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Wu X, Yuan P, Wei N, Ma C, Fu M, Wu W. Extracellular vesicles derived from "serum and glucose" deprived HUCMSCs promoted skin wound healing through enhanced angiogenesis. Mol Cell Biochem 2024:10.1007/s11010-024-05058-1. [PMID: 38967721 DOI: 10.1007/s11010-024-05058-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 06/29/2024] [Indexed: 07/06/2024]
Abstract
Extracellular vesicles (EVs) produced from MSCs were currently considered as a novel therapeutic agent for skin tissue regeneration and repair. Preconditioning stem cells may activate more molecular pathways and release more bioactive agents. In this study, we obtained EVs from normal (N-EVs) and serum- and glucose-deprived (SGD-EVs) human umbilical cord mesenchymal stem cells (HUCMSCs), and showed that SGD-EVs promoted the migration, proliferation, and tube formation of HUVECs in vitro. In vivo experiments utilizing a rat model show that both N-EVs and SGD-EVs boosted angiogenesis of skin defects and accelerated skin wound healing, while treating wounds with SGD-EVs led to faster skin healing and enhanced angiogenesis. miRNA sequencing showed that miR-29a-3p was abundant in SGD-EVs, and overexpressing miR-29a-3p enhanced the angiogenic ability of HUVECs, while inhibiting miR-29a-3p presented the opposite effect. Further studies demonstrated that miR-29a-3p directly targeted CTNNBIP1, which mediated angiogenesis of HUCMSCs-derived EVs through inhibiting CTNNBIP1 to activate Wnt/β-catenin signaling pathway. Taken together, these findings suggested that SGD-EVs promote angiogenesis via transferring miR-29a-3p, and activation of Wnt/β-catenin signaling pathway played a crucial role in SGD-EVs-induced VEGFA production during wound angiogenesis. Our results offered a new avenue for modifying EVs to enhance tissue angiogenesis and augment its role in skin repair.
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Affiliation(s)
- Xiaopeng Wu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Oral & Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, 145 Changle West Road, Xincheng District, Xi'an, 710032, Shaanxi, China
- College of Life Science, Northwest University, Xi'an, 710069, China
| | - Pingping Yuan
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Oral & Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, 145 Changle West Road, Xincheng District, Xi'an, 710032, Shaanxi, China
| | - Na Wei
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Oral & Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, 145 Changle West Road, Xincheng District, Xi'an, 710032, Shaanxi, China
- College of Life Science, Northwest University, Xi'an, 710069, China
| | - Chaoqun Ma
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Oral & Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, 145 Changle West Road, Xincheng District, Xi'an, 710032, Shaanxi, China
| | - Mingdi Fu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Oral & Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, 145 Changle West Road, Xincheng District, Xi'an, 710032, Shaanxi, China
| | - Wei Wu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Oral & Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, 145 Changle West Road, Xincheng District, Xi'an, 710032, Shaanxi, China.
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2
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Zhong X, Wang H. LncRNA JHDM1D-AS1 promotes osteogenic differentiation of periodontal ligament cells by targeting miR-532-5p to activate IGF1R signaling. J Periodontal Res 2024; 59:220-230. [PMID: 37950511 DOI: 10.1111/jre.13209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 10/17/2023] [Accepted: 10/30/2023] [Indexed: 11/12/2023]
Abstract
OBJECTIVE The aim of this study was to explore the mechanism underlying periodontal ligament cells (PDLCs) osteogenic differentiation. BACKGROUND Periodontitis causes damage to tooth-supporting apparatus and eventually leads to tooth loss. PDLCs hold great promise in periodontal regeneration due to their osteogenic features. METHODS The expression of osteogenic markers, lncRNA JHDM1D-AS1, miR-532-5p and IGF1R was examined. For osteogenic differentiation, primary human PDLCs (hPDLCs) were cultured in an osteogenic medium, and it was assessed by ALP activity and Alizarin Red staining. The interaction between JHDM1D-AS1, miR-532-5p and IGF1R was analyzed via dual luciferase, RIP and RNA pull-down assays. RESULTS JHDM1D-AS1 was up-regulated during osteogenic differentiation and its silencing inhibited hPDLC osteogenic differentiation. JHDM1D-AS1 worked as a miR-532-5p sponge in hPDLCs. miR-532-5p directly targeted IGF1R to suppress its expression, and miR-532-5p knockdown facilitated osteogenic differentiation of hPDLCs. Overexpression of IGF1R promoted osteogenic differentiation of hPDLCs via activating Notch/HES1 signaling in hPDLCs. CONCLUSION JHDM1D-AS1 promotes osteogenic differentiation of hPDLCs via sponging miR-532-5p to facilitate IGF1R expression and activate Notch/HES1 signaling.
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Affiliation(s)
- Xiaohuan Zhong
- Center of Stomatology, Xiangya Hospital, Central South University, Changsha, Hunan Province, P.R. China
| | - Huixin Wang
- Center of Stomatology, Xiangya Hospital, Central South University, Changsha, Hunan Province, P.R. China
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3
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Li S, Zhu P, Wang Y, Huang S, Wu Z, He J, Hu X, Wang Y, Yuan Y, Zhao B, Ma G, Li Y. miR-181a targets PTEN to mediate the neuronal injury caused by oxygen-glucose deprivation and reoxygenation. Metab Brain Dis 2023; 38:2077-2091. [PMID: 37178238 DOI: 10.1007/s11011-023-01219-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 04/18/2023] [Indexed: 05/15/2023]
Abstract
Evidence suggests that the microRNA-181 (miR-181) family performs various roles in the pathophysiology of cerebral ischemia and reperfusion injury (CIRI). MiR-181a has been identified as a critical determinant of neuronal survival. Moreover, the significance of miR-181a in controlling neuronal death after CIRI has received little attention. The objective of this study was to assess the role of miR-181a in neuronal cell injury after CIRI. To mimic the in-vitro and in-vivo CIRI, we developed an oxygen-glucose deficiency/reoxygenation (OGD/R) model in SH-SY5Y cells and a transient middle cerebral artery occlusion model in rats. MiR-181a expression was significantly higher in both in-vivo and in-vitro CIRI models. The overexpression of miR-181a increased cell damage and oxidative stress caused by OGD/R, whereas inhibition of miR-181a reduced both. PTEN has also been found to be a direct miR-181a target. PTEN overexpression reduced cell apoptosis and oxidative stress induced by miR-181a upregulation under an OGD/R condition. Furthermore, we found that the rs322931 A allele was related to increased miR-181a levels in IS peripheral blood and higher susceptibility to IS. The current results offer new insights into the understanding of the molecular pathophysiology of CIRI, as well as possible new treatment candidates.
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Affiliation(s)
- Shengnan Li
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
- Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
- Institute of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
| | - Peiyi Zhu
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
- Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
| | - Yajun Wang
- Shunde Maternal and Children's Hospital, Maternal and Children's Health Research Institute, Guangdong Medical University, Shunde, 528300, China
| | - Shaoting Huang
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
- Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
- Institute of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
| | - Zhaochun Wu
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
- Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
| | - Jiawen He
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
- Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
| | - Xingjuan Hu
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
- Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
| | - Ying Wang
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
- Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
| | - Yanquan Yuan
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
- Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
| | - Bin Zhao
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
- Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
- Institute of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China
| | - Guoda Ma
- Shunde Maternal and Children's Hospital, Maternal and Children's Health Research Institute, Guangdong Medical University, Shunde, 528300, China.
| | - You Li
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China.
- Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China.
- Institute of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, China.
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Mongelli A, Mengozzi A, Geiger M, Gorica E, Mohammed SA, Paneni F, Ruschitzka F, Costantino S. Mitochondrial epigenetics in aging and cardiovascular diseases. Front Cardiovasc Med 2023; 10:1204483. [PMID: 37522089 PMCID: PMC10382027 DOI: 10.3389/fcvm.2023.1204483] [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: 04/12/2023] [Accepted: 06/29/2023] [Indexed: 08/01/2023] Open
Abstract
Mitochondria are cellular organelles which generate adenosine triphosphate (ATP) molecules for the maintenance of cellular energy through the oxidative phosphorylation. They also regulate a variety of cellular processes including apoptosis and metabolism. Of interest, the inner part of mitochondria-the mitochondrial matrix-contains a circular molecule of DNA (mtDNA) characterised by its own transcriptional machinery. As with genomic DNA, mtDNA may also undergo nucleotide mutations that have been shown to be responsible for mitochondrial dysfunction. During physiological aging, the mitochondrial membrane potential declines and associates with enhanced mitophagy to avoid the accumulation of damaged organelles. Moreover, if the dysfunctional mitochondria are not properly cleared, this could lead to cellular dysfunction and subsequent development of several comorbidities such as cardiovascular diseases (CVDs), diabetes, respiratory and cardiovascular diseases as well as inflammatory disorders and psychiatric diseases. As reported for genomic DNA, mtDNA is also amenable to chemical modifications, namely DNA methylation. Changes in mtDNA methylation have shown to be associated with altered transcriptional programs and mitochondrial dysfunction during aging. In addition, other epigenetic signals have been observed in mitochondria, in particular the interaction between mtDNA methylation and non-coding RNAs. Mitoepigenetic modifications are also involved in the pathogenesis of CVDs where oxygen chain disruption, mitochondrial fission, and ROS formation alter cardiac energy metabolism leading to hypertrophy, hypertension, heart failure and ischemia/reperfusion injury. In the present review, we summarize current evidence on the growing importance of epigenetic changes as modulator of mitochondrial function in aging. A better understanding of the mitochondrial epigenetic landscape may pave the way for personalized therapies to prevent age-related diseases.
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Affiliation(s)
- Alessia Mongelli
- Center for Translational and Experimental Cardiology (CTEC), Department of Cardiology, Zurich University Hospital and University of Zürich, Zurich, Switzerland
| | - Alessandro Mengozzi
- Center for Translational and Experimental Cardiology (CTEC), Department of Cardiology, Zurich University Hospital and University of Zürich, Zurich, Switzerland
| | - Martin Geiger
- Center for Translational and Experimental Cardiology (CTEC), Department of Cardiology, Zurich University Hospital and University of Zürich, Zurich, Switzerland
| | - Era Gorica
- Center for Translational and Experimental Cardiology (CTEC), Department of Cardiology, Zurich University Hospital and University of Zürich, Zurich, Switzerland
| | - Shafeeq Ahmed Mohammed
- Center for Translational and Experimental Cardiology (CTEC), Department of Cardiology, Zurich University Hospital and University of Zürich, Zurich, Switzerland
| | - Francesco Paneni
- Center for Translational and Experimental Cardiology (CTEC), Department of Cardiology, Zurich University Hospital and University of Zürich, Zurich, Switzerland
- Department of Cardiology, University Heart Center, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Frank Ruschitzka
- Center for Translational and Experimental Cardiology (CTEC), Department of Cardiology, Zurich University Hospital and University of Zürich, Zurich, Switzerland
- Department of Cardiology, University Heart Center, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Sarah Costantino
- Center for Translational and Experimental Cardiology (CTEC), Department of Cardiology, Zurich University Hospital and University of Zürich, Zurich, Switzerland
- Department of Cardiology, University Heart Center, University Hospital Zurich, University of Zurich, Zurich, Switzerland
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Ruan Y, Deng X, Liu J, Xiao X, Yang Z. Identification of miRNAs in extracellular vesicles as potential diagnostic markers for pediatric epilepsy and drug-resistant epilepsy via bioinformatics analysis. Front Pediatr 2023; 11:1199780. [PMID: 37469680 PMCID: PMC10352456 DOI: 10.3389/fped.2023.1199780] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 06/22/2023] [Indexed: 07/21/2023] Open
Abstract
Background Pediatric epilepsy (PE) is a common neurological disease. However, many challenges regarding the clinical diagnosis and treatment of PE and drug-resistant epilepsy (DRE) remain unsettled. Our study aimed to identify potential miRNA biomarkers in children with epilepsy and drug-resistant epilepsy by scrutinizing differential miRNA expression profiles. Methods In this study, miRNA expression profiles in plasma extracellular vesicles (EV) of normal controls, children with drug-effective epilepsy (DEE), and children with DRE were obtained. In addition, differential analysis, transcription factor (TF) enrichment analysis, Gene ontology (GO) analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses, and target gene prediction were used to identify specifically expressed miRNAs and their potential mechanisms of action. Potential diagnostic markers for DRE were identified using machine learning algorithms, and their diagnostic efficiency was assessed by the receiver operating characteristic curve (ROC). Results The hsa-miR-1307-3p, hsa-miR-196a-5p, hsa-miR-199a-3p, and hsa-miR-21-5p were identified as diagnostic markers for PE, with values of area under curve (AUC) 0.780, 0.840, 0.832, and 0.816, respectively. In addition, the logistic regression model incorporating these four miRNAs had an AUC value of 0.940, and its target gene enrichment analysis highlighted that these miRNAs were primarily enriched in the PI3K-Akt, MAPK signaling pathways, and cell cycle. Furthermore, hsa-miR-99a-5p, hsa-miR-532-5p, hsa-miR-181d-5p, and hsa-miR-181a-5p showed good performance in differentiating children with DRE from those with DEE, with AUC values of 0.737 (0.534-0.940), 0.737 (0.523-0.952), 0.788 (0.592-0.985), and 0.788 (0.603-0.974), respectively. Conclusion This study characterized the expression profile of miRNAs in plasma EVs of children with epilepsy and identified miRNAs that can be used for the diagnosis of DRE.
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Affiliation(s)
- Yucai Ruan
- Department of Pediatrics, Yue Bei People’s Hospital, Shantou University Medical College, Shaoguan, China
| | - Xuhui Deng
- Department of Neurology, Yue Bei People’s Hospital, Shantou University Medical College, Shaoguan, China
| | - Jun Liu
- Medical Research Center and Clinical Laboratory Medicine, Yue Bei People’s Hospital, Shantou University Medical College, Shaoguan, China
| | - Xiaobing Xiao
- Department of Pediatrics, Yue Bei People’s Hospital, Shantou University Medical College, Shaoguan, China
| | - Zhi Yang
- Department of Pediatrics, Yue Bei People’s Hospital, Shantou University Medical College, Shaoguan, China
- Department of Neurology, Yue Bei People’s Hospital, Shantou University Medical College, Shaoguan, China
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Zhang M, Wang J, Li J, Kong F, Lin S. miR-101-3p improves neuronal morphology and attenuates neuronal apoptosis in ischemic stroke in young mice by downregulating HDAC9. Transl Neurosci 2023; 14:20220286. [PMID: 37250142 PMCID: PMC10224617 DOI: 10.1515/tnsci-2022-0286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 04/10/2023] [Accepted: 04/19/2023] [Indexed: 05/31/2023] Open
Abstract
Objective MiRNAs play a key role in ischemic stroke (IS). Although miR-101-3p can participate in multiple disease processes, its role and mechanism in IS are not clear. The aim of the present study was to observe the effect of miR-101-3p activation on IS in young mice and the role of HDAC9 in this effect. Methods The young mice were first subjected to transient middle cerebral artery occlusion (tMCAO) or sham surgery, and the cerebral infarct area was assessed with 2,3,5-triphenyltetrazolium chloride staining. Meanwhile, the expressions of miR-101-3p and HDAC9 were tested using RT-qPCR or western blot. Besides, neuron morphology and apoptosis were confirmed using Nissl staining and TUNEL staining. Results We first verified that miR-101-3p was downregulated and HDAC9 was upregulated in the brain tissue of tMCAO young mice. Moreover, we proved that overexpression of miR-101-3p could improve cerebral infarction, neuronal morphology, and neuronal apoptosis in tMCAO young mice by lowering the expression of HDAC9. Conclusions Activation of miR-101-3p can protect against IS in young mice, and its mechanism is relevant to the inhibition of HDAC9. Therefore, miR-101-3p and HDAC9 might be the latent targets for IS therapy.
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Affiliation(s)
- Mengru Zhang
- The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, 518000, China
| | - Jianjun Wang
- The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, 518000, China
- Encephalopathy and Psychology Department, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, 518000, China
| | - Jinfang Li
- The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, 518000, China
- Encephalopathy and Psychology Department, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, 518000, China
| | - Fanxin Kong
- The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, 518000, China
- Encephalopathy and Psychology Department, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, 518000, China
| | - Songjun Lin
- The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, 518000, China
- Encephalopathy and Psychology Department, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, 518000, China
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Mao R, Zong N, Hu Y, Chen Y, Xu Y. Neuronal Death Mechanisms and Therapeutic Strategy in Ischemic Stroke. Neurosci Bull 2022; 38:1229-1247. [PMID: 35513682 PMCID: PMC9554175 DOI: 10.1007/s12264-022-00859-0] [Citation(s) in RCA: 76] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 01/18/2022] [Indexed: 12/17/2022] Open
Abstract
Ischemic stroke caused by intracranial vascular occlusion has become increasingly prevalent with considerable mortality and disability, which gravely burdens the global economy. Current relatively effective clinical treatments are limited to intravenous alteplase and thrombectomy. Even so, patients still benefit little due to the short therapeutic window and the risk of ischemia/reperfusion injury. It is therefore urgent to figure out the neuronal death mechanisms following ischemic stroke in order to develop new neuroprotective strategies. Regarding the pathogenesis, multiple pathological events trigger the activation of cell death pathways. Particular attention should be devoted to excitotoxicity, oxidative stress, and inflammatory responses. Thus, in this article, we first review the principal mechanisms underlying neuronal death mediated by these significant events, such as intrinsic and extrinsic apoptosis, ferroptosis, parthanatos, pyroptosis, necroptosis, and autophagic cell death. Then, we further discuss the possibility of interventions targeting these pathological events and summarize the present pharmacological achievements.
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Affiliation(s)
- Rui Mao
- Department of Neurology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Ningning Zong
- Department of Neurology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Yujie Hu
- Department of Neurology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Ying Chen
- Department of Neurology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Yun Xu
- Department of Neurology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China.
- The State Key Laboratory of Pharmaceutical Biotechnology, Institute of Brain Science, Nanjing University, Nanjing, 210008, China.
- Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, 210008, China.
- Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing, 210008, China.
- Nanjing Neurology Clinic Medical Center, Nanjing, 210008, China.
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Wu R, Yun Q, Zhang J, Wang Z, Zhang X, Bao J. Knockdown of circular RNA tousled-like kinase 1 relieves ischemic stroke in middle cerebral artery occlusion mice and oxygen-glucose deprivation and reoxygenation-induced N2a cell damage. Bioengineered 2022; 13:3434-3449. [PMID: 35067172 PMCID: PMC8973970 DOI: 10.1080/21655979.2021.2024684] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Ischemic stroke (IS) is an essential contributor to the neurological morbidity and mortality throughout the world. The significance of circular RNA tousled-like kinase 1 (circTLK1) in IS has been documented. This study set out to explore the mechanism of circTLK1 in IS. Middle cerebral artery occlusion (MCAO) mouse models in vivo and oxygen-glucose deprivation and reoxygenation (OGD/R) cell models in vitro were first established, followed by evaluation of infarct volume and neurological impairment, and cell viability and apoptosis. The expression patterns of circTLK1, miR-26a-5p, phosphatase and tensin homolog (PTEN), insulin-like growth factor type 1 receptor (IGF-1 R), and glucose transporter type 1 (GLUT1) were detected by RT-qPCR and Western blotting. Co-localization of circTLK1 and miR-26a-5p in N2a cells was tested by fluorescence in situ hybridization assay. The binding relationships among circTLK1, PTEN, and miR-26a-5p were verified by dual-luciferase assay and RNA pull-down. circTLK1 and PTEN were highly expressed while miR-26a-5p was under-expressed in IS models. circTLK1 knockdown decreased infarct volume and neurological impairment in MCAO mouse models and relieved OGD/R-induced neuronal injury in vitro. circTLK1 and miR-26a-5p were co-located in the N2a cell cytoplasm. circTLK1 regulated PTEN as a sponge of miR-26a-5p. PTEN positively regulated IGF-1 R and GLUT1 expressions. miR-26a-5p inhibitor annulled the repressive effects of circTLK1 silencing on OGD/R-induced neuronal injury. sh-PTEN partially annulled the effects of the miR-26a-5p inhibitor on OGD/R-induced neuronal injury. In conclusion, circTLK1 knockdown relieved IS via the miR-26a-5p/PTEN/IGF-1 R/GLUT1 axis. These results may provide a new direction to IS potential therapeutic targets.
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Affiliation(s)
- Rile Wu
- Department of Neurosurgery, Inner Mongolia People’s Hospital, Hohhot, China
| | - Qiang Yun
- Department of Neurosurgery, Inner Mongolia People’s Hospital, Hohhot, China
| | - Jianping Zhang
- Department of Neurosurgery, Inner Mongolia People’s Hospital, Hohhot, China
| | - Zhong Wang
- Department of Neurosurgery, Inner Mongolia People’s Hospital, Hohhot, China
| | - Xiaojun Zhang
- Department of Neurosurgery, Inner Mongolia People’s Hospital, Hohhot, China
| | - Jingang Bao
- Department of Neurosurgery, Inner Mongolia People’s Hospital, Hohhot, China
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ZHU P, ZHANG X, CHENG Z, YANG Q, LUAN H, WANG Z. MiR-206 is involved in neuroprotective effects of Dexmedetomidine in H2O2-induced SK-N-SH cells by targeting ANXA1. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.38221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Pin ZHU
- Nanjing Medical University, China
| | | | | | | | | | - Zhiping WANG
- Nanjing Medical University, China; Xuzhou Medical University, China
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Carini G, Musazzi L, Bolzetta F, Cester A, Fiorentini C, Ieraci A, Maggi S, Popoli M, Veronese N, Barbon A. The Potential Role of miRNAs in Cognitive Frailty. Front Aging Neurosci 2021; 13:763110. [PMID: 34867290 PMCID: PMC8632944 DOI: 10.3389/fnagi.2021.763110] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 10/19/2021] [Indexed: 12/30/2022] Open
Abstract
Frailty is an aging related condition, which has been defined as a state of enhanced vulnerability to stressors, leading to a limited capacity to meet homeostatic demands. Cognitive impairment is also frequent in older people, often accompanying frailty. Age is the main independent risk factor for both frailty and cognitive impairment, and compelling evidence suggests that similar age-associated mechanisms could underlie both clinical conditions. Accordingly, it has been suggested that frailty and cognitive impairment share common pathways, and some authors proposed "cognitive frailty" as a single complex phenotype. Nevertheless, so far, no clear common underlying pathways have been discovered for both conditions. microRNAs (miRNAs) have emerged as key fine-tuning regulators in most physiological processes, as well as pathological conditions. Importantly, miRNAs have been proposed as both peripheral biomarkers and potential molecular factors involved in physiological and pathological aging. In this review, we discuss the evidence linking changes of selected miRNAs expression with frailty and cognitive impairment. Overall, miR-92a-5p and miR-532-5p, as well as other miRNAs implicated in pathological aging, should be investigated as potential biomarkers (and putative molecular effectors) of cognitive frailty.
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Affiliation(s)
- Giulia Carini
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Laura Musazzi
- School of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
| | - Francesco Bolzetta
- Medical Department, Geriatric Unit, Azienda ULSS (Unità Locale Socio Sanitaria) 3 "Serenissima," Venice, Italy
| | - Alberto Cester
- Medical Department, Geriatric Unit, Azienda ULSS (Unità Locale Socio Sanitaria) 3 "Serenissima," Venice, Italy
| | - Chiara Fiorentini
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Alessandro Ieraci
- Department of Pharmaceutical Sciences, University of Milan, Milan, Italy
| | - Stefania Maggi
- Aging Branch, Neuroscience Institute, National Research Council, Padua, Italy
| | - Maurizio Popoli
- Department of Pharmaceutical Sciences, University of Milan, Milan, Italy
| | - Nicola Veronese
- Medical Department, Geriatric Unit, Azienda ULSS (Unità Locale Socio Sanitaria) 3 "Serenissima," Venice, Italy.,Geriatrics Section, Department of Medicine, University of Palermo, Palermo, Italy
| | - Alessandro Barbon
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
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11
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Lu Z, Li L, Wei L, Cai J, Wu J. Long non-coding RNA LOC366613 alleviates the cerebral ischemic injury via regulating the miR-532-5p/phosphatase and tensin homolog axis. Bioengineered 2021; 12:2511-2522. [PMID: 34251959 PMCID: PMC8806633 DOI: 10.1080/21655979.2021.1930966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 05/12/2021] [Indexed: 11/11/2022] Open
Abstract
Cerebral infarction (CI) has become a leading cause of death in China. Long non-coding RNAs (lncRNAs) are intensively involved in the progression of CI. Here, we aimed to investigate the effects of lncRNA LOC366613 (LOC366613) on cerebral I/R injury, as well as its possible mechanism. Transient middle cerebral artery occlusion (MCAO) was used to establish a mouse model of cerebral I/R, and the PC12 cell line was used to establish an in vitro oxygen-glucose deprivation (OGD) injury model. The MTT assay was used to determine cell viability, and qRT-PCR was used to determine RNA levels. Western blotting was conducted to detect protein expression levels. The TUNEL assay and flow cytometry were used to measure cell apoptosis, and 2,3,5-triphenyltetrazolium chloride (TTC) was used to determine cerebral infarct volume. Finally, RNA pull-down and luciferase activity assays were used to examine interactions between miR-532-5p and LOC366613, as well as between miR-532-5p and phosphatase and tensin homolog (PTEN). LOC366613 was overexpressed in patients with cerebral I/R injury. In PC12 cells, knockdown of LOC366613 reduced the apoptosis rate and lactic acid dehydrogenase (LDH) expression, while increasing cell viability. Moreover, miR-532-5p was shown to be a target of LOC366613, as predicted. Downregulation of miR-532-5p reversed the effects of LOC366613 knockdown on PC12 cell apoptosis, LDH release, and cell viability. Finally, PTEN was verified as a target of miR-532-5p. LOC366613 participates in cerebral I/R injury by regulating the miR-532-5p/PTEN axis, potentially providing a new CI treatment target.
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Affiliation(s)
- Zhenze Lu
- Guangzhou Medical University Graduate School
- Neurology, Department of Medicine, The University of Hong Kong-Shenzhen Hospital
| | - Ling Li
- Neurology, Department of Medicine, The University of Hong Kong-Shenzhen Hospital
| | - Lei Wei
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-Sen University
| | - Jifu Cai
- Neurology, Department of Medicine, The University of Hong Kong-Shenzhen Hospital
| | - Jun Wu
- Department of Neurology, Peking University Shenzhen Hospital
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12
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Zhu Z, Qian S, Lu X, Xu C, Wang Y, Zhang X, Yu X, Shen Y. Protective Properties of the Extract of Chrysanthemum on Patients with Ischemic Stroke. JOURNAL OF HEALTHCARE ENGINEERING 2021; 2021:3637456. [PMID: 34900185 PMCID: PMC8654548 DOI: 10.1155/2021/3637456] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/24/2021] [Accepted: 11/08/2021] [Indexed: 12/18/2022]
Abstract
Investigation of the protective effect of chrysanthemum extract in ischemic strokes patients is among the challenging issues with the traditional hospital system in general and smart technology-based hospitals in particular. In this study, we have evaluated the protective effect of chrysanthemum extract on patients with ischemic stroke by detecting the severity of stroke, neuronal indexes, and oxidative stress biomarkers. For this purpose, forty-six patients with ischemic stroke were randomly divided into the control group (n = 30) and chrysanthemum group (n = 30). The control group received standard stroke treatment, and the chrysanthemum group was treated with chrysanthemum extract 400 mg/day (200 mg/day, twice/day) on the basis of standard treatment. The groups were compared the effect of saffron capsules using the National Institute of Health Stoke Scale (NIHSS), serum neuron specific enolase (NSE), S100, brain-derived neurotrophic factor (BDNF), malondialdehyde (MDA), Su-peroxide dismutase (SOD), and total antioxidant capacity (TAC ) levels, at the time of first day and fourth day after treatment. On the first day after treatment, there was no significant difference in the NIHSS score, serum NSE, S100, BDNF, MDA, SOD, and TAC levels between the chrysanthemum group and the control group (P > 0.05). On the fourth day after treatment, the NIHSS, serum NSE, S100, and MDA levels were significantly reduced in the chrysanthemum group compared to the control group, while the BDNF, SOD, and TAC levels were higher (P < 0.05). In addition, compared to the levels on the first day, the NIHSS, serum NSE, S100, and MDA levels were significantly reduced, and the BDNF, SOD, and TAC levels were increased in the chrysanthemum group on the fourth day (P < 0.05). Chrysanthemum extract has the effects of scavenging oxygen free radicals and antioxidation and has a neuroprotective effect on ischemic stroke patients.
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Affiliation(s)
- Zhuoying Zhu
- Institute of Neurology, The Second Affiliated Hospital of Jiaxing University, Jiaxing 314000, China
| | - Shuxia Qian
- Institute of Neurology, The Second Affiliated Hospital of Jiaxing University, Jiaxing 314000, China
| | - Xudong Lu
- Institute of Neurology, The Second Affiliated Hospital of Jiaxing University, Jiaxing 314000, China
| | - Congying Xu
- Institute of Neurology, The Second Affiliated Hospital of Jiaxing University, Jiaxing 314000, China
| | - Yanping Wang
- Institute of Neurology, The Second Affiliated Hospital of Jiaxing University, Jiaxing 314000, China
| | - Xiaoling Zhang
- Institute of Neurology, The Second Affiliated Hospital of Jiaxing University, Jiaxing 314000, China
| | - Xin Yu
- Bengbu Medical College, Bengbu 233000, China
| | - Yufei Shen
- Institute of Neurology, The Second Affiliated Hospital of Jiaxing University, Jiaxing 314000, China
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13
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MicroRNA-532-5p upregulation protects neurological deficits after ischemic stroke through inhibition of BTB and CNC homology 1. Int Immunopharmacol 2021; 100:108003. [PMID: 34464885 DOI: 10.1016/j.intimp.2021.108003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 06/23/2021] [Accepted: 07/18/2021] [Indexed: 12/16/2022]
Abstract
OBJECTIVE MicroRNA (miR)-532-5p has been reported to protect against ischemic stroke (IS), while the underlying mechanism of miR-532-5p targeting BTB and CNC homology 1 (BACH1) in IS remains unknown. Thus, we aim to detect the role of miR-532-5p in IS via targeting BACH1. METHODS Blood samples were collected from IS patients and healthy controls. Rat middle cerebral artery occlusion (MCAO) models were established and intracerebrally injected with altered miR-532-5p or BACH1 plasmid vectors to reveal their roles in neurological function, brain tissue pathology and inflammation in MCAO. Expression of miR-532-5p and BACH1 in patients' blood samples and rat brain tissues was assessed, and the targeting relationship between miR-532-5p and BACH1 was confirmed. RESULTS MiR-532-5p was downregulated and BACH1 was upregulated in IS. BACH1 was targeted by miR-532-5p. Restored miR-532-5p or inhibited BACH1 improved neurological function and inhibited inflammation and apoptosis in MCAO rats. On the contrary, miR-532-5p reduction or BACH1 overexpression had totally opposite effects on MCAO rats. The protective role of miR-532-5p for MCAO rats was reversed by upregulated BACH1. CONCLUSION MiR-532-5p upregulation protects against neurological deficits after IS through inhibition of BACH1.
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14
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Shi Y, Yi Z, Zhao P, Xu Y, Pan P. MicroRNA-532-5p protects against cerebral ischemia-reperfusion injury by directly targeting CXCL1. Aging (Albany NY) 2021; 13:11528-11541. [PMID: 33867350 PMCID: PMC8109118 DOI: 10.18632/aging.202846] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Accepted: 03/14/2021] [Indexed: 01/07/2023]
Abstract
We investigated the function of microRNA (miR)-532-5p in cerebral ischemia-reperfusion injury (CI/RI) and the underlying mechanisms using oxygen-glucose deprivation and reperfusion (OGD/R)-treated SH-SY5Y cells and middle cerebral artery occlusion (MCAO) model rats. MiR-532-5p levels were significantly downregulated in OGD/R-treated SH-SY5Y cells and the brain tissues of MCAO model rats. MiR-532-5p overexpression significantly reduced apoptosis, reactive oxygen species (ROS), and inflammation in the OGD/R-induced SH-SY5Y cells. Bioinformatics analysis using the targetscan and miRDB databases as well as dual luciferase reporter assays confirmed that miR-532-5p directly binds to the 3’UTR of C-X-C Motif Ligand 1 (CXCL1). Methylation-specific PCR (MSP) analysis showed that miR-532-5p expression was reduced in OGD/R-treated SH-SY5Y cells because of miR-532-5p promoter hypermethylation. Moreover, 5-azacytidine, a methylation inhibitor, restored miR-532-5p expression in OGD/R-treated SH-SY5Y cells. Brain tissues of MCAO model rats showed significantly increased cerebral infarction areas, cerebral water, neuronal apoptosis, and activated CXCL1/CXCR2/NF-κB signaling, but these effects were alleviated by intraventricular injection of miR-532-5p agomir. These findings demonstrate that miR-532-5p overexpression significantly reduces in vitro and in vivo CI/RI by targeting CXCL1. Thus, miR-532-5p is a potential therapeutic target for patients with CI/RI.
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Affiliation(s)
- Yuanyuan Shi
- Department of Neurology and Central Laboratory, The Yancheng School of Clinical Medicine of Nanjing Medical University, Yancheng 224001, Jiangsu, China
| | - Zhongquan Yi
- Department of Neurology and Central Laboratory, The Yancheng School of Clinical Medicine of Nanjing Medical University, Yancheng 224001, Jiangsu, China
| | - Panwen Zhao
- Department of Neurology and Central Laboratory, The Yancheng School of Clinical Medicine of Nanjing Medical University, Yancheng 224001, Jiangsu, China
| | - Yun Xu
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing 210008, Jiangsu, China
| | - Pinglei Pan
- Department of Central Laboratory, The Yancheng School of Clinical Medicine of Nanjing Medical University, Yancheng 224001, Jiangsu, China
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15
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Circulating miR-342-5p serves as a diagnostic biomarker in patients with carotid artery stenosis and predicts the occurrence of the cerebral ischemic event. Ir J Med Sci 2021; 191:713-718. [PMID: 33844160 DOI: 10.1007/s11845-021-02623-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 04/04/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND Carotid artery stenosis (CAS) is an important risk factor for cerebral ischemia events (CIE). Previous studies have shown that microRNAs (miRNAs) are involved in the occurrence and development of CAS. AIMS The purpose of this study was to reveal the clinical diagnostic value of miR-342-5p for asymptomatic CAS (ACAS) and to evaluate its predictive value for the occurrence of CIE in patients. METHODS A total of 92 ACAS patients and 86 healthy controls were enrolled as subjects. The expression level of serum miR-342-5p was detected by qRT-PCR. The receiver operating characteristic (ROC) curve was used to detect the diagnostic value of miR-342-5p in ACAS. Kaplan-Meier survival and Cox regression analysis assessed the predictive value of miR-342-5p for the occurrence of CIE in ACAS patients. RESULTS The level of serum miR-342-5p in ACAS patients was significantly higher than that in healthy controls (P < 0.05). ROC curve showed the high diagnostic value of serum miR-342-5p, which could distinguish ACAS patients from healthy controls. Multivariate Cox regression analysis confirmed that miR-342-5p was an independent predictor (HR = 5.512, 95%CI = 1.370-22.176, P = 0.016). What is more, Kaplan-Meier analysis confirmed that patients with high miR-342-5p expression develop more CIE (log-rank, P = 0.020). CONCLUSIONS miR-342-5p was significantly overexpressed in ACAS. And the upregulation of serum miR-342-5p is a valuable diagnostic biomarker and can predict the occurrence of CIE.
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Wu R, Yun Q, Zhang J, Bao J. RETRACTED: Long non-coding RNA GAS5 retards neural functional recovery in cerebral ischemic stroke through modulation of the microRNA-455-5p/PTEN axis. Brain Res Bull 2021; 167:80-88. [PMID: 33309710 DOI: 10.1016/j.brainresbull.2020.12.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 12/04/2020] [Accepted: 12/04/2020] [Indexed: 02/07/2023]
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. Concern was raised about the reliability of the Western blot results in Figs. 1C and 4B+J, which appear to have the same eyebrow shaped phenotype as many other publications tabulated here (https://docs.google.com/spreadsheets/d/149EjFXVxpwkBXYJOnOHb6RhAqT4a2llhj9LM60MBffM/edit#gid=0). The journal requested the corresponding author comment on these concerns and provide the raw data. However, the authors were not responsive to the request for comment. Since original data could not be provided, the overall validity of the results could not be confirmed. Therefore, the Editor-in-Chief decided to retract the article.
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Affiliation(s)
- Rile Wu
- Department of Neurosurgery, Inner Mongolia People's Hospital, Hohhot, 010017, Inner Mongolia Autonomous Region, China.
| | - Qiang Yun
- Department of Neurosurgery, Inner Mongolia People's Hospital, Hohhot, 010017, Inner Mongolia Autonomous Region, China
| | - Jianping Zhang
- Department of Neurosurgery, Inner Mongolia People's Hospital, Hohhot, 010017, Inner Mongolia Autonomous Region, China
| | - Jingang Bao
- Department of Neurosurgery, Inner Mongolia People's Hospital, Hohhot, 010017, Inner Mongolia Autonomous Region, China
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Sabet Sarvestani F, Azarpira N. microRNAs Alterations of Myocardium and Brain Ischemia-Reperfusion Injury: Insight to Improve Infarction. Immunol Invest 2020; 51:51-72. [DOI: 10.1080/08820139.2020.1808672] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | - Negar Azarpira
- Transplant Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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18
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Huang Y, Wang Y, Ouyang Y. Elevated microRNA-135b-5p relieves neuronal injury and inflammation in post-stroke cognitive impairment by targeting NR3C2. Int J Neurosci 2020; 132:58-66. [PMID: 32713242 DOI: 10.1080/00207454.2020.1802265] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yiwen Huang
- Department of Emergency, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong, P.R. China
| | - Yuanyuan Wang
- Department of Neurology, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong, P.R. China
| | - Yingjun Ouyang
- Department of Neurology, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong, P.R. China
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