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Kwon OH, Choe J, Kim D, Kim S, Moon C. Sensory Stimulation-dependent Npas4 Expression in the Olfactory Bulb during Early Postnatal Development. Exp Neurobiol 2024; 33:77-98. [PMID: 38724478 PMCID: PMC11089401 DOI: 10.5607/en23037] [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: 11/28/2023] [Revised: 03/19/2024] [Accepted: 04/17/2024] [Indexed: 05/15/2024] Open
Abstract
The development of the olfactory system is influenced by sensory inputs, and it maintains neuronal generation and plasticity throughout the lifespan. The olfactory bulb contains a higher proportion of interneurons than other brain regions, particularly during the early postnatal period of neurogenesis. Although the relationship between sensory stimulation and olfactory bulb development during the postnatal period has been well studied, the molecular mechanisms have yet to be identified. In this study, we used western blotting and immunohistochemistry to analyze the expression of the transcription factor Npas4, a neuron-specific immediate-early gene that acts as a developmental regulator in many brain regions. We found that Npas4 is highly expressed in olfactory bulb interneurons during the early postnatal stages and gradually decreases toward the late postnatal stages. Npas4 expression was observed in all olfactory bulb layers, including the rostral migratory stream, where newborn neurons are generated and migrate to the olfactory bulb. Under sensory deprivation, the olfactory bulb size and the number of olfactory bulb interneurons were reduced. Furthermore, Npas4 expression and the expression of putative Npas4 downstream molecules were decreased. Collectively, these findings indicate that Npas4 expression induced by sensory input plays a role in the formation of neural circuits with excitatory mitral/tufted cells by regulating the survival of olfactory bulb interneurons during the early stages of postnatal development.
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Affiliation(s)
- Oh-Hoon Kwon
- Convergence Research Advanced Centre for Olfaction, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Korea
| | - Jiyun Choe
- Department of Brain Sciences, Graduate School, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Korea
| | - Dokyeong Kim
- Department of Brain Sciences, Graduate School, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Korea
| | - Sunghwan Kim
- Department of Brain Sciences, Graduate School, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Korea
| | - Cheil Moon
- Convergence Research Advanced Centre for Olfaction, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Korea
- Department of Brain Sciences, Graduate School, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Korea
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Yao ZG, Jing HY, Wang DM, Lv BB, Li JM, Liu FF, Fan H, Sun XC, Qin YJ, Zhao MQ. Valproic acid ameliorates olfactory dysfunction in APP/PS1 transgenic mice of Alzheimer's disease: Ameliorations from the olfactory epithelium to the olfactory bulb. Pharmacol Biochem Behav 2016; 144:53-9. [PMID: 26948859 DOI: 10.1016/j.pbb.2016.02.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 02/25/2016] [Accepted: 02/29/2016] [Indexed: 11/29/2022]
Abstract
Olfactory dysfunction is a common and early symptom of many neurodegenerative diseases, particularly of Alzheimer's disease (AD) and mild cognitive impairment, pointing to the progression to dementia. Recent studies have revealed that valproic acid (VPA) has neuroprotective effects in rodent models of AD. In this study, we investigated the effects of VPA on olfactory dysfunction of APP/PS1 double transgenic mouse models of AD. After continuous treatment with a 100mg/kg daily dose of VPA for 3 months, APP/PS1 mice showed improved olfactory performances. In agreement with the behavioral findings, VPA treatment reduced amyloid β (Aβ) burden in the olfactory epithelium (OE) of transgenic mice. And, VPA increased epithelial thickness of the olfactory mucosa through decreased cell apoptosis and increased cell proliferation. In the olfactory bulb (OB), VPA administration also reduced senile plaques and levels of soluble and insoluble Aβ42 peptides. Besides, VPA promoted the increase of mitral cells and decrease of neurofilament immunostaining. In hence, VPA treatment completely improved the olfactory performances and prevented degenerative changes of the OE and OB. Our study raises the possibility of AD diagnosis by OE biopsy. Moreover, VPA may provide a novel therapeutic strategy for the treatment of olfactory dysfunction in AD patients.
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Affiliation(s)
- Zhi-Gang Yao
- Department of Pathology, Shandong Provincial Hospital Affiliated to Shandong University, No. 324 Jingwu Road, Jinan 250021, China
| | - Hai-Yan Jing
- Department of Pathology, Shandong Provincial Hospital Affiliated to Shandong University, No. 324 Jingwu Road, Jinan 250021, China
| | - Dong-Mei Wang
- Department of Pathogen Biology, Medical College, Henan University of Science and Technology, Building 6, Anhui Jianxi District, Luoyang 471003, China
| | - Bei-Bei Lv
- Department of Pathology, Shandong Provincial Hospital Affiliated to Shandong University, No. 324 Jingwu Road, Jinan 250021, China
| | - Jia-Mei Li
- Department of Pathology, Shandong Provincial Hospital Affiliated to Shandong University, No. 324 Jingwu Road, Jinan 250021, China
| | - Feng-Feng Liu
- Department of Pathology, Shandong Provincial Hospital Affiliated to Shandong University, No. 324 Jingwu Road, Jinan 250021, China
| | - Hui Fan
- Department of Pathology, Shandong Provincial Hospital Affiliated to Shandong University, No. 324 Jingwu Road, Jinan 250021, China
| | - Xi-Chao Sun
- Department of Pathology, Shandong Provincial Hospital Affiliated to Shandong University, No. 324 Jingwu Road, Jinan 250021, China
| | - Ye-Jun Qin
- Department of Pathology, Shandong Provincial Hospital Affiliated to Shandong University, No. 324 Jingwu Road, Jinan 250021, China
| | - Miao-Qing Zhao
- Department of Pathology, Shandong Provincial Hospital Affiliated to Shandong University, No. 324 Jingwu Road, Jinan 250021, China
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Abstract
Among the many forms of brain plasticity, changes in synaptic strength and changes in synapse number are particularly prominent. However, evidence for neurotransmitter respecification or switching has been accumulating steadily, both in the developing nervous system and in the adult brain, with observations of transmitter addition, loss, or replacement of one transmitter with another. Natural stimuli can drive these changes in transmitter identity, with matching changes in postsynaptic transmitter receptors. Strikingly, they often convert the synapse from excitatory to inhibitory or vice versa, providing a basis for changes in behavior in those cases in which it has been examined. Progress has been made in identifying the factors that induce transmitter switching and in understanding the molecular mechanisms by which it is achieved. There are many intriguing questions to be addressed.
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Affiliation(s)
- Nicholas C Spitzer
- Neurobiology Section, Division of Biological Sciences & Kavli Institute for Brain and Mind, UCSD, La Jolla, CA 92093, USA.
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Wilson CB, McLaughlin LD, Ebenezer PJ, Nair AR, Francis J. Valproic acid effects in the hippocampus and prefrontal cortex in an animal model of post-traumatic stress disorder. Behav Brain Res 2014; 268:72-80. [DOI: 10.1016/j.bbr.2014.03.029] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 03/08/2014] [Accepted: 03/10/2014] [Indexed: 12/31/2022]
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Bovetti S, Bonzano S, Garzotto D, Giannelli SG, Iannielli A, Armentano M, Studer M, De Marchis S. COUP-TFI controls activity-dependent tyrosine hydroxylase expression in adult dopaminergic olfactory bulb interneurons. Development 2013; 140:4850-9. [DOI: 10.1242/dev.089961] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
COUP-TFI is an orphan nuclear receptor acting as a strong transcriptional regulator in different aspects of forebrain embryonic development. In this study, we investigated COUP-TFI expression and function in the mouse olfactory bulb (OB), a highly plastic telencephalic region in which continuous integration of newly generated inhibitory interneurons occurs throughout life. OB interneurons belong to different populations that originate from distinct progenitor lineages. Here, we show that COUP-TFI is highly expressed in tyrosine hydroxylase (TH)-positive dopaminergic interneurons in the adult OB glomerular layer (GL). We found that odour deprivation, which is known to downregulate TH expression in the OB, also downregulates COUP-TFI in dopaminergic cells, indicating a possible correlation between TH- and COUP-TFI-activity-dependent action. Moreover, we demonstrate that conditional inactivation of COUP-TFI in the EMX1 lineage results in a significant reduction of both TH and ZIF268 expression in the GL. Finally, lentiviral vector-mediated COUP-TFI deletion in adult-generated interneurons confirmed that COUP-TFI acts cell-autonomously in the control of TH and ZIF268 expression. These data indicate that COUP-TFI regulates TH expression in OB cells through an activity-dependent mechanism involving ZIF268 induction and strongly argue for a maintenance rather than establishment function of COUP-TFI in dopaminergic commitment. Our study reveals a previously unknown role for COUP-TFI in the adult brain as a key regulator in the control of sensory-dependent plasticity in olfactory dopaminergic neurons.
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Affiliation(s)
- Serena Bovetti
- Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123, Torino, Italy
| | - Sara Bonzano
- Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123, Torino, Italy
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gerzole 10, 10043, Orbassano, Italy
| | - Donatella Garzotto
- Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123, Torino, Italy
| | - Serena Gea Giannelli
- San Raffaele Telethon Institute for Gene Therapy (HSR-TIGET), Division of Regenerative Medicine, Stem Cells, and Gene Therapy, San Raffaele Scientific Institute, Via Olgettina28, 20132, Milano, Italy
| | - Angelo Iannielli
- Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123, Torino, Italy
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gerzole 10, 10043, Orbassano, Italy
| | - Maria Armentano
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gerzole 10, 10043, Orbassano, Italy
- Telethon Institute of Genetics and Medicine (TIGEM), Via P. Castellino 111, 80131, Napoli, Italy
| | - Michèle Studer
- Telethon Institute of Genetics and Medicine (TIGEM), Via P. Castellino 111, 80131, Napoli, Italy
- University of Nice Sophia-Antipolis, Parc Valrose, 28 Avenue Valrose, F-06108 Nice, France
- INSERM UMR 1091, Parc Valrose, 28 Avenue Valrose, F-06108 Nice, France
| | - Silvia De Marchis
- Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123, Torino, Italy
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gerzole 10, 10043, Orbassano, Italy
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Díaz-Guerra E, Pignatelli J, Nieto-Estévez V, Vicario-Abejón C. Transcriptional Regulation of Olfactory Bulb Neurogenesis. Anat Rec (Hoboken) 2013; 296:1364-82. [DOI: 10.1002/ar.22733] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2012] [Revised: 11/13/2012] [Accepted: 12/08/2012] [Indexed: 12/21/2022]
Affiliation(s)
- Eva Díaz-Guerra
- Instituto Cajal, Consejo Superior de Investigaciones Científicas (CSIC); Madrid Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED, ISCIII); Madrid Spain
| | - Jaime Pignatelli
- Instituto Cajal, Consejo Superior de Investigaciones Científicas (CSIC); Madrid Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED, ISCIII); Madrid Spain
| | - Vanesa Nieto-Estévez
- Instituto Cajal, Consejo Superior de Investigaciones Científicas (CSIC); Madrid Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED, ISCIII); Madrid Spain
| | - Carlos Vicario-Abejón
- Instituto Cajal, Consejo Superior de Investigaciones Científicas (CSIC); Madrid Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED, ISCIII); Madrid Spain
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Sodium butyrate improves locomotor impairment and early mortality in a rotenone-induced Drosophila model of Parkinson's disease. Neuroscience 2013; 246:382-90. [PMID: 23623990 DOI: 10.1016/j.neuroscience.2013.04.037] [Citation(s) in RCA: 127] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Revised: 04/08/2013] [Accepted: 04/17/2013] [Indexed: 11/21/2022]
Abstract
Parkinson's disease (PD) is a neurodegenerative disorder primarily affecting the dopaminergic neurons in the nigrastriatal pathway resulting in debilitating motor impairment in both familial and sporadic cases. Histone deacetylase (HDAC) inhibitors have been recently implicated as a therapeutic candidate because of their ability to correct the disrupted HDAC activity in PD and other neurodegenerative diseases. Sodium butyrate (SB), an HDAC inhibitor, reduces degeneration of dopaminergic neurons in a mutant alpha-synuclein Drosophila transgenic model of familial PD. Chronic exposure to the pesticide rotenone also causes selective degeneration of dopaminergic neurons and causes locomotor impairment and early mortality in a Drosophila model of chemically induced PD. This study investigated the effects of sodium butyrate on locomotor impairment and early mortality in a rotenone-induced PD model. We show that treatment with 10mM SB-supplemented food rescued the rotenone-induced locomotor impairment and early mortality in flies. Additionally, flies with the genetic knockdown of HDAC activity through Sin3A loss-of-function mutation (Sin3A(lof)) were resistant to rotenone-induced locomotor impairment and early mortality. Furthermore, SB-supplemented Sin3A(lof) flies had a modest additive effect for improving locomotor impairment. We also show SB-mediated improvement of rotenone-induced locomotor impairment was associated with elevated dopamine levels in the brain. However, the possibility of SB-mediated protective role through mechanisms independent from dopamine system is also discussed. These findings demonstrate that HDAC inhibitors like SB can ameliorate locomotor impairment in a rotenone-induced PD model.
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Foti SB, Chou A, Moll AD, Roskams AJ. HDAC inhibitors dysregulate neural stem cell activity in the postnatal mouse brain. Int J Dev Neurosci 2013; 31:434-47. [PMID: 23542004 DOI: 10.1016/j.ijdevneu.2013.03.008] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Revised: 03/15/2013] [Accepted: 03/16/2013] [Indexed: 01/09/2023] Open
Abstract
The mammalian central nervous system (CNS) undergoes significant expansion postnatally, producing astrocytes, oligodendrocytes and inhibitory neurons to modulate the activity of neural circuits. This is coincident in humans with the emergence of pediatric epilepsy, a condition commonly treated with valproate/valproic acid (VPA), a potent inhibitor of histone deacetylases (HDACs). The sequential activity of specific HDACs, however, may be essential for the differentiation of distinct subpopulations of neurons and glia. Here, we show that different subsets of CNS neural stem cells (NSCs) and progenitors switch expression of HDAC1 and HDAC2 as they commit to a neurogenic lineage in the subventricular zone (SVZ) and dentate gyrus (DG). The administration of VPA for only one week from P7-P14, combined with sequential injections of thymidine analogs reveals that VPA stimulates a significant and differential decrease in the production and differentiation of progeny of NSCs in the DG, rostral migratory stream (RMS), and olfactory bulb (OB). Cross-fostering VPA-treated mice revealed, however, that a postnatal failure to thrive induced by VPA treatment had a greater effect on DG neurogenesis than VPA action directly. By one month after VPA, OB interneuron genesis was significantly and differentially reduced in both periglomerular and granule neurons. Using neurosphere assays to test if VPA directly regulates NSC activity, we found that short term treatment with VPA in vivo reduced neurosphere numbers and size, a phenotype that was also obtained in neurospheres from control mice treated with VPA and an alternative HDAC inhibitor, Trichostatin A (TSA) at 0 and 3 days in vitro (DIV). Collectively, these data show that clinically used HDAC inhibitors like VPA and TSA can perturb postnatal neurogenesis; and their use should be carefully considered, especially in individuals whose brains are actively undergoing key postnatal time windows of development.
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Affiliation(s)
- Stacey Beth Foti
- Department of Zoology, Life Sciences Institute and Brain Research Centre, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
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Banerjee K, Akiba Y, Baker H, Cave JW. Epigenetic control of neurotransmitter expression in olfactory bulb interneurons. Int J Dev Neurosci 2012; 31:415-23. [PMID: 23220178 DOI: 10.1016/j.ijdevneu.2012.11.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 11/21/2012] [Accepted: 11/22/2012] [Indexed: 12/24/2022] Open
Abstract
Defining the molecular mechanisms that underlie development and maintenance of neuronal phenotypic diversity in the CNS is a fundamental challenge in developmental neurobiology. The vast majority of olfactory bulb (OB) interneurons are GABAergic and this neurotransmitter phenotype is specified in migrating neuroblasts by transcription of either or both glutamic acid decarboxylase 1 (Gad1) and Gad2. A subset of OB interneurons also co-express dopamine, but transcriptional repression of tyrosine hydroxylase (Th) suppresses the dopaminergic phenotype until these neurons terminally differentiate. In mature OB interneurons, GABA and dopamine levels are modulated by odorant-induced synaptic activity-dependent regulation of Gad1 and Th transcription. The molecular mechanisms that specify and maintain the GABAergic and dopaminergic phenotypes in the OB are not clearly delineated. In this report, we review previous studies and present novel findings that provide insight into the contribution of epigenetic regulatory mechanisms for controlling expression of these neurotransmitter phenotypes in the OB. We show that HDAC enzymes suppress the dopaminergic phenotype in migrating neuroblasts by repressing Th transcription. In the mature interneurons, both Th and Gad1 transcription levels are modulated by synaptic activity-dependent recruitment of acetylated Histone H3 on both the Th and Gad1 proximal promoters. We also show that HDAC2 has the opposite transcriptional response to odorant-induced synaptic activity when compared to Th and Gad1. These findings suggest that HDAC2 mediates, in part, the activity-dependent chromatin remodeling of the Th and Gad1 proximal promoters in mature OB interneurons.
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Affiliation(s)
- Kasturi Banerjee
- Burke Medical Research Institute, 785 Mamaroneck Avenue, White Plains, NY 10605, United States
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Aumann T, Horne M. Activity‐dependent regulation of the dopamine phenotype in substantia nigra neurons. J Neurochem 2012; 121:497-515. [DOI: 10.1111/j.1471-4159.2012.07703.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Tim Aumann
- Florey Neuroscience Institutes, Melbourne Brain Centre, The University of Melbourne, Parkville, Victoria, Australia
- Centre for Neuroscience, Melbourne Brain Centre, The University of Melbourne, Parkville, Victoria, Australia
| | - Mal Horne
- Florey Neuroscience Institutes, Melbourne Brain Centre, The University of Melbourne, Parkville, Victoria, Australia
- St Vincent’s Hospital, Fitzroy, Victoria, Australia
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Mejia-Gervacio S, Murray K, Lledo PM. NKCC1 controls GABAergic signaling and neuroblast migration in the postnatal forebrain. Neural Dev 2011; 6:4. [PMID: 21284844 PMCID: PMC3038882 DOI: 10.1186/1749-8104-6-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2010] [Accepted: 02/01/2011] [Indexed: 11/12/2022] Open
Abstract
From an early postnatal period and throughout life there is a continuous production of olfactory bulb (OB) interneurons originating from neuronal precursors in the subventricular zone. To reach the OB circuits, immature neuroblasts migrate along the rostral migratory stream (RMS). In the present study, we employed cultured postnatal mouse forebrain slices and used lentiviral vectors to label neuronal precursors with GFP and to manipulate the expression levels of the Na-K-2Cl cotransporter NKCC1. We investigated the role of this Cl- transporter in different stages of postnatal neurogenesis, including neuroblast migration and integration in the OB networks once they have reached the granule cell layer (GCL). We report that NKCC1 activity is necessary for maintaining normal migratory speed. Both pharmacological and genetic manipulations revealed that NKCC1 maintains high [Cl-]i and regulates the resting membrane potential of migratory neuroblasts whilst its functional expression is strongly reduced at the time cells reach the GCL. As in other developing systems, NKCC1 shapes GABAA-dependent signaling in the RMS neuroblasts. Also, we show that NKCC1 controls the migration of neuroblasts in the RMS. The present study indeed indicates that the latter effect results from a novel action of NKCC1 on the resting membrane potential, which is independent of GABAA-dependent signaling. All in all, our findings show that early stages of the postnatal recruitment of OB interneurons rely on precise, orchestrated mechanisms that depend on multiple actions of NKCC1.
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Affiliation(s)
- Sheyla Mejia-Gervacio
- Institut Pasteur, Laboratory for Perception and Memory, 25 rue du Dr. Roux, F-75724 Paris Cedex 15, France
- Centre National de la Recherche Scientifique (CNRS) Unité de Recherche Associée (URA) 2182, 75724 Paris, France
| | - Kerren Murray
- Institut Pasteur, Laboratory for Perception and Memory, 25 rue du Dr. Roux, F-75724 Paris Cedex 15, France
- Centre National de la Recherche Scientifique (CNRS) Unité de Recherche Associée (URA) 2182, 75724 Paris, France
| | - Pierre-Marie Lledo
- Institut Pasteur, Laboratory for Perception and Memory, 25 rue du Dr. Roux, F-75724 Paris Cedex 15, France
- Centre National de la Recherche Scientifique (CNRS) Unité de Recherche Associée (URA) 2182, 75724 Paris, France
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