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Crisci I, Bonzano S, Nicolas Z, Dallorto E, Peretto P, Krezel W, De Marchis S. Tamoxifen exerts direct and microglia-mediated effects preventing neuroinflammatory changes in the adult mouse hippocampal neurogenic niche. Glia 2024. [PMID: 38515286 DOI: 10.1002/glia.24526] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 02/27/2024] [Accepted: 03/05/2024] [Indexed: 03/23/2024]
Abstract
Tamoxifen-inducible systems are widely used in research to control Cre-mediated gene deletion in genetically modified animals. Beyond Cre activation, tamoxifen also exerts off-target effects, whose consequences are still poorly addressed. Here, we investigated the impact of tamoxifen on lipopolysaccharide (LPS)-induced neuroinflammatory responses, focusing on the neurogenic activity in the adult mouse dentate gyrus. We demonstrated that a four-day LPS treatment led to an increase in microglia, astrocytes and radial glial cells with concomitant reduction of newborn neurons. These effects were counteracted by a two-day tamoxifen pre-treatment. Through selective microglia depletion, we elucidated that both LPS and tamoxifen influenced astrogliogenesis via microglia mediated mechanisms, while the effects on neurogenesis persisted even in a microglia-depleted environment. Notably, changes in radial glial cells resulted from a combination of microglia-dependent and -independent mechanisms. Overall, our data reveal that tamoxifen treatment per se does not alter the balance between adult neurogenesis and astrogliogenesis but does modulate cellular responses to inflammatory stimuli exerting a protective role within the adult hippocampal neurogenic niche.
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Affiliation(s)
- Isabella Crisci
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
- NICO-Neuroscience Institute Cavalieri Ottolenghi, University of Turin, Orbassano, Italy
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, INSERM U1258, CNRS UMR 7104, Université de Strasbourg, Illkirch, France
| | - Sara Bonzano
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
- NICO-Neuroscience Institute Cavalieri Ottolenghi, University of Turin, Orbassano, Italy
| | - Zinter Nicolas
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, INSERM U1258, CNRS UMR 7104, Université de Strasbourg, Illkirch, France
| | - Eleonora Dallorto
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
- NICO-Neuroscience Institute Cavalieri Ottolenghi, University of Turin, Orbassano, Italy
| | - Paolo Peretto
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
- NICO-Neuroscience Institute Cavalieri Ottolenghi, University of Turin, Orbassano, Italy
| | - Wojciech Krezel
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, INSERM U1258, CNRS UMR 7104, Université de Strasbourg, Illkirch, France
| | - Silvia De Marchis
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
- NICO-Neuroscience Institute Cavalieri Ottolenghi, University of Turin, Orbassano, Italy
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Bonzano S, Dallorto E, Molineris I, Michelon F, Crisci I, Gambarotta G, Neri F, Oliviero S, Beckervordersandforth R, Lie DC, Peretto P, Bovetti S, Studer M, De Marchis S. Nr2f1 shapes mitochondria in the mouse brain unraveling new insights into the neurodevelopmental disorder BBSOAS. Dis Model Mech 2023:312547. [PMID: 37260288 DOI: 10.1242/dmm.049854] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 05/09/2023] [Indexed: 06/02/2023] Open
Abstract
The nuclear receptor Nr2f1 acts as a strong transcriptional regulator in embryonic and postnatal neural cells. In humans, mutations in the NR2F1 gene cause the Bosch-Boonstra-Schaaf Optic Atrophy-intellectual Syndrome (BBSOAS), a rare neurodevelopmental disorder characterized by multiple clinical features including vision impairments, intellectual disability, and autistic traits. In this study, we identified, by genome-wide and in silico analyses, a wide set of nuclear-encoded mitochondrial genes as potential genomic targets under direct Nr2f1 transcriptional control in neurons. By combining mouse genetics, neuroanatomical and imaging approaches we demonstrated that conditional Nr2f1 loss-of-function within the adult mouse hippocampal neurogenic niche results in a reduced mitochondrial mass associated with mitochondrial fragmentation and downregulation of key mitochondrial proteins in newborn neurons, whose functional integration and survival are impaired. Importantly, we also found dysregulation of several nuclear-encoded mitochondrial genes and downregulation of key mitochondrial proteins in the brain of Nr2f1-heterozygous mice, a validated BBSOAS model. Our data point to an active role of Nr2f1 in the mitochondrial gene expression regulatory network in neurons and support the involvement of mitochondrial dysfunction in BBSOAS pathogenesis.
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Affiliation(s)
- Sara Bonzano
- Department of Life Sciences and Systems Biology (DBIOS), University of Turin, Via Accademia Albertina 13, Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, Orbassano (Turin), Italy
| | - Eleonora Dallorto
- Department of Life Sciences and Systems Biology (DBIOS), University of Turin, Via Accademia Albertina 13, Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, Orbassano (Turin), Italy
| | - Ivan Molineris
- Department of Life Sciences and Systems Biology (DBIOS), University of Turin, Via Accademia Albertina 13, Turin, Italy
- IIGM Foundation-Italian Institute for Genomic Medicine, Turin, Italy
| | - Filippo Michelon
- Department of Life Sciences and Systems Biology (DBIOS), University of Turin, Via Accademia Albertina 13, Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, Orbassano (Turin), Italy
| | - Isabella Crisci
- Department of Life Sciences and Systems Biology (DBIOS), University of Turin, Via Accademia Albertina 13, Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, Orbassano (Turin), Italy
| | - Giovanna Gambarotta
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, Orbassano (Turin), Italy
- Department of Clinical and Biological Sciences (DSCB), Regione Gonzole 10, Orbassano (Turin), Italy
| | - Francesco Neri
- Department of Life Sciences and Systems Biology (DBIOS), University of Turin, Via Accademia Albertina 13, Turin, Italy
- IIGM Foundation-Italian Institute for Genomic Medicine, Turin, Italy
| | - Salvatore Oliviero
- Department of Life Sciences and Systems Biology (DBIOS), University of Turin, Via Accademia Albertina 13, Turin, Italy
- IIGM Foundation-Italian Institute for Genomic Medicine, Turin, Italy
| | - Ruth Beckervordersandforth
- Institut für Biochemie, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Fahrstrasse 17, Erlangen, Germany
| | - Dieter Chichung Lie
- Institut für Biochemie, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Fahrstrasse 17, Erlangen, Germany
| | - Paolo Peretto
- Department of Life Sciences and Systems Biology (DBIOS), University of Turin, Via Accademia Albertina 13, Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, Orbassano (Turin), Italy
| | - Serena Bovetti
- Department of Life Sciences and Systems Biology (DBIOS), University of Turin, Via Accademia Albertina 13, Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, Orbassano (Turin), Italy
| | - Michèle Studer
- Institute de Biologie Valrose (iBV), Université Côte d'Azur (UCA), CNRS 7277, Inserm 1091, Avenue Valrose 28, Nice, France
| | - Silvia De Marchis
- Department of Life Sciences and Systems Biology (DBIOS), University of Turin, Via Accademia Albertina 13, Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, Orbassano (Turin), Italy
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Scandiffio R, Bonzano S, Cottone E, Shrestha S, Bossi S, De Marchis S, Maffei ME, Bovolin P. Beta-Caryophyllene Modifies Intracellular Lipid Composition in a Cell Model of Hepatic Steatosis by Acting through CB2 and PPAR Receptors. Int J Mol Sci 2023; 24:ijms24076060. [PMID: 37047034 PMCID: PMC10094507 DOI: 10.3390/ijms24076060] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/15/2023] [Accepted: 03/20/2023] [Indexed: 04/14/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver disease; however, no specific pharmacological therapy has yet been approved for this condition. Plant-derived extracts can be an important source for the development of new drugs. The aim of this study was to investigate the effects of (E)-β-caryophyllene (BCP), a phytocannabinoid recently found to be beneficial against metabolic diseases, on HepG2 steatotic hepatocytes. Using a fluorescence-based lipid quantification assay and GC-MS analysis, we show that BCP is able to decrease lipid accumulation in steatotic conditions and to change the typical steatotic lipid profile by primarily reducing saturated fatty acids. By employing specific antagonists, we demonstrate that BCP action is mediated by multiple receptors: CB2 cannabinoid receptor, peroxisome proliferator-activated receptor α (PPARα) and γ (PPARγ). Interestingly, BCP was able to counteract the increase in CB2 and the reduction in PPARα receptor expression observed in steatotic conditions. Moreover, through immunofluorescence and confocal microscopy, we demonstrate that CB2 receptors are mainly intracellularly localized and that BCP is internalized in HepG2 cells with a maximum peak at 2 h, suggesting a direct interaction with intracellular receptors. The results obtained with BCP in normal and steatotic hepatocytes encourage future applications in the treatment of NAFLD.
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Affiliation(s)
- Rosaria Scandiffio
- Cell Biology Unit, Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123 Turin, Italy
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, University of Turin, Via Quarello 15/a, 10135 Turin, Italy
| | - Sara Bonzano
- Cell Biology Unit, Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123 Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, Orbassano, 10043 Turin, Italy
| | - Erika Cottone
- Cell Biology Unit, Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123 Turin, Italy
| | - Sujata Shrestha
- Cell Biology Unit, Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123 Turin, Italy
| | - Simone Bossi
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, University of Turin, Via Quarello 15/a, 10135 Turin, Italy
| | - Silvia De Marchis
- Cell Biology Unit, Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123 Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Regione Gonzole 10, Orbassano, 10043 Turin, Italy
| | - Massimo E Maffei
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, University of Turin, Via Quarello 15/a, 10135 Turin, Italy
| | - Patrizia Bovolin
- Cell Biology Unit, Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123 Turin, Italy
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Oberto A, Bertocchi I, Longo A, Bonzano S, Paterlini S, Meda C, Della Torre S, Palanza P, Maggi A, Eva C. Hypothalamic NPY-Y1R Interacts with Gonadal Hormones in Protecting Female Mice against Obesity and Neuroinflammation. Int J Mol Sci 2022; 23:ijms23116351. [PMID: 35683029 PMCID: PMC9180984 DOI: 10.3390/ijms23116351] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 06/02/2022] [Accepted: 06/04/2022] [Indexed: 02/04/2023] Open
Abstract
We previously demonstrated that Npy1rrfb mice, which carry the conditional inactivation of the Npy1r gene in forebrain principal neurons, display a sexually dimorphic phenotype, with male mice showing metabolic, hormonal and behavioral effects and females being only marginally affected. Moreover, exposure of Npy1rrfb male mice to a high-fat diet (HFD) increased body weight growth, adipose tissue, blood glucose levels and caloric intake compared to Npy1r2lox male controls. We used conditional knockout Npy1rrfb and Npy1r2lox control mice to examine whether forebrain disruption of the Npy1r gene affects susceptibility to obesity and associated disorders of cycling and ovariectomized (ovx) female mice in a standard diet (SD) regimen or exposed to an HFD for 3 months. The conditional deletion of the Npy1r gene increased body weight and subcutaneous white adipose tissue weight in both SD- and HFD-fed ovx females but not in cycling females. Moreover, compared with ovx control females on the same diet regimen, Npy1rrfb females displayed increased microglia number and activation, increased expression of Neuropeptide Y (NPY)-immunoreactivity (IR) and decreased expression of proopiomelanocortin-IR in the hypothalamic arcuate nucleus (ARC). These results suggest that in the ARC NPY-Y1R reduces the susceptibility to obesity of female mice with low levels of gonadal hormones and that this effect may be mediated via NPY-Y1R ability to protect the brain against neuroinflammation.
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Affiliation(s)
- Alessandra Oberto
- Neuroscience Institute of the Cavalieri-Ottolenghi Foundation, Regione Gonzole 10, Orbassano, 10043 Turin, Italy; (A.O.); (I.B.); (A.L.); (S.B.)
- Department of Neuroscience, University of Turin, C.so Massimo d’Azeglio 52, 10126 Turin, Italy
- Neuroscience Institute of Turin, Regione Gonzole 10, Orbassano, 10043 Turin, Italy
| | - Ilaria Bertocchi
- Neuroscience Institute of the Cavalieri-Ottolenghi Foundation, Regione Gonzole 10, Orbassano, 10043 Turin, Italy; (A.O.); (I.B.); (A.L.); (S.B.)
- Department of Neuroscience, University of Turin, C.so Massimo d’Azeglio 52, 10126 Turin, Italy
- Neuroscience Institute of Turin, Regione Gonzole 10, Orbassano, 10043 Turin, Italy
| | - Angela Longo
- Neuroscience Institute of the Cavalieri-Ottolenghi Foundation, Regione Gonzole 10, Orbassano, 10043 Turin, Italy; (A.O.); (I.B.); (A.L.); (S.B.)
| | - Sara Bonzano
- Neuroscience Institute of the Cavalieri-Ottolenghi Foundation, Regione Gonzole 10, Orbassano, 10043 Turin, Italy; (A.O.); (I.B.); (A.L.); (S.B.)
- Department of Life Sciences and Systems Biology (DBIOS), University of Turin, Via Accademia Albertina 13, 10123 Turin, Italy
| | - Silvia Paterlini
- Department of Medicine and Surgery, University of Parma, Behavioral Biology Lab—Parco Area delle Scienze 11A, 43124 Parma, Italy; (S.P.); (P.P.)
| | - Clara Meda
- Department of Pharmaceutical Sciences, University of Milan, Via Balzaretti 9, 20133 Milan, Italy; (C.M.); (S.D.T.); (A.M.)
| | - Sara Della Torre
- Department of Pharmaceutical Sciences, University of Milan, Via Balzaretti 9, 20133 Milan, Italy; (C.M.); (S.D.T.); (A.M.)
- Center of Excellence on Neurodegenerative Diseases, University of Milan, Via Balzaretti 9, 20133 Milan, Italy
| | - Paola Palanza
- Department of Medicine and Surgery, University of Parma, Behavioral Biology Lab—Parco Area delle Scienze 11A, 43124 Parma, Italy; (S.P.); (P.P.)
| | - Adriana Maggi
- Department of Pharmaceutical Sciences, University of Milan, Via Balzaretti 9, 20133 Milan, Italy; (C.M.); (S.D.T.); (A.M.)
- Center of Excellence on Neurodegenerative Diseases, University of Milan, Via Balzaretti 9, 20133 Milan, Italy
| | - Carola Eva
- Neuroscience Institute of the Cavalieri-Ottolenghi Foundation, Regione Gonzole 10, Orbassano, 10043 Turin, Italy; (A.O.); (I.B.); (A.L.); (S.B.)
- Department of Neuroscience, University of Turin, C.so Massimo d’Azeglio 52, 10126 Turin, Italy
- Neuroscience Institute of Turin, Regione Gonzole 10, Orbassano, 10043 Turin, Italy
- Correspondence: ; Tel.: +39-011-6706608
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Malloul H, Bonzano S, Bennis M, De Marchis S, Ba-M'hamed S. Chronic thinner inhalation alters olfactory behaviors in adult mice. Behav Brain Res 2022; 417:113597. [PMID: 34563601 DOI: 10.1016/j.bbr.2021.113597] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 04/14/2021] [Revised: 09/01/2021] [Accepted: 09/20/2021] [Indexed: 12/17/2022]
Abstract
Volatile solvents exposure can result in various behavioral impairments that have been partly associated to altered adult hippocampal neurogenesis. Despite recent evidence supporting this association, few studies have been devoted to examine the impact on olfactory functioning and olfactory bulb (OB) neurogenesis, although olfactory system is directly in contact with volatile molecules. Thus, this study was designed to evaluate in adult mice the potential modifications of the olfactory functioning after acute (1 day), subchronic (6 weeks) and chronic (12 weeks) exposure to thinner vapor at both behavioral and cellular levels. Firstly, behavioral evaluations showed that chronic thinner exposure impacts on odor detection ability of treated mice but does not affect mice ability to efficiently discriminate between two different odors. Moreover, chronic thinner exposure produces impairment in the olfactory-mediated associative memory. Secondly, analysis of the effects of thinner exposure in the subventricular zone (SVZ) of the lateral ventricle and in the OB revealed that thinner treatments do not induce apoptosis nor glial activation. Thirdly, immunohistochemical quantification of different markers of adult olfactory neurogenesis showed that inhalant treatments do not change the number of proliferating progenitors in the SVZ and the rostral migratory stream (RMS), as well as the number of newborn cells reaching and integrating in the OB circuitry. Altogether, our data highlight that the impaired olfactory performances in chronically-exposed mice are not associated to an alteration of adult neurogenesis in the SVZ-OB system.
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Affiliation(s)
- Hanaa Malloul
- Laboratory of Pharmacology, Neurobiology, Anthropobiology and Environment, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakech, Morocco; Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy; Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, Italy
| | - Sara Bonzano
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy; Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, Italy
| | - Mohammed Bennis
- Laboratory of Pharmacology, Neurobiology, Anthropobiology and Environment, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakech, Morocco.
| | - Silvia De Marchis
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy; Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, Italy
| | - Saadia Ba-M'hamed
- Laboratory of Pharmacology, Neurobiology, Anthropobiology and Environment, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakech, Morocco
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Trova S, Bovetti S, Bonzano S, De Marchis S, Peretto P. Sex Steroids and the Shaping of the Peripubertal Brain: The Sexual-Dimorphic Set-Up of Adult Neurogenesis. Int J Mol Sci 2021; 22:ijms22157984. [PMID: 34360747 PMCID: PMC8347822 DOI: 10.3390/ijms22157984] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/19/2021] [Accepted: 07/21/2021] [Indexed: 12/29/2022] Open
Abstract
Steroid hormones represent an amazing class of molecules that play pleiotropic roles in vertebrates. In mammals, during postnatal development, sex steroids significantly influence the organization of sexually dimorphic neural circuits underlying behaviors critical for survival, such as the reproductive one. During the last decades, multiple studies have shown that many cortical and subcortical brain regions undergo sex steroid-dependent structural organization around puberty, a critical stage of life characterized by high sensitivity to external stimuli and a profound structural and functional remodeling of the organism. Here, we first give an overview of current data on how sex steroids shape the peripubertal brain by regulating neuroplasticity mechanisms. Then, we focus on adult neurogenesis, a striking form of persistent structural plasticity involved in the control of social behaviors and regulated by a fine-tuned integration of external and internal cues. We discuss recent data supporting that the sex steroid-dependent peripubertal organization of neural circuits involves a sexually dimorphic set-up of adult neurogenesis that in turn could be relevant for sex-specific reproductive behaviors.
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Affiliation(s)
- Sara Trova
- Department of Life Sciences and Systems Biology (DBIOS), University of Torino, 10123 Turin, Italy; (S.T.); (S.B.); (S.B.); (S.D.M.)
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, 10043 Turin, Italy
| | - Serena Bovetti
- Department of Life Sciences and Systems Biology (DBIOS), University of Torino, 10123 Turin, Italy; (S.T.); (S.B.); (S.B.); (S.D.M.)
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, 10043 Turin, Italy
| | - Sara Bonzano
- Department of Life Sciences and Systems Biology (DBIOS), University of Torino, 10123 Turin, Italy; (S.T.); (S.B.); (S.B.); (S.D.M.)
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, 10043 Turin, Italy
| | - Silvia De Marchis
- Department of Life Sciences and Systems Biology (DBIOS), University of Torino, 10123 Turin, Italy; (S.T.); (S.B.); (S.B.); (S.D.M.)
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, 10043 Turin, Italy
| | - Paolo Peretto
- Department of Life Sciences and Systems Biology (DBIOS), University of Torino, 10123 Turin, Italy; (S.T.); (S.B.); (S.B.); (S.D.M.)
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, 10043 Turin, Italy
- Correspondence:
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Brosset A, Islam M, Bonzano S, Maffei ME, Blande JD. Exposure to (Z)-11-hexadecenal [(Z)-11-16:Ald] increases Brassica nigra susceptibility to subsequent herbivory. Sci Rep 2021; 11:13532. [PMID: 34188152 PMCID: PMC8242006 DOI: 10.1038/s41598-021-93052-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 06/21/2021] [Indexed: 12/16/2022] Open
Abstract
It is well established that plants emit, detect and respond to volatile organic compounds; however, knowledge on the ability of plants to detect and respond to volatiles emitted by non-plant organisms is limited. Recent studies indicated that plants detect insect-emitted volatiles that induce defence responses; however, the mechanisms underlying this detection and defence priming is unknown. Therefore, we explored if exposure to a main component of Plutella xylostella female sex pheromone namely (Z)-11-hexadecenal [(Z)-11-16:Ald] induced detectable early and late stage defence-related plant responses in Brassica nigra. Exposure to biologically relevant levels of vapourised (Z)-11-16:Ald released from a loaded septum induced a change in volatile emissions of receiver plants after herbivore attack and increased the leaf area consumed by P. xylostella larvae. Further experiments examining the effects of the (Z)-11-16:Ald on several stages of plant defence-related responses showed that exposure to 100 ppm of (Z)-11-16:Ald in liquid state induced depolarisation of the transmembrane potential (Vm), an increase in cytosolic calcium concentration [Ca2+]cyt, production of H2O2 and an increase in expression of reactive oxygen species (ROS)-mediated genes and ROS-scavenging enzyme activity. The results suggest that exposure to volatile (Z)-11-16:Ald increases the susceptibility of B. nigra to subsequent herbivory. This unexpected finding, suggest alternative ecological effects of detecting insect pheromone to those reported earlier. Experiments conducted in vitro showed that high doses of (Z)-11-16:Ald induced defence-related responses, but further experiments should assess how specific the response is to this particular aldehyde.
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Affiliation(s)
- Agnès Brosset
- Department of Environmental and Biological Sciences, University of Eastern Finland, Yliopistonranta 1 E, N70211, Kuopio, Finland.
| | - Monirul Islam
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, University of Turin, Via Quarello 15/A, 10135, Turin, Italy.,Department of Sustainable Crop Production, Università Cattolica Del Sacro Cuore, Via Emilia Parmense 84, 29122, Piacenza, Italy
| | - Sara Bonzano
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, University of Turin, Via Quarello 15/A, 10135, Turin, Italy.,Neuroscience Institute Cavalieri Ottolenghi (NICO) Regione Gonzole, 10 - 10043, Orbassano (TO), Italy
| | - Massimo E Maffei
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, University of Turin, Via Quarello 15/A, 10135, Turin, Italy
| | - James D Blande
- Department of Environmental and Biological Sciences, University of Eastern Finland, Yliopistonranta 1 E, N70211, Kuopio, Finland
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Gribaudo S, Saraulli D, Nato G, Bonzano S, Gambarotta G, Luzzati F, Costanzi M, Peretto P, Bovetti S, De Marchis S. Neurogranin Regulates Adult-Born Olfactory Granule Cell Spine Density and Odor-Reward Associative Memory in Mice. Int J Mol Sci 2021; 22:ijms22084269. [PMID: 33924098 PMCID: PMC8074334 DOI: 10.3390/ijms22084269] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/14/2021] [Accepted: 04/16/2021] [Indexed: 11/16/2022] Open
Abstract
Neurogranin (Ng) is a brain-specific postsynaptic protein, whose role in modulating Ca2+/calmodulin signaling in glutamatergic neurons has been linked to enhancement in synaptic plasticity and cognitive functions. Accordingly, Ng knock-out (Ng-ko) mice display hippocampal-dependent learning and memory impairments associated with a deficit in long-term potentiation induction. In the adult olfactory bulb (OB), Ng is expressed by a large population of GABAergic granule cells (GCs) that are continuously generated during adult life, undergo high synaptic remodeling in response to the sensory context, and play a key role in odor processing. However, the possible implication of Ng in OB plasticity and function is yet to be investigated. Here, we show that Ng expression in the OB is associated with the mature state of adult-born GCs, where its active-phosphorylated form is concentrated at post-synaptic sites. Constitutive loss of Ng in Ng-ko mice resulted in defective spine density in adult-born GCs, while their survival remained unaltered. Moreover, Ng-ko mice show an impaired odor-reward associative memory coupled with reduced expression of the activity-dependent transcription factor Zif268 in olfactory GCs. Overall, our data support a role for Ng in the molecular mechanisms underlying GC plasticity and the formation of olfactory associative memory.
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Affiliation(s)
- Simona Gribaudo
- Department of Life Sciences and Systems Biology (DBIOS), University of Torino, 10123 Turin, Italy; (S.G.); (G.N.); (S.B.); (F.L.); (P.P.)
| | - Daniele Saraulli
- Institute of Cell Biology and Neurobiology (IBCN), National Research Council, 00143 Rome, Italy;
| | - Giulia Nato
- Department of Life Sciences and Systems Biology (DBIOS), University of Torino, 10123 Turin, Italy; (S.G.); (G.N.); (S.B.); (F.L.); (P.P.)
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, 10043 Turin, Italy;
| | - Sara Bonzano
- Department of Life Sciences and Systems Biology (DBIOS), University of Torino, 10123 Turin, Italy; (S.G.); (G.N.); (S.B.); (F.L.); (P.P.)
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, 10043 Turin, Italy;
| | - Giovanna Gambarotta
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, 10043 Turin, Italy;
- Department of Clinical and Biological Sciences (DSCB), University of Torino, 10043 Turin, Italy
| | - Federico Luzzati
- Department of Life Sciences and Systems Biology (DBIOS), University of Torino, 10123 Turin, Italy; (S.G.); (G.N.); (S.B.); (F.L.); (P.P.)
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, 10043 Turin, Italy;
| | - Marco Costanzi
- Department of Human Sciences, LUMSA University, 00193 Rome, Italy;
| | - Paolo Peretto
- Department of Life Sciences and Systems Biology (DBIOS), University of Torino, 10123 Turin, Italy; (S.G.); (G.N.); (S.B.); (F.L.); (P.P.)
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, 10043 Turin, Italy;
| | - Serena Bovetti
- Department of Life Sciences and Systems Biology (DBIOS), University of Torino, 10123 Turin, Italy; (S.G.); (G.N.); (S.B.); (F.L.); (P.P.)
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, 10043 Turin, Italy;
- Correspondence: (S.B.); (S.D.M.)
| | - Silvia De Marchis
- Department of Life Sciences and Systems Biology (DBIOS), University of Torino, 10123 Turin, Italy; (S.G.); (G.N.); (S.B.); (F.L.); (P.P.)
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, 10043 Turin, Italy;
- Correspondence: (S.B.); (S.D.M.)
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9
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Trova S, Bovetti S, Pellegrino G, Bonzano S, Giacobini P, Peretto P. HPG-Dependent Peri-Pubertal Regulation of Adult Neurogenesis in Mice. Front Neuroanat 2020; 14:584493. [PMID: 33328903 PMCID: PMC7732626 DOI: 10.3389/fnana.2020.584493] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 10/29/2020] [Indexed: 11/13/2022] Open
Abstract
Adult neurogenesis, a striking form of neural plasticity, is involved in the modulation of social stimuli driving reproduction. Previous studies on adult neurogenesis have shown that this process is significantly modulated around puberty in female mice. Puberty is a critical developmental period triggered by increased secretion of the gonadotropin releasing hormone (GnRH), which controls the activity of the hypothalamic-pituitary-gonadal axis (HPG). Secretion of HPG-axis factors at puberty participates to the refinement of neural circuits that govern reproduction. Here, by exploiting a transgenic GnRH deficient mouse model, that progressively loses GnRH expression during postnatal development (GnRH::Cre;Dicer loxP/loxP mice), we found that a postnatally-acquired dysfunction in the GnRH system affects adult neurogenesis selectively in the subventricular-zone neurogenic niche in a sexually dimorphic way. Moreover, by examining adult females ovariectomized before the onset of puberty, we provide important evidence that, among the HPG-axis secreting factors, the circulating levels of gonadal hormones during pre-/peri-pubertal life contribute to set-up the proper adult subventricular zone-olfactory bulb neurogenic system.
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Affiliation(s)
- Sara Trova
- Department of Life Sciences and Systems Biology, Neuroscience Institute Cavalieri Ottolenghi, University of Torino, Orbassano, Italy.,Univ.Lille, Inserm, CHU Lille, U1172 - LilNCog - Lille Neuroscience and Cognition, Laboratory of the Development and Plasticity of Neuroendocrine Brain, Lille, France
| | - Serena Bovetti
- Department of Life Sciences and Systems Biology, Neuroscience Institute Cavalieri Ottolenghi, University of Torino, Orbassano, Italy
| | - Giuliana Pellegrino
- Univ.Lille, Inserm, CHU Lille, U1172 - LilNCog - Lille Neuroscience and Cognition, Laboratory of the Development and Plasticity of Neuroendocrine Brain, Lille, France
| | - Sara Bonzano
- Department of Life Sciences and Systems Biology, Neuroscience Institute Cavalieri Ottolenghi, University of Torino, Orbassano, Italy
| | - Paolo Giacobini
- Univ.Lille, Inserm, CHU Lille, U1172 - LilNCog - Lille Neuroscience and Cognition, Laboratory of the Development and Plasticity of Neuroendocrine Brain, Lille, France
| | - Paolo Peretto
- Department of Life Sciences and Systems Biology, Neuroscience Institute Cavalieri Ottolenghi, University of Torino, Orbassano, Italy
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10
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Malloul H, Bennis M, Bonzano S, Gambarotta G, Perroteau I, De Marchis S, Ba-M'hamed S. Decreased Hippocampal Neuroplasticity and Behavioral Impairment in an Animal Model of Inhalant Abuse. Front Neurosci 2018; 12:35. [PMID: 29472835 PMCID: PMC5810293 DOI: 10.3389/fnins.2018.00035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2017] [Accepted: 01/15/2018] [Indexed: 12/22/2022] Open
Abstract
Thinners are highly toxic chemicals widely employed as organic solvents in industrial and domestic use. They have psychoactive properties when inhaled, and their chronic abuse as inhalants is associated with severe long-term health effects, including brain damage and cognitive-behavioral alterations. Yet, the sites and mechanisms of action of these compounds on the brain are far from being fully understood. Here, we investigated the consequences of paint thinner inhalation in adult male mice. Depression-like behaviors and an anxiolytic effect were found following repeated exposure in chronic treatments lasting 12 weeks. Both subchronic (6 weeks) and chronic treatments impaired learning and memory functions, while no changes were observed after acute treatment. To investigate possible molecular/structural alterations underlying such behavioral changes, we focused on the hippocampus. Notably, prolonged, but not acute thinner inhalation strongly affected adult neurogenesis in the dentate gyrus (DG), reducing progenitor cell proliferation after chronic treatments and impairing the survival of newborn neurons following both chronic and subchronic treatments. Furthermore, a down-regulation in the expression of BDNF and NMDA receptor subunits as well as a reduction in CREB expression/phosphorylation were found in the hippocampi of chronically treated mice. Our findings demonstrate for the first time significant structural and molecular changes in the adult hippocampus after prolonged paint thinner inhalation, indicating reduced hippocampal neuroplasticity and strongly supporting its implication in the behavioral dysfunctions associated to inhalant abuse.
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Affiliation(s)
- Hanaa Malloul
- Laboratory of Pharmacology, Neurobiology and Behavior (URAC-37), Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakech, Morocco
| | - Mohammed Bennis
- Laboratory of Pharmacology, Neurobiology and Behavior (URAC-37), Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakech, Morocco
| | - Sara Bonzano
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy.,Neuroscience Institute Cavalieri Ottolenghi, Orbassano, Italy
| | - Giovanna Gambarotta
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, Italy
| | - Isabelle Perroteau
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, Italy
| | - Silvia De Marchis
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy.,Neuroscience Institute Cavalieri Ottolenghi, Orbassano, Italy
| | - Saadia Ba-M'hamed
- Laboratory of Pharmacology, Neurobiology and Behavior (URAC-37), Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakech, Morocco
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11
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Abstract
Adult neurogenesis is the lifelong generation of new neurons that occurs into restricted regions of the adult mammalian brain, namely the dentate gyrus of the hippocampus and the olfactory bulb. In this chapter, we describe the procedures aimed to investigate adult neurogenesis in the murine brain. Specifically, we explain how to inject into animals exogenous markers of proliferation (i.e., BrdU) and prepare brain tissues to perform immunofluorescence reactions for neuronal markers in combination with BrdU staining. As BrdU is incorporated in the DNA during the S-phase of the cell cycle of proliferating cells and is then inherited by daughter cells, by coupling BrdU-immunoreactivity together with the immunolabeling for neuronal markers, we provide the general procedures that can be applied to identify adult-born neurons and to characterize their specific phenotypes in different brain regions, under physiological condition or in pathological states.
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Affiliation(s)
- Sara Bonzano
- Department of Life Sciences and Systems Biology (DBIOS), University of Turin, Via Accademia Albertina 13, 10123, Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, Turin, Italy
| | - Silvia De Marchis
- Department of Life Sciences and Systems Biology (DBIOS), University of Turin, Via Accademia Albertina 13, 10123, Turin, Italy.
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, Turin, Italy.
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12
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Bonzano S, Bovetti S, Gendusa C, Peretto P, De Marchis S. Adult Born Olfactory Bulb Dopaminergic Interneurons: Molecular Determinants and Experience-Dependent Plasticity. Front Neurosci 2016; 10:189. [PMID: 27199651 PMCID: PMC4858532 DOI: 10.3389/fnins.2016.00189] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 04/18/2016] [Indexed: 12/31/2022] Open
Abstract
The olfactory bulb (OB) is a highly plastic brain region involved in the early processing of olfactory information. A remarkably feature of the OB circuits in rodents is the constitutive integration of new neurons that takes place during adulthood. Newborn cells in the adult OB are mostly inhibitory interneurons belonging to chemically, morphologically and functionally heterogeneous types. Although there is general agreement that adult neurogenesis in the OB plays a key role in sensory information processing and olfaction-related plasticity, the contribution of each interneuron subtype to such functions is far to be elucidated. Here, we focus on the dopaminergic (DA) interneurons: we highlight recent findings about their morphological features and then describe the molecular factors required for the specification/differentiation and maintenance of the DA phenotype in adult born neurons. We also discuss dynamic changes of the DA interneuron population related to age, environmental stimuli and lesions, and their possible functional implications.
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Affiliation(s)
- Sara Bonzano
- Department of Life Sciences and Systems Biology, University of TurinTorino, Italy; Neuroscience Institute Cavalieri Ottolenghi, University of TurinOrbassano, Italy
| | - Serena Bovetti
- Department of Neuroscience and Brain Technologies, Istituto Italiano di Tecnologia Genova, Italy
| | - Claudio Gendusa
- Department of Life Sciences and Systems Biology, University of Turin Torino, Italy
| | - Paolo Peretto
- Department of Life Sciences and Systems Biology, University of TurinTorino, Italy; Neuroscience Institute Cavalieri Ottolenghi, University of TurinOrbassano, Italy
| | - Silvia De Marchis
- Department of Life Sciences and Systems Biology, University of TurinTorino, Italy; Neuroscience Institute Cavalieri Ottolenghi, University of TurinOrbassano, Italy
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13
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Bonzano S, Bovetti S, Fasolo A, Peretto P, De Marchis S. Odour enrichment increases adult-born dopaminergic neurons in the mouse olfactory bulb. Eur J Neurosci 2014; 40:3450-7. [DOI: 10.1111/ejn.12724] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Revised: 08/13/2014] [Accepted: 08/15/2014] [Indexed: 10/24/2022]
Affiliation(s)
- Sara Bonzano
- Department of Life Sciences and Systems Biology; University of Torino; Via Accademia Albertina 13 10123 Torino Italy
- Neuroscience Institute Cavalieri Ottolenghi (NICO); Orbassano Italy
| | - Serena Bovetti
- Department of Life Sciences and Systems Biology; University of Torino; Via Accademia Albertina 13 10123 Torino Italy
| | - Aldo Fasolo
- Department of Life Sciences and Systems Biology; University of Torino; Via Accademia Albertina 13 10123 Torino Italy
| | - Paolo Peretto
- Department of Life Sciences and Systems Biology; University of Torino; Via Accademia Albertina 13 10123 Torino Italy
- Neuroscience Institute Cavalieri Ottolenghi (NICO); Orbassano Italy
| | - Silvia De Marchis
- Department of Life Sciences and Systems Biology; University of Torino; Via Accademia Albertina 13 10123 Torino Italy
- Neuroscience Institute Cavalieri Ottolenghi (NICO); Orbassano Italy
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14
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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