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Le Ciclé C, Pacini V, Rama N, Tauszig-Delamasure S, Airaud E, Petit F, de Beco S, Cohen-Tannoudji J, L'hôte D. The Neurod1/4-Ntrk3-Src pathway regulates gonadotrope cell adhesion and motility. Cell Death Discov 2023; 9:327. [PMID: 37658038 PMCID: PMC10474047 DOI: 10.1038/s41420-023-01615-7] [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: 03/20/2023] [Revised: 08/08/2023] [Accepted: 08/16/2023] [Indexed: 09/03/2023] Open
Abstract
Pituitary gonadotrope cells are essential for the endocrine regulation of reproduction in vertebrates. These cells emerge early during embryogenesis, colonize the pituitary glands and organize in tridimensional networks, which are believed to be crucial to ensure proper regulation of fertility. However, the molecular mechanisms regulating the organization of gonadotrope cell population during embryogenesis remain poorly understood. In this work, we characterized the target genes of NEUROD1 and NEUROD4 transcription factors in the immature gonadotrope αT3-1 cell model by in silico functional genomic analyses. We demonstrated that NEUROD1/4 regulate genes belonging to the focal adhesion pathway. Using CRISPR/Cas9 knock-out approaches, we established a double NEUROD1/4 knock-out αT3-1 cell model and demonstrated that NEUROD1/4 regulate cell adhesion and cell motility. We then characterized, by immuno-fluorescence, focal adhesion number and signaling in the context of NEUROD1/4 insufficiency. We demonstrated that NEUROD1/4 knock-out leads to an increase in the number of focal adhesions associated with signaling abnormalities implicating the c-Src kinase. We further showed that the neurotrophin tyrosine kinase receptor 3 NTRK3, a target of NEUROD1/4, interacts physically with c-Src. Furthermore, using motility rescue experiments and time-lapse video microscopy, we demonstrated that NTRK3 is a major regulator of gonadotrope cell motility. Finally, using a Ntrk3 knock-out mouse model, we showed that NTRK3 regulates gonadotrope cells positioning in the developing pituitary, in vivo. Altogether our study demonstrates that the Neurod1/4-Ntrk3-cSrc pathway is a major actor of gonadotrope cell mobility, and thus provides new insights in the regulation of gonadotrope cell organization within the pituitary gland.
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Affiliation(s)
- Charles Le Ciclé
- Université Paris Cité, CNRS, Inserm, Unité de Biologie Fonctionnelle et Adaptative, F-75013, Paris, France
| | - Vincent Pacini
- Université Paris Cité, CNRS, Inserm, Unité de Biologie Fonctionnelle et Adaptative, F-75013, Paris, France
- Université Paris Cité, CNRS, Institut Jacques Monod, F-75013, Paris, France
| | - Nicolas Rama
- Centre de Recherche en Cancérologie de Lyon, Inserm U1052, CNRS UMR 5286, Centre Léon Bérard, Université Lyon1, 69008, Lyon, France
| | - Servane Tauszig-Delamasure
- Institut NeuroMyoGène - CNRS UMR 5310 - Inserm U1217 de Lyon - UCBL Lyon 1, Faculté de Médecine et de Pharmacie, Lyon, France
| | - Eloïse Airaud
- Université Paris Cité, CNRS, Inserm, Unité de Biologie Fonctionnelle et Adaptative, F-75013, Paris, France
| | - Florence Petit
- Université Paris Cité, CNRS, Inserm, Unité de Biologie Fonctionnelle et Adaptative, F-75013, Paris, France
- Faculty of Pharmacy, Université de Montréal, Montréal, QC, H3T 1J4, Canada
| | - Simon de Beco
- Université Paris Cité, CNRS, Institut Jacques Monod, F-75013, Paris, France
| | - Joëlle Cohen-Tannoudji
- Université Paris Cité, CNRS, Inserm, Unité de Biologie Fonctionnelle et Adaptative, F-75013, Paris, France
| | - David L'hôte
- Université Paris Cité, CNRS, Inserm, Unité de Biologie Fonctionnelle et Adaptative, F-75013, Paris, France.
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Kigami D, Butt MT, Brown DL, Matsumoto M, Ito H. Neurotoxicity studies with a tropomyosin-related kinase A inhibitor, ASP7962, on the sympathetic and sensory nervous systems in rats. Toxicol Lett 2021; 344:34-45. [PMID: 33667609 DOI: 10.1016/j.toxlet.2021.02.018] [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: 11/05/2020] [Revised: 01/21/2021] [Accepted: 02/28/2021] [Indexed: 11/30/2022]
Abstract
ASP7962 is a small molecule inhibitor for the nerve growth factor (NGF) receptor, tropomyosin-related kinase A (TrkA). NGF contributes to the survival of sensory and sympathetic neurons through TrkA receptor activation. Gross, microscopic, and quantitative effects to the nervous system were evaluated following oral ASP7962 administration to Sprague Dawley rats for 4 weeks and 13 weeks and after a recovery period. Histopathological findings included reversible neuronal atrophy but no neuronal death in the sympathetic ganglia (cervicothoracic ganglion, cranial mesenteric ganglion or superior [cranial] cervical ganglion). Stereological analysis showed reversible decreased ganglion volume and/or decreased neuron size in the superior (cranial) cervical ganglion in both the 4-week and the 13-week repeated dose studies. There were no test article related changes in the brain, dorsal root ganglia with spinal nerve roots or trigeminal ganglia and no functional deficits. ASP7962 did not cause any detectable dysfunction of the sympathetic and sensory nervous system in either study.
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Affiliation(s)
- Daisuke Kigami
- Drug Discovery Research, Astellas Pharma Inc., Tsukuba, Ibaraki, Japan.
| | - Mark T Butt
- Tox Path Specialists, A StageBio Company, Frederick, MD, United States of America
| | - Danielle L Brown
- Charles River Laboratories, Inc., Durham, NC, United States of America
| | | | - Hiroyuki Ito
- Drug Discovery Research, Astellas Pharma Inc., Tsukuba, Ibaraki, Japan
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Bothwell M. Recent advances in understanding context-dependent mechanisms controlling neurotrophin signaling and function. F1000Res 2019; 8:F1000 Faculty Rev-1658. [PMID: 31583078 PMCID: PMC6758832 DOI: 10.12688/f1000research.19174.1] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/11/2019] [Indexed: 01/01/2023] Open
Abstract
Complex mechanisms control the signaling of neurotrophins through p75 NTR and Trk receptors, allowing cellular responses that are highly context dependent, particularly in the nervous system and particularly with regard to the neurotrophin brain-derived neurotrophic factor (BDNF). Recent reports describe a variety of sophisticated regulatory mechanisms that contribute to such functional flexibility. Mechanisms described include regulation of trafficking of alternative BDNF transcripts, regulation of post-translational processing and secretion of BDNF, engagement of co-receptors that influence localization and signaling of p75 NTR and Trk receptors, and control of trafficking of receptors in the endocytic pathway and during anterograde and retrograde axonal transport.
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Affiliation(s)
- Mark Bothwell
- Department of Physiology & Biophysics, University of Washington Medical Center, Seattle, WA, 98195-7290, USA
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