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Maas DA, Manot-Saillet B, Bun P, Habermacher C, Poilbout C, Rusconi F, Angulo MC. Correction: Versatile and automated workflow for the analysis of oligodendroglial calcium signals. Cell Mol Life Sci 2024; 81:109. [PMID: 38429363 PMCID: PMC10907438 DOI: 10.1007/s00018-024-05171-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2024]
Affiliation(s)
- Dorien A Maas
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, "Team: Interactions Between Neurons and Oligodendroglia in Myelination and Myelin Repair", 75014, Paris, France
| | - Blandine Manot-Saillet
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, "Team: Interactions Between Neurons and Oligodendroglia in Myelination and Myelin Repair", 75014, Paris, France
| | - Philippe Bun
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, "NeurImag Platform", 75014, Paris, France
| | - Chloé Habermacher
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, "Team: Interactions Between Neurons and Oligodendroglia in Myelination and Myelin Repair", 75014, Paris, France
- SynapCell, Bâtiment Synergy Zac Isiparc, 38330, Saint Ismier, France
| | - Corinne Poilbout
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, "Team: Interactions Between Neurons and Oligodendroglia in Myelination and Myelin Repair", 75014, Paris, France
| | - Filippo Rusconi
- IDEEV, GQE, Université Paris-Saclay, CNRS, INRAE, AgroParisTech, 12, Route 128, 91272, Gif-sur-Yvette, France
- Centre de Recherche des Cordeliers, Sorbonne Université, INSERM, Université Paris Cité, 75006, Paris, France
| | - Maria Cecilia Angulo
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, "Team: Interactions Between Neurons and Oligodendroglia in Myelination and Myelin Repair", 75014, Paris, France.
- GHU PARIS Psychiatrie and Neurosciences, 75014, Paris, France.
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Personnic E, Gerard G, Poilbout C, Jetten AM, Gómez AM, Benitah JP, Perrier R. Circadian regulation of Ca V 1.2 expression by RORα in the mouse heart. bioRxiv 2024:2024.01.15.575657. [PMID: 38293155 PMCID: PMC10827087 DOI: 10.1101/2024.01.15.575657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Background In addition to show autonomous beating rhythmicity, the physiological functions of the heart present daily periodic oscillations. Notably the ventricular repolarization itself varies throughout the circadian cycle which was mainly related to the periodic expression of K + channels. However, the involvement of the L-type Ca 2+ channel (Ca V 1.2 encoded by Cacna1c gene) in these circadian variations remains elusive. Methods We used a transgenic mouse model (PCa-luc) that expresses the luciferase reporter under the control of the cardiac Cacna1c promoter and analyzed promoter activity by bioluminescent imaging, qPCR, immunoblot, Chromatin immunoprecipitation assay (ChIP) and Ca V 1.2 activity. Results Under normal 12:12h light-dark cycle, we observed in vivo a biphasic diurnal variation of promoter activities peaking at 9 and 19.5 Zeitgeber time (ZT). This was associated with a periodicity of Cacna1c mRNA levels preceding 24-h oscillations of Ca V 1.2 protein levels in ventricle (with a 1.5 h phase shift) but not in atrial heart tissues. The periodicity of promoter activities and Ca V 1.2 proteins, which correlated with biphasic oscillations of L-type Ca 2+ current conductance, persisted in isolated ventricular cardiomyocytes from PCa-Luc mice over the course of the 24-h cycle, suggesting an endogenous cardiac circadian regulation. Comparison of 24-h temporal patterns of clock gene expressions in ventricles and atrial tissues of the same mice revealed conserved circadian oscillations of the core clock genes except for the retinoid-related orphan receptor α gene (RORα), which remained constant throughout the course of a day in atrial tissues. In vitro we found that RORα is recruited to two specific regions on the Cacna1c promoter and that incubation with specific RORα inhibitor disrupted 24-h oscillations of ventricular promoter activities and Ca V 1.2 protein levels. Similar results were observed for pore forming subunits of the K + transient outward currents, K V 4.2 and K V 4.3. Conclusions These findings raise the possibility that the RORα-dependent rhythmic regulation of cardiac Ca V 1.2 and K V 4.2/4.3 throughout the daily cycle may play an important role in physiopathology of heart function.
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Maas DA, Manot-Saillet B, Bun P, Habermacher C, Poilbout C, Rusconi F, Angulo MC. Versatile and automated workflow for the analysis of oligodendroglial calcium signals. Cell Mol Life Sci 2024; 81:15. [PMID: 38194116 PMCID: PMC11073395 DOI: 10.1007/s00018-023-05065-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 11/20/2023] [Accepted: 11/27/2023] [Indexed: 01/10/2024]
Abstract
Although intracellular Ca2+ signals of oligodendroglia, the myelin-forming cells of the central nervous system, regulate vital cellular processes including myelination, few studies on oligodendroglia Ca2+ signal dynamics have been carried out and existing software solutions are not adapted to the analysis of the complex Ca2+ signal characteristics of these cells. Here, we provide a comprehensive solution to analyze oligodendroglia Ca2+ imaging data at the population and single-cell levels. We describe a new analytical pipeline containing two free, open source and cross-platform software programs, Occam and post-prOccam, that enable the fully automated analysis of one- and two-photon Ca2+ imaging datasets from oligodendroglia obtained by either ex vivo or in vivo Ca2+ imaging techniques. Easily configurable, our software solution is optimized to obtain unbiased results from large datasets acquired with different imaging techniques. Compared to other recent software, our solution proved to be fast, low memory demanding and faithful in the analysis of oligodendroglial Ca2+ signals in all tested imaging conditions. Our versatile and accessible Ca2+ imaging data analysis tool will facilitate the elucidation of Ca2+-mediated mechanisms in oligodendroglia. Its configurability should also ensure its suitability with new use cases such as other glial cell types or even cells outside the CNS.
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Affiliation(s)
- Dorien A Maas
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, "Team: Interactions Between Neurons and Oligodendroglia in Myelination and Myelin Repair", 75014, Paris, France
| | - Blandine Manot-Saillet
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, "Team: Interactions Between Neurons and Oligodendroglia in Myelination and Myelin Repair", 75014, Paris, France
| | - Philippe Bun
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, "NeurImag Platform", 75014, Paris, France
| | - Chloé Habermacher
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, "Team: Interactions Between Neurons and Oligodendroglia in Myelination and Myelin Repair", 75014, Paris, France
- SynapCell, Bâtiment Synergy Zac Isiparc, 38330, Saint Ismier, France
| | - Corinne Poilbout
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, "Team: Interactions Between Neurons and Oligodendroglia in Myelination and Myelin Repair", 75014, Paris, France
| | - Filippo Rusconi
- IDEEV, GQE, Université Paris-Saclay, CNRS, INRAE, AgroParisTech, 12, Route 128, 91272, Gif-sur-Yvette, France
- Centre de Recherche des Cordeliers, Sorbonne Université, INSERM, Université Paris Cité, 75006, Paris, France
| | - Maria Cecilia Angulo
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, "Team: Interactions Between Neurons and Oligodendroglia in Myelination and Myelin Repair", 75014, Paris, France.
- GHU PARIS Psychiatrie and Neurosciences, 75014, Paris, France.
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Affiliation(s)
- Patrick Delmas
- SomatoSens, Laboratoire de Neurosciences Cognitives, UMR 7291 CNRS, Aix-Marseille-Université, CS80011, boulevard Pierre Dramard, 13344 Marseille, France
| | - Françoise Padilla
- SomatoSens, Laboratoire de Neurosciences Cognitives, UMR 7291 CNRS, Aix-Marseille-Université, CS80011, boulevard Pierre Dramard, 13344 Marseille, France
| | - Corinne Poilbout
- Centre de Psychiatrie et Neurosciences, 102-108, rue de la Santé, 75014 Paris France
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Amsalem M, Poilbout C, Ferracci G, Delmas P, Padilla F. Membrane cholesterol depletion as a trigger of Nav1.9 channel-mediated inflammatory pain. EMBO J 2018; 37:embj.201797349. [PMID: 29459435 DOI: 10.15252/embj.201797349] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 12/15/2017] [Accepted: 12/22/2017] [Indexed: 11/09/2022] Open
Abstract
Cholesterol is a major lipid component of the mammalian plasma membrane. While much is known about its metabolism, its transport, and its role in atherosclerotic vascular disease, less is known about its role in neuronal pathophysiology. This study reveals an unexpected function of cholesterol in controlling pain transmission. We show that inflammation lowers cholesterol content in skin tissue and sensory DRG culture. Pharmacological depletion of cellular cholesterol entails sensitization of nociceptive neurons and promotes mechanical and thermal hyperalgesia through the activation of voltage-gated Nav1.9 channels. Inflammatory mediators enhance the production of reactive oxygen species and induce partitioning of Nav1.9 channels from cholesterol-rich lipid rafts to cholesterol-poor non-raft regions of the membrane. Low-cholesterol environment enhances voltage-dependent activation of Nav1.9 channels leading to enhanced neuronal excitability, whereas cholesterol replenishment reversed these effects. Consistently, we show that transcutaneous delivery of cholesterol alleviates hypersensitivity in animal models of acute and chronic inflammatory pain. In conclusion, our data establish that membrane cholesterol is a modulator of pain transmission and shed a new light on the relationship between cholesterol homeostasis, inflammation, and pain.
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Affiliation(s)
- Muriel Amsalem
- CNRS, Laboratoire de Neuroscience Cognitive (LNC) UMR 7291, Aix-Marseille-Université, Marseille Cedex 3, France
| | - Corinne Poilbout
- CNRS, Laboratoire de Neuroscience Cognitive (LNC) UMR 7291, Aix-Marseille-Université, Marseille Cedex 3, France
| | - Géraldine Ferracci
- CNRS, Laboratoire de Neuroscience Cognitive (LNC) UMR 7291, Aix-Marseille-Université, Marseille Cedex 3, France
| | - Patrick Delmas
- CNRS, Laboratoire de Neuroscience Cognitive (LNC) UMR 7291, Aix-Marseille-Université, Marseille Cedex 3, France
| | - Francoise Padilla
- CNRS, Laboratoire de Neuroscience Cognitive (LNC) UMR 7291, Aix-Marseille-Université, Marseille Cedex 3, France
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Stragier E, Martin V, Davenas E, Poilbout C, Mongeau R, Corradetti R, Lanfumey L. Brain plasticity and cognitive functions after ethanol consumption in C57BL/6J mice. Transl Psychiatry 2015; 5:e696. [PMID: 26670281 PMCID: PMC5068583 DOI: 10.1038/tp.2015.183] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Revised: 09/23/2015] [Accepted: 10/09/2015] [Indexed: 12/20/2022] Open
Abstract
Acute or chronic administrations of high doses of ethanol in mice are known to produce severe cognitive deficits linked to hippocampal damage. However, we recently reported that chronic and moderate ethanol intake in C57BL/6J mice induced chromatin remodeling within the Bdnf promoters, leading to both enhanced brain-derived neurotrophic factor (BDNF) expression and hippocampal neurogenesis under free-choice protocol. We performed here a series of cellular and behavioral studies to analyze the consequences of these modifications. We showed that a 3-week chronic free-choice ethanol consumption in C57BL/6J mice led to a decrease in DNA methylation of the Bdnf gene within the CA1 and CA3 subfields of the hippocampus, and upregulated hippocampal BDNF signaling pathways mediated by ERK, AKT and CREB. However, this activation did not affect long-term potentiation in the CA1. Conversely, ethanol intake impaired learning and memory capacities analyzed in the contextual fear conditioning test and the novel object recognition task. In addition, ethanol increased behavioral perseveration in the Barnes maze test but did not alter the mouse overall spatial capacities. These data suggested that in conditions of chronic and moderate ethanol intake, the chromatin remodeling leading to BDNF signaling upregulation is probably an adaptive process, engaged via epigenetic regulations, to counteract the cognitive deficits induced by ethanol.
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Affiliation(s)
- E Stragier
- Centre de Psychiatrie et Neurosciences, INSERM UMR 894, Paris, France
- Université Paris Descartes, UMR S894, Paris, France
| | - V Martin
- Centre de Psychiatrie et Neurosciences, INSERM UMR 894, Paris, France
- Université Paris Descartes, UMR S894, Paris, France
| | - E Davenas
- Centre de Psychiatrie et Neurosciences, INSERM UMR 894, Paris, France
- Université Paris Descartes, UMR S894, Paris, France
| | - C Poilbout
- Centre de Psychiatrie et Neurosciences, INSERM UMR 894, Paris, France
- Université Paris Descartes, UMR S894, Paris, France
| | - R Mongeau
- Université Paris Descartes, UMR S894, Paris, France
- Pharmacologie de la circulation cérébrale EA 4475, Faculté de pharmacie Université Paris Descartes, Paris, France
| | - R Corradetti
- Department of Neuroscience, Psychology, Drug Research and Child Health, University of Florence, Florence, Italy
| | - L Lanfumey
- Centre de Psychiatrie et Neurosciences, INSERM UMR 894, Paris, France
- Université Paris Descartes, UMR S894, Paris, France
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