce cell damage, possibly providing a new therapeutic target in cerebral ischaemia/reperfusion injury.
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Affiliation(s)
- Weifeng Shan
- Department of AnesthesiologyThe 1st Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhouChina
| | - Wei Chen
- Cancer Institute of Integrated traditional Chinese and Western MedicineZhejiang Academy of Traditional Chinese MedicineTongde hospital of Zhejiang ProvinceHangzhouChina
| | - Xian Zhao
- Department of AnesthesiologyThe 1st Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhouChina
| | - Aijie Pei
- Department of AnesthesiologyThe 1st Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhouChina
| | - Manli Chen
- Department of AnesthesiologyThe 1st Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhouChina
| | - Yang Yu
- Department of AnesthesiologyThe 1st Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhouChina
| | - Yueying Zheng
- Department of AnesthesiologyThe 1st Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhouChina
| | - Shengmei Zhu
- Department of AnesthesiologyThe 1st Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhouChina
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Zhang H, Zhou J, Zhang M, Yi Y, He B. Upregulation of miR-376c-3p alleviates oxygen-glucose deprivation-induced cell injury by targeting ING5. Cell Mol Biol Lett 2019; 24:67. [PMID: 31844418 PMCID: PMC6894250 DOI: 10.1186/s11658-019-0189-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 11/14/2019] [Indexed: 12/14/2022] Open
Abstract
Background The expression level of miR-376c-3p is significantly lower in infants with neonatal hypoxic-ischemic encephalopathy (HIE) than in healthy infants. However, the biological function of this microRNA remains largely elusive. Methods We used PC-12 and SH-SY5Y cells to establish an oxygen–glucose deprivation (OGD) cell injury model to mimic HIE in vitro. The miR-376c-3p expression levels were measured using quantitative reverse transcription PCR. The CCK-8 assay and flow cytometry were utilized to evaluate OGD-induced cell injury. The association between miR-376c-3p and inhibitor of growth 5 (ING5) was validated using the luciferase reporter assay. Western blotting was conducted to determine the protein expression of CDK4, cyclin D1, Bcl-2 and Bax. Results MiR-376c-3p was significantly downregulated in the OGD-induced cell injury model. Its overexpression elevated cell viability and impaired cell cycle G0/G1 phase arrest and apoptosis in PC-12 and SH-SY5Y cells after OGD. Downregulation of miR-376c-3p gave the opposite results. We further demonstrated that ING5 was a negatively regulated target gene of miR-376c-3p. Importantly, ING5 knockdown had a similar effect to miR-376c-3p-mediated protective effects against cell injury induced by OGD. Its overexpression abolished these protective effects. Conclusion Our data suggest that miR-376c-3p downregulated ING5 to exert protective effects against OGD-induced cell injury in PC-12 and SH-SY5Y cells. This might represent a novel therapeutic approach for neonatal HIE treatment.
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Affiliation(s)
- Heng Zhang
- Department of Pediatrics, Renmin Hospital of Wuhan University, Hubei Province, 430060 China
| | - Jie Zhou
- Department of Pediatrics, Renmin Hospital of Wuhan University, Hubei Province, 430060 China
| | - Mingxia Zhang
- Department of Pediatrics, Renmin Hospital of Wuhan University, Hubei Province, 430060 China
| | - Yanjie Yi
- Department of Pediatrics, Renmin Hospital of Wuhan University, Hubei Province, 430060 China
| | - Bing He
- Department of Pediatrics, Renmin Hospital of Wuhan University, Hubei Province, 430060 China
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Klatt CL, Theis V, Hahn S, Theiss C, Matschke V. Deregulated miR-29b-3p Correlates with Tissue-Specific Activation of Intrinsic Apoptosis in An Animal Model of Amyotrophic Lateral Sclerosis. Cells 2019; 8:cells8091077. [PMID: 31547454 PMCID: PMC6770833 DOI: 10.3390/cells8091077] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 09/06/2019] [Accepted: 09/11/2019] [Indexed: 12/18/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is one of the most common incurable motor neuron disorders in adults. The majority of all ALS cases occur sporadically (sALS). Symptoms of ALS are caused by a progressive degeneration of motor neurons located in the motor cortex and spinal cord. The question arises why motor neurons selectively degenerate in ALS, while other cells and systems appear to be spared the disease. Members of the intrinsic apoptotic pathway are frequent targets of altered microRNA expression. Therefore, microRNAs and their effects on cell survival are subject of controversial debates. In this study, we investigated the expression of numerous members of the intrinsic apoptotic cascade by qPCR, western blot, and immunostaining in two different regions of the CNS of wobbler mice. Further we addressed the expression of miR-29b-3p targeting BMF, Bax, and, Bak, members of the apoptotic pathway. We show a tissue-specific differential expression of BMF, Bax, and cleaved-Caspase 3 in wobbler mice. An opposing regulation of miR-29b-3p expression in the cerebellum and cervical spinal cord of wobbler mice suggests different mechanisms regulating the intrinsic apoptotic pathway. Based on our findings, it could be speculated that miR-29b-3p might regulate antiapoptotic survival mechanisms in CNS areas that are not affected by neurodegeneration in the wobbler mouse ALS model.
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Affiliation(s)
- Christina L Klatt
- Ruhr University Bochum, Medical Faculty, Institute of Anatomy, Department of Cytology, 44801 Bochum, Germany.
| | - Verena Theis
- Ruhr University Bochum, Medical Faculty, Institute of Anatomy, Department of Cytology, 44801 Bochum, Germany.
| | - Stephan Hahn
- Ruhr University Bochum, Clinical Research Center, Department of Molecular Gastrointestinal Oncology, 44801 Bochum, Germany.
| | - Carsten Theiss
- Ruhr University Bochum, Medical Faculty, Institute of Anatomy, Department of Cytology, 44801 Bochum, Germany.
| | - Veronika Matschke
- Ruhr University Bochum, Medical Faculty, Institute of Anatomy, Department of Cytology, 44801 Bochum, Germany.
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