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Papadimitriou E, Thomaidou D. Post-transcriptional mechanisms controlling neurogenesis and direct neuronal reprogramming. Neural Regen Res 2024; 19:1929-1939. [PMID: 38227517 DOI: 10.4103/1673-5374.390976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 11/08/2023] [Indexed: 01/17/2024] Open
Abstract
Neurogenesis is a tightly regulated process in time and space both in the developing embryo and in adult neurogenic niches. A drastic change in the transcriptome and proteome of radial glial cells or neural stem cells towards the neuronal state is achieved due to sophisticated mechanisms of epigenetic, transcriptional, and post-transcriptional regulation. Understanding these neurogenic mechanisms is of major importance, not only for shedding light on very complex and crucial developmental processes, but also for the identification of putative reprogramming factors, that harbor hierarchically central regulatory roles in the course of neurogenesis and bare thus the capacity to drive direct reprogramming towards the neuronal fate. The major transcriptional programs that orchestrate the neurogenic process have been the focus of research for many years and key neurogenic transcription factors, as well as repressor complexes, have been identified and employed in direct reprogramming protocols to convert non-neuronal cells, into functional neurons. The post-transcriptional regulation of gene expression during nervous system development has emerged as another important and intricate regulatory layer, strongly contributing to the complexity of the mechanisms controlling neurogenesis and neuronal function. In particular, recent advances are highlighting the importance of specific RNA binding proteins that control major steps of mRNA life cycle during neurogenesis, such as alternative splicing, polyadenylation, stability, and translation. Apart from the RNA binding proteins, microRNAs, a class of small non-coding RNAs that block the translation of their target mRNAs, have also been shown to play crucial roles in all the stages of the neurogenic process, from neural stem/progenitor cell proliferation, neuronal differentiation and migration, to functional maturation. Here, we provide an overview of the most prominent post-transcriptional mechanisms mediated by RNA binding proteins and microRNAs during the neurogenic process, giving particular emphasis on the interplay of specific RNA binding proteins with neurogenic microRNAs. Taking under consideration that the molecular mechanisms of neurogenesis exert high similarity to the ones driving direct neuronal reprogramming, we also discuss the current advances in in vitro and in vivo direct neuronal reprogramming approaches that have employed microRNAs or RNA binding proteins as reprogramming factors, highlighting the so far known mechanisms of their reprogramming action.
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Lin MC, Kuo WH, Chen SY, Hsu JY, Lu LY, Wang CC, Chen YJ, Tsai JS, Li HJ. Ago2/CAV1 interaction potentiates metastasis via controlling Ago2 localization and miRNA action. EMBO Rep 2024; 25:2441-2478. [PMID: 38649663 PMCID: PMC11094075 DOI: 10.1038/s44319-024-00132-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 03/22/2024] [Accepted: 03/27/2024] [Indexed: 04/25/2024] Open
Abstract
Ago2 differentially regulates oncogenic and tumor-suppressive miRNAs in cancer cells. This discrepancy suggests a secondary event regulating Ago2/miRNA action in a context-dependent manner. We show here that a positive charge of Ago2 K212, that is preserved by SIR2-mediated Ago2 deacetylation in cancer cells, is responsible for the direct interaction between Ago2 and Caveolin-1 (CAV1). Through this interaction, CAV1 sequesters Ago2 on the plasma membranes and regulates miRNA-mediated translational repression in a compartment-dependent manner. Ago2/CAV1 interaction plays a role in miRNA-mediated mRNA suppression and in miRNA release via extracellular vesicles (EVs) from tumors into the circulation, which can be used as a biomarker of tumor progression. Increased Ago2/CAV1 interaction with tumor progression promotes aggressive cancer behaviors, including metastasis. Ago2/CAV1 interaction acts as a secondary event in miRNA-mediated suppression and increases the complexity of miRNA actions in cancer.
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Affiliation(s)
- Meng-Chieh Lin
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli, 35053, Taiwan
| | - Wen-Hung Kuo
- Department of Surgery, National Taiwan University Hospital, Taipei, 100229, Taiwan
| | - Shih-Yin Chen
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli, 35053, Taiwan
- Institute of Biotechnology, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Jing-Ya Hsu
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli, 35053, Taiwan
| | - Li-Yu Lu
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli, 35053, Taiwan
| | - Chen-Chi Wang
- Department of Surgery, National Taiwan University Hospital, Taipei, 100229, Taiwan
| | - Yi-Ju Chen
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli, 35053, Taiwan
| | - Jia-Shiuan Tsai
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli, 35053, Taiwan
| | - Hua-Jung Li
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli, 35053, Taiwan.
- Program in Tissue Engineering and Regenerative Medicine, National Chung Hsing University, Taichung City, 402, Taiwan.
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Kim MW, Moon S, Lee S, Lee H, Kim Y, Kim JY, Kim JY, Kim SI. Exploring miRNA‑target gene profiles associated with drug resistance in patients with breast cancer receiving neoadjuvant chemotherapy. Oncol Lett 2024; 27:158. [PMID: 38426156 PMCID: PMC10902752 DOI: 10.3892/ol.2024.14291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 01/24/2024] [Indexed: 03/02/2024] Open
Abstract
Exosomal microRNAs (miRNAs) are closely related to drug resistance in patients with breast cancer (BC); however, only a few roles of the exosomal miRNA-target gene networks have been clinically implicated in drug resistance in BC. Therefore, the present study aimed to identify the differential expression of exosomal miRNAs associated with drug resistance and their target mRNAs. In vitro microarray analysis was used to verify differentially expressed miRNAs (DEMs) in drug-resistant BC. Next, tumor-derived exosomes (TDEs) were isolated. Furthermore, it was determined whether the candidate drug-resistant miRNAs were also significant in TDEs, and then putative miRNAs in TDEs were validated in plasma samples from 35 patients with BC (20 patients with BC showing no response and 15 patients with BC showing a complete response). It was confirmed that the combination of five exosomal miRNAs, including miR-125b-5p, miR-146a-5p, miR-484, miR-1246-5p and miR-1260b, was effective for predicting therapeutic response to neoadjuvant chemotherapy, with an area under the curve value of 0.95, sensitivity of 75%, and specificity of 95%. Public datasets were analyzed to identify differentially expressed genes (DEGs) related to drug resistance and it was revealed that BAK1, NOVA1, PTGER4, RTKN2, AGO1, CAP1, and ETS1 were the target genes of exosomal miRNAs. Networks between DEMs and DEGs were highly correlated with mitosis, metabolism, drug transport, and immune responses. Consequently, these targets could be used as predictive markers and therapeutic targets for clinical applications to enhance treatment outcomes for patients with BC.
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Affiliation(s)
- Min Woo Kim
- Department of Surgery, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Sol Moon
- Department of Surgery, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Suji Lee
- Department of Surgery, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Hyojung Lee
- Department of Surgery, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Young Kim
- Department of Surgery, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Joon Ye Kim
- Department of Surgery, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Jee Ye Kim
- Department of Surgery, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Seung Il Kim
- Department of Surgery, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
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4
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Perooli FM, Wilkinson KA, Pring K, Hanley JG. An essential role for the RNA helicase DDX6 in NMDA receptor-dependent gene silencing and dendritic spine shrinkage. Sci Rep 2024; 14:3066. [PMID: 38321143 PMCID: PMC10847504 DOI: 10.1038/s41598-024-53484-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 02/01/2024] [Indexed: 02/08/2024] Open
Abstract
MicroRNAs (miRNAs) repress translation of target mRNAs by associating with Argonaute (Ago) proteins in the RNA-induced silencing complex (RISC) to modulate protein expression. Specific miRNAs are required for NMDA receptor (NMDAR)-dependent synaptic plasticity by repressing the translation of proteins involved in dendritic spine morphogenesis. Rapid NMDAR-dependent silencing of Limk1 is essential for spine shrinkage and requires Ago2 phosphorylation at S387. Not all gene silencing events are modulated by S387 phosphorylation, and the mechanisms that govern the selection of specific mRNAs for silencing downstream of S387 phosphorylation are unknown. Here, we show that NMDAR-dependent S387 phosphorylation causes a rapid and transient increase in the association of Ago2 with Limk1, but not Apt1 mRNA. The specific increase in Limk1 mRNA binding to Ago2 requires recruitment of the helicase DDX6 to RISC. Furthermore, we show that DDX6 is required for NMDAR-dependent silencing of Limk1 via miR-134, but not Apt1 via miR-138, and is essential for NMDAR-dependent spine shrinkage. This work defines a novel mechanism for the rapid transduction of NMDAR stimulation into miRNA-mediated translational repression of specific genes to control dendritic spine morphology.
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Affiliation(s)
- Fathima M Perooli
- School of Biochemistry, University of Bristol, University Walk, Bristol, BS8 1TD, UK
| | - Kevin A Wilkinson
- School of Biochemistry, University of Bristol, University Walk, Bristol, BS8 1TD, UK
- School of Physiology, Pharmacology and Neuroscience, University of Bristol, University Walk, Bristol, BS8 1TD, UK
| | - Kate Pring
- School of Biochemistry, University of Bristol, University Walk, Bristol, BS8 1TD, UK
| | - Jonathan G Hanley
- School of Biochemistry, University of Bristol, University Walk, Bristol, BS8 1TD, UK.
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5
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Chi X, Wang L, Liu H, Zhang Y, Shen W. Post-stroke cognitive impairment and synaptic plasticity: A review about the mechanisms and Chinese herbal drugs strategies. Front Neurosci 2023; 17:1123817. [PMID: 36937659 PMCID: PMC10014821 DOI: 10.3389/fnins.2023.1123817] [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: 12/14/2022] [Accepted: 02/13/2023] [Indexed: 03/06/2023] Open
Abstract
Post-stroke cognitive impairment, is a major complication of stroke, characterized by cognitive dysfunction, which directly affects the quality of life. Post-stroke cognitive impairment highlights the causal relationship between stroke and cognitive impairment. The pathological damage of stroke, including the increased release of excitatory amino acids, oxidative stress, inflammatory responses, apoptosis, changed neurotrophic factor levels and gene expression, influence synaptic plasticity. Synaptic plasticity refers to the activity-dependent changes in the strength of synaptic connections and efficiency of synaptic transmission at pre-existing synapses and can be divided into structural synaptic plasticity and functional synaptic plasticity. Changes in synaptic plasticity have been proven to play important roles in the occurrence and treatment of post-stroke cognitive impairment. Evidence has indicated that Chinese herbal drugs have effect of treating post-stroke cognitive impairment. In this review, we overview the influence of pathological damage of stroke on synaptic plasticity, analyze the changes of synaptic plasticity in post-stroke cognitive impairment, and summarize the commonly used Chinese herbal drugs whose active ingredient or extracts can regulate synaptic plasticity. This review will summarize the relationship between post-stroke cognitive impairment and synaptic plasticity, provide new ideas for future exploration of the mechanism of post-stroke cognitive impairment, compile evidence of applying Chinese herbal drugs to treat post-stroke cognitive impairment and lay a foundation for the development of novel formulas for treating post-stroke cognitive impairment.
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Affiliation(s)
- Xiansu Chi
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Liuding Wang
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Hongxi Liu
- Graduate School, Beijing University of Chinese Medicine, Beijing, China
| | - Yunling Zhang
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Wei Shen
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
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6
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Zhang HC, Du Y, Chen L, Yuan ZQ, Cheng Y. MicroRNA schizophrenia: Etiology, biomarkers and therapeutic targets. Neurosci Biobehav Rev 2023; 146:105064. [PMID: 36707012 DOI: 10.1016/j.neubiorev.2023.105064] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 01/11/2023] [Accepted: 01/22/2023] [Indexed: 01/26/2023]
Abstract
The three sets of symptoms associated with schizophrenia-positive, negative, and cognitive-are burdensome and have serious effects on public health, which affects up to 1% of the population. It is now commonly believed that in addition to the traditional dopaminergic mesolimbic pathway, the etiology of schizophrenia also includes neuronal networks, such as glutamate, GABA, serotonin, BDNF, oxidative stress, inflammation and the immune system. Small noncoding RNA molecules called microRNAs (miRNAs) have come to light as possible participants in the pathophysiology of schizophrenia in recent years by having an impact on these systems. These small RNAs regulate the stability and translation of hundreds of target transcripts, which has an impact on the entire gene network. There may be improved approaches to treat and diagnose schizophrenia if it is understood how these changes in miRNAs alter the critical related signaling pathways that drive the development and progression of the illness.
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Affiliation(s)
- Heng-Chang Zhang
- Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Yang Du
- Key Laboratory of Ethnomedicine of Ministry of Education, School of Pharmacy, Minzu University of China, Beijing, China
| | - Lei Chen
- Key Laboratory of Ethnomedicine of Ministry of Education, School of Pharmacy, Minzu University of China, Beijing, China
| | - Zeng-Qiang Yuan
- Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China; Institute of Basic Medical Sciences, Academy of Military Medical Sciences, Beijing 100850, China
| | - Yong Cheng
- Center on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China; Key Laboratory of Ethnomedicine of Ministry of Education, School of Pharmacy, Minzu University of China, Beijing, China; Institute of National Security, Minzu University of China, Beijing, China.
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7
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Tajima Y, Ito K, Yuan Y, Frank MO, Saito Y, Darnell RB. NOVA1 acts on Impact to regulate hypothalamic function and translation in inhibitory neurons. Cell Rep 2023; 42:112050. [PMID: 36716149 PMCID: PMC10382602 DOI: 10.1016/j.celrep.2023.112050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 11/12/2022] [Accepted: 01/15/2023] [Indexed: 01/30/2023] Open
Abstract
We describe a patient haploinsufficient for the neuronal RNA binding protein NOVA1 who developed a behavioral motor hyperactivity disorder, suggesting a role of NOVA1 in postnatal motor inhibition. To investigate Nova1's action in adult Gad2+ inhibitory neurons, we generated a conditional Nova1-null mouse (Nova1-cKOGad2-cre). Strikingly, the phenotypes of these mice show many similarities to the NOVA1 haploinsufficient patient and identify a function of Nova1 in the hypothalamus. Molecularly, Nova1 loss in Gad2-positive neurons alters downstream expression of Impact mRNA, along with a subset of RNAs encoding electron transport chain-related factors and ribosomal proteins. NOVA1 stabilizes Impact mRNA by binding its 3' UTR, antagonizing the actions of miR-138 and miR-124. Together, these studies demonstrate actions of NOVA1 in adult hypothalamic neurons, mechanisms by which it functions in translation and metabolism, including through direct binding to Impact mRNA, and illuminate its role in human neurologic disease.
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Affiliation(s)
- Yoko Tajima
- Laboratory of Molecular Neuro-oncology, The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA
| | - Keiichi Ito
- Laboratory of Biochemistry and Molecular Biology, The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA
| | - Yuan Yuan
- Laboratory of Molecular Neuro-oncology, The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA
| | - Mayu O Frank
- Laboratory of Molecular Neuro-oncology, The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA
| | - Yuhki Saito
- Laboratory of Molecular Neuro-oncology, The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA
| | - Robert B Darnell
- Laboratory of Molecular Neuro-oncology, The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA; Howard Hughes Medical Institute, The Rockefeller University, New York, NY, USA.
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8
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Mauro M, Berretta M, Palermo G, Cavalieri V, La Rocca G. The Multiplicity of Argonaute Complexes in Mammalian Cells. J Pharmacol Exp Ther 2023; 384:1-9. [PMID: 35667689 PMCID: PMC9827513 DOI: 10.1124/jpet.122.001158] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 05/12/2022] [Accepted: 05/13/2022] [Indexed: 01/12/2023] Open
Abstract
Argonautes (AGOs) are a highly conserved family of proteins found in most eukaryotes and involved in mechanisms of gene regulation, both at the transcriptional and post-transcriptional level. Among other functions, AGO proteins associate with microRNAs (miRNAs) to mediate the post-transcriptional repression of protein-coding genes. In this process, AGOs associate with members of the trinucleotide repeat containing 6 protein (TNRC6) family to form the core of the RNA-induced silencing complex (RISC), the effector machinery that mediates miRNA function. However, the description of the exact composition of the RISC has been a challenging task due to the fact the AGO's interactome is dynamically regulated in a cell type- and condition-specific manner. Here, we summarize some of the most significant studies that have identified AGO complexes in mammalian cells, as well as the approaches used to characterize them. Finally, we discuss possible opportunities to exploit what we have learned on the properties of the RISC to develop novel anti-cancer therapies. SIGNIFICANCE STATEMENT: The RNA-induced silencing complex (RISC) is the molecular machinery that mediates miRNA function in mammals. Studies over the past two decades have shed light on important biochemical and functional properties of this complex. However, many aspects of this complex await further elucidation, mostly due to technical limitations that have hindered full characterization. Here, we summarize some of the most significant studies on the mammalian RISC and discuss possible sources of biases in the approaches used to characterize it.
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Affiliation(s)
- Maurizio Mauro
- Department of Medicine, Albert Einstein College of Medicine, New York, New York (M.M.); Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy (M.B.); Gruppo Oncologico Ricercatori Italiani, GORI ONLUS, Pordenone, Italy (M.B.); Department of Biomedical and Biotechnological Sciences, University of Catania, Catania Italy (G.P.); Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Palermo, Italy (V.C.); and Cancer Biology and Genetics Program, Memorial Sloan-Kettering Cancer Center, New York, New York (G.L.R.)
| | - Massimiliano Berretta
- Department of Medicine, Albert Einstein College of Medicine, New York, New York (M.M.); Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy (M.B.); Gruppo Oncologico Ricercatori Italiani, GORI ONLUS, Pordenone, Italy (M.B.); Department of Biomedical and Biotechnological Sciences, University of Catania, Catania Italy (G.P.); Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Palermo, Italy (V.C.); and Cancer Biology and Genetics Program, Memorial Sloan-Kettering Cancer Center, New York, New York (G.L.R.)
| | - Giuseppe Palermo
- Department of Medicine, Albert Einstein College of Medicine, New York, New York (M.M.); Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy (M.B.); Gruppo Oncologico Ricercatori Italiani, GORI ONLUS, Pordenone, Italy (M.B.); Department of Biomedical and Biotechnological Sciences, University of Catania, Catania Italy (G.P.); Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Palermo, Italy (V.C.); and Cancer Biology and Genetics Program, Memorial Sloan-Kettering Cancer Center, New York, New York (G.L.R.)
| | - Vincenzo Cavalieri
- Department of Medicine, Albert Einstein College of Medicine, New York, New York (M.M.); Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy (M.B.); Gruppo Oncologico Ricercatori Italiani, GORI ONLUS, Pordenone, Italy (M.B.); Department of Biomedical and Biotechnological Sciences, University of Catania, Catania Italy (G.P.); Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Palermo, Italy (V.C.); and Cancer Biology and Genetics Program, Memorial Sloan-Kettering Cancer Center, New York, New York (G.L.R.)
| | - Gaspare La Rocca
- Department of Medicine, Albert Einstein College of Medicine, New York, New York (M.M.); Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy (M.B.); Gruppo Oncologico Ricercatori Italiani, GORI ONLUS, Pordenone, Italy (M.B.); Department of Biomedical and Biotechnological Sciences, University of Catania, Catania Italy (G.P.); Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Palermo, Italy (V.C.); and Cancer Biology and Genetics Program, Memorial Sloan-Kettering Cancer Center, New York, New York (G.L.R.)
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9
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Fisher E, Feng J. RNA splicing regulators play critical roles in neurogenesis. WILEY INTERDISCIPLINARY REVIEWS. RNA 2022; 13:e1728. [PMID: 35388651 DOI: 10.1002/wrna.1728] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 03/07/2022] [Accepted: 03/09/2022] [Indexed: 06/14/2023]
Abstract
Alternative RNA splicing increases transcript diversity in different cell types and under varying conditions. It is executed with the help of RNA splicing regulators (RSRs), which are operationally defined as RNA-binding proteins (RBPs) that regulate alternative splicing, but not directly catalyzing the chemical reactions of splicing. By systematically searching for RBPs and manually identifying those that regulate splicing, we curated 305 RSRs in the human genome. Surprisingly, most of the RSRs are involved in neurogenesis. Among these RSRs, we focus on nine families (PTBP, NOVA, RBFOX, ELAVL, CELF, DBHS, MSI, PCBP, and MBNL) that play essential roles in the neurogenic pathway. A better understanding of their functions will provide novel insights into the role of splicing in brain development, health, and disease. This comprehensive review serves as a stepping-stone to explore the diverse and complex set of RSRs as fundamental regulators of neural development. This article is categorized under: RNA-Based Catalysis > RNA Catalysis in Splicing and Translation RNA Interactions with Proteins and Other Molecules > Protein-RNA Interactions: Functional Implications RNA Processing > Splicing Regulation/Alternative Splicing.
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Affiliation(s)
- Emily Fisher
- Department of Physiology and Biophysics, State University of New York at Buffalo, Buffalo, New York, USA
- Veterans Affairs Western New York Healthcare System, Buffalo, New York, USA
| | - Jian Feng
- Department of Physiology and Biophysics, State University of New York at Buffalo, Buffalo, New York, USA
- Veterans Affairs Western New York Healthcare System, Buffalo, New York, USA
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10
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Li D, Shen M, Deng X, Bai Y. MicroRNA miR-27a-3p accelerates cardiac hypertrophy by targeting neuro-oncological ventral antigen 1. Bioengineered 2022; 13:8982-8993. [PMID: 35348441 PMCID: PMC9161956 DOI: 10.1080/21655979.2022.2054150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
MiRNAs are a class of small non-coding RNAs (ncRNAs) responsible for post-transcriptional regulation of target genes. Accumulating evidence indicates that miRNAs are implicated in the progression of cardiac hypertrophy. Therefore, understanding the molecular mechanisms how these miRNAs regulate cardiac hypertrophy is useful for diagnosis and monitoring of disease progression. In this study, to investigate the effect of miR-27a-3p, we established an in vitro cardiac hypertrophy model by treating H9c2 cardiomyocytes with angiotensin II (Ang II) and an in vivo model through the chronic infusion of Ang II into mice. As revealed by our experimental results, miR-27a-3p expression was significantly increased in clinical samples, animal and cell models of cardiac hypertrophy. Inhibiting miR-27a-3p mitigated cardiac hypertrophy phenotype induced by Ang II. Additionally, our work identified NOVA1 (neuro-oncological ventral antigen 1) as a downstream target of miR-27a-3p. miR-27a-3p overexpression reduced NOVA1 protein level and mRNA expression. Consistently, NOVA1 silencing promoted cardiac hypertrophy phenotype induced by Ang II. In summary, these results suggest that the upregulation of miR-27a-3p may serve as a diagnostic factor for cardiac hypertrophy, and miR-27a-3p upregulation promotes cardiac hypertrophy by targeting NOVA1.
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Affiliation(s)
- Dongyun Li
- Department of Healthcare, The Second Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Mingzhi Shen
- Department of Cardiovascular Medicine, Chinese Pla General Hospital Hainan Hospital, 80 Jianglin Road, Haitang District, Sanya, China
| | - Xinxin Deng
- Department of Inspection, Chinese Pla General Hospital Hainan Hospital, Sanya, China
| | - Yongyi Bai
- Department of Cardiovascular Medicine, The Second Medical Center of Chinese PLA General Hospital, Beijing, China
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11
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Silencing of Ago-2 Interacting Protein SERBP1 Relieves KCC2 Repression by miR-92 in Neurons. Cells 2022; 11:cells11061052. [PMID: 35326503 PMCID: PMC8947033 DOI: 10.3390/cells11061052] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 03/11/2022] [Accepted: 03/18/2022] [Indexed: 12/13/2022] Open
Abstract
RNA-binding proteins (RBPs) play important roles in modulating miRNA-mediated mRNA target repression. Argonaute2 (Ago2) is an essential component of the RNA-induced silencing complex (RISC) that plays a central role in silencing mechanisms via small non-coding RNA molecules known as siRNAs and miRNAs. Small RNAs loaded into Argonaute proteins catalyze endoribonucleolytic cleavage of target RNAs or recruit factors responsible for translational silencing and mRNA target destabilization. In previous studies we have shown that KCC2, a neuronal Cl (−) extruding K (+) Cl (−) co-transporter 2, is regulated by miR-92 in neuronal cells. Searching for Ago2 partners by immunoprecipitation and LC-MS/MS analysis, we isolated among other proteins the Serpine mRNA binding protein 1 (SERBP1) from SH-SY5Y neuroblastoma cells. Exploring the role of SERBP1 in miRNA-mediated gene silencing in SH-SY5Y cells and primary hippocampal neurons, we demonstrated that SERBP1 silencing regulates KCC2 expression through the 3′ untranslated region (UTR). In addition, we found that SERBP1 as well as Ago2/miR-92 complex bind to KCC2 3′UTR. Finally, we demonstrated the attenuation of miR-92-mediated repression of KCC2 3′UTR by SERBP1 silencing. These findings advance our knowledge regarding the miR-92-mediated modulation of KCC2 translation in neuronal cells and highlight SERBP1 as a key component of this gene regulation.
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12
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Liu D, Liang M, Zhu L, Zhou TT, Wang Y, Wang R, Wu FF, Goh ELK, Chen T. Potential Ago2/miR-3068-5p Cascades in the Nucleus Accumbens Contribute to Methamphetamine-Induced Locomotor Sensitization of Mice. Front Pharmacol 2021; 12:708034. [PMID: 34483916 PMCID: PMC8414410 DOI: 10.3389/fphar.2021.708034] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 07/12/2021] [Indexed: 01/24/2023] Open
Abstract
Dysregulation of microRNA (miRNA) biogenesis is involved in drug addiction. Argonaute2 (Ago2), a specific splicing protein involved in the generation of miRNA, was found to be dysregulated in the nucleus accumbens (NAc) of methamphetamine (METH)-sensitized mice in our previous study. Here, we determined whether Ago2 in the NAc regulates METH sensitization in mice and identified Ago2-dependent miRNAs involved in this process. We found a gradual reduction in Ago2 expression in the NAc following repeated METH use. METH-induced hyperlocomotor activity in mice was strengthened by knocking down NAc neuronal levels of Ago2 but reduced by overexpressing Ago2 in NAc neurons. Surprisingly, miR-3068-5p was upregulated following overexpression of Ago2 and downregulated by silencing Ago2 in the NAc. Knocking down miR-3068-5p, serving as an Ago2-dependent miRNA, strengthened the METH sensitization responses in mice. These findings demonstrated that dysregulated Ago2 in neurons in the NAc is capable of regulating METH sensitization and suggested a potential role of Ago2-dependent miR-3068-5p in METH sensitization.
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Affiliation(s)
- Dan Liu
- College of Forensic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an, China.,The Key Laboratory of Health Ministry for Forensic Science, Xi'an Jiaotong University, Xi'an, China.,Guangdong Provincial Key Laboratory of Brain Connectome and Behavior, CAS Key Laboratory of Brain Connectome and Manipulation, The Brain Cognition and Brain Disease Institute, Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Min Liang
- College of Forensic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an, China.,The Key Laboratory of Health Ministry for Forensic Science, Xi'an Jiaotong University, Xi'an, China
| | - Li Zhu
- College of Forensic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an, China.,The Key Laboratory of Health Ministry for Forensic Science, Xi'an Jiaotong University, Xi'an, China
| | - Ting-Ting Zhou
- College of Forensic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an, China.,The Key Laboratory of Health Ministry for Forensic Science, Xi'an Jiaotong University, Xi'an, China
| | - Yu Wang
- College of Forensic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an, China.,The Key Laboratory of Health Ministry for Forensic Science, Xi'an Jiaotong University, Xi'an, China
| | - Rui Wang
- College of Forensic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an, China.,The Key Laboratory of Health Ministry for Forensic Science, Xi'an Jiaotong University, Xi'an, China
| | - Fei-Fei Wu
- College of Forensic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an, China.,The Key Laboratory of Health Ministry for Forensic Science, Xi'an Jiaotong University, Xi'an, China
| | - Eyleen L K Goh
- Department of Research, National Neuroscience Institute, Singapore, Singapore.,Neuroscience and Mental Health Faculty, Lee Kong China School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - Teng Chen
- College of Forensic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an, China.,The Key Laboratory of Health Ministry for Forensic Science, Xi'an Jiaotong University, Xi'an, China
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13
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SRC3 acetylates calmodulin in the mouse brain to regulate synaptic plasticity and fear learning. J Biol Chem 2021; 297:101044. [PMID: 34358562 PMCID: PMC8390517 DOI: 10.1016/j.jbc.2021.101044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 07/20/2021] [Accepted: 08/02/2021] [Indexed: 11/23/2022] Open
Abstract
Protein acetylation is a reversible posttranslational modification, which is regulated by lysine acetyltransferase (KAT) and lysine deacetyltransferase (KDAC). Although protein acetylation has been shown to regulate synaptic plasticity, this was mainly for histone protein acetylation. The function and regulation of nonhistone protein acetylation in synaptic plasticity and learning remain largely unknown. Calmodulin (CaM), a ubiquitous Ca2+ sensor, plays critical roles in synaptic plasticity such as long-term potentiation (LTP). During LTP induction, activation of NMDA receptor triggers Ca2+ influx, and the Ca2+ binds with CaM and activates calcium/calmodulin-dependent protein kinase IIα (CaMKIIα). In our previous study, we demonstrated that acetylation of CaM was important for synaptic plasticity and fear learning in mice. However, the KAT responsible for CaM acetylation is currently unknown. Here, following an HEK293 cell-based screen of candidate KATs, steroid receptor coactivator 3 (SRC3) is identified as the most active KAT for CaM. We further demonstrate that SRC3 interacts with and acetylates CaM in a Ca2+ and NMDA receptor-dependent manner. We also show that pharmacological inhibition or genetic downregulation of SRC3 impairs CaM acetylation, synaptic plasticity, and contextual fear learning in mice. Moreover, the effects of SRC3 inhibition on synaptic plasticity and fear learning could be rescued by 3KQ-CaM, a mutant form of CaM, which mimics acetylation. Together, these observations demonstrate that SRC3 acetylates CaM and regulates synaptic plasticity and learning in mice.
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14
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Zhang HL, Zhao B, Yang P, Du YQ, Han W, Xu J, Yin DM. Steroid Receptor Coactivator 3 Regulates Synaptic Plasticity and Hippocampus-dependent Memory. Neurosci Bull 2021; 37:1645-1657. [PMID: 34228315 PMCID: PMC8643392 DOI: 10.1007/s12264-021-00741-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 02/27/2021] [Indexed: 11/28/2022] Open
Abstract
Steroid hormones play important roles in brain development and function. The signaling of steroid hormones depends on the interaction between steroid receptors and their coactivators. Although the function of steroid receptor coactivators has been extensively studied in other tissues, their functions in the central nervous system are less well investigated. In this study, we addressed the function of steroid receptor coactivator 3 (SRC3) - a member of the p160 SRC protein family that is expressed predominantly in the hippocampus. While hippocampal development was not altered in Src3+/- mice, hippocampus-dependent functions such as short-term memory and spatial memory were impaired. We further demonstrated that the deficient learning and memory in Src3+/- mice was strongly associated with the impairment of long-term potentiation (LTP) at Schaffer Collateral-CA1 synapses. Mechanistic studies indicated that Src3+/- mutation altered the composition of N-methyl-D-aspartate receptor subunits in the postsynaptic densities of hippocampal neurons. Finally, we showed that SRC3 regulated synaptic plasticity and learning mainly dependent on its lysine acetyltransferase activity. Taken together, these results reveal previously unknown functions of SRC3 in the hippocampus and thus may provide insight into how steroid hormones regulate brain function.
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Affiliation(s)
- Hai-Long Zhang
- Key Laboratory of Brain Functional Genomics, Ministry of Education and Shanghai, School of Life Science, East China Normal University, Shanghai, 200062, China
| | - Bing Zhao
- MOE Frontiers Center for Brain Science, Institute for Translational Brain Research, Fudan University, Shanghai, 200032, China
| | - Pin Yang
- Key Laboratory of Brain Functional Genomics, Ministry of Education and Shanghai, School of Life Science, East China Normal University, Shanghai, 200062, China
| | - Yin-Quan Du
- Key Laboratory of Brain Functional Genomics, Ministry of Education and Shanghai, School of Life Science, East China Normal University, Shanghai, 200062, China
| | - Wei Han
- Key Laboratory of Brain Functional Genomics, Ministry of Education and Shanghai, School of Life Science, East China Normal University, Shanghai, 200062, China
| | - Jianming Xu
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Dong-Min Yin
- Key Laboratory of Brain Functional Genomics, Ministry of Education and Shanghai, School of Life Science, East China Normal University, Shanghai, 200062, China.
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15
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Circular RNA UVRAG Mediated by Alternative Splicing Factor NOVA1 Regulates Adhesion and Migration of Vascular Smooth Muscle Cells. Genes (Basel) 2021; 12:genes12030418. [PMID: 33799408 PMCID: PMC7999860 DOI: 10.3390/genes12030418] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 03/10/2021] [Accepted: 03/12/2021] [Indexed: 02/06/2023] Open
Abstract
The movement of abnormal vascular smooth muscle cells (VSMCs) contributes to intimal hyperplasia in vein graft disease. Circular RNAs (circRNAs) are single stranded RNAs with 3’ and 5’ ends covalently joined together. They have been shown to regulate cell function in many diseases. NOVA1 is considered to be a brain-specific splicing factor that plays an important role in the nervous system and cancer. The role of NOVA1 in VSMCs remains unclear. In the present study, transcriptome sequencing was used to identify differentially expressed circRNAs in the rat vein graft model. A novel circRNA, circUVRAG, was decreased in the grafted vein and stably located in the cytoplasm. Knockdown of circUVRAG suppressed VSMC adhesion and migration. In addition, we demonstrated that the alternative splicing factor NOVA1 co-located with UVRAG pre-mRNA in the nucleus and modulated the production of circUVRAG. These new discoveries may serve as a potential means to treat intimal hyperplasia after vein grafts.
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16
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Kinoshita C, Kikuchi-Utsumi K, Aoyama K, Suzuki R, Okamoto Y, Matsumura N, Omata D, Maruyama K, Nakaki T. Inhibition of miR-96-5p in the mouse brain increases glutathione levels by altering NOVA1 expression. Commun Biol 2021; 4:182. [PMID: 33568779 PMCID: PMC7876013 DOI: 10.1038/s42003-021-01706-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 01/15/2021] [Indexed: 12/26/2022] Open
Abstract
Glutathione (GSH) is an important antioxidant that plays a critical role in neuroprotection. GSH depletion in neurons induces oxidative stress and thereby promotes neuronal damage, which in turn is regarded as a hallmark of the early stage of neurodegenerative diseases. The neuronal GSH level is mainly regulated by cysteine transporter EAAC1 and its inhibitor, GTRAP3-18. In this study, we found that the GTRAP3-18 level was increased by up-regulation of the microRNA miR-96-5p, which was found to decrease EAAC1 levels in our previous study. Since the 3'-UTR region of GTRAP3-18 lacks the consensus sequence for miR-96-5p, an unidentified protein should be responsible for the intermediate regulation of GTRAP3-18 expression by miR-96-5p. Here, we discovered that RNA-binding protein NOVA1 functions as an intermediate protein for GTRAP3-18 expression via miR-96-5p. Moreover, we show that intra-arterial injection of a miR-96-5p-inhibiting nucleic acid to living mice by a drug delivery system using microbubbles and ultrasound decreased the level of GTRAP3-18 via NOVA1 and increased the levels of EAAC1 and GSH in the dentate gyrus of the hippocampus. These findings suggest that the delivery of a miR-96-5p inhibitor to the brain would efficiently increase the neuroprotective activity by increasing GSH levels via EAAC1, GTRAP3-18 and NOVA1.
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Affiliation(s)
- Chisato Kinoshita
- Department of Pharmacology, Teikyo University School of Medicine, Tokyo, Japan
| | | | - Koji Aoyama
- Department of Pharmacology, Teikyo University School of Medicine, Tokyo, Japan
| | - Ryo Suzuki
- Laboratory of Drug and Gene Delivery, Faculty of Pharma-Science, Teikyo University, Tokyo, Japan
| | - Yayoi Okamoto
- Department of Pharmacology, Teikyo University School of Medicine, Tokyo, Japan
- Teikyo University Support Center for Women Physicians and Researchers, Tokyo, Japan
| | - Nobuko Matsumura
- Department of Pharmacology, Teikyo University School of Medicine, Tokyo, Japan
| | - Daiki Omata
- Laboratory of Drug and Gene Delivery, Faculty of Pharma-Science, Teikyo University, Tokyo, Japan
| | - Kazuo Maruyama
- Laboratory of Theranostics, Faculty of Pharma-Science, Teikyo University, Tokyo, Japan
| | - Toshio Nakaki
- Department of Pharmacology, Teikyo University School of Medicine, Tokyo, Japan.
- Faculty of Pharma-Science, Teikyo University, Tokyo, Japan.
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17
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Germline AGO2 mutations impair RNA interference and human neurological development. Nat Commun 2020; 11:5797. [PMID: 33199684 PMCID: PMC7670403 DOI: 10.1038/s41467-020-19572-5] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Accepted: 09/21/2020] [Indexed: 12/29/2022] Open
Abstract
ARGONAUTE-2 and associated miRNAs form the RNA-induced silencing complex (RISC), which targets mRNAs for translational silencing and degradation as part of the RNA interference pathway. Despite the essential nature of this process for cellular function, there is little information on the role of RISC components in human development and organ function. We identify 13 heterozygous mutations in AGO2 in 21 patients affected by disturbances in neurological development. Each of the identified single amino acid mutations result in impaired shRNA-mediated silencing. We observe either impaired RISC formation or increased binding of AGO2 to mRNA targets as mutation specific functional consequences. The latter is supported by decreased phosphorylation of a C-terminal serine cluster involved in mRNA target release, increased formation of dendritic P-bodies in neurons and global transcriptome alterations in patient-derived primary fibroblasts. Our data emphasize the importance of gene expression regulation through the dynamic AGO2-RNA association for human neuronal development. AGO2 binds to miRNAs to repress expression of cognate target mRNAs. Here the authors report that heterozygous AGO2 mutations result in defects in neurological development and impair RNA interference.
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18
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Hussein D, Dallol A, Quintas R, Schulten HJ, Alomari M, Baeesa S, Bangash M, Alghamdi F, Khan I, ElAssouli MZM, Saka M, Carracedo A, Chaudhary A, Abuzenadah A. Overlapping variants in the blood, tissues and cell lines for patients with intracranial meningiomas are predominant in stem cell-related genes. Heliyon 2020; 6:e05632. [PMID: 33305042 PMCID: PMC7710648 DOI: 10.1016/j.heliyon.2020.e05632] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 10/19/2020] [Accepted: 11/25/2020] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVE Bulk tissue genomic analysis of meningiomas identified common somatic mutations, however, it often excluded blood-related variants. In contrast, genomic characterisation of primary cell lines that can provide critical information regarding growth and proliferation, have been rare. In our work, we identified the variants that are present in the blood, tissues and corresponding cell lines that are likely to be predictive, tumorigenic and progressive. METHOD Whole-exome sequencing was used to identify variants and distinguish related pathways that exist in 42 blood, tissues and corresponding cell lines (BTCs) samples for patients with intracranial meningiomas. Conventional sequencing was used for the confirmation of variants. Integrative analysis of the gene expression for the corresponding samples was utilised for further interpretations. RESULTS In total, 926 BTC variants were detected, implicating 845 genes. A pathway analysis of all BTC genes with damaging variants indicated the 'cell morphogenesis involved in differentiation' stem cell-related pathway to be the most frequently affected pathway. Concordantly, five stem cell-related genes, GPRIN2, ALDH3B2, ASPN, THSD7A and SIGLEC6, showed BTC variants in at least five of the patients. Variants that were heterozygous in the blood and homozygous in the tissues or the corresponding cell lines were rare (average: 1.3 ± 0.3%), and included variants in the RUNX2 and CCDC114 genes. An analysis comparing the variants detected only in tumours with aggressive features indicated a total of 240 BTC genes, implicating the 'homophilic cell adhesion via plasma membrane adhesion molecules' pathway, and identifying the stem cell-related transcription coactivator NCOA3/AIB1/SRC3 as the most frequent BTC gene. Further analysis of the possible impact of the poly-Q mutation present in the NCOA3 gene indicated associated deregulation of 15 genes, including the up-regulation of the stem cell related SEMA3D gene and the angiogenesis related VEGFA gene. CONCLUSION Stem cell-related pathways and genes showed high prevalence in the BTC variants, and novel variants in stem cell-related genes were identified for meningioma. These variants can potentially be used as predictive, tumorigenic and progressive biomarkers for meningioma.
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Affiliation(s)
- Deema Hussein
- Neurooncology Translational Group, King Fahd Medical Research Center, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, P.O. Box 80216, Jeddah, 21589, Saudi Arabia
| | - Ashraf Dallol
- Centre of Innovation for Personalized Medicine, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Center of Excellence in Genomic Medicine Research, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Rita Quintas
- Galician Foundation of Genomic Medicine-SERGAS, University of Santiago de Compostela, 15706 Santiago de Compostela, Spain
| | - Hans-Juergen Schulten
- Center of Excellence in Genomic Medicine Research, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mona Alomari
- Neurooncology Translational Group, King Fahd Medical Research Center, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, P.O. Box 80216, Jeddah, 21589, Saudi Arabia
| | - Saleh Baeesa
- Division of Neurosurgery, Faculty of Medicine, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mohammed Bangash
- Division of Neurosurgery, Faculty of Medicine, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Fahad Alghamdi
- Pathology Department, Faculty of Medicine, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Ishaq Khan
- Institute of Basic Medical Sciences, Khyber Medical University, Peshawar 25100, Pakistan
| | - M-Zaki Mustafa ElAssouli
- Neurooncology Translational Group, King Fahd Medical Research Center, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, P.O. Box 80216, Jeddah, 21589, Saudi Arabia
| | - Mohamad Saka
- Neurooncology Translational Group, King Fahd Medical Research Center, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, P.O. Box 80216, Jeddah, 21589, Saudi Arabia
| | - Angel Carracedo
- Center of Excellence in Genomic Medicine Research, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Galician Foundation of Genomic Medicine-SERGAS, University of Santiago de Compostela, 15706 Santiago de Compostela, Spain
| | - Adeel Chaudhary
- Neurooncology Translational Group, King Fahd Medical Research Center, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, P.O. Box 80216, Jeddah, 21589, Saudi Arabia
- Centre of Innovation for Personalized Medicine, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Center of Excellence in Genomic Medicine Research, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Adel Abuzenadah
- Neurooncology Translational Group, King Fahd Medical Research Center, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, P.O. Box 80216, Jeddah, 21589, Saudi Arabia
- Centre of Innovation for Personalized Medicine, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Center of Excellence in Genomic Medicine Research, Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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19
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Meldolesi J. Alternative Splicing by NOVA Factors: From Gene Expression to Cell Physiology and Pathology. Int J Mol Sci 2020; 21:ijms21113941. [PMID: 32486302 PMCID: PMC7312376 DOI: 10.3390/ijms21113941] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 05/27/2020] [Accepted: 05/28/2020] [Indexed: 12/24/2022] Open
Abstract
NOVA1 and NOVA2, the two members of the NOVA family of alternative splicing factors, bind YCAY clusters of pre-mRNAs and assemble spliceosomes to induce the maintenance/removal of introns and exons, thus governing the development of mRNAs. Members of other splicing families operate analogously. Activity of NOVAs accounts for up to 700 alternative splicing events per cell, taking place both in the nucleus (co-transcription of mRNAs) and in the cytoplasm. Brain neurons express high levels of NOVAs, with NOVA1 predominant in cerebellum and spinal cord, NOVA2 in the cortex. Among brain physiological processes NOVAs play critical roles in axon pathfinding and spreading, structure and function of synapses, as well as the regulation of surface receptors and voltage-gated channels. In pathology, NOVAs contribute to neurodegenerative diseases and epilepsy. In vessel endothelial cells, NOVA2 is essential for angiogenesis, while in adipocytes, NOVA1 contributes to regulation of thermogenesis and obesity. In many cancers NOVA1 and also NOVA2, by interacting with specific miRNAs and by additional mechanisms, activate oncogenic roles promoting cell proliferation, colony formation, migration, and invasion. In conclusion, NOVAs regulate cell functions of physiological and pathological nature. Single cell identification and distinction, and new therapies addressed to NOVA targets might be developed in the near future.
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Affiliation(s)
- Jacopo Meldolesi
- Department of Neuroscience, San Raffaele Institute and San Raffaele University, via Olgettina 58, 20132 Milan, Italy
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20
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Varderidou-Minasian S, Verheijen BM, Schätzle P, Hoogenraad CC, Pasterkamp RJ, Altelaar M. Deciphering the Proteome Dynamics during Development of Neurons Derived from Induced Pluripotent Stem Cells. J Proteome Res 2020; 19:2391-2403. [PMID: 32357013 PMCID: PMC7281779 DOI: 10.1021/acs.jproteome.0c00070] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
![]()
Neuronal development is a complex
multistep process that shapes
neurons by progressing though several typical stages, including axon
outgrowth, dendrite formation, and synaptogenesis. Knowledge of the
mechanisms of neuronal development is mostly derived from the study
of animal models. Advances in stem cell technology now enable us to
generate neurons from human induced pluripotent stem cells (iPSCs).
Here we provide a mass spectrometry-based quantitative proteomic signature
of human iPSC-derived neurons, i.e., iPSC-derived induced glutamatergic
neurons and iPSC-derived motor neurons, throughout neuronal differentiation.
Tandem mass tag 10-plex labeling was carried out to perform proteomic
profiling of cells at different time points. Our analysis reveals
significant expression changes (FDR < 0.001) of several key proteins
during the differentiation process, e.g., proteins involved in the
Wnt and Notch signaling pathways. Overall, our data provide a rich
resource of information on protein expression during human iPSC neuron
differentiation.
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Affiliation(s)
- Suzy Varderidou-Minasian
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, University of Utrecht, Padualaan 8, 3584 CH Utrecht, The Netherlands.,Netherlands Proteomics Center, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Bert M Verheijen
- Department of Translational Neuroscience, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht University, 3584 CG Utrecht, The Netherlands
| | - Philipp Schätzle
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, 3584 CH Utrecht, The Netherlands
| | - Casper C Hoogenraad
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, 3584 CH Utrecht, The Netherlands
| | - R Jeroen Pasterkamp
- Department of Translational Neuroscience, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht University, 3584 CG Utrecht, The Netherlands
| | - Maarten Altelaar
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, University of Utrecht, Padualaan 8, 3584 CH Utrecht, The Netherlands.,Netherlands Proteomics Center, Padualaan 8, 3584 CH Utrecht, The Netherlands
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21
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Chai D, Yan J, Li C, Sun Y, Jiang H. Sevoflurane inhibits neuronal migration and axon growth in the developing mouse cerebral cortex. Aging (Albany NY) 2020; 12:6436-6455. [PMID: 32271715 PMCID: PMC7185136 DOI: 10.18632/aging.103041] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Accepted: 03/10/2020] [Indexed: 11/25/2022]
Abstract
The highly organized laminar structure of the mammalian brain is dependent on successful neuronal migration, and migration deficits can cause lissencephaly and behavioral and cognitive defects. Here, we investigated the contribution of neuronal migration dysregulation to anesthesia-induced neurotoxicity in the fetal brain. Pregnant C57BL/6 mice at embryonic day 14.5 received 2.5% sevoflurane daily for two days. Cortical neuron migration and axon lengths were evaluated using GFP immunostaining. Morris water maze tests were performed to assess the effects of sevoflurane exposure on spatial memory in offspring. We found that sevoflurane exposure decreased axon length and caused cognitive defects in young mice. RNA sequencing revealed that these defects were associated with reduced neuro-oncological ventral antigen 2 (Nova2) expression. In utero electroporation experiments using Nova2 shRNA recapitulated this finding. Nova2 shRNA inhibited neuronal migration and decreased axon lengths. Finally, we found that Netrin-1/Deleted in Colorectal Cancer (Dcc) proteins acted downstream of Nova2 to suppresses neuronal migration. These findings describe a novel mechanism by which prenatal anesthesia exposure affects embryonic neural development and postnatal behavior.
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Affiliation(s)
- Dongdong Chai
- Department of Anesthesiology and Critical Care Medicine, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jia Yan
- Department of Anesthesiology and Critical Care Medicine, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chunzhu Li
- Department of Anesthesiology and Critical Care Medicine, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yu Sun
- Department of Anesthesiology and Critical Care Medicine, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hong Jiang
- Department of Anesthesiology and Critical Care Medicine, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
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22
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Li K, Zhu X, Chen X, Wang X. MicroRNA‑27a‑3p promotes epithelial‑mesenchymal transition by targeting NOVA alternative splicing regulator 1 in gastric cancer. Mol Med Rep 2020; 21:1615-1622. [PMID: 32016460 DOI: 10.3892/mmr.2020.10949] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 06/22/2019] [Indexed: 11/05/2022] Open
Abstract
NOVA alternative splicing regulator 1 (NOVA1) dysregulation has been detected in the gastric cancer microenvironment. Decreased NOVA1 expression has been linked to the progression and poor prognosis of gastric cancer; however, the role of NOVA1 in regulating epithelial‑mesenchymal transition (EMT) remains unclear in this disease. Experimental evidence has shown that miR‑27a‑3p is a potential oncogene in gastric cancer. In the present study, we observed that miR‑27a‑3p expression was increased in gastric cancer and was inversely associated with overall survival. Overexpression of miR‑27a‑3p promoted EMT in AGS gastric cancer cells. Additionally, overexpression of miR‑27a‑3p inhibited NOVA1 expression, while silencing of NOVA1 promoted EMT in AGS cells. A total of 108 gastric cancer samples were examined for NOVA1 expression by immunohistochemistry. Decreased NOVA1 expression was linked to lymph node metastasis, tumor‑node‑metastasis stage and shorter overall survival. Therefore, these results indicated that NOVA1 could be a potential tumor suppressive gene and that miR‑27a‑3p promotes EMT by targeting NOVA1 in gastric cancer.
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Affiliation(s)
- Kai Li
- Department of Gastrointestinal Surgery II, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Xiangrong Zhu
- Department of General Surgery, Cixi People's Hospital, Cixi, Zhejiang 315300, P.R. China
| | - Xihua Chen
- Department of General Surgery, Cixi People's Hospital, Cixi, Zhejiang 315300, P.R. China
| | - Xiongtie Wang
- Department of General Surgery, Cixi People's Hospital, Cixi, Zhejiang 315300, P.R. China
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23
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Dubes S, Favereaux A, Thoumine O, Letellier M. miRNA-Dependent Control of Homeostatic Plasticity in Neurons. Front Cell Neurosci 2019; 13:536. [PMID: 31866828 PMCID: PMC6906196 DOI: 10.3389/fncel.2019.00536] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 11/19/2019] [Indexed: 11/13/2022] Open
Abstract
Homeostatic plasticity is a form of plasticity in which neurons compensate for changes in neuronal activity through the control of key physiological parameters such as the number and the strength of their synaptic inputs and intrinsic excitability. Recent studies revealed that miRNAs, which are small non-coding RNAs repressing mRNA translation, participate in this process by controlling the translation of multiple effectors such as glutamate transporters, receptors, signaling molecules and voltage-gated ion channels. In this review, we present and discuss the role of miRNAs in both cell-wide and compartmentalized forms of homeostatic plasticity as well as their implication in pathological processes associated with homeostatic failure.
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Affiliation(s)
- Sandra Dubes
- University of Bordeaux, Interdisciplinary Institute for Neuroscience, UMR 5297, Bordeaux, France.,CNRS, Interdisciplinary Institute for Neuroscience, UMR 5297, Bordeaux, France
| | - Alexandre Favereaux
- University of Bordeaux, Interdisciplinary Institute for Neuroscience, UMR 5297, Bordeaux, France.,CNRS, Interdisciplinary Institute for Neuroscience, UMR 5297, Bordeaux, France
| | - Olivier Thoumine
- University of Bordeaux, Interdisciplinary Institute for Neuroscience, UMR 5297, Bordeaux, France.,CNRS, Interdisciplinary Institute for Neuroscience, UMR 5297, Bordeaux, France
| | - Mathieu Letellier
- University of Bordeaux, Interdisciplinary Institute for Neuroscience, UMR 5297, Bordeaux, France.,CNRS, Interdisciplinary Institute for Neuroscience, UMR 5297, Bordeaux, France
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24
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Wang K, Zhao XH, Liu J, Zhang R, Li JP. Nervous system and gastric cancer. Biochim Biophys Acta Rev Cancer 2019; 1873:188313. [PMID: 31647986 DOI: 10.1016/j.bbcan.2019.188313] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 09/04/2019] [Accepted: 09/05/2019] [Indexed: 02/07/2023]
Abstract
The nervous system has been recently shown to exert impact on gastric cancer directly and indirectly. Gastric cancer cells invade nerve fibers to induce outgrowth and branching of neural cells, and nerve fibers in turn infiltrate into tumor microenvironment to promote progression of gastric cancer. Additionally, the neuro-immune interaction also plays an important role in gastric cancer development. The interplay of nerves and gastric cancer is mediated by many nervous system-associated factors, which can not only be synthesized and released by both cancer cells and nerve terminals, but also participate in regulation of many aspects of gastric cancer such as cell proliferation, angiogenesis, metastasis and recurrence. Furthermore, clinical researches indicate that some of these factors are significant diagnosis and prognosis biomarkers for gastric cancer. Herein, we reviewed recent advances and future prospects of the interaction between nervous system and gastric cancer.
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Affiliation(s)
- Ke Wang
- State key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, 710032 Xi'an, China; State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, China
| | - Xin-Hui Zhao
- State key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, 710032 Xi'an, China; State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, China
| | - Jun Liu
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, China
| | - Rui Zhang
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, China; State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, China.
| | - Ji-Peng Li
- State key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, 710032 Xi'an, China; Department of Experimental Surgery, Xijing Hospital, Fourth Military Medical University, 710032 Xi'an, China.
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25
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The nuclear matrix protein Matr3 regulates processing of the synaptic microRNA-138-5p. Neurobiol Learn Mem 2019; 159:36-45. [PMID: 30790622 DOI: 10.1016/j.nlm.2019.02.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 01/16/2019] [Accepted: 02/17/2019] [Indexed: 12/14/2022]
Abstract
microRNA-dependent post-transcriptional control represents an important gene-regulatory layer in post-mitotic neuronal development and synaptic plasticity. We recently identified the brain-enriched miR-138 as a negative regulator of dendritic spine morphogenesis in rat hippocampal neurons. A potential involvement of miR-138 in cognition is further supported by a recent GWAS study on memory performance in a cohort of aged (>60 years) individuals. The expression of miR-138, which is encoded in two independent genomic loci (miR-138-1 and -2), is subject to both cell-type and developmental stage-specific regulation, the underlying molecular mechanisms however are poorly understood. Here, we show that miR-138-2 is the primary source of mature miR-138 in developing rat hippocampal neurons. Furthermore, we obtained evidence for the regulation of miR-138-2 biogenesis at the level of primary miRNA processing. Using biochemical pull-down assays, we identified the nuclear matrix protein Matrin-3 as pri/pre-miR-138 interacting protein and mapped the interaction to the pri/pre-miR-138-2 loop region. Matrin-3 loss-of-function experiments in HEK293 cells and primary neurons together with protein localization studies suggest an inhibitory function of Matrin-3 in nuclear pri-miR-138-2 processing. Together, our experiments unravel a new mechanism of miR-138 regulation in neurons, with important implications for miR-138 regulation during neuronal development, synaptic plasticity and memory-related processes.
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26
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Dick ALW, Khermesh K, Paul E, Stamp F, Levanon EY, Chen A. Adenosine-to-Inosine RNA Editing Within Corticolimbic Brain Regions Is Regulated in Response to Chronic Social Defeat Stress in Mice. Front Psychiatry 2019; 10:277. [PMID: 31133890 PMCID: PMC6512728 DOI: 10.3389/fpsyt.2019.00277] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Accepted: 04/10/2019] [Indexed: 11/13/2022] Open
Abstract
Adenosine-to-inosine (A-to-I) RNA editing is a co-/posttranscriptional modification of double-stranded RNA, catalyzed by the adenosine deaminase acting on RNA (ADAR) family of enzymes, which results in recognition of inosine as guanosine by translational and splicing machinery causing potential recoding events in amino acid sequences. A-to-I editing is prominent within brain-specific transcripts, and dysregulation of editing at several well-studied loci (e.g., Gria2, Htr2c) has been implicated in acute and chronic stress in rodents as well as neurological (e.g., Alzheimer's) and psychopathological disorders such as schizophrenia and major depressive disorder. However, only a small fraction of recoding sites has been investigated within the brain following stress, and our understanding of the role of RNA editing in transcriptome regulation following environmental stimuli remains poorly understood. Thus, we aimed to investigate A-to-I editing at hundreds of loci following chronic social defeat stress (CSDS) in mice within corticolimbic regions responsive to chronic stress regulation. Adult male mice were subjected to CSDS or control conditions for 21 days and dynamic regulation of A-to-I editing was investigated 2 and 8 days following the final defeat within both the medial prefrontal cortex (mPFC) and basolateral amygdala (BLA). Employing a targeted resequencing approach, which utilizes microfluidics-based multiplex polymerase chain reaction (PCR) coupled with next-generation sequencing, we analyzed A-to-I editing at ∼100 high-confidence editing sites within the mouse brain. CSDS resulted in acute regulation of transcripts encoding several ADAR enzymes, which normalized 8 days following the final defeat and was specific for susceptible mice. In contrast, sequencing analysis revealed modest and dynamic regulation of A-to-I editing within numerous transcripts in both the mPFC and BLA of resilient and susceptible mice at both 2 and 8 days following CSDS with minimal overlap between regions and time points. Editing within the Htr2c transcript and relative abundance of Htr2c messenger RNA (mRNA)variants were also observed within the BLA of susceptible mice 2 days following CSDS. These results indicate dynamic RNA editing within discrete brain regions following CSDS in mice, further implicating A-to-I editing as a stress-sensitive molecular mechanism within the brain of potential relevance to resiliency and susceptibility to CSDS.
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Affiliation(s)
- Alec L W Dick
- Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
| | | | - Evan Paul
- Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
| | - Fabian Stamp
- Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
| | - Erez Y Levanon
- The Mina and Everard Goodman Faculty of LifeSciences, Bar-Ilan University, Ramat-Gan, Israel
| | - Alon Chen
- Department of Stress Neurobiology and Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany.,Department of Neurobiology, Weizmann Institute of Science, Rehovot, Israel
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27
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Rajgor D, Sanderson TM, Amici M, Collingridge GL, Hanley JG. NMDAR-dependent Argonaute 2 phosphorylation regulates miRNA activity and dendritic spine plasticity. EMBO J 2018; 37:e97943. [PMID: 29712715 PMCID: PMC5983126 DOI: 10.15252/embj.201797943] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 03/27/2018] [Accepted: 03/29/2018] [Indexed: 12/12/2022] Open
Abstract
MicroRNAs (miRNAs) repress translation of target mRNAs by associating with Argonaute (Ago) proteins to form the RNA-induced silencing complex (RISC), underpinning a powerful mechanism for fine-tuning protein expression. Specific miRNAs are required for NMDA receptor (NMDAR)-dependent synaptic plasticity by modulating the translation of proteins involved in dendritic spine morphogenesis or synaptic transmission. However, it is unknown how NMDAR stimulation stimulates RISC activity to rapidly repress translation of synaptic proteins. We show that NMDAR stimulation transiently increases Akt-dependent phosphorylation of Ago2 at S387, which causes an increase in binding to GW182 and a rapid increase in translational repression of LIMK1 via miR-134. Furthermore, NMDAR-dependent down-regulation of endogenous LIMK1 translation in dendrites and dendritic spine shrinkage requires phospho-regulation of Ago2 at S387. AMPAR trafficking and hippocampal LTD do not involve S387 phosphorylation, defining this mechanism as a specific pathway for structural plasticity. This work defines a novel mechanism for the rapid transduction of NMDAR stimulation into miRNA-mediated translational repression to control dendritic spine morphology.
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Affiliation(s)
- Dipen Rajgor
- Centre for Synaptic Plasticity and School of Biochemistry, University of Bristol, Bristol, UK
| | - Thomas M Sanderson
- Centre for Synaptic Plasticity and School of Physiology, Pharmacology & Neuroscience, University of Bristol, Bristol, UK
| | - Mascia Amici
- Centre for Synaptic Plasticity and School of Physiology, Pharmacology & Neuroscience, University of Bristol, Bristol, UK
| | - Graham L Collingridge
- Centre for Synaptic Plasticity and School of Physiology, Pharmacology & Neuroscience, University of Bristol, Bristol, UK
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
| | - Jonathan G Hanley
- Centre for Synaptic Plasticity and School of Biochemistry, University of Bristol, Bristol, UK
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28
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Li C, He Y, Ma H, Han S. NOVA1 acts as an oncogene in osteosarcoma. Am J Transl Res 2017; 9:4450-4457. [PMID: 29118907 PMCID: PMC5666054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 04/10/2017] [Indexed: 06/07/2023]
Abstract
Osteosarcoma is one of the most common bone tumors in young patients. NOVA1 (neuro-oncological ventral antigen 1) is a neuron-specific RNA binding-protein and belongs to the Nova family. Previous studies showed that NOVA1 played crucial roles in the development of several tumors. The objective of our study was to study the role of NOVA1 in the osteosarcoma. In our study, we showed that NOVA1 expression was upregulated in osteosarcoma cell lines and tissues. The expression of NOVA1 was upregulated in 22 (22/30; 73%) osteosarcoma cases compared to that in the adjacent tissues. Overexpression of NOVA1 promoted osteosarcoma cell viability, colony formation and invasion. Furthermore, knockdown of NOVA1 suppressed osteosarcoma cell viability, colony formation and invasion. These data suggested that NOVA1 acted as an oncogene in the development of osteosarcoma.
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Affiliation(s)
- Chengzhen Li
- Department of Family Medicine, College of Medicine, Dong-A UniversityBusan 604-714, Republic of Korea
- Department of Emergency, Heilongjiang Provincial HospitalHarbin 150000, Heilongjiang, China
| | - Ying He
- Department of Emergency, Heilongjiang Provincial HospitalHarbin 150000, Heilongjiang, China
| | - Haijing Ma
- Department of Emergency, Heilongjiang Provincial HospitalHarbin 150000, Heilongjiang, China
| | - Seongho Han
- Department of Family Medicine, College of Medicine, Dong-A UniversityBusan 604-714, Republic of Korea
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29
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Opening a New Time Window for Treatment of Stroke by Targeting HDAC2. J Neurosci 2017; 37:6712-6728. [PMID: 28592694 DOI: 10.1523/jneurosci.0341-17.2017] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 05/10/2017] [Accepted: 06/01/2017] [Indexed: 11/21/2022] Open
Abstract
Narrow therapeutic window limits treatments with thrombolysis and neuroprotection for most stroke patients. Widening therapeutic window remains a critical challenge. Understanding the key mechanisms underlying the pathophysiological events in the peri-infarct area where secondary injury coexists with neuroplasticity over days to weeks may offer an opportunity for expanding the therapeutic window. Here we show that ischemia-induced histone deacetylase 2 (HDAC2) upregulation from 5 to 7 d after stroke plays a crucial role. In this window phase, suppressing HDAC2 in the peri-infarct cortex of rodents by HDAC inhibitors, knockdown or knock-out of Hdac2 promoted recovery of motor function from stroke via epigenetically enhancing cells survival and neuroplasticity of surviving neurons as well as reducing neuroinflammation, whereas overexpressing HDAC2 worsened stroke-induced functional impairment of both WT and Hdac2 conditional knock-out mice. More importantly, inhibiting other isoforms of HDACs had no effect. Thus, the intervention by precisely targeting HDAC2 in this window phase is a novel strategy for the functional recovery of stroke survivors.SIGNIFICANCE STATEMENT Narrow time window phase impedes current therapies for stroke patients. Understanding the key mechanisms underlying secondary injury may open a new window for pharmacological interventions to promote recovery from stroke. Our study indicates that ischemia-induced histone deacetylase 2 upregulation from 5 to 7 d after stroke mediates the secondary functional loss by reducing survival and neuroplasticity of peri-infarct neurons as well as augmenting neuroinflammation. Thus, precisely targeting histone deacetylase 2 in the window phase provides a novel therapeutic strategy for stroke recovery.
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30
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Rajgor D, Fiuza M, Parkinson GT, Hanley JG. The PICK1 Ca 2+ sensor modulates N-methyl-d-aspartate (NMDA) receptor-dependent microRNA-mediated translational repression in neurons. J Biol Chem 2017; 292:9774-9786. [PMID: 28404816 PMCID: PMC5465499 DOI: 10.1074/jbc.m117.776302] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 03/29/2017] [Indexed: 12/11/2022] Open
Abstract
MicroRNAs (miRNAs) are important regulators of localized mRNA translation in neuronal dendrites. The presence of RNA-induced silencing complex proteins in these compartments and the dynamic miRNA expression changes that occur in response to neuronal stimulation highlight their importance in synaptic plasticity. Previously, we demonstrated a novel interaction between the major RNA-induced silencing complex component Argounaute-2 (Ago2) and the BAR (bin/amphiphysin/rvs) domain protein PICK1. PICK1 recruits Ago2 to recycling endosomes in dendrites, where it inhibits miRNA-mediated translational repression. Chemical induction of long-term depression via NMDA receptor activation causes the dissociation of Ago2 from PICK1 and a consequent increase in dendritic miRNA-mediated gene silencing. The mechanism that underlies the regulation of PICK1-Ago2 binding is unknown. In this study, we demonstrate that the PICK1-Ago2 interaction is directly sensitive to Ca2+ ions so that high [Ca2+]free reduces PICK1 binding to Ago2. Mutating a stretch of C-terminal Ca2+-binding residues in PICK1 results in a complete block of NMDA-induced PICK1-Ago2 disassociation in cortical neurons. Furthermore, the same mutant also blocks NMDA-stimulated miRNA-mediated gene silencing. This study defines a novel mechanism whereby elevated [Ca2+] induced by NMDA receptor activation modulates Ago2 and miRNA activity via PICK1. Our work suggests a Ca2+-dependent process to regulate miRNA activity in neurons in response to the induction of long-term depression.
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Affiliation(s)
- Dipen Rajgor
- From the School of Biochemistry and the Centre for Synaptic Plasticity, University of Bristol, Bristol BS8 1TD, United Kingdom
| | - Maria Fiuza
- From the School of Biochemistry and the Centre for Synaptic Plasticity, University of Bristol, Bristol BS8 1TD, United Kingdom
| | - Gabrielle T Parkinson
- From the School of Biochemistry and the Centre for Synaptic Plasticity, University of Bristol, Bristol BS8 1TD, United Kingdom
| | - Jonathan G Hanley
- From the School of Biochemistry and the Centre for Synaptic Plasticity, University of Bristol, Bristol BS8 1TD, United Kingdom
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31
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Xin Y, Li Z, Zheng H, Ho J, Chan MTV, Wu WKK. Neuro-oncological ventral antigen 1 (NOVA1): Implications in neurological diseases and cancers. Cell Prolif 2017; 50. [PMID: 28394091 DOI: 10.1111/cpr.12348] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 02/27/2017] [Indexed: 12/25/2022] Open
Abstract
Neuro-oncological ventral antigen 1 (NOVA1) is a RNA-binding protein that interacts with RNA containing repeats of the YCAY sequence. This protein is a brain-specific splicing factor regulating neuronal alternative splicing. It has been increasingly recognized as an important contributor to neurological disorders and carcinogenesis. In this review, we summarize the biological functions and pathological roles of NOVA1. The clinical implications of NOVA1 will also be discussed.
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Affiliation(s)
- Yu Xin
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100042, China
| | - Zheng Li
- Department of Orthopedics Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100042, China
| | - Heyi Zheng
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100042, China
| | - Jeffery Ho
- Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong
| | - Matthew T V Chan
- Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong
| | - William K K Wu
- Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong.,State Key Laboratory of Digestive Disease and LKS Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong
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32
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Hu Z, Li Z. miRNAs in synapse development and synaptic plasticity. Curr Opin Neurobiol 2017; 45:24-31. [PMID: 28334640 DOI: 10.1016/j.conb.2017.02.014] [Citation(s) in RCA: 111] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2016] [Revised: 02/23/2017] [Accepted: 02/26/2017] [Indexed: 01/21/2023]
Abstract
Synapses are functional units of the nervous system, through which information is transferred between neurons. The development and activity-dependent modification of synapses require temporally and spatially controlled modulation of gene expression. microRNAs (miRNAs) have emerged as essential regulators of gene expression. They are small non-coding RNAs that regulate mRNA stability and translation by interacting with the 3' untranslated region (3' UTR) of mRNAs. miRNAs are located to neuronal processes to regulate protein synthesis locally and their expression is regulated by synaptic activity. This article reviews recent findings on the role of miRNAs in synapse development and synaptic plasticity.
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Affiliation(s)
- Zhonghua Hu
- Section on Synapse Development and Plasticity, National Institute of Mental Health, National Institutes of Health, United States; Lieber Institute for Brain Development, Johns Hopkins University Medical Campus, United States
| | - Zheng Li
- Section on Synapse Development and Plasticity, National Institute of Mental Health, National Institutes of Health, United States.
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33
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Vernia S, Edwards YJ, Han MS, Cavanagh-Kyros J, Barrett T, Kim JK, Davis RJ. An alternative splicing program promotes adipose tissue thermogenesis. eLife 2016; 5. [PMID: 27635635 PMCID: PMC5026472 DOI: 10.7554/elife.17672] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 08/14/2016] [Indexed: 01/11/2023] Open
Abstract
Alternative pre-mRNA splicing expands the complexity of the transcriptome and controls isoform-specific gene expression. Whether alternative splicing contributes to metabolic regulation is largely unknown. Here we investigated the contribution of alternative splicing to the development of diet-induced obesity. We found that obesity-induced changes in adipocyte gene expression include alternative pre-mRNA splicing. Bioinformatics analysis associated part of this alternative splicing program with sequence specific NOVA splicing factors. This conclusion was confirmed by studies of mice with NOVA deficiency in adipocytes. Phenotypic analysis of the NOVA-deficient mice demonstrated increased adipose tissue thermogenesis and improved glycemia. We show that NOVA proteins mediate a splicing program that suppresses adipose tissue thermogenesis. Together, these data provide quantitative analysis of gene expression at exon-level resolution in obesity and identify a novel mechanism that contributes to the regulation of adipose tissue function and the maintenance of normal glycemia. DOI:http://dx.doi.org/10.7554/eLife.17672.001 The process of building a protein from the information encoded in a gene begins when the gene is copied to form a pre-messenger RNA molecule. This molecule is then edited to produce a final messenger RNA that is “translated” to form the protein. Different segments of the pre-messenger RNA molecule can be removed to create different messenger RNAs. This “alternative splicing” enables a single gene to produce multiple protein variants, allowing a diverse range of processes to be performed by cells. Fat cells store energy in the form of fats and can release this energy as heat in a process called thermogenesis. This helps to regulate the body’s metabolism and prevent obesity. Vernia et al. now find that that feeding mice a high-fat diet causes widespread changes in alternative splicing in fat cells. Further bioinformatics analysis revealed that the NOVA family of splicing factors – proteins that bind to the pre-messenger RNAs to control alternative splicing – contribute to the alternative splicing of around a quarter of the genes whose splicing changes in response to a fatty diet. Mice whose fat cells were deficient in the NOVA splicing factors displayed increased thermogenesis. As a consequence, when these animals were fed a high-fat diet, they gained less weight than animals in which NOVA proteins were present. Their metabolic activity was also better, meaning they were less likely to show the symptoms of pre-diabetes. Moreover, the activity of certain genes that are known to promote thermogenesis was greater in the fat cells that were deficient in NOVA proteins. Overall, the results presented by Vernia et al. suggest that the normal role of NOVA proteins is to carry out an alternative splicing program that suppresses thermogenesis, which in turn may promote obesity. Drugs that are designed to target NOVA proteins and increase thermogenesis may therefore help to treat metabolic diseases and obesity. The next step is to identify the protein variants that are generated by NOVA proteins and work out how they contribute to thermogenesis. DOI:http://dx.doi.org/10.7554/eLife.17672.002
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Affiliation(s)
- Santiago Vernia
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, United States
| | - Yvonne Jk Edwards
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, United States
| | - Myoung Sook Han
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, United States
| | - Julie Cavanagh-Kyros
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, United States.,Howard Hughes Medical Institute, Worcester, United States
| | - Tamera Barrett
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, United States.,Howard Hughes Medical Institute, Worcester, United States
| | - Jason K Kim
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, United States
| | - Roger J Davis
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, United States.,Howard Hughes Medical Institute, Worcester, United States
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Fryssira H, Tsoutsou E, Psoni S, Amenta S, Liehr T, Anastasakis E, Skentou C, Ntouflia A, Papoulidis I, Manolakos E, Chaliasos N. Partial monosomy14q involving FOXG1 and NOVA1 in an infant with microcephaly, seizures and severe developmental delay. Mol Cytogenet 2016; 9:55. [PMID: 27486480 PMCID: PMC4970234 DOI: 10.1186/s13039-016-0269-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 07/25/2016] [Indexed: 11/24/2022] Open
Abstract
Background FOXG1 gene mutations have been associated with the congenital variant of Rett syndrome (RTT) since the initial description of two patients in 2008. The on-going accumulation of clinical data suggests that the FOXG1-variant of RTT forms a distinguishable phenotype, consisting mainly of postnatal microcephaly, seizures, hypotonia, developmental delay and corpus callosum agenesis. Case presentation We report a 6-month-old female infant, born at 38 weeks of gestation after in vitro fertilization, who presented with feeding difficulties, irritability and developmental delay from the first months of life. Microcephaly with bitemporal narrowing, dyspraxia, poor eye contact and strabismus were also noted. At 10 months, the proband exhibited focal seizures and required valproic acid treatment. Array-Comparative Genomic Hybridization revealed a 4.09 Mb deletion in 14q12 region, encompassing the FOXG1 and NOVA1 genes. The proband presented similar feature with patients with 14q12 deletions except for dysgenesis of corpus callosum. Disruption of the NOVA1 gene which promotes the motor neurons apoptosis has not yet been linked to any human phenotypes and it is uncertain if it affects our patient’s phenotype. Conclusions Since our patient is the first reported case with deletion of both genes (FOXG1-NOVA1), thorough clinical follow up would further delineate the Congenital Rett-Variant phenotypes.
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Affiliation(s)
- H Fryssira
- Medical genetics, School of Medicine, National and Kapodistrian University of Athens, "Aghia Sophia" Children's Hospital, Athens, Greece
| | - E Tsoutsou
- Medical genetics, School of Medicine, National and Kapodistrian University of Athens, "Aghia Sophia" Children's Hospital, Athens, Greece
| | - S Psoni
- Medical genetics, School of Medicine, National and Kapodistrian University of Athens, "Aghia Sophia" Children's Hospital, Athens, Greece
| | - S Amenta
- "Mitera" Maternity Hospital, Athens, Greece
| | - T Liehr
- Institute of Human Genetics, Jena University Hospital, Friedrich Schiller University, Jena, Germany
| | - E Anastasakis
- Hellenic Navy Hospital, Deinokratous 70, Athens, 11521 Greece
| | - Ch Skentou
- "Mitera kai emvrio" Medical centre, Larisa, Greece
| | - A Ntouflia
- "Access to Genome" Clinical Laboratory Genetics, Athens Thessaloniki, Greece
| | - I Papoulidis
- "Access to Genome" Clinical Laboratory Genetics, Athens Thessaloniki, Greece
| | - E Manolakos
- "Access to Genome" Clinical Laboratory Genetics, Athens Thessaloniki, Greece ; Department of Medical Genetics, Binaghi Hospital, University of Cagliari, Cagliari, Italy
| | - N Chaliasos
- Child Health Department, University Hospital of Ioannina (UHI), Ioannina, Greece
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El Fatimy R, Davidovic L, Tremblay S, Jaglin X, Dury A, Robert C, De Koninck P, Khandjian EW. Tracking the Fragile X Mental Retardation Protein in a Highly Ordered Neuronal RiboNucleoParticles Population: A Link between Stalled Polyribosomes and RNA Granules. PLoS Genet 2016; 12:e1006192. [PMID: 27462983 PMCID: PMC4963131 DOI: 10.1371/journal.pgen.1006192] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 06/22/2016] [Indexed: 11/30/2022] Open
Abstract
Local translation at the synapse plays key roles in neuron development and activity-dependent synaptic plasticity. mRNAs are translocated from the neuronal soma to the distant synapses as compacted ribonucleoparticles referred to as RNA granules. These contain many RNA-binding proteins, including the Fragile X Mental Retardation Protein (FMRP), the absence of which results in Fragile X Syndrome, the most common inherited form of intellectual disability and the leading genetic cause of autism. Using FMRP as a tracer, we purified a specific population of RNA granules from mouse brain homogenates. Protein composition analyses revealed a strong relationship between polyribosomes and RNA granules. However, the latter have distinct architectural and structural properties, since they are detected as close compact structures as observed by electron microscopy, and converging evidence point to the possibility that these structures emerge from stalled polyribosomes. Time-lapse video microscopy indicated that single granules merge to form cargoes that are transported from the soma to distal locations. Transcriptomic analyses showed that a subset of mRNAs involved in cytoskeleton remodelling and neural development is selectively enriched in RNA granules. One third of the putative mRNA targets described for FMRP appear to be transported in granules and FMRP is more abundant in granules than in polyribosomes. This observation supports a primary role for FMRP in granules biology. Our findings open new avenues for the study of RNA granule dysfunctions in animal models of nervous system disorders, such as Fragile X syndrome. Fragile X syndrome is the most common form of inherited mental retardation affecting approximately 1 female out of 7000 and 1 male out of 4000 worldwide. The syndrome is due to the silencing of a single gene, the Fragile Mental Retardation 1 (FMR1), that codes for the Fragile X mental retardation protein (FMRP). This protein is highly expressed in brain and controls local protein synthesis essential for neuronal development and maturation as well as the formation of neural circuits. Several studies suggest a role for FMRP in the regulation of mRNA transport along axons and dendrites to distant synaptic locations in structures called RNA granules. Here we report the isolation of a particular subpopulation of these structures and the analysis of their architecture and composition in terms of RNA and protein. Also, using time-lapse video microscopy, we monitored granule transport and fusion throughout neuronal processes. These findings open new avenues for the study of RNA transport dysfunctions in animal models of nervous system disorders.
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Affiliation(s)
- Rachid El Fatimy
- Institut universitaire en santé mentale de Québec, Quebec, Canada
- Département de Psychiatrie et de Neurosciences, Faculté de Médecine, Université Laval, Québec, Quebec, Canada
| | - Laetitia Davidovic
- Institut de Pharmacologie Moléculaire et Cellulaire, UMR7275, Université de Nice-Sophia Antipolis, F-06560 Valbonne, France
| | - Sandra Tremblay
- Institut universitaire en santé mentale de Québec, Quebec, Canada
| | - Xavier Jaglin
- Neuroscience Institute, Department of Neuroscience and Physiology, New York University, New York, New York, United States of America
| | - Alain Dury
- Institut universitaire en santé mentale de Québec, Quebec, Canada
- Département de Psychiatrie et de Neurosciences, Faculté de Médecine, Université Laval, Québec, Quebec, Canada
| | - Claude Robert
- Centre de recherche en biologie de la reproduction, Département des sciences animales, Faculté des sciences de l’agriculture et de l’alimentation, Université Laval, Québec, Quebec, Canada
| | - Paul De Koninck
- Institut universitaire en santé mentale de Québec, Quebec, Canada
- Département de Biochimie, Microbiologie et Bio-Informatique, Université Laval, Québec, Quebec, Canada
| | - Edouard W. Khandjian
- Institut universitaire en santé mentale de Québec, Quebec, Canada
- Département de Psychiatrie et de Neurosciences, Faculté de Médecine, Université Laval, Québec, Quebec, Canada
- * E-mail:
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Hervé M, Ibrahim EC. MicroRNA screening identifies a link between NOVA1 expression and a low level of IKAP in familial dysautonomia. Dis Model Mech 2016; 9:899-909. [PMID: 27483351 PMCID: PMC5007982 DOI: 10.1242/dmm.025841] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 06/22/2016] [Indexed: 12/20/2022] Open
Abstract
Familial dysautonomia (FD) is a rare neurodegenerative disease caused by a mutation in intron 20 of the IKBKAP gene (c.2204+6T>C), leading to tissue-specific skipping of exon 20 and a decrease in the synthesis of the encoded protein IKAP (also known as ELP1). Small non-coding RNAs known as microRNAs (miRNAs) are important post-transcriptional regulators of gene expression and play an essential role in the nervous system development and function. To better understand the neuronal specificity of IKAP loss, we examined expression of miRNAs in human olfactory ecto-mesenchymal stem cells (hOE-MSCs) from five control individuals and five FD patients. We profiled the expression of 373 miRNAs using microfluidics and reverse transcription coupled to quantitative PCR (RT-qPCR) on two biological replicate series of hOE-MSC cultures from healthy controls and FD patients. This led to the total identification of 26 dysregulated miRNAs in FD, validating the existence of a miRNA signature in FD. We then selected the nine most discriminant miRNAs for further analysis. The signaling pathways affected by these dysregulated miRNAs were largely within the nervous system. In addition, many targets of these dysregulated miRNAs had been previously demonstrated to be affected in FD models. Moreover, we found that four of our nine candidate miRNAs target the neuron-specific splicing factor NOVA1. We demonstrated that overexpression of miR-203a-3p leads to a decrease of NOVA1, counter-balanced by an increase of IKAP, supporting a potential interaction between NOVA1 and IKAP. Taken together, these results reinforce the choice of miRNAs as potential therapeutic targets and suggest that NOVA1 could be a regulator of FD pathophysiology. Summary: A miRNA screening conducted in olfactory stem cells from patients links the neuron-specific splicing factor NOVA1 to neurodegeneration in familial dysautonomia.
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Affiliation(s)
- Mylène Hervé
- CRN2M-UMR7286, Aix-Marseille Université, CNRS, Faculté de Médecine Nord, Marseille 13344, Cedex 15, France
| | - El Chérif Ibrahim
- CRN2M-UMR7286, Aix-Marseille Université, CNRS, Faculté de Médecine Nord, Marseille 13344, Cedex 15, France
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Perez JD, Rubinstein ND, Dulac C. New Perspectives on Genomic Imprinting, an Essential and Multifaceted Mode of Epigenetic Control in the Developing and Adult Brain. Annu Rev Neurosci 2016; 39:347-84. [PMID: 27145912 DOI: 10.1146/annurev-neuro-061010-113708] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Mammalian evolution entailed multiple innovations in gene regulation, including the emergence of genomic imprinting, an epigenetic regulation leading to the preferential expression of a gene from its maternal or paternal allele. Genomic imprinting is highly prevalent in the brain, yet, until recently, its central roles in neural processes have not been fully appreciated. Here, we provide a comprehensive survey of adult and developmental brain functions influenced by imprinted genes, from neural development and wiring to synaptic function and plasticity, energy balance, social behaviors, emotions, and cognition. We further review the widespread identification of parental biases alongside monoallelic expression in brain tissues, discuss their potential roles in dosage regulation of key neural pathways, and suggest possible mechanisms underlying the dynamic regulation of imprinting in the brain. This review should help provide a better understanding of the significance of genomic imprinting in the normal and pathological brain of mammals including humans.
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Affiliation(s)
- Julio D Perez
- Department of Molecular and Cellular Biology, Harvard University, Howard Hughes Medical Institute, Cambridge, Massachusetts 02138;
| | - Nimrod D Rubinstein
- Department of Molecular and Cellular Biology, Harvard University, Howard Hughes Medical Institute, Cambridge, Massachusetts 02138;
| | - Catherine Dulac
- Department of Molecular and Cellular Biology, Harvard University, Howard Hughes Medical Institute, Cambridge, Massachusetts 02138;
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Lai KP, Li JW, Tse ACK, Wang SY, Chan TF, Wu RSS. Differential responses of female and male brains to hypoxia in the marine medaka Oryzias melastigma. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2016; 172:36-43. [PMID: 26765084 DOI: 10.1016/j.aquatox.2015.12.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 12/23/2015] [Accepted: 12/24/2015] [Indexed: 05/26/2023]
Abstract
Hypoxia, an endocrine disruptor, affects synthesis and balance of sex steroid hormones, leading to reproductive impairment in both female and male fish. Cumulating reports demonstrated the alternation of hypothalamus-pituitary-gonad axis (HPG-axis) by hypoxia. However, the detail mechanism underlying how hypoxia may alter other brain functions remains largely unknown. In this report, we used marine medaka as a model and conducted a high-throughput RNA sequencing followed by bioinformatics analysis on hypoxia-exposed brain tissues, aiming to determine the change of transcriptional signature and to unravel the pathways that are induced by hypoxia. We found that hypoxia lead to dysregulation of brain functions (including synaptic transmission, axon guidance, potassium ion transport, neuron differentiation, and development of brain and pituitary gland), and also signaling pathways (e.g., gap junction, calcium signaling pathway, and GnRH signaling pathway). Our results further demonstrate gender-specific responses to hypoxia in female and male fish's brains, which provides novel insights into the mechanism underlying the hypoxia induced sex specific brain functions impairments.
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Affiliation(s)
- Keng-Po Lai
- School of Biological Sciences, The University of Hong Kong, Hong Kong SAR, China; State Key Laboratory in Marine Pollution, Hong Kong SAR, China.
| | - Jing-Woei Li
- School of Life Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China; State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong SAR, China.
| | - Anna Chung-Kwan Tse
- School of Biological Sciences, The University of Hong Kong, Hong Kong SAR, China; State Key Laboratory in Marine Pollution, Hong Kong SAR, China.
| | - Simon Yuan Wang
- School of Biological Sciences, The University of Hong Kong, Hong Kong SAR, China; State Key Laboratory in Marine Pollution, Hong Kong SAR, China.
| | - Ting-Fung Chan
- School of Life Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China; State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong SAR, China.
| | - Rudolf Shiu-Sun Wu
- School of Biological Sciences, The University of Hong Kong, Hong Kong SAR, China; State Key Laboratory in Marine Pollution, Hong Kong SAR, China.
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Boese AS, Saba R, Campbell K, Majer A, Medina S, Burton L, Booth TF, Chong P, Westmacott G, Dutta SM, Saba JA, Booth SA. MicroRNA abundance is altered in synaptoneurosomes during prion disease. Mol Cell Neurosci 2015; 71:13-24. [PMID: 26658803 DOI: 10.1016/j.mcn.2015.12.001] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Revised: 10/27/2015] [Accepted: 12/01/2015] [Indexed: 12/15/2022] Open
Abstract
Discrepancy in synaptic structural plasticity is one of the earliest manifestations of the neurodegenerative state. In prion diseases, a reduction in synapses and dendritic spine densities is observed during preclinical disease in neurons of the cortex and hippocampus. The underlying molecular mechanisms of these alterations have not been identified but microRNAs (miRNAs), many of which are enriched at the synapse, likely regulate local protein synthesis in rapid response to stressors such as replicating prions. MiRNAs are therefore candidate regulators of these early neurodegenerative changes and may provide clues as to the molecular pathways involved. We therefore determined changes in mature miRNA abundance within synaptoneurosomes isolated from prion-infected, as compared to mock-infected animals, at asymptomatic and symptomatic stages of disease. During preclinical disease, miRNAs that are enriched in neurons including miR-124a-3p, miR-136-5p and miR-376a-3p were elevated. At later stages of disease we found increases in miRNAs that have previously been identified as deregulated in brain tissues of prion infected mice, as well as in Alzheimer's disease (AD) models. These include miR-146a-5p, miR-142-3p, miR-143-3p, miR-145a-5p, miR-451a, miR-let-7b, miR-320 and miR-150-5p. A number of miRNAs also decreased in abundance during clinical disease. These included almost all members of the related miR-200 family (miR-200a-3p, miR-200b-3p, miR-200c-3p, miR-141-3p, and miR-429-3p) and the 182 cluster (miR-182-5p and miR-183-5p).
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Affiliation(s)
- Amrit S Boese
- Molecular PathoBiology, Public Health Agency of Canada, National Microbiology Laboratory, 1015 Arlington St., Winnipeg, MB R3E 3R2, Canada; Department of Medical Microbiology and Infectious Diseases, Faculty of Health Sciences, University of Manitoba, 730 William Ave., Winnipeg, MB R3E 0W3, Canada
| | - Reuben Saba
- Molecular PathoBiology, Public Health Agency of Canada, National Microbiology Laboratory, 1015 Arlington St., Winnipeg, MB R3E 3R2, Canada
| | - Kristyn Campbell
- Molecular PathoBiology, Public Health Agency of Canada, National Microbiology Laboratory, 1015 Arlington St., Winnipeg, MB R3E 3R2, Canada; Department of Medical Microbiology and Infectious Diseases, Faculty of Health Sciences, University of Manitoba, 730 William Ave., Winnipeg, MB R3E 0W3, Canada
| | - Anna Majer
- Molecular PathoBiology, Public Health Agency of Canada, National Microbiology Laboratory, 1015 Arlington St., Winnipeg, MB R3E 3R2, Canada; Department of Medical Microbiology and Infectious Diseases, Faculty of Health Sciences, University of Manitoba, 730 William Ave., Winnipeg, MB R3E 0W3, Canada
| | - Sarah Medina
- Molecular PathoBiology, Public Health Agency of Canada, National Microbiology Laboratory, 1015 Arlington St., Winnipeg, MB R3E 3R2, Canada
| | - Lynn Burton
- National Centre for Foreign Animal Disease, Canadian Food Inspection Agency, 1015 Arlington St., Winnipeg, MB R3E 3M4, Canada
| | - Timothy F Booth
- Viral Diseases Division, Public Health Agency of Canada, National Microbiology Laboratory, 1015 Arlington St., Winnipeg, MB R3E 3R2, Canada
| | - Patrick Chong
- Mass Spectrometry and Proteomics Core Facility, Public Health Agency of Canada, National Microbiology Laboratory, 1015 Arlington St., Winnipeg, MB R3E 3R2, Canada
| | - Garrett Westmacott
- Mass Spectrometry and Proteomics Core Facility, Public Health Agency of Canada, National Microbiology Laboratory, 1015 Arlington St., Winnipeg, MB R3E 3R2, Canada
| | | | | | - Stephanie A Booth
- Molecular PathoBiology, Public Health Agency of Canada, National Microbiology Laboratory, 1015 Arlington St., Winnipeg, MB R3E 3R2, Canada; Department of Medical Microbiology and Infectious Diseases, Faculty of Health Sciences, University of Manitoba, 730 William Ave., Winnipeg, MB R3E 0W3, Canada.
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40
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Affiliation(s)
- Farahnaz Sananbenesi
- Research Group for Epigenetics in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE), Göttingen, Germany DZNE RNAome Biology, German Center for Neurodegenerative Diseases (DZNE), Göttingen, Germany
| | - Andre Fischer
- Research Group for Epigenetics in Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE), Göttingen, Germany Department of Psychiatry and Psychotherapy, University Medical Center, Göttingen, Germany
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