1
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Cong M, Li J, Wang L, Liu C, Zheng M, Zhou Q, Du M, Ye X, Feng M, Ye Y, Zhang S, Xu W, Lu Y, Wang C, Xia Y, Xie H, Zhang Y, He Q, Gong L, Gu Y, Sun H, Zhang Q, Zhao J, Ding F, Gu X, Zhou S. MircoRNA-25-3p in skin precursor cell-induced Schwann cell-derived extracellular vesicles promotes axon regeneration by targeting Tgif1. Exp Neurol 2024; 376:114750. [PMID: 38492636 DOI: 10.1016/j.expneurol.2024.114750] [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: 12/08/2023] [Revised: 02/20/2024] [Accepted: 03/08/2024] [Indexed: 03/18/2024]
Abstract
Nerve injury often leads to severe dysfunction because of the lack of axon regeneration in adult mammal. Intriguingly a series of extracellular vesicles (EVs) have the obvious ability to accelerate the nerve repair. However, the detailed molecular mechanisms to describe that EVs switch neuron from a transmitter to a regenerative state have not been elucidated. This study elucidated the microRNA (miRNA) expression profiles of two types of EVs that promote nerve regeneration. The functions of these miRNAs were screened in vitro. Among the 12 overlapping miRNAs, miR-25-3p was selected for further analysis as it markedly promoted axon regeneration both in vivo and in vitro. Furthermore, knockdown experiments confirmed that PTEN and Klf4, which are the major inhibitors of axon regeneration, were the direct targets of miR-25-3p in dorsal root ganglion (DRG) neurons. The utilization of luciferase reporter assays and functional tests provided evidence that miR-25-3p enhances axon regeneration by targeting Tgif1. Additionally, miR-25-3p upregulated the phosphorylation of Erk. Furthermore, Rapamycin modulated the expression of miR-25-3p in DRG neurons. Finally, the pro-axon regeneration effects of EVs were confirmed by overexpressing miR-25-3p and Tgif1 knockdown in the optic nerve crush model. Thus, the enrichment of miR-25-3p in EVs suggests that it regulates axon regeneration, proving a potential cell-free treatment strategy for nerve injury.
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Affiliation(s)
- Meng Cong
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu 226001, China
| | - Jiyu Li
- Department of Orthopedic Oncology, Second Affiliated Hospital of Naval Medical University, Shanghai 200003, China
| | - Lijuan Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu 226001, China
| | - Chang Liu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu 226001, China
| | - Mengru Zheng
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu 226001, China
| | - Qiang Zhou
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu 226001, China
| | - Mingzhi Du
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu 226001, China
| | - Xinli Ye
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu 226001, China
| | - Min Feng
- Department of Orthopedic Oncology, Second Affiliated Hospital of Naval Medical University, Shanghai 200003, China
| | - Yujiao Ye
- Medical School of Nantong University, Nantong, Jiangsu 226001, China
| | - Shuyu Zhang
- Medical School of Nantong University, Nantong, Jiangsu 226001, China
| | - Wenqing Xu
- Medical School of Nantong University, Nantong, Jiangsu 226001, China
| | - Yi Lu
- Medical School of Nantong University, Nantong, Jiangsu 226001, China
| | - Cheng Wang
- Medical School of Nantong University, Nantong, Jiangsu 226001, China
| | - Yingjie Xia
- Medical School of Nantong University, Nantong, Jiangsu 226001, China
| | - Huimin Xie
- The Affiliated Nantong Stomatological Hospital of Nantong University, Nantong 226007, China
| | - Yide Zhang
- Department of Geriatrics, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu, China
| | - Qianru He
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu 226001, China
| | - Leilei Gong
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu 226001, China
| | - Yun Gu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu 226001, China
| | - Hualin Sun
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu 226001, China
| | - Qi Zhang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu 226001, China
| | - Jian Zhao
- Department of Orthopedic Oncology, Second Affiliated Hospital of Naval Medical University, Shanghai 200003, China.
| | - Fei Ding
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu 226001, China.
| | - Xiaosong Gu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu 226001, China.
| | - Songlin Zhou
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu 226001, China.
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2
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García-Cerro S, Gómez-Garrido A, Garcia G, Crespo-Facorro B, Brites D. Exploratory Analysis of MicroRNA Alterations in a Neurodevelopmental Mouse Model for Autism Spectrum Disorder and Schizophrenia. Int J Mol Sci 2024; 25:2786. [PMID: 38474035 DOI: 10.3390/ijms25052786] [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: 01/17/2024] [Revised: 02/22/2024] [Accepted: 02/25/2024] [Indexed: 03/14/2024] Open
Abstract
MicroRNAs (miRNAs) play a crucial role in the regulation of gene expression levels and have been implicated in the pathogenesis of autism spectrum disorder (ASD) and schizophrenia (SCZ). In this study, we examined the adult expression profiles of specific miRNAs in the prefrontal cortex (PFC) of a neurodevelopmental mouse model for ASD and SCZ that mimics perinatal pathology, such as NMDA receptor hypofunction, and exhibits behavioral and neurophysiological phenotypes related to these disorders during adulthood. To model the early neuropathogenesis of the disorders, mouse pups were administered subcutaneously with ketamine (30 mg/Kg) at postnatal days 7, 9, and 11. We focused on a set of miRNAs most frequently altered in ASD (miR-451a and miR-486-3p) and in SCZ (miR-132-3p and miR-137-3p) according to human studies. Additionally, we explored miRNAs whose alterations have been identified in both disorders (miR-21-5p, miR-92a-2-5p, miR-144-3p, and miR-146a-5p). We placed particular emphasis on studying the sexual dimorphism in the dynamics of these miRNAs. Our findings revealed significant alterations in the PFC of this ASD- and SCZ-like mouse model. Specifically, we observed upregulated miR-451a and downregulated miR-137-3p. Furthermore, we identified sexual dimorphism in the expression of miR-132-3p, miR-137-3p, and miR-92a-2-5p. From a translational perspective, our results emphasize the potential involvement of miR-92a-2-5p, miR-132-3p, miR-137-3p, and miR-451a in the pathophysiology of ASD and SCZ and strengthen their potential as biomarkers and therapeutic targets of such disorders.
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Affiliation(s)
- Susana García-Cerro
- Translational Psychiatry Group, Ibis-Biomedicine Institute of Sevilla-CSIC, Manuel Siurot AV, 41013 Seville, Spain
- Spanish Network for Research in Mental Health (CIBERSAM), Monforte de Lemos AV, 3-5, 28029 Madrid, Spain
| | - Ana Gómez-Garrido
- Translational Psychiatry Group, Ibis-Biomedicine Institute of Sevilla-CSIC, Manuel Siurot AV, 41013 Seville, Spain
- Spanish Network for Research in Mental Health (CIBERSAM), Monforte de Lemos AV, 3-5, 28029 Madrid, Spain
| | - Gonçalo Garcia
- Neuroinflammation, Signaling and Neuroregeneration Lab, Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisbon, Portugal
- Department of Pharmaceutical Sciences and Medicines, Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisbon, Portugal
| | - Benedicto Crespo-Facorro
- Translational Psychiatry Group, Ibis-Biomedicine Institute of Sevilla-CSIC, Manuel Siurot AV, 41013 Seville, Spain
- Spanish Network for Research in Mental Health (CIBERSAM), Monforte de Lemos AV, 3-5, 28029 Madrid, Spain
- Mental Health Unit, Virgen del Rocio University Hospital, Manuel Siurot AV, 41013 Seville, Spain
- Department of Psychiatry, Faculty of Medicine, University of Seville, Sánchez Pizjuán AV, 41013 Seville, Spain
| | - Dora Brites
- Neuroinflammation, Signaling and Neuroregeneration Lab, Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisbon, Portugal
- Department of Pharmaceutical Sciences and Medicines, Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisbon, Portugal
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Lim YJ, Jung GN, Park WT, Seo MS, Lee GW. Therapeutic potential of small extracellular vesicles derived from mesenchymal stem cells for spinal cord and nerve injury. Front Cell Dev Biol 2023; 11:1151357. [PMID: 37035240 PMCID: PMC10073723 DOI: 10.3389/fcell.2023.1151357] [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: 01/26/2023] [Accepted: 03/10/2023] [Indexed: 04/11/2023] Open
Abstract
Neural diseases such as compressive, congenital, and traumatic injuries have diverse consequences, from benign mild sequelae to severe life-threatening conditions with associated losses of motor, sensory, and autonomic functions. Several approaches have been adopted to control neuroinflammatory cascades. Traditionally, mesenchymal stem cells (MSCs) have been regarded as therapeutic agents, as they possess growth factors and cytokines with potential anti-inflammatory and regenerative effects. However, several animal model studies have reported conflicting outcomes, and therefore, the role of MSCs as a regenerative source for the treatment of neural pathologies remains debatable. In addition, issues such as heterogeneity and ethical issues limited their use as therapeutic agents. To overcome the obstacles associated with the use of traditional agents, we explored the therapeutic potentials of extracellular vesicles (EVs), which contain nucleic acids, functional proteins, and bioactive lipids, and play crucial roles in immune response regulation, inflammation reduction, and cell-to-cell communication. EVs may surpass MSCs in size issue, immunogenicity, and response to the host environment. However, a comprehensive review is required on the therapeutic potential of EVs for the treatment of neural pathologies. In this review, we discuss the action mechanism of EVs, their potential for treating neural pathologies, and future perspectives regarding their clinical applications.
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Affiliation(s)
- Young-Ju Lim
- Department of Orthopedic Surgery, Yeungnam University College of Medicine, Yeungnam University Medical Center, Daegu, Republic of Korea
| | - Gyeong Na Jung
- Department of Orthopedic Surgery, Yeungnam University College of Medicine, Yeungnam University Medical Center, Daegu, Republic of Korea
| | - Wook-Tae Park
- Department of Orthopedic Surgery, Yeungnam University College of Medicine, Yeungnam University Medical Center, Daegu, Republic of Korea
| | - Min-Soo Seo
- Department of Veterinary Tissue Engineering, College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Gun Woo Lee
- Department of Orthopedic Surgery, Yeungnam University College of Medicine, Yeungnam University Medical Center, Daegu, Republic of Korea
- *Correspondence: Gun Woo Lee,
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4
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Huang Y, Chen X, Zhuang J, Yu K. The Role of Retinal Dysfunction in Myopia Development. Cell Mol Neurobiol 2022:10.1007/s10571-022-01309-1. [DOI: 10.1007/s10571-022-01309-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 11/16/2022] [Indexed: 11/27/2022]
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5
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Zhuang W, Liu H, He Z, Ju J, Gao Q, Shan Z, Lei L. miR-92a-2-5p Regulates the Proliferation and Differentiation of ASD-Derived Neural Progenitor Cells. Curr Issues Mol Biol 2022; 44:2431-2442. [PMID: 35735607 PMCID: PMC9222067 DOI: 10.3390/cimb44060166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/20/2022] [Accepted: 05/22/2022] [Indexed: 11/16/2022] Open
Abstract
Autism spectrum disorder (ASD) is a group of complex neurodevelopmental disorders with abnormal behavior. However, the pathogenesis of ASD remains to be clarified. It has been demonstrated that miRNAs are essential regulators of ASD. However, it is still unclear how miR-92a-2-5p acts on the developing brain and the cell types directly. In this study, we used neural progenitor cells (NPCs) derived from ASD-hiPSCs as well as from neurotypical controls to examine the effects of miR-92a-2-5p on ASD-NPCs proliferation and neuronal differentiation, and whether miR-92a-2-5p could interact with genetic risk factor, DLG3 for ASD. We observed that miR-92a-2-5p upregulated in ASD-NPCs results in decreased proliferation and neuronal differentiation. Inhibition of miR-92a-2-5p could promote proliferation and neuronal differentiation of ASD-NPCs. DLG3 was negatively regulated by miR-92a-2-5p in NPCs. Our results suggest that miR-92a-2-5p is a strong risk factor for ASD and potentially contributes to neuropsychiatric disorders.
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Affiliation(s)
| | | | | | | | | | | | - Lei Lei
- Correspondence: (Z.S.); (L.L.)
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6
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Shen Y, Cheng Z, Chen S, Zhang Y, Chen Q, Yi S. Dysregulated miR-29a-3p/PMP22 Modulates Schwann Cell Proliferation and Migration During Peripheral Nerve Regeneration. Mol Neurobiol 2021; 59:1058-1072. [PMID: 34837628 DOI: 10.1007/s12035-021-02589-2] [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: 07/13/2021] [Accepted: 10/01/2021] [Indexed: 12/20/2022]
Abstract
Schwann cells switch to a repair phenotype following peripheral nerve injury and create a favorable microenvironment to drive nerve repair. Many microRNAs (miRNAs) are differentially expressed in the injured peripheral nerves and play essential roles in regulating Schwann cell behaviors. Here, we examine the temporal expression patterns of miR-29a-3p after peripheral nerve injury and demonstrate significant up-regulation of miR-29a-3p in injured sciatic nerves. Elevated miR-29a-3p inhibits Schwann cell proliferation and migration, while suppressed miR-29a-3p executes reverse effects. In vivo injection of miR-29a-3p agomir to rat sciatic nerves hinders the proliferation and migration of Schwann cells, delays the elongation and myelination of axons, and retards the functional recovery of injured nerves. Mechanistically, miR-29a-3p modulates Schwann cell activities via negatively regulating peripheral myelin protein 22 (PMP22), and PMP22 extensively affects Schwann cell metabolism. Our results disclose the vital role of miR-29a-3p/PMP22 in regulating Schwann cell phenotype following sciatic nerve injury and shed light on the mechanistic basis of peripheral nerve regeneration.
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Affiliation(s)
- Yinying Shen
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, 226001, Jiangsu, China
| | - Zhangchun Cheng
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, 226001, Jiangsu, China
| | - Sailing Chen
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, 226001, Jiangsu, China
| | - Yunsong Zhang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, 226001, Jiangsu, China
| | - Qi Chen
- School of Life Sciences, Nantong University, Nantong, 226001, Jiangsu, China.
| | - Sheng Yi
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, 226001, Jiangsu, China.
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7
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miR-9-5p is involved in the rescue of stress-dependent dendritic shortening of hippocampal pyramidal neurons induced by acute antidepressant treatment with ketamine. Neurobiol Stress 2021; 15:100381. [PMID: 34458512 PMCID: PMC8379501 DOI: 10.1016/j.ynstr.2021.100381] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 08/03/2021] [Accepted: 08/07/2021] [Indexed: 12/12/2022] Open
Abstract
Converging clinical and preclinical evidence demonstrates that depressive phenotypes are associated with synaptic dysfunction and dendritic simplification in cortico-limbic glutamatergic areas. On the other hand, the rapid antidepressant effect of acute ketamine is consistently reported to occur together with the rescue of dendritic atrophy and reduction of spine number induced by chronic stress in the hippocampus and prefrontal cortex of animal models of depression. Nevertheless, the molecular mechanisms underlying these morphological alterations remain largely unknown. Here, we found that miR-9-5p levels were selectively reduced in the hippocampus of rats vulnerable to Chronic Mild Stress (CMS), while acute subanesthetic ketamine restored its levels to basal condition in just 24h; miR-9-5p expression inversely correlated with the anhedonic phenotype. A decrease of miR-9-5p was reproduced in an in vitro model of stress, based on primary hippocampal neurons incubated with the stress hormone corticosterone. In both CMS animals and primary neurons, decreased miR-9-5p levels were associated with dendritic simplification, while treatment with ketamine completely rescued the changes. In vitro modulation of miR-9-5p expression showed a direct role of miR-9-5p in regulating dendritic length and spine density in mature primary hippocampal neurons. Among the putative target genes tested, Rest and Sirt1 were validated as biological targets in primary neuronal cultures. Moreover, in line with miR-9-5p changes, REST protein expression levels were remarkably increased in both CMS vulnerable animals and corticosterone-treated neurons, while ketamine completely abolished this alteration. Finally, the shortening of dendritic length in corticosterone-treated neurons was shown to be partly rescued by miR-9-5p overexpression and dependent on REST protein expression. Overall, our data unveiled the functional role of miR-9-5p in the remodeling of dendritic arbor induced by stress/corticosterone in vulnerable animals and its rescue by acute antidepressant treatment with ketamine.
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Zhang H, Cai X, Xiang C, Han Y, Niu Q. miR-29a and the PTEN-GSK3β axis are involved in aluminum-induced damage to primary hippocampal neuronal networks. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 224:112701. [PMID: 34461321 DOI: 10.1016/j.ecoenv.2021.112701] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 08/17/2021] [Accepted: 08/23/2021] [Indexed: 06/13/2023]
Abstract
We previously reported that aluminum (Al) can cause a range of neurotoxic injuries including progressive irreversible synaptic structural damage and synaptic dysfunction, and eventually neuronal deaths. Mechanism of Al-induced electrophysiological and neuronal connectivity changes in neurons may indicate damage to the neuronal network. Here, mouse primary hippocampal neurons were cultured on micro-electrode array (MEA)- and high-content analysis (HCA)-related plates, showing that Al exposure significantly inhibited hippocampal neuronal electrical spike activity and neurite outgrowth characterized by a reduction in neurite branching and a decrease in the average total neurite length in relation to both Al dose and time of incubation. In recent years, miR-29a/ phosphatase and tensin homolog (PTEN) have been found to play pivotal roles in the morphogenesis of neurons, it has been confirmed in vitro and in vivo that the PTEN-Glycogen synthase kinase-3β (GSK-3β) axis regulates neurite outgrowth. The present study demonstrated that increases in Al exposure and dose gradually reduce miR-29a expression. Up-regulation of miR-29a in the hippocampal neurons by lentivirus transfection reversed the decrease in electrical spike activity and the reduction in both neurite branching and length induced by Al. Moreover, miR-29a suppressed the expression of PTEN and increased the level of phosphorylated Protein Kinase B (p-AKT) and p-GSK-3β which were inhibited by the Al treatment. This suggests that miR-29a is critically involved in the functional and structural neuronal damage induced by Al and is a potential target for Al neurotoxicity. Moreover, the reduction of neurite length and branching induced by Al exposure was regulated by miR-29a and its target neuronal PTEN-GSK3β signaling pathway, which also represents a possible mechanism of Al-induced the inhibition of the electrical activity. Collectively, Al-induced damage to the neuronal network occurred through miR-29a-mediated alterations of the PTEN-GSK3β signaling pathway.
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Affiliation(s)
- Huifang Zhang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, China; Key Lab of Environmental Hazard and Health of Shanxi Province, Shanxi Medical University, China.
| | - Xiaoya Cai
- Department of Occupational Health, School of Public Health, Shanxi Medical University, China; Key Lab of Environmental Hazard and Health of Shanxi Province, Shanxi Medical University, China
| | - Changxin Xiang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, China; Key Lab of Environmental Hazard and Health of Shanxi Province, Shanxi Medical University, China
| | - Yingchao Han
- Department of Occupational Health, School of Public Health, Shanxi Medical University, China; Key Lab of Environmental Hazard and Health of Shanxi Province, Shanxi Medical University, China
| | - Qiao Niu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, China; Key Lab of Environmental Hazard and Health of Shanxi Province, Shanxi Medical University, China.
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9
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Calderón L, Schindler K, Malin SG, Schebesta A, Sun Q, Schwickert T, Alberti C, Fischer M, Jaritz M, Tagoh H, Ebert A, Minnich M, Liston A, Cochella L, Busslinger M. Pax5 regulates B cell immunity by promoting PI3K signaling via PTEN down-regulation. Sci Immunol 2021; 6:6/61/eabg5003. [PMID: 34301800 DOI: 10.1126/sciimmunol.abg5003] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Accepted: 06/22/2021] [Indexed: 12/26/2022]
Abstract
The transcription factor Pax5 controls B cell development, but its role in mature B cells is largely enigmatic. Here, we demonstrated that the loss of Pax5 by conditional mutagenesis in peripheral B lymphocytes led to the strong reduction of B-1a, marginal zone (MZ), and germinal center (GC) B cells as well as plasma cells. Follicular (FO) B cells tolerated the loss of Pax5 but had a shortened half-life. The Pax5-deficient FO B cells failed to proliferate upon B cell receptor or Toll-like receptor stimulation due to impaired PI3K-AKT signaling, which was caused by increased expression of PTEN, a negative regulator of the PI3K pathway. Pax5 restrained PTEN protein expression at the posttranscriptional level, likely involving Pten-targeting microRNAs. Additional PTEN loss in Pten,Pax5 double-mutant mice rescued FO B cell numbers and the development of MZ B cells but did not restore GC B cell formation. Hence, the posttranscriptional down-regulation of PTEN expression is an important function of Pax5 that facilitates the differentiation and survival of mature B cells, thereby promoting humoral immunity.
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Affiliation(s)
- Lesly Calderón
- Research Institute of Molecular Pathology (IMP), Vienna Biocenter (VBC), Campus-Vienna-Biocenter 1, A-1030 Vienna, Austria
| | - Karina Schindler
- Research Institute of Molecular Pathology (IMP), Vienna Biocenter (VBC), Campus-Vienna-Biocenter 1, A-1030 Vienna, Austria
| | - Stephen G Malin
- Research Institute of Molecular Pathology (IMP), Vienna Biocenter (VBC), Campus-Vienna-Biocenter 1, A-1030 Vienna, Austria.,Laboratory of Immunobiology, Department of Medicine Solna, Karolinska Institute, Stockholm, Sweden
| | - Alexandra Schebesta
- Research Institute of Molecular Pathology (IMP), Vienna Biocenter (VBC), Campus-Vienna-Biocenter 1, A-1030 Vienna, Austria
| | - Qiong Sun
- Research Institute of Molecular Pathology (IMP), Vienna Biocenter (VBC), Campus-Vienna-Biocenter 1, A-1030 Vienna, Austria
| | - Tanja Schwickert
- Research Institute of Molecular Pathology (IMP), Vienna Biocenter (VBC), Campus-Vienna-Biocenter 1, A-1030 Vienna, Austria
| | - Chiara Alberti
- Research Institute of Molecular Pathology (IMP), Vienna Biocenter (VBC), Campus-Vienna-Biocenter 1, A-1030 Vienna, Austria
| | - Maria Fischer
- Research Institute of Molecular Pathology (IMP), Vienna Biocenter (VBC), Campus-Vienna-Biocenter 1, A-1030 Vienna, Austria
| | - Markus Jaritz
- Research Institute of Molecular Pathology (IMP), Vienna Biocenter (VBC), Campus-Vienna-Biocenter 1, A-1030 Vienna, Austria
| | - Hiromi Tagoh
- Research Institute of Molecular Pathology (IMP), Vienna Biocenter (VBC), Campus-Vienna-Biocenter 1, A-1030 Vienna, Austria
| | - Anja Ebert
- Research Institute of Molecular Pathology (IMP), Vienna Biocenter (VBC), Campus-Vienna-Biocenter 1, A-1030 Vienna, Austria
| | - Martina Minnich
- Research Institute of Molecular Pathology (IMP), Vienna Biocenter (VBC), Campus-Vienna-Biocenter 1, A-1030 Vienna, Austria
| | - Adrian Liston
- Laboratory of Lymphocyte Signalling and Development, The Babraham Institute, Cambridge CB22 3AT, UK
| | - Luisa Cochella
- Research Institute of Molecular Pathology (IMP), Vienna Biocenter (VBC), Campus-Vienna-Biocenter 1, A-1030 Vienna, Austria
| | - Meinrad Busslinger
- Research Institute of Molecular Pathology (IMP), Vienna Biocenter (VBC), Campus-Vienna-Biocenter 1, A-1030 Vienna, Austria.
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Wang R, Yao J, Gong F, Chen S, He Y, Hu C, Li C. miR-29c-3p regulates TET2 expression and inhibits autophagy process in Parkinson's disease models. Genes Cells 2021; 26:684-697. [PMID: 34086379 DOI: 10.1111/gtc.12877] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 05/31/2021] [Accepted: 06/01/2021] [Indexed: 12/15/2022]
Abstract
Autophagy in dopamine (DA) neurons is concerned to be associated with Parkinson's disease (PD), but the detailed mechanism remains unknown. Herein, we aimed to investigate the function of microRNA (miR)-29c-3p in autophagy in PD models. Intraperitoneal injection of MPTP (20 mg/kg) was given to C57BL/6 mice to establish PD mouse model. SH-SY5Y cells were treated with MPP+ (1 mmol/L) to establish in vitro PD model. The results indicated that in the substantia nigra pars compacta (SNpc) DA neurons of PD mice, autophagy was activated accompanied by down-regulated miR-29c-3p and up-regulated ten-eleven translocation 2 (TET2) expression. Up-regulation of miR-29c-3p inhibited TET2 expression and SNpc (including DA neurons) autophagy in PD mice. In vitro PD model confirmed that MPP+ treatment markedly down-regulated miR-29c-3p expression and up-regulated TET2 expression in SH-SY5Y cells in a dose/time-dependent manner. Moreover, miR-29c-3p up-regulation also inhibited autophagy and TET2 expression in vitro. Additionally, TET2 was proved to be targeted and down-regulated by miR-29c-3p. TET2 knockdown inhibited MPP+ -induced autophagy, whereas TET2 over-expression reversed the effects of miR-29c-3p over-expression on SH-SY5Y cell autophagy. Overall, miR-29c-3p over-expression inhibits autophagy in PD models, which may be mediated by TET2. Our finding may provide new insights for regulating autophagy to improve PD progression.
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Affiliation(s)
- Ruili Wang
- Department of Geriatric Neurology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Jie Yao
- Department of Geriatric Neurology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Fuhua Gong
- Department of Geriatric Neurology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Songsheng Chen
- Department of Geriatric Neurology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Ya He
- Department of Geriatric Neurology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Chunting Hu
- Department of Geriatric Neurology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Chen Li
- Department of Geriatric Neurology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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11
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Zou HJ, Guo SW, Zhu L, Xu X, Liu JB. Methylprednisolone Induces Neuro-Protective Effects via the Inhibition of A1 Astrocyte Activation in Traumatic Spinal Cord Injury Mouse Models. Front Neurosci 2021; 15:628917. [PMID: 34135725 PMCID: PMC8200570 DOI: 10.3389/fnins.2021.628917] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 03/24/2021] [Indexed: 11/13/2022] Open
Abstract
Traumatic spinal cord injury (TSCI) leads to pathological changes such as inflammation, edema, and neuronal apoptosis. Methylprednisolone (MP) is a glucocorticoid that has a variety of beneficial effects, including decreasing inflammation and ischemic reaction, as well as inhibiting lipid peroxidation. However, the efficacy and mechanism of MP in TSCI therapy is yet to be deciphered. In the present study, MP significantly attenuated the apoptotic effects of H2O2 in neuronal cells. Western blot analysis demonstrated that the levels of apoptotic related proteins, Bax and cleaved caspase-3, were reduced while levels of anti-apoptotic Bcl-2 were increased. In vivo TUNEL assays further demonstrated that MP effectively protected neuronal cells from apoptosis after TSCI, and was consistent with in vitro studies. Furthermore, we demonstrated that MP could decrease expression levels of IBA1, Il-1α, TNFα, and C3 and suppress A1 neurotoxic reactive astrocyte activation in TSCI mouse models. Neurological function was evaluated using the Basso Mouse Scale (BMS) and Footprint Test. Results demonstrated that the neurological function of MP-treated injured mice was significantly increased. In conclusion, our study demonstrated that MP could attenuate astrocyte cell death, decrease microglia activation, suppress A1 astrocytes activation, and promote functional recovery after acute TSCI in mouse models.
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Affiliation(s)
- Hong-Jun Zou
- Department of Spinal Surgery, The Third Affiliated Hospital of Soochow University (The First People's Hospital of Changzhou), Changzhou, China
| | - Shi-Wu Guo
- Department of Spinal Surgery, The Third Affiliated Hospital of Soochow University (The First People's Hospital of Changzhou), Changzhou, China
| | - Lin Zhu
- Department of Cardiology, The Third Affiliated Hospital of Soochow University (The First People's Hospital of Changzhou), Changzhou, China
| | - Xu Xu
- Department of Spinal Surgery, The Third Affiliated Hospital of Soochow University (The First People's Hospital of Changzhou), Changzhou, China
| | - Jin-Bo Liu
- Department of Spinal Surgery, The Third Affiliated Hospital of Soochow University (The First People's Hospital of Changzhou), Changzhou, China
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12
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Abstract
Cerebral ischemia-reperfusion (I/R) is a kind of neurovascular disease that causes serious cerebral damage. MicroRNAs (miRNAs) have been widely reported to participate in multiple diseases, including cerebral I/R injury. However, the exact mechanisms of miR-7-5p in cerebral I/R injury was not fully elucidated. In this study, we explored the biological role and regulatory mechanism of miR-7-5p in cerebral I/R injury. We established an in vivo model of cerebral I/R by middle cerebral artery occlusion and an in vitro cellular model of cerebral I/R injury through treating neurons (SH-SY5Y cells) with oxygen-glucose deprivation (OGD). In addition, miR-7-5p expression was confirmed to be upregulated in the cerebral I/R rat model and OGD/R-treated SH-SY5Y cells. Moreover, miR-7-5p inhibition overtly suppressed cerebral injury, cerebral inflammation, and SH-SY5Y cells apoptosis. Sirtuin 1 (sirt1) is previously reported to alleviate I/R, and in this study, it was identified to be a target of miR-7-5p based on luciferase reporter assay. Reverse transcription-quantitative polymerase chain reaction revealed sirt1 expression was downregulated in the cerebral I/R rat model and OGD/R-treated SH-SY5Y cells. Besides, miR-7-5p negatively regulated sirt1. Finally, rescue assays delineated sirt1 overexpression recovered the miR-7-5p upregulation-induced promotion on cerebral I/R injury. In conclusion, miR-7-5p enhanced cerebral I/R injury by degrading sirt1, providing a new paradigm to investigate cerebral I/R injury.
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13
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Liu E, Sun H, Wu J, Kuang Y. MiR-92b-3p regulates oxygen and glucose deprivation-reperfusion-mediated apoptosis and inflammation by targeting TRAF3 in PC12 cells. Exp Physiol 2020; 105:1792-1801. [PMID: 32818322 DOI: 10.1113/ep088708] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 08/18/2020] [Indexed: 12/16/2022]
Abstract
NEW FINDINGS What is the central question of this study? MiR-92b-3p was found to be reduced in a rat model of middle cerebral artery occlusion: what are the functions of miR-92b-3p in oxygen and glucose deprivation-reperfusion (OGD/R)? What is the main finding and its importance? MiR-92b-3p abated apoptosis, mitochondrial dysfunction and inflammation caused by OGD/R via targeting TRAF3, suggesting that miR-92b-3p may serve as a potential therapeutic target in ischaemic stroke treatment. ABSTRACT Stroke is the most common cause of human neurological disability. MiR-92b-3p has been shown to be decreased in a rat model of middle cerebral artery occlusion, but its effects in cerebral ischaemic insult are unknown. In this study, PC12 cells were exposed to oxygen and glucose deprivation-reperfusion (OGD/R) to establish cerebral ischaemic injury in vitro. Quantitative real time-PCR analysis demonstrated that OGD/R exposure led to down-regulation of miR-92b-3p and increased mRNA and protein levels of tumour necrosis factor receptor-associated factor 3 (TRAF3). Gain of miR-92b-3p expression facilitated cell survival; attenuated lactate dehydrogenase leakage, cell apoptosis, caspase 3 activity and cleaved-caspase 3 (c-caspase 3) expression; and decreased the Bax/Bcl-2 ratio. Furthermore, miR-92b-3p repressed mitochondrial membrane potential depolarization, reactive oxygen species production, cytochrome c protein expression, inflammatory cytokine production and the reduction of ATP content. MiR-92b-3p directly targeted the 3'-untranslated region of TRAF3 and decreased TRAF3 expression. Reinforced expression of TRAF3 partly abrogated the biological activity of miR-92b-3p during OGD/R. Hence, miR-92b-3p abated apoptosis, mitochondrial dysfunction and inflammatory responses induced by OGD/R by targeting TRAF3.
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Affiliation(s)
- Enyu Liu
- Department of Neurosurgery, General Hospital of Western Theater Command, Chengdu, China
| | - Haodong Sun
- Department of Neurosurgery, General Hospital of Western Theater Command, Chengdu, China
| | - Jianping Wu
- Department of Neurosurgery, General Hospital of Western Theater Command, Chengdu, China
| | - Yongqin Kuang
- Department of Neurosurgery, General Hospital of Western Theater Command, Chengdu, China
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14
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Ban Y, Cui C. Silencing of Long Non-Coding RNA (lncRNA) Nuclear Paraspeckle Assembly Transcript 1 (NEAT1) Protects PC-12 Cells from LPS-Induced Injury via Targeting miR-29a. Med Sci Monit 2020; 26:e923914. [PMID: 32776916 PMCID: PMC7439599 DOI: 10.12659/msm.923914] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Background Spinal cord injury (SCI) is a debilitating neuropathological condition that significantly affects the quality of life. The present study is basic research examining the underlying mechanisms of NEAT1 and miR-29a in regulating LPS-induced PC-12 cell injury. Material/Methods The model of cell injury was induced by the treatment of PC-12 cells with LPS. The expressions of NEAT1, miR-29a, and inflammatory cytokines were measured by real-time quantitative polymerase chain reactions (RT-qPCR). Cell proliferation and apoptosis were evaluated by CCK-8 and flow cytometry, respectively. Finally, the target between miR-29a and NEAT1 as well as miR-29a and BCL2L11 was investigated by luciferase and RNA pull-down assays. Results Knockdown of NEAT1 can inhibit inflammatory cytokine expression and PC-12 cell apoptosis and promote PC-12 cell proliferation by targeting miR-29a. However, the variation caused by NEAT1 knockdown can be reversed by the silencing of miR-29a and the overexpression of BCL2L11, which is the direct target gene of miR-29a. Conclusions High NEAT1 levels can increase LPS-induced injury in PC-12 cells through the miR-29a/BCL2L11 pathway. lncRNA NEAT1 may, therefore, be a promising target for SCI treatment.
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Affiliation(s)
- Yunchao Ban
- Department of Neurosurgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China (mainland)
| | - Cui Cui
- Department of Orthopedics, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China (mainland)
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15
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Ma R, Wang M, Gao S, Zhu L, Yu L, Hu D, Zhu L, Huang W, Zhang W, Deng J, Pan J, He H, Gao Z, Xu J, Han X. miR-29a Promotes the Neurite Outgrowth of Rat Neural Stem Cells by Targeting Extracellular Matrix to Repair Brain Injury. Stem Cells Dev 2020; 29:599-614. [PMID: 31885334 DOI: 10.1089/scd.2019.0174] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Neural stem cells (NSCs) can generate new neurons to repair brain injury and central nervous system disease by promoting neural regeneration. MicroRNAs (miRNAs) involve in neural development, brain damage, and neurological diseases repair. Recent reports show that several miRNAs express in NSCs and are important to neurogenesis. Neurites play a key role in NSC-related neurogenesis. However, the mechanism of NSC neurite generation is rarely studied. We surprisingly noticed that the neurites increased after bone morphogenetic protein (BMP) treatment in rat NSCs. This process was accompanied by the dynamic change of miRNA-29. Then we discovered that miR-29a regulated neural neurites in rat hippocampus NSCs. Overexpression of miR-29a reduced the cell soma area and promoted the neurite outgrowth of NSCs. Cell soma area became small, whereas the number of neurite increased. Moreover, neurite complexity increased dramatically, with more primary and secondary branches after miR-29a overexpression. In addition, miR-29a overexpression still maintained the stemness of NSCs. Besides, we identified that miR-29a can promote the neurite outgrowth by targeting extracellular matrix-related genes like Fibrillin 1 (Fbn1), Follistatin-like 1 (Fstl1), and laminin subunit gamma 2 (Lamc2). These findings may provide a novel role of miR-29a to regulate neurite outgrowth and development of NSCs. We also offered a possible theoretical basis to the migration mechanism of NSCs in brain development and damage repair.
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Affiliation(s)
- Rongjie Ma
- Department of Gynecology and Obstetrics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Min Wang
- School of Medicine, Jiaxing University, Jiaxing, China.,Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
| | - Shane Gao
- East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Liang Zhu
- East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Liming Yu
- Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
| | - Daiyu Hu
- Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.,Lifeng Institute of Regenerative Medicine, Tongji University, Shanghai, China
| | - Luying Zhu
- Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
| | - Wei Huang
- Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
| | - Weihua Zhang
- Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
| | - Jiajia Deng
- Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
| | - Jie Pan
- Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
| | - Hua He
- Department of Neurosurgery, Third Affiliated Hospital of Second Military Medical University, Shanghai, China
| | - Zhengliang Gao
- Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.,Lifeng Institute of Regenerative Medicine, Tongji University, Shanghai, China
| | - Jun Xu
- East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xinxin Han
- Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
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16
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Secondo A, Petrozziello T, Tedeschi V, Boscia F, Pannaccione A, Molinaro P, Annunziato L. Nuclear localization of NCX: Role in Ca 2+ handling and pathophysiological implications. Cell Calcium 2019; 86:102143. [PMID: 31865040 DOI: 10.1016/j.ceca.2019.102143] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/10/2019] [Accepted: 12/10/2019] [Indexed: 02/05/2023]
Abstract
Numerous lines of evidence indicate that nuclear calcium concentration ([Ca2+]n) may be controlled independently from cytosolic events by a local machinery. In particular, the perinuclear space between the inner nuclear membrane (INM) and the outer nuclear membrane (ONM) of the nuclear envelope (NE) likely serves as an intracellular store for Ca2+ ions. Since ONM is contiguous with the endoplasmic reticulum (ER), the perinuclear space is adjacent to the lumen of ER thus allowing a direct exchange of ions and factors between the two organelles. Moreover, INM and ONM are fused at the nuclear pore complex (NPC), which provides the only direct passageway between the nucleoplasm and cytoplasm. However, due to the presence of ion channels, exchangers and transporters, it has been generally accepted that nuclear ion fluxes may occur across ONM and INM. Within the INM, the Na+/Ca2+ exchanger (NCX) isoform 1 seems to play an important role in handling Ca2+ through the different nuclear compartments. Particularly, nuclear NCX preferentially allows local Ca2+ flowing from nucleoplasm into NE lumen thanks to the Na+ gradient created by the juxtaposed Na+/K+-ATPase. Such transfer reduces abnormal elevation of [Ca2+]n within the nucleoplasm thus modulating specific transductional pathways and providing a protective mechanism against cell death. Despite very few studies on this issue, here we discuss those making major contribution to the field, also addressing the pathophysiological implication of nuclear NCX malfunction.
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Affiliation(s)
- Agnese Secondo
- Division of Pharmacology, Department of Neuroscience, Reproductive and Odontostomatological Sciences, School of Medicine, "Federico II" University of Naples, Naples, Italy.
| | - Tiziana Petrozziello
- Division of Pharmacology, Department of Neuroscience, Reproductive and Odontostomatological Sciences, School of Medicine, "Federico II" University of Naples, Naples, Italy
| | - Valentina Tedeschi
- Division of Pharmacology, Department of Neuroscience, Reproductive and Odontostomatological Sciences, School of Medicine, "Federico II" University of Naples, Naples, Italy
| | - Francesca Boscia
- Division of Pharmacology, Department of Neuroscience, Reproductive and Odontostomatological Sciences, School of Medicine, "Federico II" University of Naples, Naples, Italy
| | - Anna Pannaccione
- Division of Pharmacology, Department of Neuroscience, Reproductive and Odontostomatological Sciences, School of Medicine, "Federico II" University of Naples, Naples, Italy
| | - Pasquale Molinaro
- Division of Pharmacology, Department of Neuroscience, Reproductive and Odontostomatological Sciences, School of Medicine, "Federico II" University of Naples, Naples, Italy
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17
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Thivierge C, Tseng HW, Mayya VK, Lussier C, Gravel SP, Duchaine TF. Alternative polyadenylation confers Pten mRNAs stability and resistance to microRNAs. Nucleic Acids Res 2019; 46:10340-10352. [PMID: 30053103 PMCID: PMC6212768 DOI: 10.1093/nar/gky666] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2018] [Accepted: 07/16/2018] [Indexed: 12/20/2022] Open
Abstract
Fine regulation of the phosphatase and tensin homologue (PTEN) phosphatase dosage is critical for homeostasis and tumour suppression. The 3'-untranslated region (3'-UTR) of Pten mRNA was extensively linked to post-transcriptional regulation by microRNAs (miRNAs). In spite of this critical regulatory role, alternative 3'-UTRs of Pten have not been systematically characterized. Here, we reveal an important diversity of Pten mRNA isoforms generated by alternative polyadenylation sites. Several 3'-UTRs are co-expressed and their relative expression is dynamically regulated. In spite of encoding multiple validated miRNA-binding sites, longer isoforms are largely refractory to miRNA-mediated silencing, are more stable and contribute to the bulk of PTEN protein and signalling functions. Taken together, our results warrant a mechanistic re-interpretation of the post-transcriptional mechanisms involving Pten mRNAs and raise concerns on how miRNA-binding sites are being validated.
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Affiliation(s)
- Caroline Thivierge
- Department of Biochemistry and Goodman Cancer Research Centre, McGill University, Montreal, Quebec H3A 1A3 Canada
| | - Hsin-Wei Tseng
- Department of Biochemistry and Goodman Cancer Research Centre, McGill University, Montreal, Quebec H3A 1A3 Canada
| | - Vinay K Mayya
- Department of Biochemistry and Goodman Cancer Research Centre, McGill University, Montreal, Quebec H3A 1A3 Canada
| | - Carine Lussier
- Department of Biochemistry and Goodman Cancer Research Centre, McGill University, Montreal, Quebec H3A 1A3 Canada
| | | | - Thomas F Duchaine
- Department of Biochemistry and Goodman Cancer Research Centre, McGill University, Montreal, Quebec H3A 1A3 Canada
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18
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Chen Z, Li Z, Jiang C, Jiang X, Zhang J. MiR‐92b‐3p promotes neurite growth and functional recovery via the PTEN/AKT pathway in acute spinal cord injury. J Cell Physiol 2019; 234:23043-23052. [PMID: 31120592 DOI: 10.1002/jcp.28864] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 04/06/2019] [Accepted: 04/11/2019] [Indexed: 12/27/2022]
Affiliation(s)
- Zixian Chen
- Department of Orthopaedics Zhongshan Hospital of Fudan University Shanghai China
| | - Zheng Li
- Department of Orthopaedics Zhongshan Hospital of Fudan University Shanghai China
| | - Chang Jiang
- Department of Orthopaedics Zhongshan Hospital of Fudan University Shanghai China
| | - Xiaoxing Jiang
- Department of Orthopaedics Zhongshan Hospital of Fudan University Shanghai China
| | - Jian Zhang
- Department of Orthopaedics Zhongshan Hospital of Fudan University Shanghai China
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19
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Orang AV, Petersen J, McKinnon RA, Michael MZ. Micromanaging aerobic respiration and glycolysis in cancer cells. Mol Metab 2019; 23:98-126. [PMID: 30837197 PMCID: PMC6479761 DOI: 10.1016/j.molmet.2019.01.014] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 01/22/2019] [Accepted: 01/30/2019] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Cancer cells possess a common metabolic phenotype, rewiring their metabolic pathways from mitochondrial oxidative phosphorylation to aerobic glycolysis and anabolic circuits, to support the energetic and biosynthetic requirements of continuous proliferation and migration. While, over the past decade, molecular and cellular studies have clearly highlighted the association of oncogenes and tumor suppressors with cancer-associated glycolysis, more recent attention has focused on the role of microRNAs (miRNAs) in mediating this metabolic shift. Accumulating studies have connected aberrant expression of miRNAs with direct and indirect regulation of aerobic glycolysis and associated pathways. SCOPE OF REVIEW This review discusses the underlying mechanisms of metabolic reprogramming in cancer cells and provides arguments that the earlier paradigm of cancer glycolysis needs to be updated to a broader concept, which involves interconnecting biological pathways that include miRNA-mediated regulation of metabolism. For these reasons and in light of recent knowledge, we illustrate the relationships between metabolic pathways in cancer cells. We further summarize our current understanding of the interplay between miRNAs and these metabolic pathways. This review aims to highlight important metabolism-associated molecular components in the hunt for selective preventive and therapeutic treatments. MAJOR CONCLUSIONS Metabolism in cancer cells is influenced by driver mutations but is also regulated by posttranscriptional gene silencing. Understanding the nuanced regulation of gene expression in these cells and distinguishing rapid cellular responses from chronic adaptive mechanisms provides a basis for rational drug design and novel therapeutic strategies.
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Affiliation(s)
- Ayla V Orang
- Flinders Centre for Innovation in Cancer, Flinders University, Flinders Medical Centre, Adelaide, South Australia 5042, Australia.
| | - Janni Petersen
- Flinders Centre for Innovation in Cancer, Flinders University, Flinders Medical Centre, Adelaide, South Australia 5042, Australia.
| | - Ross A McKinnon
- Flinders Centre for Innovation in Cancer, Flinders University, Flinders Medical Centre, Adelaide, South Australia 5042, Australia.
| | - Michael Z Michael
- Flinders Centre for Innovation in Cancer, Flinders University, Flinders Medical Centre, Adelaide, South Australia 5042, Australia.
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20
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The microRNAs Expression Profile in Sciatic Nerves of Diabetic Neuropathy Rats After Taurine Treatment by Sequencing. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1155:935-947. [DOI: 10.1007/978-981-13-8023-5_78] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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21
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Yin H, Shen L, Xu C, Liu J. Lentivirus-Mediated Overexpression of miR-29a Promotes Axonal Regeneration and Functional Recovery in Experimental Spinal Cord Injury via PI3K/Akt/mTOR Pathway. Neurochem Res 2018; 43:2038-2046. [PMID: 30173324 DOI: 10.1007/s11064-018-2625-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 07/24/2018] [Accepted: 08/28/2018] [Indexed: 12/11/2022]
Abstract
MicroRNAs as a novel class of endogenous small non-coding RNAs, modulate negative gene expression at the post-transcriptional level. Our previous work has demonstrated that miR-29a reduces PTEN expression by directly targeting the 3'-UTRs (untranslated regions) of its mRNA, thus promoting neurite outgrowth. To further confirm the role of miR-29a in the recovery of SCI and its potential mechanisms, a recombinant lentiviral vector was used to promote miR-29a expression in the injured spinal cord. As compared with the LV-eGFP group and normal saline group, a significantly increased level of miR-29a expression and a markedly decreased level of PTEN expression were observed in the LV-miR-29a group. Overexpression of miR-29a increased the phosphorylation of two proteins (Akt and S6) of PI3K-AKT-mTOR signaling pathway and the expression of axonal regeneration associated key marker protein (neurofiament-200). Moreover, quantitative imaging analysis was performed to confirm that LV-miR-29a group expressed axonal regeneration at 4.0 ± 0.2-fold as much as the other two groups. Besides, miR-29a overexpression promoted hindlimb motor functional recovery. Collectively, these results suggested that miR-29a may be an important regulator for axon regeneration, and a potential therapeutic target for SCI recovery.
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Affiliation(s)
- Hua Yin
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou, 213003, Jiangsu, China.,Department of Orthopedics, The Jintan Affiliated Hospital of Jiangsu University, Jintan, 213200, Jiangsu, China
| | - Liming Shen
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou, 213003, Jiangsu, China
| | - Chao Xu
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou, 213003, Jiangsu, China
| | - Jinbo Liu
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou, 213003, Jiangsu, China.
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22
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Zhang J, Liu Y, Lu L. Emerging role of MicroRNAs in peripheral nerve system. Life Sci 2018; 207:227-233. [PMID: 29894714 DOI: 10.1016/j.lfs.2018.06.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 05/21/2018] [Accepted: 06/08/2018] [Indexed: 01/17/2023]
Abstract
Peripheral nerve injury is one of the most common clinical diseases. Although the regeneration of the peripheral nerve is better than that of the nerves of the central nervous system, because of its growth rate restrictions after damage. Hence, the outcome of repair after injury is not favorable. Small RNA, a type of non-coding RNA, has recently been gaining attention in neural injury. It is widely distributed in the nervous system in vivo and a significant change in the expression of small RNAs has been observed in a neural injury model. This suggests that MicroRNAs (miRNAs) may serve as a potential target for resolving the challenges of peripheral nerve repair. This review summarizes the current challenges in peripheral nerve injury repair, systematically expounds the mechanism of miRNAs in the process of nerve injury and repair and attempts to determine the possible treatment of peripheral nerve injury.
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Affiliation(s)
- Jiayi Zhang
- Department of Hand and Foot Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Yang Liu
- Department of Hand and Foot Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Laijin Lu
- Department of Hand and Foot Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, China.
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23
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Shi Z, Zhou H, Lu L, Pan B, Wei Z, Liu J, Li J, Yuan S, Kang Y, Liu L, Yao X, Kong X, Feng S. MicroRNA‐29a regulates neural stem cell neuronal differentiation by targeting PTEN. J Cell Biochem 2018; 119:5813-5820. [DOI: 10.1002/jcb.26768] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2017] [Accepted: 02/02/2018] [Indexed: 01/09/2023]
Affiliation(s)
- Zhongju Shi
- Department of OrthopaedicsTianjin Medical University General HospitalTianjinP. R. China
| | - Hengxing Zhou
- Department of OrthopaedicsTianjin Medical University General HospitalTianjinP. R. China
| | - Lu Lu
- Department of OrthopaedicsTianjin Medical University General HospitalTianjinP. R. China
| | - Bin Pan
- Department of OrthopaedicsThe Affiliated Hospital of XuzhouMedical UniversityXuzhouJiangsuP. R. China
| | - Zhijian Wei
- Department of OrthopaedicsTianjin Medical University General HospitalTianjinP. R. China
| | - Jun Liu
- Department of OrthopaedicsTianjin Medical University General HospitalTianjinP. R. China
| | - Jiahe Li
- Department of OrthopaedicsTianjin Medical University General HospitalTianjinP. R. China
| | - Shiyang Yuan
- Department of OrthopaedicsTianjin Medical University General HospitalTianjinP. R. China
| | - Yi Kang
- Department of OrthopaedicsTianjin Medical University General HospitalTianjinP. R. China
| | - Lu Liu
- Department of OrthopaedicsTianjin Medical University General HospitalTianjinP. R. China
| | - Xue Yao
- Department of OrthopaedicsTianjin Medical University General HospitalTianjinP. R. China
| | - Xiaohong Kong
- 221 LaboratorySchool of MedicineNankai UniversityTianjinP. R. China
| | - Shiqing Feng
- Department of OrthopaedicsTianjin Medical University General HospitalTianjinP. R. China
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Na +/Ca 2+ exchanger 1 on nuclear envelope controls PTEN/Akt pathway via nucleoplasmic Ca 2+ regulation during neuronal differentiation. Cell Death Discov 2018. [PMID: 29531809 PMCID: PMC5841316 DOI: 10.1038/s41420-017-0018-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Nuclear envelope (NE) is a Ca2+-storing organelle controlling neuronal differentiation through nuclear Ca2+ concentrations ([Ca2+]n). However, how [Ca2+]n regulates this important function remains unknown. Here, we investigated the role of the nuclear form of the Na+/Ca2+ exchanger 1(nuNCX1) during the different stages of neuronal differentiation and the involvement of PTEN/PI3'K/Akt pathway. In neuronal cells, nuNCX1 was detected on the inner membrane of the NE where protein expression and activity of the exchanger increased during NGF-induced differentiation. nuNCX1 activation by Na+-free perfusion induced a time-dependent activation of nuclear-resident PI3K/Akt pathway in isolated nuclei. To discriminate the contribution of nuNCX1 from those of plasma membrane NCX, we generated a chimeric protein composed of the fluorophore EYFP, the exchanger inhibitory peptide, and the nuclear localization signal, named XIP-NLS. Fura-2 measurements on single nuclei and patch-clamp experiments in whole-cell configuration showed that XIP-NLS selectively inhibited nuNCX1. Once it reached the nuclear compartment, XIP-NLS increased the nucleoplasmic Ca2+ peak elicited by ATP and reduced Akt phosphorylation, GAP-43 and MAP-2 expression through nuclear-resident PTEN induction. Furthermore, in accordance with the prevention of the neuronal phenotype, XIP-NLS significantly reduced TTX-sensitive Na+ currents and membrane potential during neuronal differentiation. The selective inhibition of nuNCX1 by XIP-NLS increased the percentage of β III tubulin-positive immature neurons in mature cultures of MAP-2-positive cortical neurons, thus unraveling a new function for nuNCX1 in regulating neuronal differentiation through [Ca2+]n-dependent PTEN/PI3K/Akt pathway.
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Shen LM, Song ZW, Hua Y, Chao X, Liu JB. miR-181d-5p promotes neurite outgrowth in PC12 Cells via PI3K/Akt pathway. CNS Neurosci Ther 2017; 23:894-906. [PMID: 28961370 DOI: 10.1111/cns.12761] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Revised: 09/04/2017] [Accepted: 09/07/2017] [Indexed: 02/01/2023] Open
Abstract
INTRODUCTION miRNAs dysregulate in spinal cord injury (SCI) and have been demonstrated to play a crucial role in neurite outgrowth. However, the underlying mechanism remains elusive. In this study, we constructed a mouse model of SCI, extracted RNA from injured spinal cord tissue for the use of microarray assay. miR-181d-5p which is one of the most significantly expressed miRNAs in miRNA-mRNA network, abundantly expressed in center system and highly conserved across different spices, was chosen for our further study. AIMS To demonstrate whether miR-181d-5p can promote neurite outgrowth in PC12 cells via PI3K/Akt signaling pathway, we performed function analysis of miR-181d-5p with LV-miR-181d-5p and LV-sh-GFP to infect PC12 cells. RESULTS Through microarray assay analysis, we totally found 262 significantly expressed miRNAs and 2973 target genes in SCI and observed that their expression dynamically changed postinjury. Here, we provided enough evidences that the overexpression of miR181d-5p significantly decreased the expression of PTEN, upregulated p-Akt expression, increased neurite outgrowth-related proteins (GAP-43 and NF-200) and synaptic vesicle-related proteins (Synapsin and PSD95), and then promoted neurite outgrowth in PC12 cells. Furthermore, we confirmed that miR-181d-5p could directly target to the 3'-UTR of PTEN mRNA through dual-luciferase report assay. CONCLUSIONS Our study supports that aberrant expression of miRNAs is involved in the pathogenesis of SCI, miR-181d-5p plays an important role in neurite growth in PC12 cells via PI3K/Akt signaling pathway and may be a candidate target for the treatment of SCI in the future.
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Affiliation(s)
- Li-Ming Shen
- Department of Orthopedics, the Third Affiliated Hospital, Soochow University, Changzhou, Jiangsu, China.,Department of Orthopedic Surgery, Liyang People's Hospital, Liyang City, Jiang Su, China
| | - Zhi-Wen Song
- Department of Orthopedics, the Third Affiliated Hospital, Soochow University, Changzhou, Jiangsu, China
| | - Yin Hua
- Department of Orthopedics, the Third Affiliated Hospital, Soochow University, Changzhou, Jiangsu, China
| | - Xu Chao
- Department of Orthopedics, the Third Affiliated Hospital, Soochow University, Changzhou, Jiangsu, China
| | - Jin-Bo Liu
- Department of Orthopedics, the Third Affiliated Hospital, Soochow University, Changzhou, Jiangsu, China
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Expression of MicroRNA-29a Regulated by Yes-Associated Protein Modulates the Neurite Outgrowth in N2a Cells. BIOMED RESEARCH INTERNATIONAL 2017; 2017:5251236. [PMID: 29138751 PMCID: PMC5613373 DOI: 10.1155/2017/5251236] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 04/27/2017] [Accepted: 05/10/2017] [Indexed: 01/06/2023]
Abstract
Yes-associated protein (YAP) is proved to increase miR-29a in the present study, but the relevant molecular mechanism is not clear. Also, growing evidence indicates that the high-level miR-29a promotes the neurite outgrowth by decreasing PTEN (phosphatase and tensin homologue deleted on chromosome 10). Results show that the expression of miR-29a increases but the PTEN decreases during transfecting the N2a cells with the YAP plasmid. Meanwhile, the advancement of neurite outgrowth is presented via using multiple methods to detect the expression of GAP-43 and NF-200, which have a strong association with neurite outgrowth. The expression of miR-29a, GAP-43, and NF-200 shows an opposite tendency compared to the PTEN when YAP is downregulated. By treating N2a cells with miR-29a mimic and inhibitor, we also find the same conclusion. For in silico analysis of miR-29a, its promoter may have a binding site for YAP. Based on a luciferase reporter assay and a chromatin immunoprecipitation (ChIP) experiment, we demonstrate that YAP could increase the expression of miR-29a by targeting the promoter of miR-29a. In conclusion, the results identify that YAP promotes the neurite outgrowth via targeting the promoter of miR-29a, and it may be an effective therapeutic medicine for the neural disease.
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27
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Ghibaudi M, Boido M, Vercelli A. Functional integration of complex miRNA networks in central and peripheral lesion and axonal regeneration. Prog Neurobiol 2017; 158:69-93. [PMID: 28779869 DOI: 10.1016/j.pneurobio.2017.07.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 07/24/2017] [Accepted: 07/28/2017] [Indexed: 01/06/2023]
Abstract
New players are emerging in the game of peripheral and central nervous system injury since their physiopathological mechanisms remain partially elusive. These mechanisms are characterized by several molecules whose activation and/or modification following a trauma is often controlled at transcriptional level. In this scenario, microRNAs (miRNAs/miRs) have been identified as main actors in coordinating important molecular pathways in nerve or spinal cord injury (SCI). miRNAs are small non-coding RNAs whose functionality at network level is now emerging as a new level of complexity. Indeed they can act as an organized network to provide a precise control of several biological processes. Here we describe the functional synergy of some miRNAs in case of SCI and peripheral damage. In particular we show how several small RNAs can cooperate in influencing simultaneously the molecular pathways orchestrating axon regeneration, inflammation, apoptosis and remyelination. We report about the networks for which miRNA-target bindings have been experimentally demonstrated or inferred based on target prediction data: in both cases, the connection between one miRNA and its downstream pathway is derived from a validated observation or is predicted from the literature. Hence, we discuss the importance of miRNAs in some pathological processes focusing on their functional structure as participating in a cooperative and/or convergence network.
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Affiliation(s)
- M Ghibaudi
- Department of Neuroscience "Rita Levi Montalcini", Neuroscience Institute Cavalieri Ottolenghi, University of Torino, Italian Institute of Neuroscience, Italy.
| | - M Boido
- Department of Neuroscience "Rita Levi Montalcini", Neuroscience Institute Cavalieri Ottolenghi, University of Torino, Italian Institute of Neuroscience, Italy
| | - A Vercelli
- Department of Neuroscience "Rita Levi Montalcini", Neuroscience Institute Cavalieri Ottolenghi, University of Torino, Italian Institute of Neuroscience, Italy
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28
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Wang WM, Lu G, Su XW, Lyu H, Poon WS. MicroRNA-182 Regulates Neurite Outgrowth Involving the PTEN/AKT Pathway. Front Cell Neurosci 2017; 11:96. [PMID: 28442995 PMCID: PMC5385363 DOI: 10.3389/fncel.2017.00096] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 03/20/2017] [Indexed: 01/05/2023] Open
Abstract
MicroRNAs are implicated in neuronal development and maturation. Neuronal maturation, including axon outgrowth and dendrite tree formation, is regulated by complex mechanisms and related to several neurodevelopmental disorders. We demonstrated that one neuron-enriched microRNA, microRNA-182 (miR-182), played a significant role in regulating neuronal axon outgrowth and dendrite tree formation. Overexpression of miR-182 promoted axon outgrowth and complexity of the dendrite tree while also increasing the expression of neurofilament-M and neurofilament-L, which provide structural support for neurite outgrowth. However, a reduction of miR-182 inhibited neurite outgrowth. Furthermore, we showed that miR-182 activated the AKT pathway by increasing AKT phosphorylation on S473 and T308 and inhibiting PTEN activity by increasing phosphorylation on S380. Inhibition of AKT activity with the PI3-K inhibitor LY294002 could downregulate AKT and PTEN phosphorylation and suppress axon outgrowth. In addition, we showed that BCAT2 might be the target of miR-182 that takes part in the regulation of neuronal maturation; blockage of endogenous BCAT2 promotes axon outgrowth and AKT activity. These observations indicate that miR-182 regulates axon outgrowth and dendrite maturation involving activation of the PTEN/AKT pathway.
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Affiliation(s)
- Wu M Wang
- Division of Neurosurgery, Department of Surgery, Prince of Wales HospitalThe Chinese University of Hong Kong, Hong Kong, China
| | - Gang Lu
- Division of Neurosurgery, Department of Surgery, Prince of Wales HospitalThe Chinese University of Hong Kong, Hong Kong, China
| | - Xian W Su
- Division of Neurosurgery, Department of Surgery, Prince of Wales HospitalThe Chinese University of Hong Kong, Hong Kong, China
| | - Hao Lyu
- Division of Neurosurgery, Department of Surgery, Prince of Wales HospitalThe Chinese University of Hong Kong, Hong Kong, China
| | - Wai S Poon
- Division of Neurosurgery, Department of Surgery, Prince of Wales HospitalThe Chinese University of Hong Kong, Hong Kong, China
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29
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Xin H, Katakowski M, Wang F, Qian JY, Liu XS, Ali MM, Buller B, Zhang ZG, Chopp M. MicroRNA cluster miR-17-92 Cluster in Exosomes Enhance Neuroplasticity and Functional Recovery After Stroke in Rats. Stroke 2017; 48:747-753. [PMID: 28232590 PMCID: PMC5330787 DOI: 10.1161/strokeaha.116.015204] [Citation(s) in RCA: 384] [Impact Index Per Article: 54.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 11/08/2016] [Accepted: 11/14/2016] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND PURPOSE Multipotent mesenchymal stromal cell (MSC) harvested exosomes are hypothesized as the major paracrine effectors of MSCs. In vitro, the miR-17-92 cluster promotes oligodendrogenesis, neurogenesis, and axonal outgrowth. We, therefore, investigated whether the miR-17-92 cluster-enriched exosomes harvested from MSCs transfected with an miR-17-92 cluster plasmid enhance neurological recovery compared with control MSC-derived exosomes. METHODS Rats subjected to 2 hours of transient middle cerebral artery occlusion were intravenously administered miR-17-92 cluster-enriched exosomes, control MSC exosomes, or liposomes and were euthanized 28 days post-middle cerebral artery occlusion. Histochemistry, immunohistochemistry, and Golgi-Cox staining were used to assess dendritic, axonal, synaptic, and myelin remodeling. Expression of phosphatase and tensin homolog and activation of its downstream proteins, protein kinase B, mechanistic target of rapamycin, and glycogen synthase kinase 3β in the peri-infarct region were measured by means of Western blots. RESULTS Compared with the liposome treatment, both exosome treatment groups exhibited significant improvement of functional recovery, but miR-17-92 cluster-enriched exosome treatment had significantly more robust effects on improvement of neurological function and enhancements of oligodendrogenesis, neurogenesis, and neurite remodeling/neuronal dendrite plasticity in the ischemic boundary zone (IBZ) than the control MSC exosome treatment. Moreover, miR-17-92 cluster-enriched exosome treatment substantially inhibited phosphatase and tensin homolog, a validated miR-17-92 cluster target gene, and subsequently increased the phosphorylation of phosphatase and tensin homolog downstream proteins, protein kinase B, mechanistic target of rapamycin, and glycogen synthase kinase 3β compared with control MSC exosome treatment. CONCLUSIONS Our data suggest that treatment of stroke with tailored exosomes enriched with the miR-17-92 cluster increases neural plasticity and functional recovery after stroke, possibly via targeting phosphatase and tensin homolog to activate the PI3K/protein kinase B/mechanistic target of rapamycin/glycogen synthase kinase 3β signaling pathway.
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Affiliation(s)
- Hongqi Xin
- From the Department of Neurology, Henry Ford Hospital, Detroit, MI (H.X., M.K., F.W., J.-Y.Q., X.S.L., M.M.A., B.B., Z.G.Z., M.C.); and Department of Physics, Oakland University, Rochester, MI (M.C.)
| | - Mark Katakowski
- From the Department of Neurology, Henry Ford Hospital, Detroit, MI (H.X., M.K., F.W., J.-Y.Q., X.S.L., M.M.A., B.B., Z.G.Z., M.C.); and Department of Physics, Oakland University, Rochester, MI (M.C.)
| | - Fengjie Wang
- From the Department of Neurology, Henry Ford Hospital, Detroit, MI (H.X., M.K., F.W., J.-Y.Q., X.S.L., M.M.A., B.B., Z.G.Z., M.C.); and Department of Physics, Oakland University, Rochester, MI (M.C.)
| | - Jian-Yong Qian
- From the Department of Neurology, Henry Ford Hospital, Detroit, MI (H.X., M.K., F.W., J.-Y.Q., X.S.L., M.M.A., B.B., Z.G.Z., M.C.); and Department of Physics, Oakland University, Rochester, MI (M.C.)
| | - Xian Shuang Liu
- From the Department of Neurology, Henry Ford Hospital, Detroit, MI (H.X., M.K., F.W., J.-Y.Q., X.S.L., M.M.A., B.B., Z.G.Z., M.C.); and Department of Physics, Oakland University, Rochester, MI (M.C.)
| | - Meser M Ali
- From the Department of Neurology, Henry Ford Hospital, Detroit, MI (H.X., M.K., F.W., J.-Y.Q., X.S.L., M.M.A., B.B., Z.G.Z., M.C.); and Department of Physics, Oakland University, Rochester, MI (M.C.)
| | - Benjamin Buller
- From the Department of Neurology, Henry Ford Hospital, Detroit, MI (H.X., M.K., F.W., J.-Y.Q., X.S.L., M.M.A., B.B., Z.G.Z., M.C.); and Department of Physics, Oakland University, Rochester, MI (M.C.)
| | - Zheng Gang Zhang
- From the Department of Neurology, Henry Ford Hospital, Detroit, MI (H.X., M.K., F.W., J.-Y.Q., X.S.L., M.M.A., B.B., Z.G.Z., M.C.); and Department of Physics, Oakland University, Rochester, MI (M.C.)
| | - Michael Chopp
- From the Department of Neurology, Henry Ford Hospital, Detroit, MI (H.X., M.K., F.W., J.-Y.Q., X.S.L., M.M.A., B.B., Z.G.Z., M.C.); and Department of Physics, Oakland University, Rochester, MI (M.C.).
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30
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Wang C, Liao H, Cao Z. Role of Osterix and MicroRNAs in Bone Formation and Tooth Development. Med Sci Monit 2016; 22:2934-42. [PMID: 27543160 PMCID: PMC4994932 DOI: 10.12659/msm.896742] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Osterix (Osx) is an osteoblast-specific transcription factor that is essential for bone formation. MicroRNAs (miRNAs) are ~22-nucleotide-long noncoding RNAs that play important regulatory roles in animals and plants by targeting mRNAs for cleavage or translational repression. They can also control osteoblast-mediated bone formation and osteoclast-related bone remodeling. The vital roles of Osx and miRNAs during bone formation have been well studied, but very few studies have discussed their co-functions and the relationships between them. In this review, we outline the significant functions of Osx and miRNAs on certain cell types during osteogenesis and illustrate their roles during tooth development. More importantly, we discuss the relationship between Osx and miRNAs, which we believe could lead to a new treatment for skeletal and periodontal diseases.
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Affiliation(s)
- Chuan Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST KLOS) and Key Laboratory for Oral Biomedical Engineering of Ministry of Education (KLOBME), School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China (mainland)
| | - Haiqing Liao
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST KLOS) and Key Laboratory for Oral Biomedical Engineering of Ministry of Education (KLOBME), School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China (mainland)
| | - Zhengguo Cao
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST KLOS) and Key Laboratory for Oral Biomedical Engineering of Ministry of Education (KLOBME), School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China (mainland)
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31
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Affiliation(s)
- Mingkun Xie
- a Department of Forensic Genetics , West China School of Preclinical and Forensic Medicine, Sichuan University , Chengdu , Sichuan , China
| | - Yating Li
- a Department of Forensic Genetics , West China School of Preclinical and Forensic Medicine, Sichuan University , Chengdu , Sichuan , China
| | - Jing Wu
- a Department of Forensic Genetics , West China School of Preclinical and Forensic Medicine, Sichuan University , Chengdu , Sichuan , China
| | - Jin Wu
- a Department of Forensic Genetics , West China School of Preclinical and Forensic Medicine, Sichuan University , Chengdu , Sichuan , China
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Ren C, Wang W, Han C, Chen H, Fu D, Luo Y, Yao H, Wang D, Ma L, Zhou L, Han D, Shen M. Expression and prognostic value of miR-92a in patients with gastric cancer. Tumour Biol 2016; 37:9483-91. [PMID: 26790436 DOI: 10.1007/s13277-016-4865-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 01/13/2016] [Indexed: 12/12/2022] Open
Abstract
MicroRNA (miR)-92 expression is often aberrant in human cancers. However, its expression in gastric carcinoma and its relation to clinicopathological features and prognosis are unclear.Tissue microarrays were constructed from 180 patients with gastric cancer (GC), who were undergoing radical resection. MiR-92a expression was detected using miRNA-locked nucleic acid in situ hybridization, and its correlation with clinicopathological features and overall survival was analyzed. MiR-92a expression was decreased in 13.9 % (25/180) of GC, increased in 81.1 % (146/180), and unchanged in 5.0 % (9/180), compared with paracancerous normal tissue (P < 0.001). Univariate analysis showed that high miR-92a expression, tumor stage, tumor status, node status, and tumor size were significant negative prognostic predictors for overall survival in patients with GC (P < 0.001, P < 0.001, P = 0.008, P < 0.001, and P = 0.001, respectively). High miR-92a expression still remained a significant predictor of shorter survival in stage II (n = 56, P = 0.001) and stage III (n = 92, P = 0.009) GC. Multivariate regression analysis demonstrated that tumor status (hazard ratio [HR], 3.10; 95 % confidence interval [CI], 1.51-6.37; P = 0.002), stage (HR, 3.54; 95 % CI, 1.65-7.63; P = 0.000), lymph node metastasis (HR, 2.83; 95 % CI, 1.88-4.28; P = 0.000), high expression of miR-92a (HR, 2.94; 95 % CI, 2.01-4.31; P = 0.000), and tumor size (HR, 2.34; 95 % CI, 1.45-3.79; P = 0.002) predicted shorter OS.High expression of miR-92a compared with adjacent normal tissues was associated with shorter OS. MiR-92a may thus be useful for evaluating prognosis and may provide a novel treatment target in patients with GC.
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Affiliation(s)
- Chuanli Ren
- Clinical Medical Testing Laboratory, Northern Jiangsu People's Hospital and Clinical Medical College of Yangzhou University, No. 98 Western Nantong Road, Yangzhou, 225001, China. .,Department of Epidemiology and Biostatistics, Ministry of Education (MOE) Key Laboratory of Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing, China.
| | - Wenshu Wang
- Department of Physical Chemistry, Yangzhou University, Yangzhou, China
| | - Chongxu Han
- Clinical Medical Testing Laboratory, Northern Jiangsu People's Hospital and Clinical Medical College of Yangzhou University, No. 98 Western Nantong Road, Yangzhou, 225001, China
| | - Hui Chen
- Geriatric Medicine, Northern Jiangsu People's Hospital and Clinical Medical College of Yangzhou University, Yangzhou, China
| | - Deyuan Fu
- Breast Oncology Surgery, Northern Jiangsu People's Hospital and Clinical Medical College of Yangzhou University, Yangzhou, China
| | - Yulin Luo
- Breast Oncology Surgery, Northern Jiangsu People's Hospital and Clinical Medical College of Yangzhou University, Yangzhou, China
| | - Hanyu Yao
- Breast Oncology Surgery, Northern Jiangsu People's Hospital and Clinical Medical College of Yangzhou University, Yangzhou, China
| | - Daxin Wang
- Clinical Medical Testing Laboratory, Northern Jiangsu People's Hospital and Clinical Medical College of Yangzhou University, No. 98 Western Nantong Road, Yangzhou, 225001, China
| | - Li Ma
- Lab of Hematology, Northern Jiangsu People's Hospital and Clinical Medical College of Yangzhou University, Yangzhou, China
| | - Lin Zhou
- Clinical Medical Testing Laboratory, Northern Jiangsu People's Hospital and Clinical Medical College of Yangzhou University, No. 98 Western Nantong Road, Yangzhou, 225001, China
| | - Dongsheng Han
- Clinical Medical Testing Laboratory, Northern Jiangsu People's Hospital and Clinical Medical College of Yangzhou University, No. 98 Western Nantong Road, Yangzhou, 225001, China
| | - Ming Shen
- Department of Physical Chemistry, Yangzhou University, Yangzhou, China
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