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Li X, Gao B, Gao B, Li X, Xia X. Transcriptome profiling reveals dysregulation of inflammatory and protein synthesis genes in PCOS. Sci Rep 2024; 14:16596. [PMID: 39025980 PMCID: PMC11258128 DOI: 10.1038/s41598-024-67461-4] [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: 02/26/2024] [Accepted: 07/11/2024] [Indexed: 07/20/2024] Open
Abstract
To analyze the differential expression genes of polycystic ovary syndrome (PCOS), clarify their functions and pathways, as well as the protein-protein interaction network, identify HUB genes, and explore the pathological mechanism. PCOS microarray datasets were screened from the GEO database. Common differentially expressed genes (co-DEGs) were obtained using GEO2R and Venn analysis. Enrichment and pathway analyses were conducted using the DAVID online tool, with results presented in bubble charts. Protein-protein interaction analysis was performed using the STRING tool. HUB genes were identified using Cytoscape software and further interpreted with the assistance of the GeneCards database. A total of two sets of co-DEGs (108 and 102), key proteins (15 and 55), and hub genes (10 and 10) were obtained. The co-DEGs: (1) regulated inflammatory responses and extracellular matrix, TNF, and IL-17 signaling pathways; (2) regulated ribosomes and protein translation, ribosome and immune pathways. The key proteins: (1) regulated inflammation, immunity, transcription, matrix metabolism, proliferation/differentiation, energy, and repair; (2) regulated ubiquitination, enzymes, companion proteins, respiratory chain components, and fusion proteins. The Hub genes: (1) encoded transcription factors and cytokines, playing vital roles in development and proliferation; (2) encoded ribosomes and protein synthesis, influencing hormone and protein synthesis, associated with development and infertility. The dysregulated expression of inflammation and protein synthesis genes in PCOS may be the key mechanism underlying its onset and progression.
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Affiliation(s)
- Xilian Li
- Obstetrics and Gynecology Hospital of Fudan University, Shanghai, 200011, China
| | - Biao Gao
- Teaching and Research Support Center, Naval Medical University, Shanghai, 200433, China.
| | - Bingsi Gao
- Obstetrics and Gynecology Hospital of Fudan University, Shanghai, 200011, China
| | - Xin Li
- Obstetrics and Gynecology Hospital of Fudan University, Shanghai, 200011, China
| | - Xian Xia
- Obstetrics and Gynecology Hospital of Fudan University, Shanghai, 200011, China.
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2
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Yagishita S, Shibata M, Furuno A, Wakatsuki S, Araki T. Neuronal Excitation Induces Tau Protein Dephosphorylation via Protein Phosphatase 1 Activation to Promote Its Binding with Stable Microtubules. Neurol Int 2024; 16:653-662. [PMID: 38921953 PMCID: PMC11206689 DOI: 10.3390/neurolint16030049] [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: 04/29/2024] [Revised: 06/02/2024] [Accepted: 06/04/2024] [Indexed: 06/27/2024] Open
Abstract
The tau protein is a microtubule-associated protein that promotes microtubule stabilization. The phosphorylation of the tau protein has been linked to its dissociation from microtubules. Here, we examined the relationship between neuronal depolarization activity and tau protein phosphorylation by employing model systems in culture as well as in vivo. The KCl-evoked depolarization of cultured neurons has often been used to investigate the effects of neuronal activity. We found dephosphorylation at AT8 sites (S202, T205), T212, AT180 sites (T231, S235), and S396 in KCl-simulated cultured neurons. We also found that the KCl-induced tau protein dephosphorylation increases the level of the tau protein fractionated with stable microtubules. In an in vivo experiment, we demonstrated that the exposure of mice to a new environment activates protein phosphatase 1 in the mouse hippocampus and induces tau protein dephosphorylation. We also found an increased amount of the tau protein in a stable microtubule fraction, suggesting that the dephosphorylation of the tau protein may lead to its increased microtubule association in vivo. These results suggest that the association of microtubules with tau proteins may be regulated by the tau protein phosphorylation status affected by neuronal electrical activity.
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Affiliation(s)
| | | | | | | | - Toshiyuki Araki
- Department of Peripheral Nervous System Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, 4-1-1 Ogawa-Higashi, Tokyo 187-8502, Japan
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Dondi C, Vogler G, Gupta A, Walls SM, Kervadec A, Romero MR, Diop SB, Goode J, Thomas JB, Colas AR, Bodmer R, Montminy M, Ocorr K. The nutrient sensor CRTC & Sarcalumenin / Thinman represent a new pathway in cardiac hypertrophy. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.10.02.560407. [PMID: 37873259 PMCID: PMC10592890 DOI: 10.1101/2023.10.02.560407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
Obesity and type 2 diabetes are at epidemic levels and a significant proportion of these patients are diagnosed with left ventricular hypertrophy. CREB R egulated T ranscription C o-activator ( CRTC ) is a key regulator of metabolism in mammalian hepatocytes, where it is activated by calcineurin (CaN) to increase expression of gluconeogenic genes. CaN is known its role in pathological cardiac hypertrophy, however, a role for CRTC in the heart has not been identified. In Drosophila , CRTC null mutants have little body fat and exhibit severe cardiac restriction, myofibrillar disorganization, cardiac fibrosis and tachycardia, all hallmarks of heart disease. Cardiac-specific knockdown of CRTC , or its coactivator CREBb , mimicked the reduced body fat and heart defects of CRTC null mutants. Comparative gene expression in CRTC loss- or gain-of-function fly hearts revealed contra-regulation of genes involved in glucose, fatty acid, and amino acid metabolism, suggesting that CRTC also acts as a metabolic switch in the heart. Among the contra-regulated genes with conserved CREB binding sites, we identified the fly ortholog of Sarcalumenin, which is a Ca 2+ -binding protein in the sarcoplasmic reticulum. Cardiac knockdown recapitulated the loss of CRTC cardiac restriction and fibrotic phenotypes, suggesting it is a downstream effector of CRTC we named thinman ( tmn ). Importantly, cardiac overexpression of either CaN or CRTC in flies caused hypertrophy that was reversed in a CRTC mutant background, suggesting CRTC mediates hypertrophy downstream of CaN, perhaps as an alternative to NFAT. CRTC novel role in the heart is likely conserved in vertebrates as knockdown in zebrafish also caused cardiac restriction, as in fl ies. These data suggest that CRTC is involved in myocardial cell maintenance and that CaN-CRTC- Sarcalumenin/ tmn signaling represents a novel and conserved pathway underlying cardiac hypertrophy.
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Su X, Kovalchuk Y, Mojtahedi N, Kamari F, Claassen M, Garaschuk O. Neuronal silence as a prosurvival factor for adult-born olfactory bulb interneurons. Stem Cell Reports 2023; 18:1182-1195. [PMID: 37116486 DOI: 10.1016/j.stemcr.2023.03.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 03/29/2023] [Accepted: 03/29/2023] [Indexed: 04/30/2023] Open
Abstract
Adult-born cells, arriving daily into the rodent olfactory bulb, either integrate into the neural circuitry or get eliminated. However, whether these two populations differ in their morphological or functional properties remains unclear. Using longitudinal in vivo two-photon imaging, we monitored dendritic morphogenesis, odor-evoked responsiveness, ongoing Ca2+ signaling, and survival/death of adult-born juxtaglomerular neurons (abJGNs). We found that the maturation of abJGNs is accompanied by a significant reduction in dendritic complexity, with surviving and subsequently eliminated cells showing similar degrees of dendritic remodeling. Surprisingly, ∼63% of eliminated abJGNs acquired odor responsiveness before death, with amplitudes and time courses of odor-evoked responses similar to those recorded in surviving cells. However, the subsequently eliminated cell population exhibited significantly higher ongoing Ca2+ signals, with a difference visible even 10 days before death. Quantitative supervised machine learning analysis revealed a relationship between the abJGNs' activity and survival probability, with low neuronal activity being supportive for survival.
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Affiliation(s)
- Xin Su
- Department of Neurophysiology, Institute of Physiology, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Yury Kovalchuk
- Department of Neurophysiology, Institute of Physiology, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Nima Mojtahedi
- Department of Neurophysiology, Institute of Physiology, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Farzin Kamari
- Department of Neurophysiology, Institute of Physiology, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Manfred Claassen
- Department of Internal Medicine I, University Hospital Tübingen, Tübingen, Germany; Department of Computer Science, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Olga Garaschuk
- Department of Neurophysiology, Institute of Physiology, Eberhard Karls University of Tübingen, Tübingen, Germany.
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Pruunsild P, Bengtson CP, Loss I, Lohrer B, Bading H. Expression of the primate-specific LINC00473 RNA in mouse neurons promotes excitability and CREB-regulated transcription. J Biol Chem 2023; 299:104671. [PMID: 37019214 DOI: 10.1016/j.jbc.2023.104671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 03/27/2023] [Accepted: 03/30/2023] [Indexed: 04/05/2023] Open
Abstract
The LINC00473 (Lnc473) gene has previously been shown to be associated with cancer and psychiatric disorders. Its expression is elevated in several types of tumors and decreased in the brains of patients diagnosed with schizophrenia or major depression. In neurons, Lnc473 transcription is strongly responsive to synaptic activity, suggesting a role in adaptive, plasticity-related mechanisms. However, the function of Lnc473 is largely unknown. Here, using a recombinant adeno-associated viral vector, we introduced a primate-specific human Lnc473 RNA into mouse primary neurons. We show that this resulted in a transcriptomic shift comprising downregulation of epilepsy-associated genes and a rise in cAMP response element binding protein (CREB) activity, which was driven by augmented CREB-regulated transcription coactivator 1 (CRTC1) nuclear localization. Moreover, we demonstrate that ectopic Lnc473 expression increased neuronal excitability as well as network excitability. These findings suggest that primates may possess a lineage-specific activity-dependent modulator of CREB-regulated neuronal excitability.
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Ferdowsi PV, Ahuja KDK, Beckett JM, Myers S. Capsaicin and Zinc Signalling Pathways as Promising Targets for Managing Insulin Resistance and Type 2 Diabetes. Molecules 2023; 28:molecules28062861. [PMID: 36985831 PMCID: PMC10051839 DOI: 10.3390/molecules28062861] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/15/2023] [Accepted: 03/17/2023] [Indexed: 03/30/2023] Open
Abstract
The global burden of type 2 diabetes (T2DM) has led to significant interest in finding novel and effective therapeutic targets for this chronic disorder. Bioactive food components have effectively improved abnormal glucose metabolism associated with this disease. Capsaicin and zinc are food components that have shown the potential to improve glucose metabolism by activating signalling events in the target cells. Capsaicin and zinc stimulate glucose uptake through the activation of distinct pathways (AMPK and AKT, respectively); however, calcium signal transduction seems to be the common pathway between the two. The investigation of molecular pathways that are activated by capsaicin and zinc has the potential to lead to the discovery of new therapeutic targets for T2DM. Therefore, this literature review aims to provide a summary of the main signalling pathways triggered by capsaicin and zinc in glucose metabolism.
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Affiliation(s)
- Parisa Vahidi Ferdowsi
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Newnham Drive, Launceston, TAS 7248, Australia
- Children's Cancer Institute, Lowy Cancer Research Centre, C25/9 High St, Kensington, NSW 2750, Australia
| | - Kiran D K Ahuja
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Newnham Drive, Launceston, TAS 7248, Australia
| | - Jeffrey M Beckett
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Newnham Drive, Launceston, TAS 7248, Australia
| | - Stephen Myers
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Newnham Drive, Launceston, TAS 7248, Australia
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Li K, Figarella K, Su X, Kovalchuk Y, Gorzolka J, Neher JJ, Mojtahedi N, Casadei N, Hedrich UBS, Garaschuk O. Endogenous but not sensory-driven activity controls migration, morphogenesis and survival of adult-born juxtaglomerular neurons in the mouse olfactory bulb. Cell Mol Life Sci 2023; 80:98. [PMID: 36932186 PMCID: PMC10023654 DOI: 10.1007/s00018-023-04753-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 02/06/2023] [Accepted: 03/07/2023] [Indexed: 03/19/2023]
Abstract
The development and survival of adult-born neurons are believed to be driven by sensory signaling. Here, in vivo analyses of motility, morphology and Ca2+ signaling, as well as transcriptome analyses of adult-born juxtaglomerular cells with reduced endogenous excitability (via cell-specific overexpression of either Kv1.2 or Kir2.1 K+ channels), revealed a pronounced impairment of migration, morphogenesis, survival, and functional integration of these cells into the mouse olfactory bulb, accompanied by a reduction in cytosolic Ca2+ fluctuations, phosphorylation of CREB and pCREB-mediated gene expression. Moreover, K+ channel overexpression strongly downregulated genes involved in neuronal migration, differentiation, and morphogenesis and upregulated apoptosis-related genes, thus locking adult-born cells in an immature and vulnerable state. Surprisingly, cells deprived of sensory-driven activity developed normally. Together, the data reveal signaling pathways connecting the endogenous intermittent neuronal activity/Ca2+ fluctuations as well as enhanced Kv1.2/Kir2.1 K+ channel function to migration, maturation, and survival of adult-born neurons.
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Affiliation(s)
- Kaizhen Li
- Department of Neurophysiology, Institute of Physiology, University of Tübingen, Tübingen, Germany
- Department of Physiology, University of Bern, Bern, Switzerland
| | - Katherine Figarella
- Department of Neurophysiology, Institute of Physiology, University of Tübingen, Tübingen, Germany
| | - Xin Su
- Department of Neurophysiology, Institute of Physiology, University of Tübingen, Tübingen, Germany
| | - Yury Kovalchuk
- Department of Neurophysiology, Institute of Physiology, University of Tübingen, Tübingen, Germany
| | - Jessika Gorzolka
- Department of Neurophysiology, Institute of Physiology, University of Tübingen, Tübingen, Germany
| | - Jonas J Neher
- German Center for Neurodegenerative Diseases (DZNE), Tübingen, Germany
- Department of Cellular Neurology, Hertie Institute for Clinical Brain Research, University of Tübingen, Tübingen, Germany
| | - Nima Mojtahedi
- Department of Neurophysiology, Institute of Physiology, University of Tübingen, Tübingen, Germany
| | - Nicolas Casadei
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Tübingen, Germany
- NGS Competence Center Tübingen, Tübingen, Germany
| | - Ulrike B S Hedrich
- Department of Neurology and Epileptology, Hertie Institute for Clinical Brain Research, University of Tübingen, Tübingen, Germany
| | - Olga Garaschuk
- Department of Neurophysiology, Institute of Physiology, University of Tübingen, Tübingen, Germany.
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8
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Modulation of Synaptic Plasticity Genes Associated to DNA Damage in a Model of Huntington's Disease. Neurochem Res 2023; 48:2093-2103. [PMID: 36790580 DOI: 10.1007/s11064-023-03889-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 02/01/2023] [Accepted: 02/03/2023] [Indexed: 02/16/2023]
Abstract
Huntington's disease (HD) is a disease characterized by the progressive degeneration of nerve cells in the brain. DNA damage has been implicated in many neurological disorders; however, the association between this damage and the impaired signaling related to neurodegeneration is still unclear. The transcription factor c-AMP-responsive element binding protein (CREB) has a relevant role in the neuronal plasticity process regulating the expression of several genes, including brain-derived neurotrophic factor (BDNF). Here we analyzed the direct link between DNA damage and the expression of genes involved in neuronal plasticity. The study was performed in model cell lines STHdhQ7 (wild type) and STHdhQ111 (HD model). Treatment with Etoposide (Eto) was used to induce double-strand breaks (DSBs) to evaluate the DNA damage response (DDR) and the expression of synaptic plasticity genes. Eto treatment induced phosphorylation of ATM (p-ATM) and H2AX (γH2AX), markers of DDR, in both cell lines. Interestingly, upon DNA damage, STHdhQ7 cells showed increased expression of activity-regulated cytoskeleton associated protein (Arc) and BDNF when compared to the HD cell line model. Additionally, Eto induced CREB activation with a differential localization of its co-activators in the cell types analyzed. These results suggest that DSBs impact differentially the gene expression patterns of plasticity genes in the normal cell line versus the HD model. This effect is mediated by the impaired localization of CREB-binding protein (CBP) and histone acetylation in the HD model. Our results highlight the role of epigenetics and DNA repair on HD and therefore we suggest that future studies should explore in depth the epigenetic landscape on neuronal pathologies with the goal to further understand molecular mechanisms and pinpoint therapeutic targets.
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Guilherme JPLF, Semenova EA, Larin AK, Yusupov RA, Generozov EV, Ahmetov II. Genomic Predictors of Brisk Walking Are Associated with Elite Sprinter Status. Genes (Basel) 2022; 13:genes13101710. [PMID: 36292594 PMCID: PMC9602420 DOI: 10.3390/genes13101710] [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: 09/07/2022] [Revised: 09/20/2022] [Accepted: 09/20/2022] [Indexed: 11/16/2022] Open
Abstract
Brisk walkers are physically more active, taller, have reduced body fat and greater physical fitness and muscle strength. The aim of our study was to determine whether genetic variants associated with increased walking pace were overrepresented in elite sprinters compared to controls. A total of 70 single-nucleotide polymorphisms (SNPs) previously identified in a genome-wide association study (GWAS) of self-reported walking pace in 450,967 European individuals were explored in relation to sprinter status. Genotyping of 137 Russian elite sprinters and 126 controls was performed using microarray technology. Favorable (i.e., high-speed-walking) alleles of 15 SNPs (FHL2 rs55680124 C, SLC39A8 rs13107325 C, E2F3 rs4134943 T, ZNF568 rs1667369 A, GDF5 rs143384 G, PPARG rs2920503 T, AUTS2 rs10452738 A, IGSF3 rs699785 A, CCT3 rs11548200 T, CRTAC1 rs2439823 A, ADAM15 rs11264302 G, C6orf106 rs205262 A, AKAP6 rs12883788 C, CRTC1 rs11881338 A, NRXN3 rs8011870 G) were identified as having positive associations with sprinter status (p < 0.05), of which IGSF3 rs699785 survived correction for multiple testing (p = 0.00004) and was linked (p = 0.042) with increased proportions of fast-twitch muscle fibers of m. vastus lateralis in physically active men (n = 67). Polygenic analysis revealed that individuals with ≥18 favorable alleles of the 15 SNPs have an increased odds ratio of being an elite sprinter when compared to those with ≤17 alleles (OR: 7.89; p < 0.0001). Using UK Biobank data, we also established the association of 14 favorable alleles with low BMI and fat percentage, 8 alleles with increased handgrip strength, and 7 alleles with increased height and fat-free mass. In conclusion, we have identified 15 new genetic markers associated with sprinter status.
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Affiliation(s)
- João Paulo L. F. Guilherme
- Laboratory of Applied Nutrition and Metabolism, School of Physical Education and Sport, University of São Paulo, São Paulo 05508-030, Brazil
- Laboratory of Biochemistry and Molecular Biology of Exercise, School of Physical Education and Sport, University of São Paulo, São Paulo 05508-030, Brazil
- Correspondence: (J.P.L.F.G.); (I.I.A.)
| | - Ekaterina A. Semenova
- Department of Molecular Biology and Genetics, Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, 119435 Moscow, Russia
- Research Institute of Physical Culture and Sport, Volga Region State University of Physical Culture, Sport and Tourism, 420138 Kazan, Russia
| | - Andrey K. Larin
- Department of Molecular Biology and Genetics, Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, 119435 Moscow, Russia
| | - Rinat A. Yusupov
- Department of Physical Culture and Sport, Kazan National Research Technical University Named after A.N. Tupolev-KAI, 420111 Kazan, Russia
| | - Edward V. Generozov
- Department of Molecular Biology and Genetics, Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, 119435 Moscow, Russia
| | - Ildus I. Ahmetov
- Department of Physical Education, Plekhanov Russian University of Economics, 115093 Moscow, Russia
- Laboratory of Molecular Genetics, Central Research Laboratory, Kazan State Medical University, 420012 Kazan, Russia
- Sports Genetics Laboratory, St. Petersburg Research Institute of Physical Culture, 191040 St. Petersburg, Russia
- Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool L3 5AF, UK
- Correspondence: (J.P.L.F.G.); (I.I.A.)
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Rienecker KDA, Poston RG, Segales JS, Finholm IW, Sono MH, Munteanu SJ, Ghaninejad-Esfahani M, Rejepova A, Tejeda-Garibay S, Wickman K, Marron Fernandez de Velasco E, Thayer SA, Saha RN. Mild membrane depolarization in neurons induces immediate early gene transcription and acutely subdues responses to successive stimulus. J Biol Chem 2022; 298:102278. [PMID: 35863435 PMCID: PMC9396413 DOI: 10.1016/j.jbc.2022.102278] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 07/12/2022] [Accepted: 07/13/2022] [Indexed: 11/22/2022] Open
Abstract
Immediate early genes (IEGs) are transcribed in response to neuronal activity from sensory stimulation during multiple adaptive processes in the brain. The transcriptional profile of IEGs is indicative of the duration of neuronal activity, but its sensitivity to the strength of depolarization remains unknown. Also unknown is whether activity history of graded potential changes influence future neuronal activity. In this work with dissociated rat cortical neurons, we found that mild depolarization—mediated by elevated extracellular potassium (K+)—induces a wide array of rapid IEGs and transiently depresses transcriptional and signaling responses to a successive stimulus. This latter effect was independent of de novo transcription, translation, and signaling via calcineurin or mitogen-activated protein kinase. Furthermore, as measured by multiple electrode arrays and calcium imaging, mild depolarization acutely subdues subsequent spontaneous and bicuculline-evoked activity via calcium- and N-methyl-d-aspartate receptor–dependent mechanisms. Collectively, this work suggests that a recent history of graded potential changes acutely depress neuronal intrinsic properties and subsequent responses. Such effects may have several potential downstream implications, including reducing signal-to-noise ratio during synaptic plasticity processes.
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Affiliation(s)
- Kira D A Rienecker
- Molecular and Cell Biology Department, School of Natural Sciences, University of California, Merced, 5200 North Lake Road, Merced, California, USA, 95343
| | - Robert G Poston
- Molecular and Cell Biology Department, School of Natural Sciences, University of California, Merced, 5200 North Lake Road, Merced, California, USA, 95343
| | - Joshua S Segales
- Molecular and Cell Biology Department, School of Natural Sciences, University of California, Merced, 5200 North Lake Road, Merced, California, USA, 95343
| | - Isabelle W Finholm
- Department of Pharmacology, University of Minnesota Medical School, Minneapolis, MN, 55455, USA
| | - Morgan H Sono
- Molecular and Cell Biology Department, School of Natural Sciences, University of California, Merced, 5200 North Lake Road, Merced, California, USA, 95343
| | - Sorina J Munteanu
- Molecular and Cell Biology Department, School of Natural Sciences, University of California, Merced, 5200 North Lake Road, Merced, California, USA, 95343
| | - Mina Ghaninejad-Esfahani
- Molecular and Cell Biology Department, School of Natural Sciences, University of California, Merced, 5200 North Lake Road, Merced, California, USA, 95343
| | - Ayna Rejepova
- Molecular and Cell Biology Department, School of Natural Sciences, University of California, Merced, 5200 North Lake Road, Merced, California, USA, 95343
| | - Susana Tejeda-Garibay
- Molecular and Cell Biology Department, School of Natural Sciences, University of California, Merced, 5200 North Lake Road, Merced, California, USA, 95343
| | - Kevin Wickman
- Department of Pharmacology, University of Minnesota Medical School, Minneapolis, MN, 55455, USA
| | | | - Stanley A Thayer
- Department of Pharmacology, University of Minnesota Medical School, Minneapolis, MN, 55455, USA
| | - Ramendra N Saha
- Molecular and Cell Biology Department, School of Natural Sciences, University of California, Merced, 5200 North Lake Road, Merced, California, USA, 95343.
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Rossetti C, Cherix A, Guiraud LF, Cardinaux JR. New Insights Into the Pivotal Role of CREB-Regulated Transcription Coactivator 1 in Depression and Comorbid Obesity. Front Mol Neurosci 2022; 15:810641. [PMID: 35242012 PMCID: PMC8886117 DOI: 10.3389/fnmol.2022.810641] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Accepted: 01/07/2022] [Indexed: 11/13/2022] Open
Abstract
Depression and obesity are major public health concerns, and there is mounting evidence that they share etiopathophysiological mechanisms. The neurobiological pathways involved in both mood and energy balance regulation are complex, multifactorial and still incompletely understood. As a coactivator of the pleiotropic transcription factor cAMP response element-binding protein (CREB), CREB-regulated transcription coactivator 1 (CRTC1) has recently emerged as a novel regulator of neuronal plasticity and brain functions, while CRTC1 dysfunction has been associated with neurodegenerative and psychiatric diseases. This review focuses on recent evidence emphasizing the critical role of CRTC1 in the neurobiology of depression and comorbid obesity. We discuss the role of CRTC1 downregulation in mediating chronic stress-induced depressive-like behaviors, and antidepressant response in the light of the previously characterized Crtc1 knockout mouse model of depression. The putative role of CRTC1 in the alteration of brain energy homeostasis observed in depression is also discussed. Finally, we highlight rodent and human studies supporting the critical involvement of CRTC1 in depression-associated obesity.
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Affiliation(s)
- Clara Rossetti
- Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital, University of Lausanne, Prilly, Switzerland
- Service of Child and Adolescent Psychiatry, Department of Psychiatry, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Antoine Cherix
- Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital, University of Lausanne, Prilly, Switzerland
- Laboratory for Functional and Metabolic Imaging (LIFMET), Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Laetitia F. Guiraud
- Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital, University of Lausanne, Prilly, Switzerland
- Service of Child and Adolescent Psychiatry, Department of Psychiatry, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Jean-René Cardinaux
- Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital, University of Lausanne, Prilly, Switzerland
- Service of Child and Adolescent Psychiatry, Department of Psychiatry, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
- *Correspondence: Jean-René Cardinaux,
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Yan H, Kanki H, Matsumura S, Kawano T, Nishiyama K, Sugiyama S, Takemori H, Mochizuki H, Sasaki T. MiRNA-132/212 regulates tight junction stabilization in blood-brain barrier after stroke. Cell Death Discov 2021; 7:380. [PMID: 34880207 PMCID: PMC8654926 DOI: 10.1038/s41420-021-00773-w] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 11/15/2021] [Accepted: 11/24/2021] [Indexed: 12/31/2022] Open
Abstract
MicroRNA-132/212 has been supposed as a critical gene related to the blood–brain barrier (BBB) protection after stroke, but its regulation pathway including the upstream regulator and downstream targets is still unclear. Herein, we demonstrated the cAMP response element-binding protein (CREB)-regulated transcription coactivator-1 (CRTC1) to be the upstream regulator of miRNA-132/212 using CRTC1 knockout and wild-type mice. CRTC1 deletion led to the reduction of miRNA-132/212 expression in mice brain after ischemic stroke, significantly increased infarct volume, and aggravated BBB permeability with worsening neurological deficits. Furthermore, we identified that miRNA-132 repressed Claudin-1, tight junction-associated protein-1 (TJAP-1), and RNA-binding Fox-1 (RBFox-1) by directly binding to their respective 3′-untranslated regions, which alleviated the ischemic damage by enhancing neuronal survival and BBB integrity. Moreover, the co-culture of endothelial cells with CRTC1-deficient neurons aggravated the cell vulnerability to hypoxia, also supporting the idea that miRNA-132/212 cluster is regulated by CRTC1 and acts as a crucial role in the mitigation of ischemic damage. This work is a step forward for understanding the role of miRNA-132/212 in neurovascular interaction and may be helpful for potential gene therapy of ischemic stroke.
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Affiliation(s)
- Haomin Yan
- Department of Neurology, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Hideaki Kanki
- Department of Neurology, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Shigenobu Matsumura
- Laboratory of Nutrition Chemistry, Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Tomohiro Kawano
- Department of Neurology, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Kumiko Nishiyama
- Department of Neurology, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Shintaro Sugiyama
- Department of Neurology, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Hiroshi Takemori
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Gifu, Japan
| | - Hideki Mochizuki
- Department of Neurology, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan
| | - Tsutomu Sasaki
- Department of Neurology, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan.
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13
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Li X, Zhong H, Wang Z, Xiao R, Antonson P, Liu T, Wu C, Zou J, Wang L, Nalvarte I, Xu H, Warner M, Gustafsson JA, Fan X. Loss of liver X receptor β in astrocytes leads to anxiety-like behaviors via regulating synaptic transmission in the medial prefrontal cortex in mice. Mol Psychiatry 2021; 26:6380-6393. [PMID: 33963286 DOI: 10.1038/s41380-021-01139-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 04/08/2021] [Accepted: 04/19/2021] [Indexed: 02/03/2023]
Abstract
Astrocytes are integral components of synaptic transmission, and their dysfunction leads to neuropsychiatric disorders such as anxiety and depression. Liver X receptor β (LXRβ) is expressed in astrocytes, and LXRβ global knockout mice shows impaired synaptic formation. In order to define the role of LXRβ in astrocytes, we used a conditional Cre-loxP system to specifically remove LXRβ from astrocytes. We found that this deletion caused anxiety-like but not depressive-like behaviors in adult male mice. This behavioral phenotype could be completely reproduced by selective deletion of LXRβ in astrocytes in the medial prefrontal cortex (mPFC). Pyramidal neurons in layer V of mPFC are involved in mood behaviors. We found that there was an increased spontaneous excitatory synaptic transmission in layer V pyramidal neurons of the mPFC of these mice. This was concurrent with increased dendritic complexity, despite normal appearance and number of dendritic spines. In addition, gene ontology analysis of RNA sequencing revealed that deletion of astrocytic LXRβ led to the enrichment of the process of synaptic transmission in mPFC. Finally, we also confirmed that renormalized excitatory synaptic transmission in layer V pyramidal neurons alleviated the anxiety in mice with astrocytic LXRβ deletion in mPFC. Together, our findings reveal that astrocytic LXRβ in mPFC is critical in the regulation of synaptic transmission, and this provides a potential new target for treatment of anxiety-like behavior.
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Affiliation(s)
- Xin Li
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing, PR China
| | - Hongyu Zhong
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing, PR China
| | - Zhongke Wang
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing, PR China
| | - Rui Xiao
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing, PR China
| | - Per Antonson
- Department of Biosciences and Nutrition, Karolinska Institute, Huddinge, Sweden
| | - Tianyao Liu
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing, PR China
| | - Chuan Wu
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing, PR China
| | - Jiao Zou
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing, PR China
| | - Lian Wang
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing, PR China
| | - Ivan Nalvarte
- Department of Biosciences and Nutrition, Karolinska Institute, Huddinge, Sweden
| | - Haiwei Xu
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, PR China
| | - Margaret Warner
- Center for Nuclear Receptors and Cell Signaling, Department of Biology and Biochemistry, University of Houston, Houston, TX, USA
| | - Jan-Ake Gustafsson
- Department of Biosciences and Nutrition, Karolinska Institute, Huddinge, Sweden. .,Center for Nuclear Receptors and Cell Signaling, Department of Biology and Biochemistry, University of Houston, Houston, TX, USA.
| | - Xiaotang Fan
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing, PR China.
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14
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Chowdhury R, Wang Y, Campbell M, Goderie SK, Doyle F, Tenenbaum SA, Kusek G, Kiehl TR, Ansari SA, Boles NC, Temple S. STAU2 binds a complex RNA cargo that changes temporally with production of diverse intermediate progenitor cells during mouse corticogenesis. Development 2021; 148:271165. [PMID: 34345913 DOI: 10.1242/dev.199376] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Accepted: 07/05/2021] [Indexed: 12/18/2022]
Abstract
STAU2 is a double-stranded RNA-binding protein enriched in the nervous system. During asymmetric divisions in the developing mouse cortex, STAU2 preferentially distributes into the intermediate progenitor cell (IPC), delivering RNA molecules that can impact IPC behavior. Corticogenesis occurs on a precise time schedule, raising the hypothesis that the cargo STAU2 delivers into IPCs changes over time. To test this, we combine RNA-immunoprecipitation with sequencing (RIP-seq) over four stages of mouse cortical development, generating a comprehensive cargo profile for STAU2. A subset of the cargo was 'stable', present at all stages, and involved in chromosome organization, macromolecule localization, translation and DNA repair. Another subset was 'dynamic', changing with cortical stage, and involved in neurogenesis, cell projection organization, neurite outgrowth, and included cortical layer markers. Notably, the dynamic STAU2 cargo included determinants of IPC versus neuronal fates and genes contributing to abnormal corticogenesis. Knockdown of one STAU2 target, Taf13, previously linked to microcephaly and impaired myelination, reduced oligodendrogenesis in vitro. We conclude that STAU2 contributes to the timing of corticogenesis by binding and delivering complex and temporally regulated RNA cargo into IPCs.
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Affiliation(s)
- Rebecca Chowdhury
- Neural Stem Cell Institute, Regenerative Research Foundation, Rensselaer, NY 12144, USA
| | - Yue Wang
- Neural Stem Cell Institute, Regenerative Research Foundation, Rensselaer, NY 12144, USA
| | - Melissa Campbell
- Neural Stem Cell Institute, Regenerative Research Foundation, Rensselaer, NY 12144, USA
| | - Susan K Goderie
- Neural Stem Cell Institute, Regenerative Research Foundation, Rensselaer, NY 12144, USA
| | - Francis Doyle
- Nanobioscience Constellation, College of Nanoscale Science and Engineering, SUNY Polytechnic Institute, Albany, NY 12203, USA
| | - Scott A Tenenbaum
- Nanobioscience Constellation, College of Nanoscale Science and Engineering, SUNY Polytechnic Institute, Albany, NY 12203, USA
| | - Gretchen Kusek
- Neural Stem Cell Institute, Regenerative Research Foundation, Rensselaer, NY 12144, USA
| | - Thomas R Kiehl
- Neural Stem Cell Institute, Regenerative Research Foundation, Rensselaer, NY 12144, USA
| | - Suraiya A Ansari
- Department of Biochemistry and Molecular Biology, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box 17666, Al Ain, United Arab Emirates
| | - Nathan C Boles
- Neural Stem Cell Institute, Regenerative Research Foundation, Rensselaer, NY 12144, USA
| | - Sally Temple
- Neural Stem Cell Institute, Regenerative Research Foundation, Rensselaer, NY 12144, USA
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15
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Pan Y, He X, Li C, Li Y, Li W, Zhang H, Wang Y, Zhou G, Yang J, Li J, Qu J, Wang H, Gao Z, Shen Y, Li T, Hu H, Ma H. Neuronal activity recruits the CRTC1/CREB axis to drive transcription-dependent autophagy for maintaining late-phase LTD. Cell Rep 2021; 36:109398. [PMID: 34289350 DOI: 10.1016/j.celrep.2021.109398] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 05/05/2021] [Accepted: 06/22/2021] [Indexed: 12/31/2022] Open
Abstract
Cellular resources must be reorganized for long-term synaptic plasticity during brain information processing, in which coordinated gene transcription and protein turnover are required. However, the mechanism underlying this process remains elusive. Here, we report that activating N-methyl-d-aspartate receptors (NMDARs) induce transcription-dependent autophagy for synaptic turnover and late-phase long-term synaptic depression (L-LTD), which invokes cytoplasm-to-nucleus signaling mechanisms known to be required for late-phase long-term synaptic potentiation (L-LTP). Mechanistically, LTD-inducing stimuli specifically dephosphorylate CRTC1 (CREB-regulated transcription coactivator 1) at Ser-151 and are advantaged in recruiting CRTC1 from cytoplasm to the nucleus, where it competes with FXR (fed-state sensing nuclear receptor) for binding to CREB (cAMP response element-binding protein) and drives autophagy gene expression. Disrupting synergistic actions of CREB and CRTC1 (two essential L-LTP transcription factors) impairs transcription-dependent autophagy induction and prevents NMDAR-dependent L-LTD, which can be rescued by constitutively inducing mechanistic target of rapamycin (mTOR)-dependent autophagy. Together, these findings uncover mechanistic commonalities between L-LTP and L-LTD, suggesting that synaptic activity can tune excitation-transcription coupling for distinct long-lasting synaptic remodeling.
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Affiliation(s)
- Yue Pan
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Affiliated Mental Health Center, Zhejiang University School of Medicine, Hangzhou 310058, China; NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou 310058, China
| | - Xingzhi He
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Affiliated Mental Health Center, Zhejiang University School of Medicine, Hangzhou 310058, China; NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou 310058, China
| | - Cuicui Li
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Affiliated Mental Health Center, Zhejiang University School of Medicine, Hangzhou 310058, China; NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou 310058, China
| | - Yanjun Li
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Affiliated Mental Health Center, Zhejiang University School of Medicine, Hangzhou 310058, China; NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou 310058, China
| | - Wenwen Li
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Affiliated Mental Health Center, Zhejiang University School of Medicine, Hangzhou 310058, China; NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou 310058, China
| | - Hanbin Zhang
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Affiliated Mental Health Center, Zhejiang University School of Medicine, Hangzhou 310058, China; NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou 310058, China
| | - Yang Wang
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Affiliated Mental Health Center, Zhejiang University School of Medicine, Hangzhou 310058, China; NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou 310058, China
| | - Guangjun Zhou
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Affiliated Mental Health Center, Zhejiang University School of Medicine, Hangzhou 310058, China; NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou 310058, China
| | - Jing Yang
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Affiliated Mental Health Center, Zhejiang University School of Medicine, Hangzhou 310058, China; NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou 310058, China
| | - Jiarui Li
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Affiliated Mental Health Center, Zhejiang University School of Medicine, Hangzhou 310058, China; NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou 310058, China
| | - Jing Qu
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Affiliated Mental Health Center, Zhejiang University School of Medicine, Hangzhou 310058, China; NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou 310058, China
| | - Hao Wang
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Affiliated Mental Health Center, Zhejiang University School of Medicine, Hangzhou 310058, China; NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou 310058, China
| | - Zhihua Gao
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Affiliated Mental Health Center, Zhejiang University School of Medicine, Hangzhou 310058, China; NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou 310058, China
| | - Ying Shen
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Affiliated Mental Health Center, Zhejiang University School of Medicine, Hangzhou 310058, China; NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou 310058, China
| | - Tao Li
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Affiliated Mental Health Center, Zhejiang University School of Medicine, Hangzhou 310058, China; NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou 310058, China
| | - Hailan Hu
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Affiliated Mental Health Center, Zhejiang University School of Medicine, Hangzhou 310058, China; NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou 310058, China; Research Units for Emotion and Emotion Disorders, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Huan Ma
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Affiliated Mental Health Center, Zhejiang University School of Medicine, Hangzhou 310058, China; NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou 310058, China; Research Units for Emotion and Emotion Disorders, Chinese Academy of Medical Sciences, Beijing 100730, China.
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16
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Yan P, Xue Z, Li D, Ni S, Wang C, Jin X, Zhou D, Li X, Zhao X, Chen X, Cui W, Xu D, Zhou W, Zhang J. Dysregulated CRTC1-BDNF signaling pathway in the hippocampus contributes to Aβ oligomer-induced long-term synaptic plasticity and memory impairment. Exp Neurol 2021; 345:113812. [PMID: 34274327 DOI: 10.1016/j.expneurol.2021.113812] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 05/30/2021] [Accepted: 07/12/2021] [Indexed: 11/16/2022]
Abstract
Expression of CREB-regulated transcription coactivator 1 (CRTC1) in the hippocampus is impaired in Alzheimer's disease (AD). However, CRTC1 related mechanisms associated with long-term synaptic plasticity impairment and cognitive decline in the onset of AD are unknown. In this study, electrophysiological recordings indicated that lentivirus-mediated CRTC1 overexpression effectively ameliorates suppression of late-phase long-term potentiation (L-LTP) in rat hippocampal slices treated with oligomeric amyloid β(1-42) peptides (oAβ42) (200 nM). In addition, application of oAβ42 and genetic knockdown of CRTC1 by lentivirus-mediated CRTC1-shRNA inhibit L-LTP, whereas their combination does not further impair L-LTP. Brain-derived neurotrophic factor (BDNF), an important downstream protein confers protection of CRTC1 overexpression against oAβ42-induced L-LTP impairment as shown by administration of K252a (200 nM) and TrkB-FC (20 μg/ml). Furthermore, behavioral and western blotting analyses showed that CRTC1 overexpression reverses oAβ42-induced hippocampal-dependent cognitive deficits, downregulation of CRTC1 and BDNF expression. Notably, CRTC1-shRNA directly elicits cognitive deficits. In summary, these findings show that hippocampal CRTC1 signaling is affected by soluble oAβ, and CRTC1-BDNF pathway is involved in hippocampal L-LTP impairment and memory deficits induced by oAβ42.
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Affiliation(s)
- Peiyun Yan
- The affiliated hospital of Medical School, Ningbo University, Ningbo 315211, China
| | - Zhancheng Xue
- The affiliated hospital of Medical School, Ningbo University, Ningbo 315211, China; Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo 315211, China
| | - Dezhu Li
- The affiliated hospital of Medical School, Ningbo University, Ningbo 315211, China; Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo 315211, China
| | - Saiqi Ni
- The affiliated hospital of Medical School, Ningbo University, Ningbo 315211, China; Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo 315211, China
| | - Chuang Wang
- The affiliated hospital of Medical School, Ningbo University, Ningbo 315211, China; Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo 315211, China; Department of Physiology and Pharmacology, School of Medicine, Ningbo University, Ningbo 315211, China
| | - Xinchun Jin
- Department of Anatomy, Histology and Embrology, School of Basic Medical Sciences, Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, 100069, China
| | | | - Xingxing Li
- Ningbo Kangning Hospital, Ningbo 315210, China
| | - Xin Zhao
- The affiliated hospital of Medical School, Ningbo University, Ningbo 315211, China; Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo 315211, China; Department of Physiology and Pharmacology, School of Medicine, Ningbo University, Ningbo 315211, China
| | - Xiaowei Chen
- The affiliated hospital of Medical School, Ningbo University, Ningbo 315211, China; Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo 315211, China; Department of Physiology and Pharmacology, School of Medicine, Ningbo University, Ningbo 315211, China
| | - Wei Cui
- The affiliated hospital of Medical School, Ningbo University, Ningbo 315211, China; Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo 315211, China; Department of Physiology and Pharmacology, School of Medicine, Ningbo University, Ningbo 315211, China
| | - Dingli Xu
- The affiliated hospital of Medical School, Ningbo University, Ningbo 315211, China
| | - Wenhua Zhou
- Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo 315211, China; Ningbo Kangning Hospital, Ningbo 315210, China
| | - Junfang Zhang
- The affiliated hospital of Medical School, Ningbo University, Ningbo 315211, China; Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo 315211, China; Department of Physiology and Pharmacology, School of Medicine, Ningbo University, Ningbo 315211, China.
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17
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Cong C, Liang W, Zhang C, Wang Y, Yang Y, Wang X, Wang S, Huo D, Wang H, Wang D, Feng H. PAK4 suppresses motor neuron degeneration in hSOD1 G93A -linked amyotrophic lateral sclerosis cell and rat models. Cell Prolif 2021; 54:e13003. [PMID: 33615605 PMCID: PMC8016643 DOI: 10.1111/cpr.13003] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/24/2020] [Accepted: 01/14/2021] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVES Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease characterized by the progressive loss of motor neurons (MN). CREB pathway-mediated inhibition of apoptosis contributes to neuron protection, and PAK4 activates CREB signalling in diverse cell types. This study aimed to investigate PAK4's effect and mechanism of action in ALS. METHODS We analysed RNA levels by qRT-PCR, protein levels by immunofluorescence and Western blotting, and apoptosis by flow cytometry and TUNEL staining. Cell transfection was performed for in vitro experiment. Mice were injected intraspinally to evaluate PAK4 function in vivo experiment. Rotarod test was performed to measure motor function. RESULTS The expression and activation of PAK4 significantly decreased in the cell and mouse models of ALS as the disease progressed, which was caused by the negative regulation of miR-9-5p. Silencing of PAK4 increased the apoptosis of MN by inhibiting CREB-mediated neuroprotection, whereas overexpression of PAK4 protected MN from hSOD1G93A -induced degeneration by activating CREB signalling. The neuroprotective effect of PAK4 was markedly inhibited by CREB inhibitor. In ALS models, the PAK4/CREB pathway was inhibited, and cell apoptosis increased. In vivo experiments revealed that PAK4 overexpression in the spinal neurons of hSOD1G93A mice suppressed MN degeneration, prolonged survival and promoted the CREB pathway. CONCLUSIONS PAK4 protects MN from degeneration by activating the anti-apoptotic effects of CREB signalling, suggesting it may be a therapeutic target in ALS.
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Affiliation(s)
- Chaohua Cong
- Department of Neurology, The First Clinical College of Harbin Medical University, Harbin, China
| | - Weiwei Liang
- Department of Neurology, The First Clinical College of Harbin Medical University, Harbin, China
| | - Chunting Zhang
- Department of Neurology, The First Clinical College of Harbin Medical University, Harbin, China
| | - Ying Wang
- Department of Neurology, The First Clinical College of Harbin Medical University, Harbin, China
| | - Yueqing Yang
- Department of Neurology, The Second Clinical College of Harbin Medical University, Harbin, China
| | - Xudong Wang
- Department of Neurology, The First Clinical College of Harbin Medical University, Harbin, China
| | - Shuyu Wang
- Department of Neurology, The First Clinical College of Harbin Medical University, Harbin, China
| | - Di Huo
- Department of Neurology, The First Clinical College of Harbin Medical University, Harbin, China
| | - Hongyong Wang
- Department of Neurology, The First Clinical College of Harbin Medical University, Harbin, China
| | - Di Wang
- Department of Neurology, The First Clinical College of Harbin Medical University, Harbin, China
| | - Honglin Feng
- Department of Neurology, The First Clinical College of Harbin Medical University, Harbin, China
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18
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Advances in Understanding CREB Signaling-Mediated Regulation of the Pathogenesis and Progression of Epilepsy. Clin Neurol Neurosurg 2020; 196:106018. [DOI: 10.1016/j.clineuro.2020.106018] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 05/21/2020] [Accepted: 06/12/2020] [Indexed: 11/22/2022]
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19
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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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20
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Esvald EE, Tuvikene J, Sirp A, Patil S, Bramham CR, Timmusk T. CREB Family Transcription Factors Are Major Mediators of BDNF Transcriptional Autoregulation in Cortical Neurons. J Neurosci 2020; 40:1405-1426. [PMID: 31915257 PMCID: PMC7044735 DOI: 10.1523/jneurosci.0367-19.2019] [Citation(s) in RCA: 123] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 12/10/2019] [Accepted: 12/28/2019] [Indexed: 01/19/2023] Open
Abstract
BDNF signaling via its transmembrane receptor TrkB has an important role in neuronal survival, differentiation, and synaptic plasticity. Remarkably, BDNF is capable of modulating its own expression levels in neurons, forming a transcriptional positive feedback loop. In the current study, we have investigated this phenomenon in primary cultures of rat cortical neurons using overexpression of dominant-negative forms of several transcription factors, including CREB, ATF2, C/EBP, USF, and NFAT. We show that CREB family transcription factors, together with the coactivator CBP/p300, but not the CRTC family, are the main regulators of rat BDNF gene expression after TrkB signaling. CREB family transcription factors are required for the early induction of all the major BDNF transcripts, whereas CREB itself directly binds only to BDNF promoter IV, is phosphorylated in response to BDNF-TrkB signaling, and activates transcription from BDNF promoter IV by recruiting CBP. Our complementary reporter assays with BDNF promoter constructs indicate that the regulation of BDNF by CREB family after BDNF-TrkB signaling is generally conserved between rat and human. However, we demonstrate that a nonconserved functional cAMP-responsive element in BDNF promoter IXa in humans renders the human promoter responsive to BDNF-TrkB-CREB signaling, whereas the rat ortholog is unresponsive. Finally, we show that extensive BDNF transcriptional autoregulation, encompassing all major BDNF transcripts, occurs also in vivo in the adult rat hippocampus during BDNF-induced LTP. Collectively, these results improve the understanding of the intricate mechanism of BDNF transcriptional autoregulation.SIGNIFICANCE STATEMENT Deeper understanding of stimulus-specific regulation of BDNF gene expression is essential to precisely adjust BDNF levels that are dysregulated in various neurological disorders. Here, we have elucidated the molecular mechanisms behind TrkB signaling-dependent BDNF mRNA induction and show that CREB family transcription factors are the main regulators of BDNF gene expression after TrkB signaling. Our results suggest that BDNF-TrkB signaling may induce BDNF gene expression in a distinct manner compared with neuronal activity. Moreover, our data suggest the existence of a stimulus-specific distal enhancer modulating BDNF gene expression.
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MESH Headings
- Animals
- Basic-Leucine Zipper Transcription Factors/physiology
- Brain-Derived Neurotrophic Factor/biosynthesis
- Brain-Derived Neurotrophic Factor/genetics
- Brain-Derived Neurotrophic Factor/pharmacology
- Cells, Cultured
- Cerebral Cortex/cytology
- Cerebral Cortex/metabolism
- Cyclic AMP Response Element-Binding Protein/physiology
- Cytoskeletal Proteins/biosynthesis
- Cytoskeletal Proteins/genetics
- Feedback, Physiological
- Female
- Gene Expression Regulation/genetics
- Genes, Dominant
- Genes, Reporter
- Genes, Synthetic
- Hippocampus/cytology
- Hippocampus/metabolism
- MAP Kinase Signaling System/physiology
- Male
- Nerve Tissue Proteins/biosynthesis
- Nerve Tissue Proteins/genetics
- Nerve Tissue Proteins/physiology
- Neurons/metabolism
- Promoter Regions, Genetic
- Protein Kinase Inhibitors/pharmacology
- Rats
- Rats, Sprague-Dawley
- Receptor, trkB/physiology
- Recombinant Proteins/pharmacology
- Response Elements
- Signal Transduction/physiology
- Species Specificity
- Transcription, Genetic/genetics
- Transduction, Genetic
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Affiliation(s)
- Eli-Eelika Esvald
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn 12618, Estonia,
- Protobios LLC, Tallinn 12618, Estonia
| | - Jürgen Tuvikene
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn 12618, Estonia
- Protobios LLC, Tallinn 12618, Estonia
| | - Alex Sirp
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn 12618, Estonia
| | - Sudarshan Patil
- Department of Biomedicine and KG Jebsen Centre for Neuropsychiatric Disorders, University of Bergen, 5009 Bergen, Norway, and
| | - Clive R Bramham
- Department of Biomedicine and KG Jebsen Centre for Neuropsychiatric Disorders, University of Bergen, 5009 Bergen, Norway, and
| | - Tõnis Timmusk
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn 12618, Estonia,
- Protobios LLC, Tallinn 12618, Estonia
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21
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Yan J, Long Y, Zhou T, Ren J, Li Q, Song G, Cui Z. Dynamic Phosphoproteome Profiling of Zebrafish Embryonic Fibroblasts during Cold Acclimation. Proteomics 2020; 20:e1900257. [PMID: 31826332 DOI: 10.1002/pmic.201900257] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 11/24/2019] [Indexed: 11/09/2022]
Abstract
Temperature affects almost all aspects of the fish life. To cope with low temperature, fish have evolved the ability of cold acclimation for survival. However, intracellular signaling events underlying cold acclimation in fish remain largely unknown. Here, the formation of cold acclimation in zebrafish embryonic fibroblasts (ZF4) is monitored and the phosphorylation events during the process are investigated through a large-scale quantitative phosphoproteomic approach. In total, 11 474 phosphorylation sites are identified on 4066 proteins and quantified 5772 phosphosites on 2519 proteins. Serine, threonine, and tyrosine (Ser/Thr/Tyr) phosphorylation accounted for 85.5%, 13.3%, and 1.2% of total phosphosites, respectively. Among all phosphosites, 702 phosphosites on 510 proteins show differential regulation during cold acclimation of ZF4 cells. These phosphosites are divided into six clusters according to their dynamic changes during cold exposure. Kinase-substrate prediction reveals that mitogen-activated protein kinase (MAPK) among the kinase groups is predominantly responsible for phosphorylation of these phosphosites. The differentially regulated phosphoproteins are functionally associated with various cellular processes such as regulation of actin cytoskeleton and MAPK signaling pathway. These data enrich the database of protein phosphorylation sites in zebrafish and provide key clues for the elucidation of intracellular signaling networks during cold acclimation of fish.
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Affiliation(s)
- Junjun Yan
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Hubei, Wuhan, 430072, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yong Long
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Hubei, Wuhan, 430072, China
| | - Tong Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Hubei, Wuhan, 430072, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jing Ren
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Hubei, Wuhan, 430072, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Qing Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Hubei, Wuhan, 430072, China
| | - Guili Song
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Hubei, Wuhan, 430072, China
| | - Zongbin Cui
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Hubei, Wuhan, 430072, China.,The Innovative Academy of Seed Design, Chinese Academy of Sciences, Hubei, Wuhan, 430072, China
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22
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Rienecker KDA, Poston RG, Saha RN. Merits and Limitations of Studying Neuronal Depolarization-Dependent Processes Using Elevated External Potassium. ASN Neuro 2020; 12:1759091420974807. [PMID: 33256465 PMCID: PMC7711227 DOI: 10.1177/1759091420974807] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 10/07/2020] [Accepted: 10/22/2020] [Indexed: 01/24/2023] Open
Abstract
Elevated extracellular potassium chloride is widely used to achieve membrane depolarization of cultured neurons. This technique has illuminated mechanisms of calcium influx through L-type voltage sensitive calcium channels, activity-regulated signaling, downstream transcriptional events, and many other intracellular responses to depolarization. However, there is enormous variability in these treatments, including durations from seconds to days and concentrations from 3mM to 150 mM KCl. Differential effects of these variable protocols on neuronal activity and transcriptional programs are underexplored. Furthermore, potassium chloride treatments in vitro are criticized for being poor representatives of in vivo phenomena and are questioned for their effects on cell viability. In this review, we discuss the intracellular consequences of elevated extracellular potassium chloride treatment in vitro, the variability of such treatments in the literature, the strengths and limitations of this tool, and relevance of these studies to brain functions and dysfunctions.
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Affiliation(s)
- Kira D. A. Rienecker
- Department of Molecular and Cell Biology,
School of Natural Sciences, University of California, Merced, United
States
| | - Robert G. Poston
- Department of Molecular and Cell Biology,
School of Natural Sciences, University of California, Merced, United
States
| | - Ramendra N. Saha
- Department of Molecular and Cell Biology,
School of Natural Sciences, University of California, Merced, United
States
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23
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Kuwako KI, Okano H. The LKB1-SIK Pathway Controls Dendrite Self-Avoidance in Purkinje Cells. Cell Rep 2019; 24:2808-2818.e4. [PMID: 30208308 DOI: 10.1016/j.celrep.2018.08.029] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 06/12/2018] [Accepted: 08/08/2018] [Indexed: 02/08/2023] Open
Abstract
Strictly controlled dendrite patterning underlies precise neural connection. Dendrite self-avoidance is a crucial system preventing self-crossing and clumping of dendrites. Although many cell-surface molecules that regulate self-avoidance have been identified, the signaling pathway that orchestrates it remains poorly understood, particularly in mammals. Here, we demonstrate that the LKB1-SIK kinase pathway plays a pivotal role in the self-avoidance of Purkinje cell (PC) dendrites by ensuring dendritic localization of Robo2, a regulator of self-avoidance. LKB1 is activated in developing PCs, and PC-specific deletion of LKB1 severely disrupts the self-avoidance of PC dendrites without affecting gross morphology. SIK1 and SIK2, downstream kinases of LKB1, mediate LKB1-dependent dendrite self-avoidance. Furthermore, loss of LKB1 leads to significantly decreased Robo2 levels in the dendrite but not in the cell body. Finally, restoration of dendritic Robo2 level via overexpression largely rescues the self-avoidance defect in LKB1-deficient PCs. These findings reveal an LKB1-pathway-mediated developmental program that establishes dendrite self-avoidance.
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Affiliation(s)
- Ken-Ichiro Kuwako
- Department of Physiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan.
| | - Hideyuki Okano
- Department of Physiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
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24
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Blatt P, Martin ET, Breznak SM, Rangan P. Post-transcriptional gene regulation regulates germline stem cell to oocyte transition during Drosophila oogenesis. Curr Top Dev Biol 2019; 140:3-34. [PMID: 32591078 DOI: 10.1016/bs.ctdb.2019.10.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
During oogenesis, several developmental processes must be traversed to ensure effective completion of gametogenesis including, stem cell maintenance and asymmetric division, differentiation, mitosis and meiosis, and production of maternally contributed mRNAs, making the germline a salient model for understanding how cell fate transitions are mediated. Due to silencing of the genome during meiotic divisions, there is little instructive transcription, barring a few examples, to mediate these critical transitions. In Drosophila, several layers of post-transcriptional regulation ensure that the mRNAs required for these processes are expressed in a timely manner and as needed during germline differentiation. These layers of regulation include alternative splicing, RNA modification, ribosome production, and translational repression. Many of the molecules and pathways involved in these regulatory activities are conserved from Drosophila to humans making the Drosophila germline an elegant model for studying the role of post-transcriptional regulation during stem cell differentiation and meiosis.
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Affiliation(s)
- Patrick Blatt
- Department of Biological Sciences/RNA Institute, University at Albany SUNY, Albany, NY, United States; University at Albany SUNY, Albany, NY, United States
| | - Elliot T Martin
- Department of Biological Sciences/RNA Institute, University at Albany SUNY, Albany, NY, United States; University at Albany SUNY, Albany, NY, United States
| | - Shane M Breznak
- Department of Biological Sciences/RNA Institute, University at Albany SUNY, Albany, NY, United States; University at Albany SUNY, Albany, NY, United States
| | - Prashanth Rangan
- Department of Biological Sciences/RNA Institute, University at Albany SUNY, Albany, NY, United States; University at Albany SUNY, Albany, NY, United States.
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25
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Salt-inducible kinase 1 regulates bone anabolism via the CRTC1-CREB-Id1 axis. Cell Death Dis 2019; 10:826. [PMID: 31672960 PMCID: PMC6823377 DOI: 10.1038/s41419-019-1915-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 07/21/2019] [Accepted: 08/20/2019] [Indexed: 12/11/2022]
Abstract
New bone anabolic agents for the effective treatment of bone metabolic diseases like osteoporosis are of high clinical demand. In the present study, we reveal the function of salt-inducible kinase 1 (SIK1) in regulating osteoblast differentiation. Gene knockdown of SIK1 but not of SIK2 or SIK3 expression in primary preosteoblasts increased osteoblast differentiation and bone matrix mineralization. SIK1 also regulated the proliferation of osteoblastic precursor cells in osteogenesis. This negative control of osteoblasts required the catalytic activity of SIK1. SIK1 phosphorylated CREB regulated transcription coactivator 1 (CRTC1), preventing CRTC1 from enhancing CREB transcriptional activity for the expression of osteogenic genes like Id1. Furthermore, SIK1 knockout (KO) mice had higher bone mass, osteoblast number, and bone formation rate versus littermate wild-type (WT) mice. Preosteoblasts from SIK1 KO mice showed more osteoblastogenic potential than did WT cells, whereas osteoclast generation among KO and WT precursors was indifferent. In addition, bone morphogenic protein 2 (BMP2) suppressed both SIK1 expression as well as SIK1 activity by protein kinase A (PKA)–dependent mechanisms to stimulate osteogenesis. Taken together, our results indicate that SIK1 is a key negative regulator of preosteoblast proliferation and osteoblast differentiation and that the repression of SIK1 is crucial for BMP2 signaling for osteogenesis. Therefore, we propose SIK1 to be a useful therapeutic target for the development of bone anabolic strategies.
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26
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Abstract
Mg2+ is an essential ion for the cell but whether it can act as a bona fide second messenger has long been questioned. A recent study supports this hypothesis and shows a signalling role for Mg2+ in GABA-mediated neuronal maturation.
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27
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Carrano N, Samaddar T, Brunialti E, Franchini L, Marcello E, Ciana P, Mauceri D, Di Luca M, Gardoni F. The Synaptonuclear Messenger RNF10 Acts as an Architect of Neuronal Morphology. Mol Neurobiol 2019; 56:7583-7593. [DOI: 10.1007/s12035-019-1631-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 04/29/2019] [Indexed: 10/26/2022]
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28
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Xu Q, Liu YY, Wang X, Tan GH, Li HP, Hulbert SW, Li CY, Hu CC, Xiong ZQ, Xu X, Jiang YH. Autism-associated CHD8 deficiency impairs axon development and migration of cortical neurons. Mol Autism 2018; 9:65. [PMID: 30574290 PMCID: PMC6299922 DOI: 10.1186/s13229-018-0244-2] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Accepted: 11/15/2018] [Indexed: 12/20/2022] Open
Abstract
Background Mutations in CHD8, chromodomain helicase DNA-binding protein 8, are among the most replicated and common findings in genetic studies of autism spectrum disorder (ASD). The CHD8 protein is believed to act as a transcriptional regulator by remodeling chromatin structure and recruiting histone H1 to target genes. The mechanism by which deficiency of CHD8 causes ASD has not been fully elucidated. Methods We examined the expression of CHD8 in human and mouse brains using both immunohistochemistry and RNA in situ hybridization. We performed in utero electroporation, neuronal culture, and biochemical analysis using RNAi to examine the functional consequences of CHD8 deficiency. Results We discovered that CHD8 is expressed highly in neurons and at low levels in glia cells in both humans and mice. Specifically, CHD8 is localized predominately in the nucleus of both MAP2 and parvalbumin-positive neurons. In the developing mouse brain, expression of Chd8 peaks from E16 to E18 and then decreases significantly at P14 to adulthood. Knockdown of Chd8 results in reduced axon and dendritic growth, disruption of axon projections to the contralateral cortex, and delayed neuronal migration at E18.5 which recovers by P3 and P7. Conclusion Our findings indicate an important role for CHD8 in dendritic and axon development and neuronal migration and thus offer novel insights to further dissect the underlying molecular and circuit mechanisms of ASD caused by CHD8 deficiency.
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Affiliation(s)
- Qiong Xu
- Department of Child Health Care, Children’s Hospital of Fudan University, Shanghai, 201102 China
- Department of Pediatrics, Duke University School of Medicine, Durham, 27710 NC USA
| | - Yuan-yuan Liu
- Guangxi Key Laboratory of Regenerative Medicine & Guangxi Collaborative Innovation Center for Biomedicine, School of Preclinical Medicine, Guangxi Medical University, Nanning, 530021 Guangxi China
| | - Xiaoming Wang
- Department of Pediatrics, Duke University School of Medicine, Durham, 27710 NC USA
| | - Guo-he Tan
- Guangxi Key Laboratory of Regenerative Medicine & Guangxi Collaborative Innovation Center for Biomedicine, School of Preclinical Medicine, Guangxi Medical University, Nanning, 530021 Guangxi China
| | - Hui-ping Li
- Department of Child Health Care, Children’s Hospital of Fudan University, Shanghai, 201102 China
| | - Samuel W. Hulbert
- Department of Neurobiology, Duke University School of Medicine, Durham, 27710 NC USA
| | - Chun-yang Li
- Department of Child Health Care, Children’s Hospital of Fudan University, Shanghai, 201102 China
| | - Chun-chun Hu
- Department of Child Health Care, Children’s Hospital of Fudan University, Shanghai, 201102 China
| | - Zhi-qi Xiong
- Institute of Neuroscience & State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Xiu Xu
- Department of Child Health Care, Children’s Hospital of Fudan University, Shanghai, 201102 China
| | - Yong-hui Jiang
- Department of Pediatrics, Duke University School of Medicine, Durham, 27710 NC USA
- Department of Neurobiology, Duke University School of Medicine, Durham, 27710 NC USA
- Program in Genetics and Genomics, Duke University School of Medicine, Durham, 27710 NC USA
- Cellular Molecular Biology, Duke University School of Medicine, Durham, 27710 NC USA
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29
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Abstract
The brain undergoes several changes at structural, molecular, and cellular levels leading to alteration in its functions and these processes are primarily maintained by proteostasis in cells. However, an imbalance in proteostasis due to the abnormal accumulation of protein aggregates induces endoplasmic reticulum (ER) stress. This event, in turn, activate the unfolded protein response; however, in most neurodegenerative conditions and brain injury, an uncontrolled unfolded protein response elicits memory dysfunction. Although the underlying signaling mechanism for impairment of memory function following induction of ER stress remains elusive, recent studies have highlighted that inactivation of a transcription factor, CREB, which is essential for synaptic function and memory formation, plays an essential role for ER stress-induced synaptic and memory dysfunction. In this review, current studies and most updated view on how ER stress affects memory function in both physiological and pathological conditions will be highlighted.
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Affiliation(s)
- Nilkantha Sen
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA, USA
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30
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Kumagai A, Sasaki T, Matsuoka K, Abe M, Tabata T, Itoh Y, Fuchino H, Wugangerile S, Suga M, Yamaguchi T, Kawahara H, Nagaoka Y, Kawabata K, Furue MK, Takemori H. Monitoring of glutamate-induced excitotoxicity by mitochondrial oxygen consumption. Synapse 2018; 73:e22067. [PMID: 30120794 DOI: 10.1002/syn.22067] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 08/07/2018] [Accepted: 08/14/2018] [Indexed: 12/14/2022]
Abstract
Dysfunction of mitochondrial activity is often associated with the onset and progress of neurodegenerative diseases. Membrane depolarization induced by Na+ influx increases intracellular Ca2+ levels in neurons, which upregulates mitochondrial activity. However, overlimit of Na+ influx and its prolonged retention ultimately cause excitotoxicity leading to neuronal cell death. To return the membrane potential to the normal level, Na+ /K+ -ATPase exchanges intracellular Na+ with extracellular K+ by consuming a large amount of ATP. This is a reason why mitochondria are important for maintaining neurons. In addition, astrocytes are thought to be important for supporting neighboring neurons by acting as energy providers and eliminators of excessive neurotransmitters. In this study, we examined the meaning of changes in the mitochondrial oxygen consumption rate (OCR) in primary mouse neuronal populations. By varying the medium constituents and using channel modulators, we found that pyruvate rather than lactate supported OCR levels and conferred on neurons resistance to glutamate-mediated excitotoxicity. Under a pyruvate-restricted condition, our OCR monitoring could detect excitotoxicity induced by glutamate at only 10 μM. The OCR monitoring also revealed the contribution of the N-methyl-D-aspartate receptor and Na+ /K+ -ATPase to the toxicity, which allowed evaluating spontaneous excitation. In addition, the OCR monitoring showed that astrocytes preferentially used glutamate, not glutamine, for a substrate of the tricarboxylic acid cycle. This mechanism may be coupled with astrocyte-dependent protection of neurons from glutamate-mediated excitotoxicity. These results suggest that OCR monitoring would provide a new powerful tool to analyze the mechanisms underlying neurotoxicity and protection against it.
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Affiliation(s)
- Ayako Kumagai
- Cell Signaling and Metabolic Disease, National Institute of Biomedical Innovation, Health and Nutrition, Osaka, Japan.,Life Science and Biotechnology, Chemistry, Materials and Bioengineering, Kansai University, Osaka, Japan
| | - Tsutomu Sasaki
- Department of Neurology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Kenta Matsuoka
- Laboratory for Biological Information Processing, Graduate School of, Science and Engineering, University of Toyama, Toyama, Japan
| | - Masayoshi Abe
- Laboratory for Biological Information Processing, Graduate School of, Science and Engineering, University of Toyama, Toyama, Japan
| | - Toshihide Tabata
- Laboratory for Biological Information Processing, Graduate School of, Science and Engineering, University of Toyama, Toyama, Japan
| | - Yumi Itoh
- Cell Signaling and Metabolic Disease, National Institute of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Hiroyuki Fuchino
- Research Center for Medicinal Plant Resources, Tukuba Division, National Institutes of Biomedical Innovation, Health and Nutrition, Tsukuba, Japan
| | - Sartagul Wugangerile
- Cell Signaling and Metabolic Disease, National Institute of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Mika Suga
- Stem Cell Cultures, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Tomoko Yamaguchi
- Stem Cell Regulation, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Hidehisa Kawahara
- Life Science and Biotechnology, Chemistry, Materials and Bioengineering, Kansai University, Osaka, Japan
| | - Yasuo Nagaoka
- Life Science and Biotechnology, Chemistry, Materials and Bioengineering, Kansai University, Osaka, Japan
| | - Kenji Kawabata
- Stem Cell Regulation, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Miho Kusuda Furue
- Stem Cell Cultures, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Hiroshi Takemori
- Cell Signaling and Metabolic Disease, National Institute of Biomedical Innovation, Health and Nutrition, Osaka, Japan.,Faculty of Engineering, Depaetment of Chemistry and Biomolecular Science, Gifu University, Gifu, Japan
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31
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Calmodulin shuttling mediates cytonuclear signaling to trigger experience-dependent transcription and memory. Nat Commun 2018; 9:2451. [PMID: 29934532 PMCID: PMC6015085 DOI: 10.1038/s41467-018-04705-8] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 05/14/2018] [Indexed: 12/18/2022] Open
Abstract
Learning and memory depend on neuronal plasticity originating at the synapse and requiring nuclear gene expression to persist. However, how synapse-to-nucleus communication supports long-term plasticity and behavior has remained elusive. Among cytonuclear signaling proteins, γCaMKII stands out in its ability to rapidly shuttle Ca2+/CaM to the nucleus and thus activate CREB-dependent transcription. Here we show that elimination of γCaMKII prevents activity-dependent expression of key genes (BDNF, c-Fos, Arc), inhibits persistent synaptic strengthening, and impairs spatial memory in vivo. Deletion of γCaMKII in adult excitatory neurons exerts similar effects. A point mutation in γCaMKII, previously uncovered in a case of intellectual disability, selectively disrupts CaM sequestration and CaM shuttling. Remarkably, this mutation is sufficient to disrupt gene expression and spatial learning in vivo. Thus, this specific form of cytonuclear signaling plays a key role in learning and memory and contributes to neuropsychiatric disease. Activity-dependent gene expression is thought to involve translocation of Ca2+/calmodulin (CaM) to the nucleus. Here, the authors examine a translocation-deficient mutant of γCaMKII, a Ca2+/CaM shuttle protein, to show that translocation of Ca2+/CaM is required for memory and synaptic plasticity.
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32
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Wilson EN, Abela AR, Do Carmo S, Allard S, Marks AR, Welikovitch LA, Ducatenzeiler A, Chudasama Y, Cuello AC. Intraneuronal Amyloid Beta Accumulation Disrupts Hippocampal CRTC1-Dependent Gene Expression and Cognitive Function in a Rat Model of Alzheimer Disease. ACTA ACUST UNITED AC 2018; 27:1501-1511. [PMID: 26759481 DOI: 10.1093/cercor/bhv332] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
In Alzheimer disease (AD), the accumulation of amyloid beta (Aβ) begins decades before cognitive symptoms and progresses from intraneuronal material to extracellular plaques. To date, however, the precise mechanism by which the early buildup of Aβ peptides leads to cognitive dysfunction remains unknown. Here, we investigate the impact of the early Aβ accumulation on temporal and frontal lobe dysfunction. We compared the performance of McGill-R-Thy1-APP transgenic AD rats with wild-type littermate controls on a visual discrimination task using a touchscreen operant platform. Subsequently, we conducted studies to establish the biochemical and molecular basis for the behavioral alterations. It was found that the presence of intraneuronal Aβ caused a severe associative learning deficit in the AD rats. This coincided with reduced nuclear translocation and genomic occupancy of the CREB co-activator, CRTC1, and decreased production of synaptic plasticity-associated transcripts Arc, c-fos, Egr1, and Bdnf. Thus, blockade of CRTC1-dependent gene expression in the early, preplaque phase of AD-like pathology provides a molecular basis for the cognitive deficits that figure so prominently in early AD.
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Affiliation(s)
- Edward N Wilson
- Department of Pharmacology and Therapeutics, McGill University, Montreal, QCCanadaH3G 1Y6
| | - Andrew R Abela
- Department of Psychology, McGill University, Montreal, QCCanadaH3A 1B1
| | - Sonia Do Carmo
- Department of Pharmacology and Therapeutics, McGill University, Montreal, QCCanadaH3G 1Y6
| | - Simon Allard
- Department of Pharmacology and Therapeutics, McGill University, Montreal, QCCanadaH3G 1Y6
| | - Adam R Marks
- Department of Pharmacology and Therapeutics, McGill University, Montreal, QCCanadaH3G 1Y6
| | - Lindsay A Welikovitch
- Department of Pharmacology and Therapeutics, McGill University, Montreal, QCCanadaH3G 1Y6
| | - Adriana Ducatenzeiler
- Department of Pharmacology and Therapeutics, McGill University, Montreal, QCCanadaH3G 1Y6
| | - Yogita Chudasama
- Department of Psychology, McGill University, Montreal, QC Canada H3A 1B1.,Current address: National Institute of Mental Health, National Institutes of Health, Bethesda, MD 20892, USA
| | - A Claudio Cuello
- Department of Pharmacology and Therapeutics, McGill University, Montreal, QC Canada H3G 1Y6.,Department of Anatomy and Cell Biology.,Department of Neurology and Neurosurgery, McGill University, Montreal, QC Canada
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Uchida S, Shumyatsky GP. Epigenetic regulation of Fgf1 transcription by CRTC1 and memory enhancement. Brain Res Bull 2018; 141:3-12. [PMID: 29477835 PMCID: PMC6128695 DOI: 10.1016/j.brainresbull.2018.02.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 01/30/2018] [Accepted: 02/20/2018] [Indexed: 01/06/2023]
Abstract
Recent evidence demonstrates that epigenetic regulation of gene transcription is critically involved in learning and memory. Here, we discuss the role of histone acetylation and DNA methylation, which are two best understood epigenetic processes in memory processes. More specifically, we focus on learning-strength-dependent changes in chromatin on the fibroblast growth factor 1 (Fgf1) gene and on the molecular events that modulate regulation of Fgf1 transcription, required for memory enhancement, with the specific focus on CREB-regulated transcription coactivator 1 (CRTC1).
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Affiliation(s)
- Shusaku Uchida
- Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan
| | - Gleb P Shumyatsky
- Department of Genetics, Rutgers University, 145 Bevier Rd., Piscataway, NJ 08854, USA.
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Gao WW, Tang HMV, Cheng Y, Chan CP, Chan CP, Jin DY. Suppression of gluconeogenic gene transcription by SIK1-induced ubiquitination and degradation of CRTC1. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2018; 1861:211-223. [PMID: 29408765 DOI: 10.1016/j.bbagrm.2018.01.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 01/23/2018] [Accepted: 01/29/2018] [Indexed: 12/21/2022]
Abstract
CRTCs are a group of three transcriptional coactivators required for CREB-dependent transcription. CREB and CRTCs are critically involved in the regulation of various biological processes such as cell proliferation, metabolism, learning and memory. However, whether CRTC1 efficiently induces gluconeogenic gene expression and how CRTC1 is regulated by upstream kinase SIK1 remain to be understood. In this work, we demonstrated SIK1-induced phosphorylation, ubiquitination and degradation of CRTC1 in the context of the regulation of gluconeogenesis. CRTC1 protein was destabilized by SIK1 but not SIK2 or SIK3. This effect was likely mediated by phosphorylation at S155, S167, S188 and S346 residues of CRTC1 followed by K48-linked polyubiquitination and proteasomal degradation. Expression of gluconeogenic genes such as that coding for phosphoenolpyruvate carboxykinase was stimulated by CRTC1, but suppressed by SIK1. Depletion of CRTC1 protein also blocked forskolin-induced gluconeogenic gene expression, knockdown or pharmaceutical inhibition of SIK1 had the opposite effect. Finally, SIK1-induced ubiquitination of CRTC1 was mediated by RFWD2 ubiquitin ligase at a site not equivalent to K628 in CRTC2. Taken together, our work reveals a regulatory circuit in which SIK1 suppresses gluconeogenic gene transcription by inducing ubiquitination and degradation of CRTC1. Our findings have implications in the development of new antihyperglycemic agents.
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Affiliation(s)
- Wei-Wei Gao
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong; State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong
| | - Hei-Man Vincent Tang
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong; State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong
| | - Yun Cheng
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong; State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong
| | - Ching-Ping Chan
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong; State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong
| | - Chi-Ping Chan
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong; State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong.
| | - Dong-Yan Jin
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong; State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong.
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35
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Marcello E, Di Luca M, Gardoni F. Synapse-to-nucleus communication: from developmental disorders to Alzheimer's disease. Curr Opin Neurobiol 2018; 48:160-166. [PMID: 29316492 DOI: 10.1016/j.conb.2017.12.017] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 12/17/2017] [Accepted: 12/22/2017] [Indexed: 11/28/2022]
Abstract
In the last decade several synaptonuclear protein messengers including Jacob, CRTC1, AIDA-1, ProSaP2/Shank3 and RNF10 have been identified and characterized as key players for modulation of synaptic transmission and synaptic plasticity. Activation of excitatory glutamatergic synapses leads to their shuttling from the synapse to the nucleus, mostly importin-mediated, and subsequent regulation of gene transcription needed for long lasting modifications of synaptic function. Accordingly, increasing evidences show that alterations of the activity of synaptonuclear messengers are correlated to synaptic failure as observed in different synaptopathies. Specifically, recent studies demonstrate that the modulation of the activity of synaptonuclear messengers could represent a novel molecular target in the pathogenesis of both neurodevelopmental disorders and neurodegenerative diseases such as Alzheimer's disease.
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Affiliation(s)
- Elena Marcello
- Department of Pharmacological and Biomolecular Sciences, University of Milano, Milan, Italy
| | - Monica Di Luca
- Department of Pharmacological and Biomolecular Sciences, University of Milano, Milan, Italy.
| | - Fabrizio Gardoni
- Department of Pharmacological and Biomolecular Sciences, University of Milano, Milan, Italy
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CRTC1 mediates preferential transcription at neuronal activity-regulated CRE/TATA promoters. Sci Rep 2017; 7:18004. [PMID: 29269871 PMCID: PMC5740062 DOI: 10.1038/s41598-017-18215-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Accepted: 11/27/2017] [Indexed: 01/03/2023] Open
Abstract
Gene expression mediated by the transcription factor cAMP-responsive element-binding protein (CREB) is essential for a wide range of brain processes. The transcriptional coactivartor CREB-regulated transcription coactivator-1 (CRTC1) is required for efficient induction of CREB target genes during neuronal activity. However, the mechanisms regulating induction of specific CREB/CRTC1-dependent genes during neuronal activity remain largely unclear. Here, we investigated the molecular mechanisms regulating activity-dependent gene transcription upon activation of the CREB/CRTC1 signaling pathway in neurons. Depolarization and cAMP signals induce preferential transcription of activity-dependent genes containing promoters with proximal CRE/TATA sequences, such as c-fos, Dusp1, Nr4a1, Nr4a2 and Ptgs2, but not genes with proximal CRE/TATA-less promoters (e.g. Nr4a3, Presenilin-1 and Presenilin-2). Notably, biochemical and chromatin immunoprecipitation analyses reveal constitutive binding of CREB to target gene promoters in the absence of neuronal activity, whereas recruitment of CRTC1 to proximal CRE/TATA promoters depends on neuronal activity. Neuronal activity induces rapid CRTC1 dephosphorylation, nuclear translocation and binding to endogenous CREB. These results indicate that neuronal activity induces a preferential binding of CRTC1 to the transcriptional complex in CRE/TATA-containing promoters to engage activity-dependent transcription in neurons.
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Rossetti C, Sciarra D, Petit JM, Eap CB, Halfon O, Magistretti PJ, Boutrel B, Cardinaux JR. Gender-specific alteration of energy balance and circadian locomotor activity in the Crtc1 knockout mouse model of depression. Transl Psychiatry 2017; 7:1269. [PMID: 29217834 PMCID: PMC5802703 DOI: 10.1038/s41398-017-0023-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 07/28/2017] [Accepted: 09/07/2017] [Indexed: 02/04/2023] Open
Abstract
Obesity and depression are major public health concerns, and there is increasing evidence that they share etiological mechanisms. CREB-regulated transcription coactivator 1 (CRTC1) participates in neurobiological pathways involved in both mood and energy balance regulation. Crtc1 -/- mice rapidly develop a depressive-like and obese phenotype in early adulthood, and are therefore a relevant animal model to explore possible common mechanisms underlying mood disorders and obesity. Here, the obese phenotype of male and female Crtc1 -/- mice was further characterized by investigating CRTC1's role in the homeostatic and hedonic regulation of food intake, as well as its influence on daily locomotor activity. Crtc1 -/- mice showed a strong gender difference in the homeostatic regulation of energy balance. Mutant males were hyperphagic and rapidly developed obesity on normal chow diet, whereas Crtc1 -/- females exhibited mild late-onset obesity without hyperphagia. Overeating of mutant males was accompanied by alterations in the expression of several orexigenic and anorexigenic hypothalamic genes, thus confirming a key role of CRTC1 in the central regulation of food intake. No alteration in preference and conditioned response for saccharine was observed in Crtc1 -/- mice, suggesting that mutant males' hyperphagia was not due to an altered hedonic regulation of food intake. Intriguingly, mutant males exhibited a hyperphagic behavior only during the resting (diurnal) phase of the light cycle. This abnormal feeding behavior was associated with a higher diurnal locomotor activity indicating that the lack of CRTC1 may affect circadian rhythmicity. Collectively, these findings highlight the male-specific involvement of CRTC1 in the central control of energy balance and circadian locomotor activity.
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Affiliation(s)
- Clara Rossetti
- 0000 0001 2165 4204grid.9851.5Center for Psychiatric Neuroscience, Department of Psychiatry, University Medical Center, University of Lausanne, Prilly, Switzerland ,0000 0001 2165 4204grid.9851.5Service of Child and Adolescent Psychiatry, Department of Psychiatry, University Medical Center, University of Lausanne, Lausanne, Switzerland
| | - Daniel Sciarra
- 0000 0001 2165 4204grid.9851.5Center for Psychiatric Neuroscience, Department of Psychiatry, University Medical Center, University of Lausanne, Prilly, Switzerland
| | - Jean-Marie Petit
- 0000 0001 2165 4204grid.9851.5Center for Psychiatric Neuroscience, Department of Psychiatry, University Medical Center, University of Lausanne, Prilly, Switzerland ,0000000121839049grid.5333.6Laboratory of Neuroenergetics and Cellular Dynamics, Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Chin B. Eap
- 0000 0001 2165 4204grid.9851.5Unit of Pharmacogenetics and Clinical Psychopharmacology, Center for Psychiatric Neuroscience, Department of Psychiatry, University Medical Center, University of Lausanne, Prilly, Switzerland ,0000 0001 2322 4988grid.8591.5School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Geneva, Switzerland
| | - Olivier Halfon
- 0000 0001 2165 4204grid.9851.5Service of Child and Adolescent Psychiatry, Department of Psychiatry, University Medical Center, University of Lausanne, Lausanne, Switzerland
| | - Pierre J. Magistretti
- 0000 0001 2165 4204grid.9851.5Center for Psychiatric Neuroscience, Department of Psychiatry, University Medical Center, University of Lausanne, Prilly, Switzerland ,0000000121839049grid.5333.6Laboratory of Neuroenergetics and Cellular Dynamics, Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland ,0000 0001 1926 5090grid.45672.32Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Benjamin Boutrel
- 0000 0001 2165 4204grid.9851.5Center for Psychiatric Neuroscience, Department of Psychiatry, University Medical Center, University of Lausanne, Prilly, Switzerland ,0000 0001 2165 4204grid.9851.5Service of Child and Adolescent Psychiatry, Department of Psychiatry, University Medical Center, University of Lausanne, Lausanne, Switzerland
| | - Jean-René Cardinaux
- Center for Psychiatric Neuroscience, Department of Psychiatry, University Medical Center, University of Lausanne, Prilly, Switzerland. .,Service of Child and Adolescent Psychiatry, Department of Psychiatry, University Medical Center, University of Lausanne, Lausanne, Switzerland.
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SAP97 Binding Partner CRIPT Promotes Dendrite Growth In Vitro and In Vivo. eNeuro 2017; 4:eN-NWR-0175-17. [PMID: 29218323 PMCID: PMC5718245 DOI: 10.1523/eneuro.0175-17.2017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 10/30/2017] [Accepted: 10/30/2017] [Indexed: 01/15/2023] Open
Abstract
The dendritic tree is a key determinant of neuronal information processing. In the motor system, the dendritic tree of spinal cord neurons undergoes dramatic remodeling in an activity-dependent manner during early postnatal life. This leads to the proper segmental spinal cord connectivity that subserves normal locomotor behavior. One molecular system driving the establishment of dendrite architecture of mammalian motor neurons relies on AMPA receptors (AMPA-Rs) assembled with the GluA1 subunit, and this occurs in an NMDA receptor (NMDA-R)-independent manner. The dendrite growth promoting activity of GluA1-containing AMPA-Rs depends on its intracellular binding partner, SAP97, and SAP97's PDZ3 domain. We show here that cysteine-rich interactor of PDZ3 (CRIPT) is a bona fide SAP97 PDZ3-domain binding partner, localizes to synapses with GluA1 and SAP97 along the dendritic tree, and is a determinant of the dendritic growth of mammalian spinal cord neurons. We further show that CRIPT has a well-conserved ortholog in the nematode, Caenorhabditis elegans, and animals lacking CRIPT display decreased dendrite branching of the well-studied PVD neuron in vivo. The lack of CRIPT leads to a selective defect in touch perception, and this is rescued by expression of wild-type (WT) human CRIPT (hCRIPT) in the nervous system. This work brings new light into the molecular machinery that drives dendritic growth during development and may prove relevant to the promotion of nervous system plasticity following insult.
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Saura CA, Cardinaux JR. Emerging Roles of CREB-Regulated Transcription Coactivators in Brain Physiology and Pathology. Trends Neurosci 2017; 40:720-733. [PMID: 29097017 DOI: 10.1016/j.tins.2017.10.002] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 09/27/2017] [Accepted: 10/05/2017] [Indexed: 12/11/2022]
Abstract
The brain has the ability to sense, coordinate, and respond to environmental changes through biological processes involving activity-dependent gene expression. cAMP-response element binding protein (CREB)-regulated transcription coactivators (CRTCs) have recently emerged as novel transcriptional regulators of essential biological functions, while their deregulation is linked to age-related human diseases. In the brain, CRTCs are unique signaling factors that act as sensors and integrators of hormonal, metabolic, and neural signals contributing to brain plasticity and brain-body communication. In this review, we focus on the regulatory mechanisms and functions of CRTCs in brain metabolism, lifespan, circadian rhythm, and synaptic mechanisms underlying memory and emotion. We also discuss how CRTCs deregulation in cognitive and emotional disorders may provide the basis for potential clinical and therapeutic applications in neurodegenerative and psychiatric diseases.
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Affiliation(s)
- Carlos A Saura
- Institut de Neurociències, Department de Bioquímica i Biologia Molecular, Centro de Investigación Biomédica en Red Enfermedades Neurodegenerativas (CIBERNED), Universitat Autònoma de Barcelona, Barcelona, Spain.
| | - Jean-René Cardinaux
- Center for Psychiatric Neuroscience and Service of Child and Adolescent Psychiatry, Department of Psychiatry, University Medical Center, University of Lausanne, Switzerland.
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40
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Motaghinejad O, Motaghinejad M, Motevalian M, Rahimi-Sharbaf F, Beiranvand T. The effect of maternal forced exercise on offspring pain perception, motor activity and anxiety disorder: the role of 5-HT2 and D2 receptors and CREB gene expression. J Exerc Rehabil 2017; 13:514-525. [PMID: 29114525 PMCID: PMC5667597 DOI: 10.12965/jer.1734992.496] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Accepted: 09/13/2017] [Indexed: 12/16/2022] Open
Abstract
The effect of maternal forced exercise on central disorders in offsprings has been shown but the mechanism is still unclear. In this study, the role of 5-HT2 and D2 receptors in neuroprotective effects of maternal forced exercise on offspring neurodevelopment and neurobehavioral symptoms is evaluated. Sixty pregnant rats were trained by forced exercise and some behavioral and molecular aspects in their offspring were evaluated in presence of 5-HT2 and D2 receptors agonists and antagonists. The results showed that maternal forced exercise causes increase of pain tolerability and increase latency of pain perception in offspring in hot plate test, writhing test and tail flick test. Also maternal forced exercise causes decrease of depression and anxiety like behavior in offsprings. On the other hand, treatment of mothers by forced exercise in combination with 5-HT2 and D2 receptor antagonists inhibited the protective effects of forced exercise and cause disturbance in pain perception and tolerability and increase depression and anxiety in offsprings. Also expression of cyclic AMP response element binding protein (CREB) was changed in all experimental groups. In conclusion, our data suggested that maternal forced exercise causes neurobehavioral protective effect on offsprings and this effect might probably be mediated by 5-HT2 and D2 receptors and activation of CREB gene expression.
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Affiliation(s)
- Ozra Motaghinejad
- Razi Drug Research Center and Department of Pharmacology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Majid Motaghinejad
- Razi Drug Research Center and Department of Pharmacology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Manijeh Motevalian
- Razi Drug Research Center and Department of Pharmacology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | | | - Tabassom Beiranvand
- Razi Drug Research Center and Department of Pharmacology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
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41
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Activity-Dependent Dynamics of the Transcription Factor of cAMP-Response Element Binding Protein in Cortical Neurons Revealed by Single-Molecule Imaging. J Neurosci 2017; 37:1-10. [PMID: 28053025 DOI: 10.1523/jneurosci.0943-16.2016] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 10/25/2016] [Accepted: 10/27/2016] [Indexed: 01/03/2023] Open
Abstract
Transcriptional regulation is crucial for neuronal activity-dependent processes that govern neuronal circuit formation and synaptic plasticity. An intriguing question is how neuronal activity influences the spatiotemporal interactions between transcription factors and their target sites. Here, using a single-molecule imaging technique, we investigated the activity dependence of DNA binding and dissociation events of cAMP-response element binding protein (CREB), a principal factor in activity-dependent transcription, in mouse cortical neurons. To visualize CREB at the single-molecule level, fluorescent-tagged CREB in living dissociated cortical neurons was observed by highly inclined and laminated optical sheet microscopy. We found that a significant fraction of CREB spots resided in the restricted locations in the nucleus for several seconds (dissociation rate constant: 0.42 s-1). In contrast, two mutant CREBs, which cannot bind to the cAMP-response element, scarcely exhibited long-term residence. To test the possibility that CREB dynamics depends on neuronal activity, pharmacological treatments and an optogenetic method involving channelrhodopsin-2 were applied to cultured cortical neurons. Increased neuronal activity did not appear to influence the residence time of CREB spots, but markedly increased the number of restricted locations (hot spots) where CREB spots frequently resided with long residence times (>1 s). These results suggest that neuronal activity promotes CREB-dependent transcription by increasing the frequency of CREB binding to highly localized genome locations. SIGNIFICANCE STATEMENT The transcription factor, cAMP response element-binding protein (CREB) is known to regulate gene expression in neuronal activity-dependent processes. However, its spatiotemporal interactions with the genome remain unknown. Single-molecule imaging in cortical neurons revealed that fluorescent-tagged CREB spots frequently reside at fixed nuclear locations in the time range of several seconds. Neuronal activity had little effect on the CREB residence time, but increased the rapid and frequent reappearance of long-residence CREB spots at the same nuclear locations. Thus, activity-dependent transcription is attributable to frequent binding of CREB to specific genome loci.
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42
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Uchida S, Shumyatsky GP. Synaptically Localized Transcriptional Regulators in Memory Formation. Neuroscience 2017; 370:4-13. [PMID: 28733211 DOI: 10.1016/j.neuroscience.2017.07.023] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 07/07/2017] [Accepted: 07/10/2017] [Indexed: 01/07/2023]
Abstract
At the neuronal cell level, long-term memory formation emerges from interactions between initial activity-dependent molecular changes at the synapse and subsequent regulation of gene transcription in the nucleus. This in turn leads to strengthening of the connections back at the synapse that received the initial signal. However, the mechanisms through which this synapse-to-nucleus molecular exchange occurs remain poorly understood. Here we discuss recent studies that delineate nucleocytoplasmic transport of a special class of synaptically localized transcriptional regulators that upon receiving initial external signal by the synapse move to the nucleus to modulate gene transcription.
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Affiliation(s)
- Shusaku Uchida
- Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan
| | - Gleb P Shumyatsky
- Department of Genetics, Rutgers University, 145 Bevier Rd., Piscataway, NJ 08854, USA.
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43
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Evans MD, Tufo C, Dumitrescu AS, Grubb MS. Myosin II activity is required for structural plasticity at the axon initial segment. Eur J Neurosci 2017; 46:1751-1757. [PMID: 28452088 PMCID: PMC5573965 DOI: 10.1111/ejn.13597] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 03/29/2017] [Accepted: 04/20/2017] [Indexed: 12/21/2022]
Abstract
In neurons, axons possess a molecularly defined and highly organised proximal region – the axon initial segment (AIS) – that is a key regulator of both electrical excitability and cellular polarity. Despite existing as a large, dense structure with specialised cytoskeletal architecture, the AIS is surprisingly plastic, with sustained alterations in neuronal activity bringing about significant alterations to its position, length or molecular composition. However, although the upstream activity‐dependent signalling pathways that lead to such plasticity have begun to be elucidated, the downstream mechanisms that produce structural changes at the AIS are completely unknown. Here, we use dissociated cultures of rat hippocampus to show that two forms of AIS plasticity in dentate granule cells – long‐term relocation, and more rapid shortening – are completely blocked by treatment with blebbistatin, a potent and selective myosin II ATPase inhibitor. These data establish a link between myosin II and AIS function, and suggest that myosin II's primary role at the structure may be to effect activity‐dependent morphological alterations.
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Affiliation(s)
- Mark D Evans
- Centre for Developmental Neurobiology, King's College London, London, SE1 1UL, UK
| | - Candida Tufo
- Centre for Developmental Neurobiology, King's College London, London, SE1 1UL, UK
| | - Adna S Dumitrescu
- Centre for Developmental Neurobiology, King's College London, London, SE1 1UL, UK
| | - Matthew S Grubb
- Centre for Developmental Neurobiology, King's College London, London, SE1 1UL, UK.,FENS-Kavli Network of Excellence, Europe-wide
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44
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Pinto Brod LM, Fronza MG, Vargas JP, Lüdtke DS, Brüning CA, Savegnago L. Modulation of PKA, PKC, CAMKII, ERK 1/2 pathways is involved in the acute antidepressant-like effect of (octylseleno)-xylofuranoside (OSX) in mice. Psychopharmacology (Berl) 2017; 234:717-725. [PMID: 27995278 DOI: 10.1007/s00213-016-4505-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 12/09/2016] [Indexed: 12/13/2022]
Abstract
RATIONALE (Octylseleno)-xylofuranoside (OSX) is an organoselenium compound from the class of alkylseleno carbohydrates possessing a C8 alkyl chain. Members of this class of organoselenium compounds have promising pharmacological activities, among them are antioxidant and acute antidepressant-like activities with the involvement of monoaminergic system, as previously presented by our research group. OBJECTIVE The objective of the study was to investigate the possible involvement of cellular signalling pathways in the antidepressant-like effect caused by OSX (0.01 mg/kg, oral route (p.o.) by gavage) in the tail suspension test (TST) in mice. METHODS Mice were treated by intracerebroventricular (i.c.v.) injection either with vehicle or with H-89 (1 μg/site i.c.v., an inhibitor of protein kinase A-PKA), KN-62 (1 μg/site i.c.v., an inhibitor of Ca2+/calmodulin-dependent protein kinase II-CAMKII), chelerythrine (1 μg/site i.c.v., an inhibitor of protein kinase C-PKC) or PD098059 (5 μg/site i.c.v., an inhibitor of extracellular-regulated protein kinase 1/2-ERK1/2). Fifteen minutes after, vehicle or OSX was injected, and 30 min later, the TST and open field tests (OFT) were carried out. RESULTS The antidepressant-like effect of orally administered OSX was blocked by treatment of the mice with H-89, KN-62, chelerythrine and PD098059; all inhibitors of signalling proteins involved with neurotrophic signalling pathways. The number of crossings in the OFT was not altered by treatment with OSX and/or signalling antagonists. CONCLUSIONS The results demonstrated that OSX showed an antidepressant-like effect in the TST in mice through the activation of protein kinases PKA, PKC, CAMKII and ERK1/2 that are involved in intracellular signalling pathways.
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Affiliation(s)
- Lucimar M Pinto Brod
- Programa de Pós Graduação em Biotecnologia, PPGBiotec, Grupo de Pesquisa em Neurobiotecnologia - GPN, CDTec, Universidade Federal de Pelotas, UFPel, Pelotas, RS, Brazil
| | - Mariana G Fronza
- Programa de Pós Graduação em Biotecnologia, PPGBiotec, Grupo de Pesquisa em Neurobiotecnologia - GPN, CDTec, Universidade Federal de Pelotas, UFPel, Pelotas, RS, Brazil
| | - Jaqueline Pinto Vargas
- Instituto de Química, Universidade Federal do Rio Grande do Sul, UFRGS, Av. Bento Gonçalves 9500, Porto Alegre, RS, 91501-970, Brazil
| | - Diogo S Lüdtke
- Instituto de Química, Universidade Federal do Rio Grande do Sul, UFRGS, Av. Bento Gonçalves 9500, Porto Alegre, RS, 91501-970, Brazil
| | - César Augusto Brüning
- Núcleo de Síntese, Aplicação e Análise de Compostos Orgânicos e Inorgânicos, Universidade Federal da Fronteira Sul, Cerro Largo, RS, Brazil
| | - Lucielli Savegnago
- Programa de Pós Graduação em Biotecnologia, PPGBiotec, Grupo de Pesquisa em Neurobiotecnologia - GPN, CDTec, Universidade Federal de Pelotas, UFPel, Pelotas, RS, Brazil. .,Programa de Pós Graduação em Bioquímica e Bioprospecção, PPGBBio, Grupo de Pesquisa em Neurobiotecnologia - GPN, CCQFA, Universidade Federal de Pelotas, UFPel, Pelotas, RS, Brazil.
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Parra-Damas A, Chen M, Enriquez-Barreto L, Ortega L, Acosta S, Perna JC, Fullana MN, Aguilera J, Rodríguez-Alvarez J, Saura CA. CRTC1 Function During Memory Encoding Is Disrupted in Neurodegeneration. Biol Psychiatry 2017; 81:111-123. [PMID: 27587263 DOI: 10.1016/j.biopsych.2016.06.025] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 05/31/2016] [Accepted: 06/21/2016] [Indexed: 12/16/2022]
Abstract
BACKGROUND Associative memory impairment is an early clinical feature of dementia patients, but the molecular and cellular mechanisms underlying these deficits are largely unknown. In this study, we investigated the functional regulation of the cyclic adenosine monophosphate response element binding protein (CREB)-regulated transcription coactivator 1 (CRTC1) by associative learning in physiological and neurodegenerative conditions. METHODS We evaluated the activation of CRTC1 in the hippocampus of control mice and mice lacking the Alzheimer's disease-linked presenilin genes (presenilin conditional double knockout [PS cDKO]) after one-trial contextual fear conditioning by using biochemical, immunohistochemical, and gene expression analyses. PS cDKO mice display classical features of neurodegeneration occurring in Alzheimer's disease including age-dependent cortical atrophy, neuron loss, dendritic degeneration, and memory deficits. RESULTS Context-associative learning, but not single context or unconditioned stimuli, induces rapid dephosphorylation (Ser151) and translocation of CRTC1 from the cytosol/dendrites to the nucleus of hippocampal neurons in the mouse brain. Accordingly, context-associative learning induces differential CRTC1-dependent transcription of c-fos and the nuclear receptor subfamily 4 (Nr4a) genes Nr4a1-3 in the hippocampus through a mechanism that involves CRTC1 recruitment to CRE promoters. Deregulation of CRTC1 dephosphorylation, nuclear translocation, and transcriptional function are associated with long-term contextual memory deficits in PS cDKO mice. Importantly, CRTC1 gene therapy in the hippocampus ameliorates context memory and transcriptional deficits and dendritic degeneration despite ongoing cortical degeneration in this neurodegeneration mouse model. CONCLUSIONS These findings reveal a critical role of CRTC1 in the hippocampus during associative memory, and provide evidence that CRTC1 deregulation underlies memory deficits during neurodegeneration.
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Affiliation(s)
- Arnaldo Parra-Damas
- Institut de Neurociències, Department de Bioquímica i Biologia Molecular; and the; Centro de Investigación Biomédica en Red Enfermedades Neurodegenerativas, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Meng Chen
- Institut de Neurociències, Department de Bioquímica i Biologia Molecular; and the; Centro de Investigación Biomédica en Red Enfermedades Neurodegenerativas, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Lilian Enriquez-Barreto
- Institut de Neurociències, Department de Bioquímica i Biologia Molecular; and the; Centro de Investigación Biomédica en Red Enfermedades Neurodegenerativas, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Laura Ortega
- Institut de Neurociències, Department de Bioquímica i Biologia Molecular; and the
| | - Sara Acosta
- Institut de Neurociències, Department de Bioquímica i Biologia Molecular; and the
| | - Judith Camats Perna
- Institut de Neurociències, Department de Bioquímica i Biologia Molecular; and the
| | - M Neus Fullana
- Institut de Neurociències, Department de Bioquímica i Biologia Molecular; and the
| | - José Aguilera
- Institut de Neurociències, Department de Bioquímica i Biologia Molecular; and the; Centro de Investigación Biomédica en Red Enfermedades Neurodegenerativas, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - José Rodríguez-Alvarez
- Institut de Neurociències, Department de Bioquímica i Biologia Molecular; and the; Centro de Investigación Biomédica en Red Enfermedades Neurodegenerativas, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Carlos A Saura
- Institut de Neurociències, Department de Bioquímica i Biologia Molecular; and the; Centro de Investigación Biomédica en Red Enfermedades Neurodegenerativas, Universitat Autònoma de Barcelona, Barcelona, Spain.
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Belgacem YH, Borodinsky LN. CREB at the Crossroads of Activity-Dependent Regulation of Nervous System Development and Function. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 1015:19-39. [PMID: 29080019 DOI: 10.1007/978-3-319-62817-2_2] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The central nervous system is a highly plastic network of cells that constantly adjusts its functions to environmental stimuli throughout life. Transcription-dependent mechanisms modify neuronal properties to respond to external stimuli regulating numerous developmental functions, such as cell survival and differentiation, and physiological functions such as learning, memory, and circadian rhythmicity. The discovery and cloning of the cyclic adenosine monophosphate (cAMP) responsive element binding protein (CREB) constituted a big step toward deciphering the molecular mechanisms underlying neuronal plasticity. CREB was first discovered in learning and memory studies as a crucial mediator of activity-dependent changes in target gene expression that in turn impose long-lasting modifications of the structure and function of neurons. In this chapter, we review the molecular and signaling mechanisms of neural activity-dependent recruitment of CREB and its cofactors. We discuss the crosstalk between signaling pathways that imprints diverse spatiotemporal patterns of CREB activation allowing for the integration of a wide variety of stimuli.
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Affiliation(s)
- Yesser H Belgacem
- INMED, Aix-Marseille Univ, INSERM, Marseille, France and Aix-Marseille Université, IMéRA, F-13000, Marseille, France.
| | - Laura N Borodinsky
- Department of Physiology & Membrane Biology and Institute for Pediatric Regenerative Medicine, University of California Davis School of Medicine and Shriners Hospital for Children Northern California, Sacramento, CA, USA
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Epilepsy-causing sequence variations in SIK1 disrupt synaptic activity response gene expression and affect neuronal morphology. Eur J Hum Genet 2016; 25:216-221. [PMID: 27966542 DOI: 10.1038/ejhg.2016.145] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 09/20/2016] [Accepted: 09/27/2016] [Indexed: 12/30/2022] Open
Abstract
SIK1 syndrome is a newly described developmental epilepsy disorder caused by heterozygous mutations in the salt-inducible kinase SIK1. To better understand the pathophysiology of SIK1 syndrome, we studied the effects of SIK1 pathogenic sequence variations in human neurons. Primary human fetal cortical neurons were transfected with a lentiviral vector to overexpress wild-type and mutant SIK1 protein. We evaluated the transcriptional activity of known downstream gene targets in neurons expressing mutant SIK1 compared with wild type. We then assayed neuronal morphology by measuring neurite length, number and branching. Truncating SIK1 sequence variations were associated with abnormal MEF2C transcriptional activity and decreased MEF2C protein levels. Epilepsy-causing SIK1 sequence variations were associated with significantly decreased expression of ARC (activity-regulated cytoskeletal-associated) and other synaptic activity response element genes. Assay of mRNA levels for other MEF2C target genes NR4A1 (Nur77) and NRG1, found significantly, decreased the expression of these genes as well. The missense p.(Pro287Thr) SIK1 sequence variation was associated with abnormal neuronal morphology, with significant decreases in mean neurite length, mean number of neurites and a significant increase in proximal branches compared with wild type. Epilepsy-causing SIK1 sequence variations resulted in abnormalities in the MEF2C-ARC pathway of neuronal development and synapse activity response. This work provides the first insights into the mechanisms of pathogenesis in SIK1 syndrome, and extends the ARX-MEF2C pathway in the pathogenesis of developmental epilepsy.
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Involvement of the agmatinergic system in the depressive-like phenotype of the Crtc1 knockout mouse model of depression. Transl Psychiatry 2016; 6:e852. [PMID: 27404284 PMCID: PMC5545706 DOI: 10.1038/tp.2016.116] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 04/27/2016] [Accepted: 04/29/2016] [Indexed: 12/15/2022] Open
Abstract
Recent studies implicate the arginine-decarboxylation product agmatine in mood regulation. Agmatine has antidepressant properties in rodent models of depression, and agmatinase (Agmat), the agmatine-degrading enzyme, is upregulated in the brains of mood disorder patients. We have previously shown that mice lacking CREB-regulated transcription coactivator 1 (CRTC1) associate behavioral and molecular depressive-like endophenotypes, as well as blunted responses to classical antidepressants. Here, the molecular basis of the behavioral phenotype of Crtc1(-/-) mice was further examined using microarray gene expression profiling that revealed an upregulation of Agmat in the cortex of Crtc1(-/-) mice. Quantitative polymerase chain reaction and western blot analyses confirmed Agmat upregulation in the Crtc1(-/-) prefrontal cortex (PFC) and hippocampus, which were further demonstrated by confocal immunofluorescence microscopy to comprise an increased number of Agmat-expressing cells, notably parvalbumin- and somatostatin-positive interneurons. Acute agmatine and ketamine treatments comparably improved the depressive-like behavior of male and female Crtc1(-/-) mice in the forced swim test, suggesting that exogenous agmatine has a rapid antidepressant effect through the compensation of agmatine deficit because of upregulated Agmat. Agmatine rapidly increased brain-derived neurotrophic factor (BDNF) levels only in the PFC of wild-type (WT) females, and decreased eukaryotic elongation factor 2 (eEF2) phosphorylation in the PFC of male and female WT mice, indicating that agmatine might be a fast-acting antidepressant with N-methyl-D-aspartate (NMDA) receptor antagonist properties. Collectively, these findings implicate Agmat in the depressive-like phenotype of Crtc1(-/-) mice, refine current understanding of the agmatinergic system in the brain and highlight its putative role in major depression.
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Mendioroz M, Celarain N, Altuna M, Sánchez-Ruiz de Gordoa J, Zelaya MV, Roldán M, Rubio I, Larumbe R, Erro ME, Méndez I, Echávarri C. CRTC1 gene is differentially methylated in the human hippocampus in Alzheimer's disease. ALZHEIMERS RESEARCH & THERAPY 2016; 8:15. [PMID: 27094739 PMCID: PMC4837517 DOI: 10.1186/s13195-016-0183-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Accepted: 04/01/2016] [Indexed: 01/22/2023]
Abstract
BACKGROUND CRTC1 (CREB regulated transcription coactivator 1) gene plays a role in synaptic plasticity, learning and long-term memory formation in the hippocampus. Recently, CRTC1 has been shown to be downregulated in Alzheimer's disease (AD). Nevertheless, the mechanisms underlying CRTC1 dysregulation in AD remain unclear. METHODS To understand better the epigenetic mechanisms regulating CRTC1 expression that may be altered in AD, we profiled DNA methylation at CpG site resolution by bisulfite cloning sequencing in two promoter regions (referred to as Prom1 and Prom2) of the CRTC1 gene in human hippocampus from controls and AD cases. Next, we correlated DNA methylation levels with AD-related pathology, i.e., β-amyloid and phosphorylated-tau (p-tau) burden and also measured CRTC1 mRNA levels by RT-qPCR. RESULTS Methylation levels were lower in AD cases as compared to controls within both promoter regions (Prom1: 0.95% vs. 5%, p-value < 0.01 and Prom2: 2.80% vs. 17.80%, p-value < 0.001). Interestingly, CRTC1 methylation levels inversely correlated with AD-related neuropathological changes, particularly with p-tau deposition (rSpearman = -0.903, p < 0.001). Moreover, a 1.54-fold decrease in CRTC1 mRNA levels was observed in hippocampus of AD cases compared to controls (p < 0.05) supporting the notion that CRTC1 is downregulated in the AD hippocampus. CONCLUSIONS DNA methylation levels within two distinct promoter regions of the CRTC1 gene were decreased in human hippocampus affected by AD compared with controls and methylation within Prom1 showed a strong inverse correlation with p-tau deposition. Further studies are guaranteed to elucidate the precise role that CRTC1 methylation plays in AD pathophysiology.
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Affiliation(s)
- Maite Mendioroz
- NeuroEpigenetics Laboratory, Navarrabiomed- IdiSNA (Navarra Institute for Health Research), c/ Irunlarrea, 3, Pamplona, Navarra, 31008, Spain. .,Department of Neurology, Complejo Hospitalario de Navarra- IdiSNA (Navarra Institute for Health Research), Pamplona, Navarra, 31008, Spain.
| | - Naiara Celarain
- NeuroEpigenetics Laboratory, Navarrabiomed- IdiSNA (Navarra Institute for Health Research), c/ Irunlarrea, 3, Pamplona, Navarra, 31008, Spain
| | - Miren Altuna
- Department of Neurology, Complejo Hospitalario de Navarra- IdiSNA (Navarra Institute for Health Research), Pamplona, Navarra, 31008, Spain
| | - Javier Sánchez-Ruiz de Gordoa
- NeuroEpigenetics Laboratory, Navarrabiomed- IdiSNA (Navarra Institute for Health Research), c/ Irunlarrea, 3, Pamplona, Navarra, 31008, Spain.,Department of Neurology, Complejo Hospitalario de Navarra- IdiSNA (Navarra Institute for Health Research), Pamplona, Navarra, 31008, Spain
| | - María Victoria Zelaya
- Department of Pathology, Complejo Hospitalario de Navarra- IdiSNA (Navarra Institute for Health Research), Pamplona, Navarra, 31008, Spain
| | - Miren Roldán
- NeuroEpigenetics Laboratory, Navarrabiomed- IdiSNA (Navarra Institute for Health Research), c/ Irunlarrea, 3, Pamplona, Navarra, 31008, Spain
| | - Idoya Rubio
- Department of Neurology, Complejo Hospitalario de Navarra- IdiSNA (Navarra Institute for Health Research), Pamplona, Navarra, 31008, Spain
| | - Rosa Larumbe
- NeuroEpigenetics Laboratory, Navarrabiomed- IdiSNA (Navarra Institute for Health Research), c/ Irunlarrea, 3, Pamplona, Navarra, 31008, Spain.,Department of Neurology, Complejo Hospitalario de Navarra- IdiSNA (Navarra Institute for Health Research), Pamplona, Navarra, 31008, Spain
| | - María Elena Erro
- Department of Neurology, Complejo Hospitalario de Navarra- IdiSNA (Navarra Institute for Health Research), Pamplona, Navarra, 31008, Spain
| | - Iván Méndez
- NeuroEpigenetics Laboratory, Navarrabiomed- IdiSNA (Navarra Institute for Health Research), c/ Irunlarrea, 3, Pamplona, Navarra, 31008, Spain.,Hospital García-Orcoyen, Estella, Navarra, 31200, Spain
| | - Carmen Echávarri
- NeuroEpigenetics Laboratory, Navarrabiomed- IdiSNA (Navarra Institute for Health Research), c/ Irunlarrea, 3, Pamplona, Navarra, 31008, Spain.,Hospital Psicogeriátrico Josefina Arregui, Alsasua, Navarra, 31800, Spain
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Meylan EM, Halfon O, Magistretti PJ, Cardinaux JR. The HDAC inhibitor SAHA improves depressive-like behavior of CRTC1-deficient mice: Possible relevance for treatment-resistant depression. Neuropharmacology 2016; 107:111-121. [PMID: 26970016 DOI: 10.1016/j.neuropharm.2016.03.012] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 03/04/2016] [Accepted: 03/06/2016] [Indexed: 01/11/2023]
Abstract
Major depression is a highly complex disabling psychiatric disorder affecting millions of people worldwide. Despite the availability of several classes of antidepressants, a substantial percentage of patients are unresponsive to these medications. A better understanding of the neurobiology of depression and the mechanisms underlying antidepressant response is thus critically needed. We previously reported that mice lacking CREB-regulated transcription coactivator 1 (CRTC1) exhibit a depressive-like phenotype and a blunted antidepressant response to the selective serotonin reuptake inhibitor fluoxetine. In this study, we similarly show that Crtc1(-/-) mice are resistant to the antidepressant effect of chronic desipramine in a behavioral despair paradigm. Supporting the blunted response to this tricyclic antidepressant, we found that desipramine does not significantly increase the expression of Bdnf and Nr4a1-3 in the hippocampus and prefrontal cortex of Crtc1(-/-) mice. Epigenetic regulation of neuroplasticity gene expression has been associated with depression and antidepressant response, and histone deacetylase (HDAC) inhibitors have been shown to have antidepressant-like properties. Here, we show that unlike conventional antidepressants, chronic systemic administration of the HDAC inhibitor SAHA partially rescues the depressive-like behavior of Crtc1(-/-) mice. This behavioral effect is accompanied by an increased expression of Bdnf, but not Nr4a1-3, in the prefrontal cortex of these mice, suggesting that this epigenetic intervention restores the expression of a subset of genes by acting downstream of CRTC1. These findings suggest that CRTC1 alterations may be associated with treatment-resistant depression, and support the interesting possibility that targeting HDACs may be a useful therapeutic strategy in antidepressant development.
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Affiliation(s)
- Elsa M Meylan
- Center for Psychiatric Neuroscience, Department of Psychiatry, University Medical Center, University of Lausanne, Prilly, Switzerland; Service of Child and Adolescent Psychiatry, Department of Psychiatry, University Medical Center, University of Lausanne, Lausanne, Switzerland
| | - Olivier Halfon
- Service of Child and Adolescent Psychiatry, Department of Psychiatry, University Medical Center, University of Lausanne, Lausanne, Switzerland
| | - Pierre J Magistretti
- Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia; Laboratory of Neuroenergetics and Cellular Dynamics, Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland; Center for Psychiatric Neuroscience, Department of Psychiatry, University Medical Center, University of Lausanne, Prilly, Switzerland
| | - Jean-René Cardinaux
- Center for Psychiatric Neuroscience, Department of Psychiatry, University Medical Center, University of Lausanne, Prilly, Switzerland; Service of Child and Adolescent Psychiatry, Department of Psychiatry, University Medical Center, University of Lausanne, Lausanne, Switzerland.
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