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Pressé MT, Malgrange B, Delacroix L. The cochlear matrisome: Importance in hearing and deafness. Matrix Biol 2024; 125:40-58. [PMID: 38070832 DOI: 10.1016/j.matbio.2023.12.002] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 11/20/2023] [Accepted: 12/06/2023] [Indexed: 02/12/2024]
Abstract
The extracellular matrix (ECM) consists in a complex meshwork of collagens, glycoproteins, and proteoglycans, which serves a scaffolding function and provides viscoelastic properties to the tissues. ECM acts as a biomechanical support, and actively participates in cell signaling to induce tissular changes in response to environmental forces and soluble cues. Given the remarkable complexity of the inner ear architecture, its exquisite structure-function relationship, and the importance of vibration-induced stimulation of its sensory cells, ECM is instrumental to hearing. Many factors of the matrisome are involved in cochlea development, function and maintenance, as evidenced by the variety of ECM proteins associated with hereditary deafness. This review describes the structural and functional ECM components in the auditory organ and how they are modulated over time and following injury.
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Affiliation(s)
- Mary T Pressé
- Developmental Neurobiology Unit, GIGA-Neurosciences, University of Liège, 15 avenue Hippocrate - CHU - B36 (1st floor), Liège B-4000, Belgium
| | - Brigitte Malgrange
- Developmental Neurobiology Unit, GIGA-Neurosciences, University of Liège, 15 avenue Hippocrate - CHU - B36 (1st floor), Liège B-4000, Belgium
| | - Laurence Delacroix
- Developmental Neurobiology Unit, GIGA-Neurosciences, University of Liège, 15 avenue Hippocrate - CHU - B36 (1st floor), Liège B-4000, Belgium.
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Veithen M, Huyghe A, Van Den Ackerveken P, Fukada SI, Kokubo H, Breuskin I, Nguyen L, Delacroix L, Malgrange B. Sox9 Inhibits Cochlear Hair Cell Fate by Upregulating Hey1 and HeyL Antagonists of Atoh1. Cells 2023; 12:2148. [PMID: 37681879 PMCID: PMC10486728 DOI: 10.3390/cells12172148] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 08/23/2023] [Accepted: 08/24/2023] [Indexed: 09/09/2023] Open
Abstract
It is widely accepted that cell fate determination in the cochlea is tightly controlled by different transcription factors (TFs) that remain to be fully defined. Here, we show that Sox9, initially expressed in the entire sensory epithelium of the cochlea, progressively disappears from differentiating hair cells (HCs) and is finally restricted to supporting cells (SCs). By performing ex vivo electroporation of E13.5-E14.5 cochleae, we demonstrate that maintenance of Sox9 expression in the progenitors committed to HC fate blocks their differentiation, even if co-expressed with Atoh1, a transcription factor necessary and sufficient to form HC. Sox9 inhibits Atoh1 transcriptional activity by upregulating Hey1 and HeyL antagonists, and genetic ablation of these genes induces extra HCs along the cochlea. Although Sox9 suppression from sensory progenitors ex vivo leads to a modest increase in the number of HCs, it is not sufficient in vivo to induce supernumerary HC production in an inducible Sox9 knockout model. Taken together, these data show that Sox9 is downregulated from nascent HCs to allow the unfolding of their differentiation program. This may be critical for future strategies to promote fully mature HC formation in regeneration approaches.
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Affiliation(s)
- Mona Veithen
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences, University of Liege, 4000 Liege, Belgium; (M.V.); (A.H.); (P.V.D.A.); (I.B.); (L.D.)
| | - Aurélia Huyghe
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences, University of Liege, 4000 Liege, Belgium; (M.V.); (A.H.); (P.V.D.A.); (I.B.); (L.D.)
| | - Priscilla Van Den Ackerveken
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences, University of Liege, 4000 Liege, Belgium; (M.V.); (A.H.); (P.V.D.A.); (I.B.); (L.D.)
| | - So-ichiro Fukada
- Laboratory of Stem Cell Regeneration and Adaptation, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka 565-0871, Japan;
| | - Hiroki Kokubo
- Graduate School of Biomedical and Health Sciences, 1-2-3 Kasumi, Minamiku, Hiroshima 734-8551, Japan;
| | - Ingrid Breuskin
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences, University of Liege, 4000 Liege, Belgium; (M.V.); (A.H.); (P.V.D.A.); (I.B.); (L.D.)
| | - Laurent Nguyen
- Laboratory of Molecular Regulation of Neurogenesis, GIGA-Neurosciences, University of Liege, 4000 Liege, Belgium;
| | - Laurence Delacroix
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences, University of Liege, 4000 Liege, Belgium; (M.V.); (A.H.); (P.V.D.A.); (I.B.); (L.D.)
| | - Brigitte Malgrange
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences, University of Liege, 4000 Liege, Belgium; (M.V.); (A.H.); (P.V.D.A.); (I.B.); (L.D.)
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Chohra I, Giri S, Malgrange B. Generation of a Well-Characterized Homozygous Chromodomain-Helicase-DNA-Binding Protein 4 G1003D Mutant hESC Line Using CRISPR/eCas9 (ULIEGEe001-A-1). Int J Mol Sci 2023; 24:10543. [PMID: 37445725 DOI: 10.3390/ijms241310543] [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: 05/26/2023] [Revised: 06/12/2023] [Accepted: 06/21/2023] [Indexed: 07/15/2023] Open
Abstract
The chromatin remodeler Chromodomain-helicase-DNA-binding protein 4 (CHD4) is crucial for the development of multiple organ systems. Functional mutations of CHD4 have recently been described in a developmental disorder, namely Siffrim-Hitz-Weiss syndrome (SIHIWES). Herein, we have generated a homozygous CHD4G1003D hESC line (WAe025-A-1) using CRISPR/eCas9-based gene editing in the WA-25 hESC line. The edited hESC line maintains normal karyotype, pluripotency, and ability to differentiate into three germ layers. This cell line will be a valuable resource for studying the functional role of CHD4 during the development and disease modeling of SIHIWES in vitro.
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Affiliation(s)
- Ilyas Chohra
- Developmental Neurobiology Unit, GIGA-Stem Cells, Av Hippocrate, 15 B-4000 Liege, Belgium
| | - Subhajit Giri
- Developmental Neurobiology Unit, GIGA-Stem Cells, Av Hippocrate, 15 B-4000 Liege, Belgium
| | - Brigitte Malgrange
- Developmental Neurobiology Unit, GIGA-Stem Cells, Av Hippocrate, 15 B-4000 Liege, Belgium
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D'Aes T, Marlier Q, Verteneuil S, Quatresooz P, Vandenbosch R, Malgrange B. Re-Evaluating the Relevance of the Oxygen-Glucose Deprivation Model in Ischemic Stroke: The Example of Cdk Inhibition. Int J Mol Sci 2023; 24:ijms24087009. [PMID: 37108171 PMCID: PMC10138648 DOI: 10.3390/ijms24087009] [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: 03/16/2023] [Revised: 04/03/2023] [Accepted: 04/06/2023] [Indexed: 04/29/2023] Open
Abstract
Previous research has shown that cyclin-dependent kinases (Cdks) that play physiological roles in cell cycle regulation become activated in post-mitotic neurons after ischemic stroke, resulting in apoptotic neuronal death. In this article, we report our results using the widely used oxygen-glucose deprivation (OGD) in vitro model of ischemic stroke on primary mouse cortical neurons to investigate whether Cdk7, as part of the Cdk-activating kinase (CAK) complex that activates cell cycle Cdks, might be a regulator of ischemic neuronal death and may potentially constitute a therapeutic target for neuroprotection. We found no evidence of neuroprotection with either pharmacological or genetic invalidation of Cdk7. Despite the well-established idea that apoptosis contributes to cell death in the ischemic penumbra, we also found no evidence of apoptosis in the OGD model. This could explain the absence of neuroprotection following Cdk7 invalidation in this model. Neurons exposed to OGD seem predisposed to die in an NMDA receptor-dependent manner that could not be prevented further downstream. Given the direct exposure of neurons to anoxia or severe hypoxia, it is questionable how relevant OGD is for modeling the ischemic penumbra. Due to remaining uncertainties about cell death after OGD, caution is warranted when using this in vitro model to identify new stroke therapies.
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Affiliation(s)
- Tine D'Aes
- Laboratory of Developmental Neurobiology, GIGA-Stem Cells & GIGA-Neurosciences, University of Liège, 4000 Liège, Belgium
| | - Quentin Marlier
- Laboratory of Developmental Neurobiology, GIGA-Stem Cells & GIGA-Neurosciences, University of Liège, 4000 Liège, Belgium
- Dendrogenix, Avenue de l'Hôpital, 1-B34 +3, 4000 Liège, Belgium
| | - Sébastien Verteneuil
- Laboratory of Developmental Neurobiology, GIGA-Stem Cells & GIGA-Neurosciences, University of Liège, 4000 Liège, Belgium
- Division of Histology, Department of Biomedical and Preclinical Sciences, University of Liège, 4000 Liège, Belgium
| | - Pascale Quatresooz
- Division of Histology, Department of Biomedical and Preclinical Sciences, University of Liège, 4000 Liège, Belgium
| | - Renaud Vandenbosch
- Laboratory of Developmental Neurobiology, GIGA-Stem Cells & GIGA-Neurosciences, University of Liège, 4000 Liège, Belgium
- Division of Histology, Department of Biomedical and Preclinical Sciences, University of Liège, 4000 Liège, Belgium
| | - Brigitte Malgrange
- Laboratory of Developmental Neurobiology, GIGA-Stem Cells & GIGA-Neurosciences, University of Liège, 4000 Liège, Belgium
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Chohra I, Chung K, Giri S, Malgrange B. ATP-Dependent Chromatin Remodellers in Inner Ear Development. Cells 2023; 12:cells12040532. [PMID: 36831199 PMCID: PMC9954591 DOI: 10.3390/cells12040532] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 01/30/2023] [Accepted: 02/01/2023] [Indexed: 02/11/2023] Open
Abstract
During transcription, DNA replication and repair, chromatin structure is constantly modified to reveal specific genetic regions and allow access to DNA-interacting enzymes. ATP-dependent chromatin remodelling complexes use the energy of ATP hydrolysis to modify chromatin architecture by repositioning and rearranging nucleosomes. These complexes are defined by a conserved SNF2-like, catalytic ATPase subunit and are divided into four families: CHD, SWI/SNF, ISWI and INO80. ATP-dependent chromatin remodellers are crucial in regulating development and stem cell biology in numerous organs, including the inner ear. In addition, mutations in genes coding for proteins that are part of chromatin remodellers have been implicated in numerous cases of neurosensory deafness. In this review, we describe the composition, structure and functional activity of these complexes and discuss how they contribute to hearing and neurosensory deafness.
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Pouyo R, Chung K, Delacroix L, Malgrange B. The ubiquitin-proteasome system in normal hearing and deafness. Hear Res 2022; 426:108366. [PMID: 34645583 DOI: 10.1016/j.heares.2021.108366] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 09/03/2021] [Accepted: 09/23/2021] [Indexed: 12/16/2022]
Abstract
Post-translational modifications of proteins are essential for the proper development and function of many tissues and organs, including the inner ear. Ubiquitination is a highly selective post-translational modification that involves the covalent conjugation of ubiquitin to a substrate protein. The most common outcome of protein ubiquitination is degradation by the ubiquitin-proteasome system (UPS), preventing the accumulation of misfolded, damaged, and excess proteins. In addition to proteasomal degradation, ubiquitination regulates other cellular processes, such as transcription, translation, endocytosis, receptor activity, and subcellular localization. All of these processes are essential for cochlear development and maintenance, as several studies link impairment of UPS with altered cochlear development and hearing loss. In this review, we provide insight into the well-oiled machinery of UPS with a focus on its confirmed role in normal hearing and deafness and potential therapeutic strategies to prevent and treat UPS-associated hearing loss.
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Affiliation(s)
- Ronald Pouyo
- GIGA-Stem Cells, Developmental Neurobiology Unit, University of Liege, Avenue hippocrate 15, B36 1st Floor B, Liege 4000, Belgium
| | - Keshi Chung
- GIGA-Stem Cells, Developmental Neurobiology Unit, University of Liege, Avenue hippocrate 15, B36 1st Floor B, Liege 4000, Belgium
| | - Laurence Delacroix
- GIGA-Stem Cells, Developmental Neurobiology Unit, University of Liege, Avenue hippocrate 15, B36 1st Floor B, Liege 4000, Belgium
| | - Brigitte Malgrange
- GIGA-Stem Cells, Developmental Neurobiology Unit, University of Liege, Avenue hippocrate 15, B36 1st Floor B, Liege 4000, Belgium.
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Abstract
A genetic change could explain increased cortical neurogenesis in modern humans.
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Affiliation(s)
- Brigitte Malgrange
- GIGA-Stem Cells and GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, Liège, Belgium
| | - Laurent Nguyen
- GIGA-Stem Cells and GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, Liège, Belgium
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Dion V, Schumacher N, Masar N, Pieltain A, Tocquin P, Lesoinne P, Malgrange B, Vandenbosch R, Franzen R. Cyclin-dependent kinase 7 contributes to myelin maintenance in the adult central nervous system and promotes myelin gene expression. Glia 2022; 70:1652-1665. [PMID: 35488490 DOI: 10.1002/glia.24186] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 04/08/2022] [Accepted: 04/21/2022] [Indexed: 11/08/2022]
Abstract
Mechanisms regulating oligodendrocyte differentiation, developmental myelination and myelin maintenance in adulthood are complex and still not completely described. Their understanding is crucial for the development of new protective or therapeutic strategies in demyelinating pathologies such as multiple sclerosis. In this perspective, we have investigated the role of Cyclin-dependent kinase 7 (Cdk7), a kinase involved in cell-cycle progression and transcription regulation, in the oligodendroglial lineage. We generated a conditional knock-out mouse model in which Cdk7 is invalidated in post-mitotic oligodendrocytes. At the end of developmental myelination, the number and diameter of myelinated axons, as well as the myelin structure, thickness and protein composition, were normal. However, in young adult and in aged mice, there was a higher number of small caliber myelinated axons associated with a decreased mean axonal diameter, myelin sheaths of large caliber axons were thinner, and the level of some major myelin-associated proteins was reduced. These defects were accompanied by the appearance of an abnormal clasping phenotype. We also used an in vitro oligodendroglial model and showed that Cdk7 pharmacological inhibition led to an altered myelination-associated morphological modification combined with a decreased expression of myelin-specific genes. Altogether, we identified novel functions for Cdk7 in CNS myelination.
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Affiliation(s)
- Valérie Dion
- Laboratory of Nervous System Disorders and Therapies, GIGA Neurosciences, University of Liège, Liège, Belgium
| | - Nathalie Schumacher
- Laboratory of Nervous System Disorders and Therapies, GIGA Neurosciences, University of Liège, Liège, Belgium
| | - Nathalie Masar
- Laboratory of Nervous System Disorders and Therapies, GIGA Neurosciences, University of Liège, Liège, Belgium
| | - Alexandra Pieltain
- Laboratory of Nervous System Disorders and Therapies, GIGA Neurosciences, University of Liège, Liège, Belgium
| | - Pierre Tocquin
- CARE PhytoSYSTEMS, Integrative Biological Sciences, University of Liège, Liège, Belgium
| | - Pierre Lesoinne
- Laboratory of Nervous System Disorders and Therapies, GIGA Neurosciences, University of Liège, Liège, Belgium
| | - Brigitte Malgrange
- Laboratory of Developmental Neurobiology, GIGA Stem Cells & GIGA Neurosciences, University of Liège, Liège, Belgium
| | - Renaud Vandenbosch
- Laboratory of Developmental Neurobiology, GIGA Stem Cells & GIGA Neurosciences, University of Liège, Liège, Belgium.,Division of Histology, Department of Biomedical and Preclinical Sciences, University of Liège, Liège, Belgium
| | - Rachelle Franzen
- Laboratory of Nervous System Disorders and Therapies, GIGA Neurosciences, University of Liège, Liège, Belgium
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Renauld J, Thelen N, Bartholomé O, Malgrange B, Thiry M. Dispensability of Tubulin Acetylation for 15-protofilament Microtubule Formation in the Mammalian Cochlea. Cell Struct Funct 2021; 46:11-20. [PMID: 33473065 PMCID: PMC10511047 DOI: 10.1247/csf.20057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 12/24/2020] [Indexed: 11/11/2022] Open
Abstract
The development of hearing in mammals requires the formation and maturation of a highly organized and specialized epithelium known as the organ of Corti. This epithelium contains two types of cells, the sensory cells, which are the true receptors of auditory information, and the surrounding supporting cells, which are composed of a highly developed cytoskeleton essential to the architecture of the mature organ of Corti. The supporting cells are the only mammalian cells reported to contain the unusual 15-protofilament microtubules. In this paper, we show that 15-protofilament microtubules appear between the second and fourth day after birth in the pillar cells of the organ of Corti in mice. We also show that contrary to what has been described in the nematode worm Caenorhabiditis. elegans, microtubule acetylation is not essential for the formation of 15-protofilament microtubules in mice but is required for fine-tuning of their diameter.Key words: Acetylation, cytoskeleton, microtubule, inner ear, supporting cells.
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Affiliation(s)
- Justine Renauld
- GIGA-Neurosciences, Cell Biology Unit, University of Liège, Liège, Belgium
- Department of Otolaryngology, Case Western Reserve University, Cleveland, OH, United States of America
| | - Nicolas Thelen
- GIGA-Neurosciences, Cell Biology Unit, University of Liège, Liège, Belgium
| | - Odile Bartholomé
- GIGA-Neurosciences, Cell Biology Unit, University of Liège, Liège, Belgium
| | - Brigitte Malgrange
- GIGA-Neurosciences, Developmental Neurobiology Unit, University of Liège, Liège, Belgium
| | - Marc Thiry
- GIGA-Neurosciences, Cell Biology Unit, University of Liège, Liège, Belgium
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Even A, Morelli G, Broix L, Scaramuzzino C, Turchetto S, Gladwyn-Ng I, Le Bail R, Shilian M, Freeman S, Magiera MM, Jijumon AS, Krusy N, Malgrange B, Brone B, Dietrich P, Dragatsis I, Janke C, Saudou F, Weil M, Nguyen L. ATAT1-enriched vesicles promote microtubule acetylation via axonal transport. Sci Adv 2019; 5:eaax2705. [PMID: 31897425 PMCID: PMC6920029 DOI: 10.1126/sciadv.aax2705] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 10/28/2019] [Indexed: 05/13/2023]
Abstract
Microtubules are polymerized dimers of α- and β-tubulin that underlie a broad range of cellular activities. Acetylation of α-tubulin by the acetyltransferase ATAT1 modulates microtubule dynamics and functions in neurons. However, it remains unclear how this enzyme acetylates microtubules over long distances in axons. Here, we show that loss of ATAT1 impairs axonal transport in neurons in vivo, and cell-free motility assays confirm a requirement of α-tubulin acetylation for proper bidirectional vesicular transport. Moreover, we demonstrate that the main cellular pool of ATAT1 is transported at the cytosolic side of neuronal vesicles that are moving along axons. Together, our data suggest that axonal transport of ATAT1-enriched vesicles is the predominant driver of α-tubulin acetylation in axons.
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Affiliation(s)
- Aviel Even
- Laboratory for Neurodegenerative Diseases and Personalized Medicine, Department of Cell Research and Immunology, The George S. Wise Faculty for Life Sciences, Sagol School of Neurosciences, Tel Aviv University, Ramat Aviv 69978, Israel
| | - Giovanni Morelli
- GIGA-Stem Cells and GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, CHU Sart Tilman, Liège 4000, Belgium
- BIOMED Research Institute, University of Hasselt, Hasselt 3500, Belgium
| | - Loïc Broix
- GIGA-Stem Cells and GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, CHU Sart Tilman, Liège 4000, Belgium
| | - Chiara Scaramuzzino
- Grenoble Institut des Neurosciences, GIN, Univ. Grenoble Alpes, F-38000 Grenoble, France
- Inserm, U1216, F-38000 Grenoble, France
| | - Silvia Turchetto
- GIGA-Stem Cells and GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, CHU Sart Tilman, Liège 4000, Belgium
| | - Ivan Gladwyn-Ng
- GIGA-Stem Cells and GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, CHU Sart Tilman, Liège 4000, Belgium
| | - Romain Le Bail
- GIGA-Stem Cells and GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, CHU Sart Tilman, Liège 4000, Belgium
| | - Michal Shilian
- Laboratory for Neurodegenerative Diseases and Personalized Medicine, Department of Cell Research and Immunology, The George S. Wise Faculty for Life Sciences, Sagol School of Neurosciences, Tel Aviv University, Ramat Aviv 69978, Israel
| | - Stephen Freeman
- GIGA-Stem Cells and GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, CHU Sart Tilman, Liège 4000, Belgium
| | - Maria M. Magiera
- Institut Curie, PSL Research University, CNRS UMR 3348, F-91405 Orsay, France
- Université Paris-Sud, Université Paris-Saclay, CNRS UMR3348, F-91405 Orsay, France
| | - A. S. Jijumon
- Institut Curie, PSL Research University, CNRS UMR 3348, F-91405 Orsay, France
- Université Paris-Sud, Université Paris-Saclay, CNRS UMR3348, F-91405 Orsay, France
| | - Nathalie Krusy
- GIGA-Stem Cells and GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, CHU Sart Tilman, Liège 4000, Belgium
| | - Brigitte Malgrange
- GIGA-Stem Cells and GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, CHU Sart Tilman, Liège 4000, Belgium
| | - Bert Brone
- BIOMED Research Institute, University of Hasselt, Hasselt 3500, Belgium
| | - Paula Dietrich
- Department of Physiology, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Ioannis Dragatsis
- Department of Physiology, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Carsten Janke
- Institut Curie, PSL Research University, CNRS UMR 3348, F-91405 Orsay, France
- Université Paris-Sud, Université Paris-Saclay, CNRS UMR3348, F-91405 Orsay, France
| | - Frédéric Saudou
- Grenoble Institut des Neurosciences, GIN, Univ. Grenoble Alpes, F-38000 Grenoble, France
- Inserm, U1216, F-38000 Grenoble, France
- CHU Grenoble Alpes, F-38000 Grenoble, France
| | - Miguel Weil
- Laboratory for Neurodegenerative Diseases and Personalized Medicine, Department of Cell Research and Immunology, The George S. Wise Faculty for Life Sciences, Sagol School of Neurosciences, Tel Aviv University, Ramat Aviv 69978, Israel
| | - Laurent Nguyen
- GIGA-Stem Cells and GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, CHU Sart Tilman, Liège 4000, Belgium
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Delhez A, Lefebvre P, Péqueux C, Malgrange B, Delacroix L. Auditory function and dysfunction: estrogen makes a difference. Cell Mol Life Sci 2019; 77:619-635. [PMID: 31522250 DOI: 10.1007/s00018-019-03295-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [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: 04/05/2019] [Revised: 08/30/2019] [Accepted: 09/05/2019] [Indexed: 01/09/2023]
Abstract
Estrogen is the major female hormone involved in reproductive functions, but it also exerts a variety of additional roles in non-reproductive organs. In this review, we highlight the preclinical and clinical studies that have pointed out sex differences and estrogenic influence on audition. We also describe the experimental evidences supporting a protective role of estrogen towards acquired forms of hearing loss. Although a high level of endogenous estrogen is associated with a better hearing function, hormonal treatments at menopause have provided contradictory outcomes. The various factors that are likely to explain these discrepancies include the treatment regimen as well as the hormonal status and responsiveness of the patients. The complexity of estrogen signaling is being untangled and many downstream effectors of its genomic and non-genomic actions have been identified in other systems. Based on these advances and on the common physio-pathological events that underlie age-related, drug or noise-induced hearing loss, we discuss potential mechanisms for their protective actions in the cochlea.
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Affiliation(s)
- Amandine Delhez
- GIGA-Neurosciences, Developmental Neurobiology Unit, University of Liege, Liege, Belgium.,Department of ENT, CHU de Liege, Liege, Belgium
| | | | - Christel Péqueux
- GIGA-Cancer, Laboratory of Tumors Biology and Development, University of Liege, Liege, Belgium
| | - Brigitte Malgrange
- GIGA-Neurosciences, Developmental Neurobiology Unit, University of Liege, Liege, Belgium
| | - Laurence Delacroix
- GIGA-Neurosciences, Developmental Neurobiology Unit, University of Liege, Liege, Belgium.
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12
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Freeman S, Mateo Sánchez S, Pouyo R, Van Lerberghe PB, Hanon K, Thelen N, Thiry M, Morelli G, Van Hees L, Laguesse S, Chariot A, Nguyen L, Delacroix L, Malgrange B. Proteostasis is essential during cochlear development for neuron survival and hair cell polarity. EMBO Rep 2019; 20:e47097. [PMID: 31321879 DOI: 10.15252/embr.201847097] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [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: 09/18/2018] [Revised: 06/13/2019] [Accepted: 06/22/2019] [Indexed: 01/23/2023] Open
Abstract
Protein homeostasis is essential to cell function, and a compromised ability to reduce the load of misfolded and aggregated proteins is linked to numerous age-related diseases, including hearing loss. Here, we show that altered proteostasis consequent to Elongator complex deficiency also impacts the proper development of the cochlea and results in deafness. In the absence of the catalytic subunit Elp3, differentiating spiral ganglion neurons display large aggresome-like structures and undergo apoptosis before birth. The cochlear mechanosensory cells are able to survive proteostasis disruption but suffer defects in polarity and stereociliary bundle morphogenesis. We demonstrate that protein aggregates accumulate at the apical surface of hair cells, where they cause a local slowdown of microtubular trafficking, altering the distribution of intrinsic polarity proteins and affecting kinocilium position and length. Alleviation of protein misfolding using the chemical chaperone 4-phenylbutyric acid during embryonic development ameliorates hair cell polarity in Elp3-deficient animals. Our study highlights the importance of developmental proteostasis in the cochlea and unveils an unexpected link between proteome integrity and polarized organization of cellular components.
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Affiliation(s)
- Stephen Freeman
- GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), C.H.U. Sart Tilman, University of Liège, Liège, Belgium
| | - Susana Mateo Sánchez
- GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), C.H.U. Sart Tilman, University of Liège, Liège, Belgium
| | - Ronald Pouyo
- GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), C.H.U. Sart Tilman, University of Liège, Liège, Belgium
| | - Pierre-Bernard Van Lerberghe
- GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), C.H.U. Sart Tilman, University of Liège, Liège, Belgium
| | - Kevin Hanon
- GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), C.H.U. Sart Tilman, University of Liège, Liège, Belgium
| | - Nicolas Thelen
- GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), C.H.U. Sart Tilman, University of Liège, Liège, Belgium
| | - Marc Thiry
- GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), C.H.U. Sart Tilman, University of Liège, Liège, Belgium
| | - Giovanni Morelli
- GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), C.H.U. Sart Tilman, University of Liège, Liège, Belgium.,UHasselt, BIOMED, Hasselt, Belgium
| | - Laura Van Hees
- GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), C.H.U. Sart Tilman, University of Liège, Liège, Belgium
| | - Sophie Laguesse
- GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), C.H.U. Sart Tilman, University of Liège, Liège, Belgium
| | - Alain Chariot
- GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), C.H.U. Sart Tilman, University of Liège, Liège, Belgium.,GIGA-Molecular Biology of Diseases, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), C.H.U. Sart Tilman, University of Liège, Liège, Belgium.,Walloon Excellence in Life Sciences and Biotechnology (WELBIO), Wavre, Belgium
| | - Laurent Nguyen
- GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), C.H.U. Sart Tilman, University of Liège, Liège, Belgium
| | - Laurence Delacroix
- GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), C.H.U. Sart Tilman, University of Liège, Liège, Belgium
| | - Brigitte Malgrange
- GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), C.H.U. Sart Tilman, University of Liège, Liège, Belgium
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13
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Silva CG, Peyre E, Adhikari MH, Tielens S, Tanco S, Van Damme P, Magno L, Krusy N, Agirman G, Magiera MM, Kessaris N, Malgrange B, Andrieux A, Janke C, Nguyen L. Cell-Intrinsic Control of Interneuron Migration Drives Cortical Morphogenesis. Cell 2019; 172:1063-1078.e19. [PMID: 29474907 PMCID: PMC5847171 DOI: 10.1016/j.cell.2018.01.031] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [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: 06/02/2017] [Revised: 11/17/2017] [Accepted: 01/24/2018] [Indexed: 11/16/2022]
Abstract
Interneurons navigate along multiple tangential paths to settle into appropriate cortical layers. They undergo a saltatory migration paced by intermittent nuclear jumps whose regulation relies on interplay between extracellular cues and genetic-encoded information. It remains unclear how cycles of pause and movement are coordinated at the molecular level. Post-translational modification of proteins contributes to cell migration regulation. The present study uncovers that carboxypeptidase 1, which promotes post-translational protein deglutamylation, controls the pausing of migrating cortical interneurons. Moreover, we demonstrate that pausing during migration attenuates movement simultaneity at the population level, thereby controlling the flow of interneurons invading the cortex. Interfering with the regulation of pausing not only affects the size of the cortical interneuron cohort but also impairs the generation of age-matched projection neurons of the upper layers. CCP1 controls MLCK activity by processing its polyglutamate carboxy-terminal CCP1 controls the stereotypic two-stroke cycle of cortical interneuron migration Asynchronous pausing during interneuron migration controls cortical invasion Interneuron cortical invasion modulates generation of age-matched projection neurons
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Affiliation(s)
- Carla G Silva
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Elise Peyre
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Mohit H Adhikari
- Center for Brain and Cognition, Department of Information and Technology, Universitat Pompeu Fabra, Calle Ramon Trias Fargas 25-27, Barcelona 08005, Spain
| | - Sylvia Tielens
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Sebastian Tanco
- VIB-UGent Center for Medical Biotechnologie, VIB, 9000 Ghent, Belgium; Department of Biochemistry, Ghent University, 9000 Ghent, Belgium
| | - Petra Van Damme
- VIB-UGent Center for Medical Biotechnologie, VIB, 9000 Ghent, Belgium; Department of Biochemistry, Ghent University, 9000 Ghent, Belgium
| | - Lorenza Magno
- Wolfson Institute for Biomedical Research and Department of Cell and Developmental Biology, University College London, London, UK
| | - Nathalie Krusy
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Gulistan Agirman
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Maria M Magiera
- Institut Curie, CNRS UMR3348, PSL Research University, Centre Universitaire, 91400 Orsay, France
| | - Nicoletta Kessaris
- Wolfson Institute for Biomedical Research and Department of Cell and Developmental Biology, University College London, London, UK
| | - Brigitte Malgrange
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Annie Andrieux
- Université Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, Inserm, U1216, 38000 Grenoble, France
| | - Carsten Janke
- Institut Curie, CNRS UMR3348, PSL Research University, Centre Universitaire, 91400 Orsay, France
| | - Laurent Nguyen
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium.
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14
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Defourny J, Peuckert C, Kullander K, Malgrange B. EphA4-ADAM10 Interplay Patterns the Cochlear Sensory Epithelium through Local Disruption of Adherens Junctions. iScience 2018; 11:246-257. [PMID: 30639848 PMCID: PMC6327856 DOI: 10.1016/j.isci.2018.12.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 05/30/2018] [Revised: 12/19/2018] [Accepted: 12/20/2018] [Indexed: 12/11/2022] Open
Abstract
The cochlear sensory epithelium contains a functionally important triangular fluid-filled space between adjacent pillar cells referred to as the tunnel of Corti. However, the molecular mechanisms leading to local cell-cell separation during development remain elusive. Here we show that EphA4 associates with ADAM10 to promote the destruction of E-cadherin-based adhesions between adjacent pillar cells. These cells fail to separate from each other, and E-cadherin abnormally persists at the pillar cell junction in EphA4 forward-signaling-deficient mice, as well as in the presence of ADAM10 inhibitor. Using immunolabeling and an in situ proximity ligation assay, we found that EphA4 forms a complex with E-cadherin and its sheddase ADAM10, which could be activated by ephrin-B2 across the pillar cell junction to trigger the cleavage of E-cadherin. Altogether, our findings provide a new molecular insight into the regulation of adherens junctions, which might be extended to a variety of physiological or pathological processes.
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Affiliation(s)
- Jean Defourny
- GIGA-Neurosciences, Unit of Cell and Tissue Biology, University of Liège, C.H.U. B36, 4000 Liège, Belgium; GIGA-Neurosciences, Developmental Neurobiology Unit, University of Liège, C.H.U. B36, 4000 Liège, Belgium
| | - Christiane Peuckert
- Department of Neuroscience, Uppsala University, Box 593, Uppsala 75124, Sweden
| | - Klas Kullander
- Department of Neuroscience, Uppsala University, Box 593, Uppsala 75124, Sweden
| | - Brigitte Malgrange
- GIGA-Neurosciences, Developmental Neurobiology Unit, University of Liège, C.H.U. B36, 4000 Liège, Belgium.
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15
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Caron N, Genin EC, Marlier Q, Verteneuil S, Beukelaers P, Morel L, Hu MG, Hinds PW, Nguyen L, Vandenbosch R, Malgrange B. Proliferation of hippocampal progenitors relies on p27-dependent regulation of Cdk6 kinase activity. Cell Mol Life Sci 2018; 75:3817-3827. [PMID: 29728713 DOI: 10.1007/s00018-018-2832-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 12/13/2017] [Revised: 03/02/2018] [Accepted: 05/02/2018] [Indexed: 10/17/2022]
Abstract
Neural stem cells give rise to granule dentate neurons throughout life in the hippocampus. Upon activation, these stem cells generate fast proliferating progenitors that complete several rounds of divisions before differentiating into neurons. Although the mechanisms regulating the activation of stem cells have been intensively studied, little attention has been given so far to the intrinsic machinery allowing the expansion of the progenitor pool. The cell cycle protein Cdk6 positively regulates the proliferation of hippocampal progenitors, but the mechanism involved remains elusive. Whereas Cdk6 functions primarily as a cell cycle kinase, it can also act as transcriptional regulator in cancer cells and hematopoietic stem cells. Using mouse genetics, we show here that the function of Cdk6 in hippocampal neurogenesis relies specifically on its kinase activity. The present study also reveals a specific regulatory mechanism for Cdk6 in hippocampal progenitors. In contrast to the classical model of the cell cycle, we observe that the Cip/Kip family member p27, rather than the Ink4 family, negatively regulates Cdk6 in the adult hippocampus. Altogether, our data uncover a unique, cell type-specific regulatory mechanism controlling the expansion of hippocampal progenitors, where Cdk6 kinase activity is modulated by p27.
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Affiliation(s)
- Nicolas Caron
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences, Quartier Hôpital, University of Liège, Avenue Hippocrate 15, B36 +1, 4000, Liège, Belgium
| | - Emmanuelle C Genin
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences, Quartier Hôpital, University of Liège, Avenue Hippocrate 15, B36 +1, 4000, Liège, Belgium
| | - Quentin Marlier
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences, Quartier Hôpital, University of Liège, Avenue Hippocrate 15, B36 +1, 4000, Liège, Belgium
| | - Sébastien Verteneuil
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences, Quartier Hôpital, University of Liège, Avenue Hippocrate 15, B36 +1, 4000, Liège, Belgium
| | - Pierre Beukelaers
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences, Quartier Hôpital, University of Liège, Avenue Hippocrate 15, B36 +1, 4000, Liège, Belgium
| | - Laurence Morel
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL, USA
| | - Miaofen G Hu
- Molecular Oncology Research Institute, Tufts Medical Center, 75 Kneeland Street, Boston, MA, USA
| | - Philip W Hinds
- Molecular Oncology Research Institute, Tufts Medical Center, 75 Kneeland Street, Boston, MA, USA.,Department of Developmental, Molecular, and Chemical Biology, Tufts University School of Medicine, Boston, MA, USA
| | - Laurent Nguyen
- Molecular Regulation of Neurogenesis, GIGA-Neurosciences, University of Liège, Liège, Belgium
| | - Renaud Vandenbosch
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences, Quartier Hôpital, University of Liège, Avenue Hippocrate 15, B36 +1, 4000, Liège, Belgium
| | - Brigitte Malgrange
- Laboratory of Developmental Neurobiology, GIGA-Neurosciences, Quartier Hôpital, University of Liège, Avenue Hippocrate 15, B36 +1, 4000, Liège, Belgium.
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16
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Marlier Q, Jibassia F, Verteneuil S, Linden J, Kaldis P, Meijer L, Nguyen L, Vandenbosch R, Malgrange B. Genetic and pharmacological inhibition of Cdk1 provides neuroprotection towards ischemic neuronal death. Cell Death Discov 2018; 4:43. [PMID: 29581894 PMCID: PMC5856839 DOI: 10.1038/s41420-018-0044-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [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: 02/01/2018] [Accepted: 02/24/2018] [Indexed: 01/16/2023] Open
Abstract
Cell cycle proteins are mainly expressed by dividing cells. However, it is well established that these molecules play additional non-canonical activities in several cell death contexts. Increasing evidence shows expression of cell cycle regulating proteins in post-mitotic cells, including mature neurons, following neuronal insult. Several cyclin-dependent kinases (Cdks) have already been shown to mediate ischemic neuronal death but Cdk1, a major cell cycle G2/M regulator, has not been investigated in this context. We therefore examined the role of Cdk1 in neuronal cell death following cerebral ischemia, using both in vitro and in vivo genetic and pharmacological approaches. Exposure of primary cortical neurons cultures to 4 h of oxygen–glucose deprivation (OGD) resulted in neuronal cell death and induced Cdk1 expression. Neurons from Cdk1-cKO mice showed partial resistance to OGD-induced neuronal cell death. Addition of R-roscovitine to the culture medium conferred neuroprotection against OGD-induced neuronal death. Transient 1-h occlusion of the cerebral artery (MCAO) also leads to Cdk1 expression and activation. Cdk1-cKO mice displayed partial resistance to transient 1-h MCAO. Moreover, systemic delivery of R-roscovitine was neuroprotective following transient 1-h MCAO. This study demonstrates that promising neuroprotective therapies can be considered through inhibition of the cell cycle machinery and particularly through pharmacological inhibition of Cdk1.
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Affiliation(s)
- Quentin Marlier
- 1Laboratory of Developmental Neurobiology, GIGA-Neurosciences, University of Liège, C.H.U. B36, 4000 Liège, Belgium
| | - Florian Jibassia
- 1Laboratory of Developmental Neurobiology, GIGA-Neurosciences, University of Liège, C.H.U. B36, 4000 Liège, Belgium
| | - Sébastien Verteneuil
- 1Laboratory of Developmental Neurobiology, GIGA-Neurosciences, University of Liège, C.H.U. B36, 4000 Liège, Belgium
| | - Jérôme Linden
- 2Department of Psychology, University of Liege, B32, 4000 Liège, Belgium
| | - Philipp Kaldis
- 3Institute of Molecular and Cell Biology (IMCB), ASTAR (Agency for Science, Technology and Research), 61 Biopolis Drive, Proteos#3-09, Singapore, 138673 Republic of Singapore.,4Department of Biochemistry, National University of Singapore (NUS), Singapore, 117597 Republic of Singapore
| | - Laurent Meijer
- ManRos Therapeutics, Centre de Perharidy, 29680 Roscoff, France
| | - Laurent Nguyen
- 6Laboratory of Molecular Regulation of Neurogenesis, GIGA-Neurosciences, University of Liège, C.H.U. B36, 4000 Liège, Belgium
| | - Renaud Vandenbosch
- 1Laboratory of Developmental Neurobiology, GIGA-Neurosciences, University of Liège, C.H.U. B36, 4000 Liège, Belgium
| | - Brigitte Malgrange
- 1Laboratory of Developmental Neurobiology, GIGA-Neurosciences, University of Liège, C.H.U. B36, 4000 Liège, Belgium
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17
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Van den Ackerveken P, Mounier A, Huyghe A, Sacheli R, Vanlerberghe PB, Volvert ML, Delacroix L, Nguyen L, Malgrange B. The miR-183/ItgA3 axis is a key regulator of prosensory area during early inner ear development. Cell Death Differ 2017; 24:2054-2065. [PMID: 28777373 DOI: 10.1038/cdd.2017.127] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 06/15/2017] [Accepted: 06/30/2017] [Indexed: 01/08/2023] Open
Abstract
MicroRNAs are important regulators of gene expression and are involved in cellular processes such as proliferation or differentiation, particularly during development of numerous organs including the inner ear. However, it remains unknown if miRNAs are required during the earliest stages of otocyst and cochlear duct development. Here, we report that a conditional loss of Dicer expression in the otocyst impairs the early development of the inner ear as a result of the accumulation of DNA damage that trigger p53-mediated apoptosis. Moreover, cochlear progenitors in the prosensory domain do not exit the cell cycle. Our unbiased approach identified ItgA3 as a target of miR-183, which are both enriched in the otic vesicle. We observed that the repression of integrin alpha 3 by miR-183 controls cell proliferation in the developing cochlea. Collectively, our results reveal that Dicer and miRNAs play essential roles in the regulation of early inner ear development.
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Affiliation(s)
- Priscilla Van den Ackerveken
- GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège B-4000, Belgium
| | - Anaïs Mounier
- GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège B-4000, Belgium
| | - Aurelia Huyghe
- GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège B-4000, Belgium
| | - Rosalie Sacheli
- GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège B-4000, Belgium
| | - Pierre-Bernard Vanlerberghe
- GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège B-4000, Belgium
| | - Marie-Laure Volvert
- GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège B-4000, Belgium
| | - Laurence Delacroix
- GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège B-4000, Belgium
| | - Laurent Nguyen
- GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège B-4000, Belgium
| | - Brigitte Malgrange
- GIGA-Neurosciences, Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège B-4000, Belgium
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18
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Vignisse J, Sambon M, Gorlova A, Pavlov D, Caron N, Malgrange B, Shevtsova E, Svistunov A, Anthony DC, Markova N, Bazhenova N, Coumans B, Lakaye B, Wins P, Strekalova T, Bettendorff L. Thiamine and benfotiamine prevent stress-induced suppression of hippocampal neurogenesis in mice exposed to predation without affecting brain thiamine diphosphate levels. Mol Cell Neurosci 2017; 82:126-136. [PMID: 28506637 DOI: 10.1016/j.mcn.2017.05.005] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [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: 12/16/2016] [Revised: 05/09/2017] [Accepted: 05/12/2017] [Indexed: 12/31/2022] Open
Abstract
Thiamine is essential for normal brain function and its deficiency causes metabolic impairment, specific lesions, oxidative damage and reduced adult hippocampal neurogenesis (AHN). Thiamine precursors with increased bioavailability, especially benfotiamine, exert neuroprotective effects not only for thiamine deficiency (TD), but also in mouse models of neurodegeneration. As it is known that AHN is impaired by stress in rodents, we exposed C57BL6/J mice to predator stress for 5 consecutive nights and studied the proliferation (number of Ki67-positive cells) and survival (number of BrdU-positive cells) of newborn immature neurons in the subgranular zone of the dentate gyrus. In stressed mice, the number of Ki67- and BrdU-positive cells was reduced compared to non-stressed animals. This reduction was prevented when the mice were treated (200mg/kg/day in drinking water for 20days) with thiamine or benfotiamine, that were recently found to prevent stress-induced behavioral changes and glycogen synthase kinase-3β (GSK-3β) upregulation in the CNS. Moreover, we show that thiamine and benfotiamine counteract stress-induced bodyweight loss and suppress stress-induced anxiety-like behavior. Both treatments induced a modest increase in the brain content of free thiamine while the level of thiamine diphosphate (ThDP) remained unchanged, suggesting that the beneficial effects observed are not linked to the role of this coenzyme in energy metabolism. Predator stress increased hippocampal protein carbonylation, an indicator of oxidative stress. This effect was antagonized by both thiamine and benfotiamine. Moreover, using cultured mouse neuroblastoma cells, we show that in particular benfotiamine protects against paraquat-induced oxidative stress. We therefore hypothesize that thiamine compounds may act by boosting anti-oxidant cellular defenses, by a mechanism that still remains to be unveiled. Our study demonstrates, for the first time, that thiamine and benfotiamine prevent stress-induced inhibition of hippocampal neurogenesis and accompanying physiological changes. The present data suggest that thiamine precursors with high bioavailability might be useful as a complementary therapy in several neuropsychiatric disorders.
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Affiliation(s)
| | | | - Anna Gorlova
- Laboratory of Psychiatric Neurobiology, I.M. Sechenov First Moscow State Medical University, Moscow, Russia
| | - Dmitrii Pavlov
- Laboratory of Psychiatric Neurobiology, I.M. Sechenov First Moscow State Medical University, Moscow, Russia
| | - Nicolas Caron
- GIGA-Neurosciences, University of Liege, Liege, Belgium
| | | | - Elena Shevtsova
- Institute of Physiologically Active Compounds, Russian Academy of Sciences, Moscow, Russia
| | - Andrey Svistunov
- Laboratory of Psychiatric Neurobiology, I.M. Sechenov First Moscow State Medical University, Moscow, Russia
| | | | - Natalyia Markova
- Institute of Physiologically Active Compounds, Russian Academy of Sciences, Moscow, Russia; Department of Pharmacology, Oxford University, Oxford, UK; Institute of General Pathology and Pathophysiology, Moscow 125 315, Russia; Department of Neuroscience, School for Mental Health and Neuroscience, Maastricht University, Maastricht, Netherlands
| | - Natalyia Bazhenova
- Laboratory of Psychiatric Neurobiology, I.M. Sechenov First Moscow State Medical University, Moscow, Russia; Institute of General Pathology and Pathophysiology, Moscow 125 315, Russia; Department of Neuroscience, School for Mental Health and Neuroscience, Maastricht University, Maastricht, Netherlands
| | | | | | - Pierre Wins
- GIGA-Neurosciences, University of Liege, Liege, Belgium
| | - Tatyana Strekalova
- Laboratory of Psychiatric Neurobiology, I.M. Sechenov First Moscow State Medical University, Moscow, Russia; Department of Neuroscience, School for Mental Health and Neuroscience, Maastricht University, Maastricht, Netherlands.
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19
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Laguesse S, Close P, Van Hees L, Chariot A, Malgrange B, Nguyen L. Loss of Elp3 Impairs the Acetylation and Distribution of Connexin-43 in the Developing Cerebral Cortex. Front Cell Neurosci 2017; 11:122. [PMID: 28507509 PMCID: PMC5410572 DOI: 10.3389/fncel.2017.00122] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [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: 01/10/2017] [Accepted: 04/12/2017] [Indexed: 12/19/2022] Open
Abstract
The Elongator complex is required for proper development of the cerebral cortex. Interfering with its activity in vivo delays the migration of postmitotic projection neurons, at least through a defective α-tubulin acetylation. However, this complex is already expressed by cortical progenitors where it may regulate the early steps of migration by targeting additional proteins. Here we report that connexin-43 (Cx43), which is strongly expressed by cortical progenitors and whose depletion impairs projection neuron migration, requires Elongator expression for its proper acetylation. Indeed, we show that Cx43 acetylation is reduced in the cortex of Elp3cKO embryos, as well as in a neuroblastoma cell line depleted of Elp1 expression, suggesting that Cx43 acetylation requires Elongator in different cellular contexts. Moreover, we show that histones deacetylase 6 (HDAC6) is a deacetylase of Cx43. Finally, we report that acetylation of Cx43 regulates its membrane distribution in apical progenitors of the cerebral cortex.
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Affiliation(s)
- Sophie Laguesse
- GIGA-Neurosciences, University of LiègeLiège, Belgium.,Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of LiègeLiège, Belgium
| | - Pierre Close
- Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of LiègeLiège, Belgium.,GIGA-Molecular Biology of Diseases, University of LiègeLiège, Belgium
| | - Laura Van Hees
- GIGA-Neurosciences, University of LiègeLiège, Belgium.,Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of LiègeLiège, Belgium
| | - Alain Chariot
- Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of LiègeLiège, Belgium.,GIGA-Molecular Biology of Diseases, University of LiègeLiège, Belgium.,Walloon Excellence in Lifesciences and Biotechnology (WELBIO)Wallonia, Belgium
| | - Brigitte Malgrange
- GIGA-Neurosciences, University of LiègeLiège, Belgium.,Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of LiègeLiège, Belgium
| | - Laurent Nguyen
- GIGA-Neurosciences, University of LiègeLiège, Belgium.,Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of LiègeLiège, Belgium
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20
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Ladang A, Rapino F, Heukamp LC, Tharun L, Shostak K, Hermand D, Delaunay S, Klevernic I, Jiang Z, Jacques N, Jamart D, Migeot V, Florin A, Göktuna S, Malgrange B, Sansom OJ, Nguyen L, Büttner R, Close P, Chariot A. Correction: Elp3 drives Wnt-dependent tumor initiation and regeneration in the intestine. J Exp Med 2017; 214:1199. [PMID: 28283535 PMCID: PMC5379966 DOI: 10.1084/jem.2014228803082017c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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21
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Franco B, Malgrange B. Concise Review: Regeneration in Mammalian Cochlea Hair Cells: Help from Supporting Cells Transdifferentiation. Stem Cells 2017; 35:551-556. [PMID: 28102558 DOI: 10.1002/stem.2554] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [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: 09/30/2016] [Revised: 11/16/2016] [Accepted: 11/27/2016] [Indexed: 12/28/2022]
Abstract
It is commonly assumed that mammalian cochlear cells do not regenerate. Therefore, if hair cells are lost following an injury, no recovery could occur. However, during the first postnatal week, mice harbor some progenitor cells that retain the ability to give rise to new hair cells. These progenitor cells are in fact supporting cells. Upon hair cells loss, those cells are able to generate new hair cells both by direct transdifferentiation or following cell cycle re-entry and differentiation. However, this property of supporting cells is progressively lost after birth. Here, we review the molecular mechanisms that are involved in mammalian hair cell development and regeneration. Manipulating pathways used during development constitute good candidates for inducing hair cell regeneration after injury. Despite these promising studies, there is still no evidence for a recovery following hair cells loss in adult mammals. Stem Cells 2017;35:551-556.
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Affiliation(s)
- Bénédicte Franco
- Developmental Neurobiology Unit - GIGA-Neurosciences, University of Liège, Quartier Hôpital (CHU), B-4000, Liège, Belgium
| | - Brigitte Malgrange
- Developmental Neurobiology Unit - GIGA-Neurosciences, University of Liège, Quartier Hôpital (CHU), B-4000, Liège, Belgium
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22
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Peyre E, Gomes Da Silva C, Adhikari M, Tielens S, Krusy N, Tanco S, Van Damme P, Magno L, Magiera M, Kessaris N, Malgrange B, Andrieux A, Janke C, Nguyen L. Cell-intrinsic regulation of interneuron migration controls cortical neurogenesis. Front Neurosci 2017. [DOI: 10.3389/conf.fnins.2017.94.00039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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23
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Pouyo R, Czajkowski A, Delacroix L, Freeman S, Malgrange B, Pouyo L, Pouyo L. Gene expression pattern of NEDD4-1/2 in the developing inner ear. Front Neurosci 2017. [DOI: 10.3389/conf.fnins.2017.94.00092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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24
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Freeman S, Mateo Sanchez S, Pouyo R, Delacroix L, Malgrange B. Regulation of proteostasis by Elp3 is crucial for sensory cell polarity in the developing inner ear. Front Neurosci 2017. [DOI: 10.3389/conf.fnins.2017.94.00044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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25
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Tielens S, Huysseune S, Godin JD, Chariot A, Malgrange B, Nguyen L. Elongator controls cortical interneuron migration by regulating actomyosin dynamics. Cell Res 2016; 26:1131-1148. [PMID: 27670698 DOI: 10.1038/cr.2016.112] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Revised: 06/27/2016] [Accepted: 08/11/2016] [Indexed: 12/20/2022] Open
Abstract
The migration of cortical interneurons is a fundamental process for the establishment of cortical connectivity and its impairment underlies several neurological disorders. During development, these neurons are born in the ganglionic eminences and they migrate tangentially to populate the cortical layers. This process relies on various morphological changes that are driven by dynamic cytoskeleton remodelings. By coupling time lapse imaging with molecular analyses, we show that the Elongator complex controls cortical interneuron migration in mouse embryos by regulating nucleokinesis and branching dynamics. At the molecular level, Elongator fine-tunes actomyosin forces by regulating the distribution and turnover of actin microfilaments during cell migration. Thus, we demonstrate that Elongator cell-autonomously promotes cortical interneuron migration by controlling actin cytoskeletal dynamics.
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Affiliation(s)
- Sylvia Tielens
- GIGA-Neurosciences, 4000 Liège, Belgium.,Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), 4000 Liège, Belgium
| | - Sandra Huysseune
- GIGA-Neurosciences, 4000 Liège, Belgium.,Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), 4000 Liège, Belgium
| | - Juliette D Godin
- GIGA-Neurosciences, 4000 Liège, Belgium.,Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), 4000 Liège, Belgium
| | - Alain Chariot
- Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), 4000 Liège, Belgium.,GIGA-Molecular Biology of Diseases, 4000 Liège, Belgium.,Walloon Excellence in Lifesciences and Biotechnology (WELBIO), University of Liège, CHU Sart Tilman, 4000 Liège, Belgium
| | - Brigitte Malgrange
- GIGA-Neurosciences, 4000 Liège, Belgium.,Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), 4000 Liège, Belgium
| | - Laurent Nguyen
- GIGA-Neurosciences, 4000 Liège, Belgium.,Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), 4000 Liège, Belgium
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26
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Borgs L, Peyre E, Alix P, Hanon K, Grobarczyk B, Godin JD, Purnelle A, Krusy N, Maquet P, Lefebvre P, Seutin V, Malgrange B, Nguyen L. Dopaminergic neurons differentiating from LRRK2 G2019S induced pluripotent stem cells show early neuritic branching defects. Sci Rep 2016; 6:33377. [PMID: 27640816 PMCID: PMC5027571 DOI: 10.1038/srep33377] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [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: 04/22/2016] [Accepted: 08/24/2016] [Indexed: 02/07/2023] Open
Abstract
Some mutations of the LRRK2 gene underlie autosomal dominant form of Parkinson’s disease (PD). The G2019S is a common mutation that accounts for about 2% of PD cases. To understand the pathophysiology of this mutation and its possible developmental implications, we developed an in vitro assay to model PD with human induced pluripotent stem cells (hiPSCs) reprogrammed from skin fibroblasts of PD patients suffering from the LRKK2 G2019S mutation. We differentiated the hiPSCs into neural stem cells (NSCs) and further into dopaminergic neurons. Here we show that NSCs bearing the mutation tend to differentiate less efficiently into dopaminergic neurons and that the latter exhibit significant branching defects as compared to their controls.
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Affiliation(s)
- Laurence Borgs
- GIGA-Research, GIGA-Neurosciences, Université de Liège, Belgium
| | - Elise Peyre
- GIGA-Research, GIGA-Neurosciences, Université de Liège, Belgium
| | - Philippe Alix
- GIGA-Research, GIGA-Neurosciences, Université de Liège, Belgium
| | - Kevin Hanon
- GIGA-Research, GIGA-Neurosciences, Université de Liège, Belgium
| | | | | | - Audrey Purnelle
- GIGA-Research, GIGA-Neurosciences, Université de Liège, Belgium
| | - Nathalie Krusy
- GIGA-Research, GIGA-Neurosciences, Université de Liège, Belgium
| | - Pierre Maquet
- GIGA-Research, GIGA-Neurosciences, Université de Liège, Belgium.,Service de Neurologie, CHU Sart Tilman, Belgium
| | - Philippe Lefebvre
- GIGA-Research, GIGA-Neurosciences, Université de Liège, Belgium.,Service d'othorhinolaryngologie, CHU Sart Tilman, Belgium
| | - Vincent Seutin
- GIGA-Research, GIGA-Neurosciences, Université de Liège, Belgium
| | | | - Laurent Nguyen
- GIGA-Research, GIGA-Neurosciences, Université de Liège, Belgium
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27
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Mateo Sánchez S, Freeman SD, Delacroix L, Malgrange B. The role of post-translational modifications in hearing and deafness. Cell Mol Life Sci 2016; 73:3521-33. [PMID: 27147466 DOI: 10.1007/s00018-016-2257-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [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: 03/09/2016] [Revised: 04/21/2016] [Accepted: 04/26/2016] [Indexed: 12/20/2022]
Abstract
Post-translational modifications (PTMs) are key molecular events that modify proteins after their synthesis and modulate their ultimate functional properties by affecting their stability, localisation, interaction potential or activity. These chemical changes expand the size of the proteome adding diversity to the molecular pathways governing the biological outcome of cells. PTMs are, thus, crucial in regulating a variety of cellular processes such as apoptosis, proliferation and differentiation and have been shown to be instrumental during embryonic development. In addition, alterations in protein PTMs have been implicated in the pathogenesis of many human diseases, including deafness. In this review, we summarize the recent progress made in understanding the roles of PTMs during cochlear development, with particular emphasis on the enzymes driving protein phosphorylation, acetylation, methylation, glycosylation, ubiquitination and SUMOylation. We also discuss how these enzymes may contribute to hearing impairment and deafness.
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Affiliation(s)
- Susana Mateo Sánchez
- Developmental Neurobiology Unit, GIGA-Neurosciences, University of Liège, Quartier Hôpital (CHU), Avenue Hippocrate 15, Tour 4, 1er étage, Bât. B36, 4000, Liège, Belgium
| | - Stephen D Freeman
- Developmental Neurobiology Unit, GIGA-Neurosciences, University of Liège, Quartier Hôpital (CHU), Avenue Hippocrate 15, Tour 4, 1er étage, Bât. B36, 4000, Liège, Belgium
| | - Laurence Delacroix
- Developmental Neurobiology Unit, GIGA-Neurosciences, University of Liège, Quartier Hôpital (CHU), Avenue Hippocrate 15, Tour 4, 1er étage, Bât. B36, 4000, Liège, Belgium
| | - Brigitte Malgrange
- Developmental Neurobiology Unit, GIGA-Neurosciences, University of Liège, Quartier Hôpital (CHU), Avenue Hippocrate 15, Tour 4, 1er étage, Bât. B36, 4000, Liège, Belgium.
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28
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Laguesse S, Creppe C, Nedialkova DD, Prévot PP, Borgs L, Huysseune S, Franco B, Duysens G, Krusy N, Lee G, Thelen N, Thiry M, Close P, Chariot A, Malgrange B, Leidel SA, Godin JD, Nguyen L. A Dynamic Unfolded Protein Response Contributes to the Control of Cortical Neurogenesis. Dev Cell 2016; 35:553-567. [PMID: 26651292 DOI: 10.1016/j.devcel.2015.11.005] [Citation(s) in RCA: 143] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Revised: 10/07/2015] [Accepted: 11/09/2015] [Indexed: 12/21/2022]
Abstract
The cerebral cortex contains layers of neurons sequentially generated by distinct lineage-related progenitors. At the onset of corticogenesis, the first-born progenitors are apical progenitors (APs), whose asymmetric division gives birth directly to neurons. Later, they switch to indirect neurogenesis by generating intermediate progenitors (IPs), which give rise to projection neurons of all cortical layers. While a direct lineage relationship between APs and IPs has been established, the molecular mechanism that controls their transition remains elusive. Here we show that interfering with codon translation speed triggers ER stress and the unfolded protein response (UPR), further impairing the generation of IPs and leading to microcephaly. Moreover, we demonstrate that a progressive downregulation of UPR in cortical progenitors acts as a physiological signal to amplify IPs and promotes indirect neurogenesis. Thus, our findings reveal a contribution of UPR to cell fate acquisition during mammalian brain development.
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Affiliation(s)
- Sophie Laguesse
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Catherine Creppe
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Danny D Nedialkova
- Max Planck Research Group for RNA Biology, Max Planck Institute for Molecular Biomedicine, Von-Esmarch-Strasse 54, 48149 Muenster, Germany; Cells-in-Motion Cluster of Excellence, University of Muenster, Albert-Schweitzer-Campus 1, 48129 Muenster, Germany
| | - Pierre-Paul Prévot
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Laurence Borgs
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Sandra Huysseune
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Bénédicte Franco
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Guérin Duysens
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Nathalie Krusy
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Gabsang Lee
- Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Nicolas Thelen
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Marc Thiry
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Pierre Close
- GIGA-Signal Transduction, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Alain Chariot
- GIGA-Signal Transduction, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Walloon Excellence in Lifesciences and Biotechnology (WELBIO), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Brigitte Malgrange
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Sebastian A Leidel
- Max Planck Research Group for RNA Biology, Max Planck Institute for Molecular Biomedicine, Von-Esmarch-Strasse 54, 48149 Muenster, Germany; Faculty of Medicine, University of Muenster, 48129 Muenster, Germany; Cells-in-Motion Cluster of Excellence, University of Muenster, Albert-Schweitzer-Campus 1, 48129 Muenster, Germany
| | - Juliette D Godin
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium.
| | - Laurent Nguyen
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Walloon Excellence in Lifesciences and Biotechnology (WELBIO), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium.
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29
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Marlier Q, Verteneuil S, Vandenbosch R, Malgrange B. Mechanisms and Functional Significance of Stroke-Induced Neurogenesis. Front Neurosci 2015; 9:458. [PMID: 26696816 PMCID: PMC4672088 DOI: 10.3389/fnins.2015.00458] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [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: 10/15/2015] [Accepted: 11/16/2015] [Indexed: 01/01/2023] Open
Abstract
Stroke affects one in every six people worldwide, and is the leading cause of adult disability. After stroke, some limited spontaneous recovery occurs, the mechanisms of which remain largely unknown. Multiple, parallel approaches are being investigated to develop neuroprotective, reparative and regenerative strategies for the treatment of stroke. For years, clinical studies have tried to use exogenous cell therapy as a means of brain repair, with varying success. Since the rediscovery of adult neurogenesis and the identification of adult neural stem cells in the late nineties, one promising field of investigation is focused upon triggering and stimulating this self-repair system to replace the neurons lost following brain injury. For instance, it is has been demonstrated that the adult brain has the capacity to produce large numbers of new neurons in response to stroke. The purpose of this review is to provide an updated overview of stroke-induced adult neurogenesis, from a cellular and molecular perspective, to its impact on brain repair and functional recovery.
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Affiliation(s)
- Quentin Marlier
- GIGA-Neurosciences, University of Liege, C.H.U. Sart Tilman Liege, Belgium
| | | | - Renaud Vandenbosch
- GIGA-Neurosciences, University of Liege, C.H.U. Sart Tilman Liege, Belgium
| | - Brigitte Malgrange
- GIGA-Neurosciences, University of Liege, C.H.U. Sart Tilman Liege, Belgium
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30
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Ladang A, Rapino F, Heukamp LC, Tharun L, Shostak K, Hermand D, Delaunay S, Klevernic I, Jiang Z, Jacques N, Jamart D, Migeot V, Florin A, Göktuna S, Malgrange B, Sansom OJ, Nguyen L, Büttner R, Close P, Chariot A. Elp3 drives Wnt-dependent tumor initiation and regeneration in the intestine. J Biophys Biochem Cytol 2015. [DOI: 10.1083/jcb.2113oia257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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31
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Ladang A, Rapino F, Heukamp LC, Tharun L, Shostak K, Hermand D, Delaunay S, Klevernic I, Jiang Z, Jacques N, Jamart D, Migeot V, Florin A, Göktuna S, Malgrange B, Sansom OJ, Nguyen L, Büttner R, Close P, Chariot A. Elp3 drives Wnt-dependent tumor initiation and regeneration in the intestine. J Exp Med 2015; 212:2057-75. [PMID: 26527802 PMCID: PMC4647259 DOI: 10.1084/jem.20142288] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [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: 12/08/2014] [Accepted: 09/30/2015] [Indexed: 01/04/2023] Open
Abstract
Ladang et al. report that Elp3, a subunit of the Elongator complex, is induced by Wnt signaling and is required to initiate colon cancer development through the regulation of Sox9 translation. They also show that this mechanism is relevant in radiation-induced intestinal regeneration. Tumor initiation in the intestine can rapidly occur from Lgr5+ crypt columnar stem cells. Dclk1 is a marker of differentiated Tuft cells and, when coexpressed with Lgr5, also marks intestinal cancer stem cells. Here, we show that Elp3, the catalytic subunit of the Elongator complex, is required for Wnt-driven intestinal tumor initiation and radiation-induced regeneration by maintaining a subpool of Lgr5+/Dclk1+/Sox9+ cells. Elp3 deficiency dramatically delayed tumor appearance in Apc-mutated intestinal epithelia and greatly prolonged mice survival without affecting the normal epithelium. Specific ablation of Elp3 in Lgr5+ cells resulted in marked reduction of polyp formation upon Apc inactivation, in part due to a decreased number of Lgr5+/Dclk1+/Sox9+ cells. Mechanistically, Elp3 is induced by Wnt signaling and promotes Sox9 translation, which is needed to maintain the subpool of Lgr5+/Dclk1+ cancer stem cells. Consequently, Elp3 or Sox9 depletion led to similar defects in Dclk1+ cancer stem cells in ex vivo organoids. Finally, Elp3 deficiency strongly impaired radiation-induced intestinal regeneration, in part because of decreased Sox9 protein levels. Together, our data demonstrate the crucial role of Elp3 in maintaining a subpopulation of Lgr5-derived and Sox9-expressing cells needed to trigger Wnt-driven tumor initiation in the intestine.
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Affiliation(s)
- Aurélie Ladang
- Interdisciplinary Cluster for Applied Genoproteomics, University of Liège, 4000 Liège, Belgium Laboratory of Medical Chemistry, University of Liège, 4000 Liège, Belgium GIGA-Signal Transduction, University of Liège, 4000 Liège, Belgium
| | - Francesca Rapino
- Interdisciplinary Cluster for Applied Genoproteomics, University of Liège, 4000 Liège, Belgium Laboratory of Cancer Signaling, University of Liège, 4000 Liège, Belgium GIGA-Signal Transduction, University of Liège, 4000 Liège, Belgium
| | - Lukas C Heukamp
- Institut für Pathologie, University Hospital Cologne, 50937 Cologne, Germany
| | - Lars Tharun
- Institut für Pathologie, University Hospital Cologne, 50937 Cologne, Germany
| | - Kateryna Shostak
- Interdisciplinary Cluster for Applied Genoproteomics, University of Liège, 4000 Liège, Belgium Laboratory of Medical Chemistry, University of Liège, 4000 Liège, Belgium GIGA-Signal Transduction, University of Liège, 4000 Liège, Belgium
| | - Damien Hermand
- Unité de Recherche en Physiologie Moléculaire-Laboratoire de Génétique Moléculaire, University of Namur, 5000 Namur, Belgium
| | - Sylvain Delaunay
- Interdisciplinary Cluster for Applied Genoproteomics, University of Liège, 4000 Liège, Belgium Laboratory of Cancer Signaling, University of Liège, 4000 Liège, Belgium GIGA-Signal Transduction, University of Liège, 4000 Liège, Belgium
| | - Iva Klevernic
- Interdisciplinary Cluster for Applied Genoproteomics, University of Liège, 4000 Liège, Belgium Laboratory of Medical Chemistry, University of Liège, 4000 Liège, Belgium GIGA-Signal Transduction, University of Liège, 4000 Liège, Belgium
| | - Zheshen Jiang
- Interdisciplinary Cluster for Applied Genoproteomics, University of Liège, 4000 Liège, Belgium Laboratory of Medical Chemistry, University of Liège, 4000 Liège, Belgium GIGA-Signal Transduction, University of Liège, 4000 Liège, Belgium
| | - Nicolas Jacques
- Interdisciplinary Cluster for Applied Genoproteomics, University of Liège, 4000 Liège, Belgium Laboratory of Medical Chemistry, University of Liège, 4000 Liège, Belgium GIGA-Signal Transduction, University of Liège, 4000 Liège, Belgium
| | - Diane Jamart
- Interdisciplinary Cluster for Applied Genoproteomics, University of Liège, 4000 Liège, Belgium Laboratory of Cancer Signaling, University of Liège, 4000 Liège, Belgium GIGA-Signal Transduction, University of Liège, 4000 Liège, Belgium
| | - Valérie Migeot
- Unité de Recherche en Physiologie Moléculaire-Laboratoire de Génétique Moléculaire, University of Namur, 5000 Namur, Belgium
| | - Alexandra Florin
- Institut für Pathologie, University Hospital Cologne, 50937 Cologne, Germany
| | - Serkan Göktuna
- Interdisciplinary Cluster for Applied Genoproteomics, University of Liège, 4000 Liège, Belgium Laboratory of Medical Chemistry, University of Liège, 4000 Liège, Belgium GIGA-Signal Transduction, University of Liège, 4000 Liège, Belgium
| | - Brigitte Malgrange
- Interdisciplinary Cluster for Applied Genoproteomics, University of Liège, 4000 Liège, Belgium GIGA Neurosciences, University of Liège, 4000 Liège, Belgium
| | - Owen J Sansom
- Cancer Research UK Beatson Institute, Glasgow G61 1BD, Scotland, UK
| | - Laurent Nguyen
- Interdisciplinary Cluster for Applied Genoproteomics, University of Liège, 4000 Liège, Belgium GIGA Neurosciences, University of Liège, 4000 Liège, Belgium Walloon Excellence in Life Sciences and Biotechnology, 1300 Wavre, Belgium
| | - Reinhard Büttner
- Institut für Pathologie, University Hospital Cologne, 50937 Cologne, Germany
| | - Pierre Close
- Interdisciplinary Cluster for Applied Genoproteomics, University of Liège, 4000 Liège, Belgium Laboratory of Cancer Signaling, University of Liège, 4000 Liège, Belgium GIGA-Signal Transduction, University of Liège, 4000 Liège, Belgium
| | - Alain Chariot
- Interdisciplinary Cluster for Applied Genoproteomics, University of Liège, 4000 Liège, Belgium Laboratory of Medical Chemistry, University of Liège, 4000 Liège, Belgium GIGA-Signal Transduction, University of Liège, 4000 Liège, Belgium Walloon Excellence in Life Sciences and Biotechnology, 1300 Wavre, Belgium
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Huyghe A, Van den Ackerveken P, Sacheli R, Prévot PP, Thelen N, Renauld J, Thiry M, Delacroix L, Nguyen L, Malgrange B. MicroRNA-124 Regulates Cell Specification in the Cochlea through Modulation of Sfrp4/5. Cell Rep 2015; 13:31-42. [PMID: 26387953 DOI: 10.1016/j.celrep.2015.08.054] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 07/01/2015] [Accepted: 08/18/2015] [Indexed: 02/08/2023] Open
Abstract
The organ of Corti, the auditory organ of the mammalian inner ear, contains sensory hair cells and supporting cells that arise from a common sensory progenitor. The molecular bases allowing the specification of these progenitors remain elusive. In the present study, by combining microarray analyses with conditional deletion of Dicer in the developing inner ear, we identified that miR-124 controls cell fate in the developing organ of Corti. By targeting secreted frizzled-related protein 4 (Sfrp4) and Sfrp5, two inhibitors of the Wnt pathway, we showed that miR-124 controls the β-catenin-dependent and also the PCP-related non-canonical Wnt pathways that contribute to HC differentiation and polarization in the organ of Corti. Thus, our work emphasizes the importance of miR-124 as an epigenetic safeguard that fine-tunes the expression of genes critical for cell patterning during cochlear differentiation.
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Affiliation(s)
- Aurélia Huyghe
- GIGA-Neurosciences, University of Liege, C.H.U. Sart Tilman, Liege 4000, Belgium
| | | | - Rosalie Sacheli
- GIGA-Neurosciences, University of Liege, C.H.U. Sart Tilman, Liege 4000, Belgium
| | - Pierre-Paul Prévot
- GIGA-Neurosciences, University of Liege, C.H.U. Sart Tilman, Liege 4000, Belgium
| | - Nicolas Thelen
- GIGA-Neurosciences, University of Liege, C.H.U. Sart Tilman, Liege 4000, Belgium
| | - Justine Renauld
- GIGA-Neurosciences, University of Liege, C.H.U. Sart Tilman, Liege 4000, Belgium
| | - Marc Thiry
- GIGA-Neurosciences, University of Liege, C.H.U. Sart Tilman, Liege 4000, Belgium
| | - Laurence Delacroix
- GIGA-Neurosciences, University of Liege, C.H.U. Sart Tilman, Liege 4000, Belgium
| | - Laurent Nguyen
- GIGA-Neurosciences, University of Liege, C.H.U. Sart Tilman, Liege 4000, Belgium
| | - Brigitte Malgrange
- GIGA-Neurosciences, University of Liege, C.H.U. Sart Tilman, Liege 4000, Belgium.
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Defourny J, Mateo Sánchez S, Schoonaert L, Robberecht W, Davy A, Nguyen L, Malgrange B. Cochlear supporting cell transdifferentiation and integration into hair cell layers by inhibition of ephrin-B2 signalling. Nat Commun 2015; 6:7017. [DOI: 10.1038/ncomms8017] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Accepted: 03/25/2015] [Indexed: 01/08/2023] Open
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Malgrange B, Varela-Nieto I, de Medina P, Paillasse MR. Targeting cholesterol homeostasis to fight hearing loss: a new perspective. Front Aging Neurosci 2015; 7:3. [PMID: 25688206 PMCID: PMC4310297 DOI: 10.3389/fnagi.2015.00003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [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: 11/27/2014] [Accepted: 01/08/2015] [Indexed: 01/01/2023] Open
Abstract
Sensorineural hearing loss (SNHL) is a major pathology of the inner ear that affects nearly 600 million people worldwide. Despite intensive researches, this major health problem remains without satisfactory solutions. The pathophysiological mechanisms involved in SNHL include oxidative stress, excitotoxicity, inflammation, and ischemia, resulting in synaptic loss, axonal degeneration, and apoptosis of spiral ganglion neurons. The mechanisms associated with SNHL are shared with other neurodegenerative disorders. Cholesterol homeostasis is central to numerous pathologies including neurodegenerative diseases and cholesterol regulates major processes involved in neurons survival and function. The role of cholesterol homeostasis in the physiopathology of inner ear is largely unexplored. In this review, we discuss the findings concerning cholesterol homeostasis in neurodegenerative diseases and whether it should be translated into potential therapeutic strategies for the treatment of SNHL.
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Affiliation(s)
- Brigitte Malgrange
- GIGA-Neurosciences, Developmental Neurobiology Unit, University of Liege , Liege , Belgium
| | - Isabel Varela-Nieto
- Instituto de Investigaciones Biomédicas "Alberto Sols", CSIC-UAM. IdiPAZ, CIBERER Instituto de Salud Carlos III. Arturo Duperier 4 , Madrid , Spain
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Genin EC, Caron N, Vandenbosch R, Nguyen L, Malgrange B. Concise review: forkhead pathway in the control of adult neurogenesis. Stem Cells 2015; 32:1398-407. [PMID: 24510844 DOI: 10.1002/stem.1673] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [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: 10/31/2013] [Revised: 01/09/2014] [Accepted: 01/09/2014] [Indexed: 12/23/2022]
Abstract
New cells are continuously generated from immature proliferating cells in the adult brain in two neurogenic niches known as the subgranular zone (SGZ) of the dentate gyrus (DG) of the hippocampus and the sub-ventricular zone (SVZ) of the lateral ventricles. However, the molecular mechanisms regulating their proliferation, differentiation, migration and functional integration of newborn neurons in pre-existing neural network remain largely unknown. Forkhead box (Fox) proteins belong to a large family of transcription factors implicated in a wide variety of biological processes. Recently, there has been accumulating evidence that several members of this family of proteins play important roles in adult neurogenesis. Here, we describe recent advances in our understanding of regulation provided by Fox factors in adult neurogenesis, and evaluate the potential role of Fox proteins as targets for therapeutic intervention in neurodegenerative diseases.
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Affiliation(s)
- Emmanuelle C Genin
- GIGA-Neurosciences, Developmental Neurobiology Unit, University of Liège, Liège, Belgium
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Borgs L, Beukelaers P, Vandenbosch R, Belachew S, Nguyen L, Malgrange B. Cell “circadian” cycle: New role for mammalian core clock genes. Cell Cycle 2014; 8:832-7. [DOI: 10.4161/cc.8.6.7869] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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37
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Volvert ML, Prévot PP, Close P, Laguesse S, Pirotte S, Hemphill J, Rogister F, Kruzy N, Sacheli R, Moonen G, Deiters A, Merkenschlager M, Chariot A, Malgrange B, Godin JD, Nguyen L. MicroRNA targeting of CoREST controls polarization of migrating cortical neurons. Cell Rep 2014; 7:1168-83. [PMID: 24794437 DOI: 10.1016/j.celrep.2014.03.075] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Revised: 10/08/2013] [Accepted: 03/31/2014] [Indexed: 12/13/2022] Open
Abstract
The migration of cortical projection neurons is a multistep process characterized by dynamic cell shape remodeling. The molecular basis of these changes remains elusive, and the present work describes how microRNAs (miRNAs) control neuronal polarization during radial migration. We show that miR-22 and miR-124 are expressed in the cortical wall where they target components of the CoREST/REST transcriptional repressor complex, thereby regulating doublecortin transcription in migrating neurons. This molecular pathway underlies radial migration by promoting dynamic multipolar-bipolar cell conversion at early phases of migration, and later stabilization of cell polarity to support locomotion on radial glia fibers. Thus, our work emphasizes key roles of some miRNAs that control radial migration during cerebral corticogenesis.
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Affiliation(s)
- Marie-Laure Volvert
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Pierre-Paul Prévot
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Pierre Close
- GIGA-Signal Transduction, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Sophie Laguesse
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Sophie Pirotte
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - James Hemphill
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695, USA; Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Florence Rogister
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Nathalie Kruzy
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Rosalie Sacheli
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Gustave Moonen
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Alexander Deiters
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695, USA; Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Matthias Merkenschlager
- Lymphocyte Development Group, MRC Clinical Sciences Centre, Imperial College London, Du Cane Road, London W12 0NN, UK
| | - Alain Chariot
- GIGA-Signal Transduction, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Walloon Excellence in Lifesciences and Biotechnology (WELBIO), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Brigitte Malgrange
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Juliette D Godin
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
| | - Laurent Nguyen
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium; Walloon Excellence in Lifesciences and Biotechnology (WELBIO), University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium.
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Vandenbosch R, Chocholova E, Robe PA, Wang Y, Lambert C, Moonen G, Lallemend F, Malgrange B, Hadjab S. A role for the canonical nuclear factor-κB pathway in coupling neurotrophin-induced differential survival of developing spiral ganglion neurons. Front Cell Neurosci 2013; 7:242. [PMID: 24348336 PMCID: PMC3842586 DOI: 10.3389/fncel.2013.00242] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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: 07/17/2013] [Accepted: 11/14/2013] [Indexed: 11/13/2022] Open
Abstract
Neurotrophins are key players of neural development by controlling cell death programs. However, the signaling pathways that mediate their selective responses in different populations of neurons remain unclear. In the mammalian cochlea, sensory neurons differentiate perinatally into type I and II populations both expressing TrkB and TrkC, which bind respectively brain-derived neurotrophic factor (BDNF) and neurotrophin-3 (NT3). How these two neuronal populations respond differentially to these two neurotrophins remains unknown. Here, we report in rat the segregation of the nuclear factor-κB (NFκB) subunit p65 specifically within the type II population postnatally. Using dissociated cultures of embryonic and postnatal spiral ganglion neurons, we observed a specific requirement of NFκB for BDNF but not NT3-dependent neuronal survival during a particular postnatal time window that corresponds to a period of neuronal cell death and hair cell innervation refinement in the developing cochlea. Consistently, postnatal p65 knockout mice showed a specific decreased number in type II spiral ganglion neurons. Taken together, these results identify NFκB as a type II neuron-specific factor that participates in the selective survival effects of BDNF and NT3 signaling on developing spiral ganglion neurons.
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Affiliation(s)
- Renaud Vandenbosch
- Groupe Interdisciplinaire de Génoprotéomique Appliquée-Neurosciences, Developmental Neurobiology Unit, University of Liège Liège, Belgium
| | - Eva Chocholova
- Groupe Interdisciplinaire de Génoprotéomique Appliquée-Neurosciences, Developmental Neurobiology Unit, University of Liège Liège, Belgium
| | - Pierre A Robe
- Department of Human Genetics, University of Liège Liège, Belgium ; Groupe Interdisciplinaire de Génoprotéomique Appliquée-Research Center, University of Liège Liège, Belgium
| | - Yiqiao Wang
- Department of Neuroscience, Karolinska Institute Stockholm, Sweden
| | - Cécile Lambert
- Bone and Cartilage Research Unit, Institute of Pathology, Centre Hospitalier Universitaire du Sart-Tilman Liège, Belgium
| | - Gustave Moonen
- Groupe Interdisciplinaire de Génoprotéomique Appliquée-Neurosciences, Developmental Neurobiology Unit, University of Liège Liège, Belgium ; Department of Neurology, Centre Hospitalier Universitaire du Sart Tilman Liège, Belgium
| | - François Lallemend
- Groupe Interdisciplinaire de Génoprotéomique Appliquée-Neurosciences, Developmental Neurobiology Unit, University of Liège Liège, Belgium ; Department of Neuroscience, Karolinska Institute Stockholm, Sweden
| | - Brigitte Malgrange
- Groupe Interdisciplinaire de Génoprotéomique Appliquée-Neurosciences, Developmental Neurobiology Unit, University of Liège Liège, Belgium
| | - Saïda Hadjab
- Groupe Interdisciplinaire de Génoprotéomique Appliquée-Neurosciences, Developmental Neurobiology Unit, University of Liège Liège, Belgium ; Department of Neuroscience, Karolinska Institute Stockholm, Sweden
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Godin JD, Thomas N, Laguesse S, Malinouskaya L, Close P, Malaise O, Purnelle A, Raineteau O, Campbell K, Fero M, Moonen G, Malgrange B, Chariot A, Metin C, Besson A, Nguyen L. p27(Kip1) is a microtubule-associated protein that promotes microtubule polymerization during neuron migration. Dev Cell 2012; 23:729-44. [PMID: 23022035 DOI: 10.1016/j.devcel.2012.08.006] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Revised: 05/16/2012] [Accepted: 08/08/2012] [Indexed: 01/28/2023]
Abstract
The migration of cortical interneurons is characterized by extensive morphological changes that result from successive cycles of nucleokinesis and neurite branching. Their molecular bases remain elusive, and the present work describes how p27(Kip1) controls cell-cycle-unrelated signaling pathways to regulate these morphological remodelings. Live imaging reveals that interneurons lacking p27(Kip1) show delayed tangential migration resulting from defects in both nucleokinesis and dynamic branching of the leading process. At the molecular level, p27(Kip1) is a microtubule-associated protein that promotes polymerization of microtubules in extending neurites, thereby contributing to tangential migration. Furthermore, we show that p27(Kip1) controls actomyosin contractions that drive both forward translocation of the nucleus and growth cone splitting. Thus, p27(Kip1) cell-autonomously controls nucleokinesis and neurite branching by regulating both actin and microtubule cytoskeletons.
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Affiliation(s)
- Juliette D Godin
- GIGA-Neurosciences, University of Liège, C.H.U. Sart Tilman, Liège 4000, Belgium
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40
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Abstract
MicroRNAs (miRNAs) are non-coding RNAs that promote post-transcriptional silencing of genes involved in a wide range of developmental and pathological processes. It is estimated that most protein-coding genes harbor miRNA recognition sequences in their 3' untranslated region and are thus putative targets. While functions of miRNAs have been extensively characterized in various tissues, their multiple contributions to cerebral cortical development are just beginning to be unveiled. This review aims to outline the evidence collected to date demonstrating a role for miRNAs in cerebral corticogenesis with a particular emphasis on pathways that control the birth and maturation of functional excitatory projection neurons.
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Affiliation(s)
- M-L Volvert
- GIGA-Neurosciences, University of Liège, CHU Sart Tilman, Belgium
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41
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Malgrange B, Lefèbvre PP, Moonen G. Biologie cellulaire de la prévention et du traitement des surdités neurosensorielles. Med Sci (Paris) 2012. [DOI: 10.4267/10608/1097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Abstract
Recent advances in human genomics led to the identification of numerous defective genes causing deafness, which represent novel putative therapeutic targets. Future gene-based treatment of deafness resulting from genetic or acquired sensorineural hearing loss may include strategies ranging from gene therapy to antisense delivery. For successful development of gene therapies, a minimal requirement involves the engineering of appropriate gene carrier systems. Transfer of exogenous genetic material into the mammalian inner ear using viral or non-viral vectors has been characterized over the last decade. The nature of inner ear cells targeted, as well as the transgene expression level and duration, are highly dependent on the vector type, the route of administration and the strength of the promoter driving expression. This review summarizes and discusses recent advances in inner ear gene-transfer technologies aimed at examining gene function or identifying new treatment for inner ear disorders.
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Affiliation(s)
- R Sacheli
- GIGA-Neurosciences, Developmental Neurobiology Unit, University of Liège, Liège, Belgium
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43
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Beukelaers P, Vandenbosch R, Caron N, Nguyen L, Moonen G, Malgrange B. Cycling or not cycling: cell cycle regulatory molecules and adult neurogenesis. Cell Mol Life Sci 2011; 69:1493-503. [DOI: 10.1007/s00018-011-0880-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Revised: 10/10/2011] [Accepted: 10/27/2011] [Indexed: 12/11/2022]
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Beukelaers P, Vandenbosch R, Caron N, Nguyen L, Belachew S, Moonen G, Kiyokawa H, Barbacid M, Santamaria D, Malgrange B. Cdk6-dependent regulation of G(1) length controls adult neurogenesis. Stem Cells 2011; 29:713-24. [PMID: 21319271 DOI: 10.1002/stem.616] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The presence of neurogenic precursors in the adult mammalian brain is now widely accepted, but the mechanisms coupling their proliferation with the onset of neuronal differentiation remain unknown. Here, we unravel the major contribution of the G(1) regulator cyclin-dependent kinase 6 (Cdk6) to adult neurogenesis. We found that Cdk6 was essential for cell proliferation within the dentate gyrus of the hippocampus and the subventricular zone of the lateral ventricles. Specifically, Cdk6 deficiency prevents the expansion of neuronally committed precursors by lengthening G(1) phase duration, reducing concomitantly the production of newborn neurons. Altogether, our data support G(1) length as an essential regulator of the switch between proliferation and neuronal differentiation in the adult brain and Cdk6 as one intrinsic key molecular regulator of this process.
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Abstract
In mammals, sensorineural deafness results from damage to the auditory receptors of the inner ear, the nerve pathways to the brain or the cortical area that receives sound information. In this review, we first focused on the cellular and molecular events taking part to spiral ganglion axon growth, extension to the organ of Corti, and refinement. In the second half, we considered the functional maturation of synaptic contacts between sensory hair cells and their afferent projections. A better understanding of all these processes could open insights into novel therapeutic strategies aimed to re-establish primary connections from sound transducers to the ascending auditory nerve pathways.
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Caillava C, Vandenbosch R, Jablonska B, Deboux C, Spigoni G, Gallo V, Malgrange B, Baron-Van Evercooren A. Cdk2 loss accelerates precursor differentiation and remyelination in the adult central nervous system. ACTA ACUST UNITED AC 2011; 193:397-407. [PMID: 21502361 PMCID: PMC3080270 DOI: 10.1083/jcb.201004146] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [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] [Indexed: 12/22/2022]
Abstract
Cdk2 is not essential for oligodendrocyte maturation and myelination during development, but in response to demyelination, it is required for oligodendrocyte precursor cell proliferation (OPC), and its loss accelerates OPC differentiation and remyelination. The specific functions of intrinsic regulators of oligodendrocyte progenitor cell (OPC) division are poorly understood. Type 2 cyclin-dependent kinase (Cdk2) controls cell cycle progression of OPCs, but whether it acts during myelination and repair of demyelinating lesions remains unexplored. Here, we took advantage of a viable Cdk2−/− mutant mouse to investigate the function of this cell cycle regulator in OPC proliferation and differentiation in normal and pathological conditions. During central nervous system (CNS) development, Cdk2 loss does not affect OPC cell cycle, oligodendrocyte cell numbers, or myelination. However, in response to CNS demyelination, it clearly alters adult OPC renewal, cell cycle exit, and differentiation. Importantly, Cdk2 loss accelerates CNS remyelination of demyelinated axons. Thus, Cdk2 is dispensable for myelination but is important for adult OPC renewal, and could be one of the underlying mechanisms that drive adult progenitors to differentiate and thus regenerate myelin.
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Affiliation(s)
- Céline Caillava
- UMR-S975, Centre de Recherche de l'Institut du Cerveau et de la Moelle Epinière, Université Pierre et Marie Curie-Paris 6, Paris 75013, France
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Malgrange B, Borgs L, Grobarczyk B, Purnelle A, Ernst P, Moonen G, Nguyen L. Using human pluripotent stem cells to untangle neurodegenerative disease mechanisms. Cell Mol Life Sci 2010; 68:635-49. [PMID: 20976521 DOI: 10.1007/s00018-010-0557-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2010] [Revised: 09/14/2010] [Accepted: 10/04/2010] [Indexed: 12/12/2022]
Abstract
Human pluripotent stem cells, including embryonic (hES) and induced pluripotent stem cells (hiPS), retain the ability to self-renew indefinitely, while maintaining the capacity to differentiate into all cell types of the nervous system. While human pluripotent cell-based therapies are unlikely to arise soon, these cells can currently be used as an inexhaustible source of committed neurons to perform high-throughput screening and safety testing of new candidate drugs. Here, we describe critically the available methods and molecular factors that are used to direct the differentiation of hES or hiPS into specific neurons. In addition, we discuss how the availability of patient-specific hiPS offers a unique opportunity to model inheritable neurodegenerative diseases and untangle their pathological mechanisms, or to validate drugs that would prevent the onset or the progression of these neurological disorders.
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L. Poirrier A, Pincemail J, Van Den Ackerveken P, P. Lefebvre P, Malgrange B. Oxidative Stress in the Cochlea: An Update. Curr Med Chem 2010; 17:3591-604. [DOI: 10.2174/092986710792927895] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Accepted: 08/02/2010] [Indexed: 11/22/2022]
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49
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Breuskin I, Bodson M, Thelen N, Thiry M, Borgs L, Nguyen L, Stolt C, Wegner M, Lefebvre PP, Malgrange B. Glial but not neuronal development in the cochleo-vestibular ganglion requires Sox10. J Neurochem 2010; 114:1827-39. [PMID: 20626560 DOI: 10.1111/j.1471-4159.2010.06897.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The cochleo-vestibular ganglion contains neural crest-derived glial cells and sensory neurons that are derived from the neurogenic otic placode. Little is known about the molecular mechanisms that regulate the tightly orchestrated development of this structure. Here, we report that Sox10, a high-mobility group DNA-binding domain transcription factor that is required for the proper development of neural crest cell derivatives, is specifically expressed in post-migratory neural crest cells in the cochleo-vestibular ganglion. Using Sox10-deficient mice, we demonstrate that this transcription factor is essential for the survival, but not the generation, of the post-migratory neural crest cells within the inner ear. In the absence of these neural crest-derived cells, we have investigated the survival of the otocyst-derived auditory neurons. Surprisingly, auditory neuron differentiation, sensory target innervation and survival are conserved despite the absence of glial cells. Moreover, brain-derived neurotrophic factor expression is increased in the hair cells of Sox10-deficient mice, a compensatory mechanism that may prevent spiral ganglion neuronal cell death. Taken together, these data suggest that in the absence of neural crest-derived glial cells, an increase trophic support from hair cells promotes the survival of spiral ganglion neurons in Sox10 mutant mice.
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50
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Abstract
Hair cell loss in higher vertebrates appears to be permanent. Progenitors that are quiescent in the organ of Corti are the best candidates for the restoration of the different cell types in the organ of Corti. However, little is known about the presence of these progenitors and their capacity to differentiate into hair cells. This review will first highlight recent findings concerning the identification of progenitor cells that are able to proliferate and to differentiate into hair cells. Principal factors impinging on this process are then reviewed. Auditory hair cell progenitors have been identified and, under appropriate conditions, are capable of proliferating and differentiating into hair cells. Characterization of signals that maintain, expand and regulate these progenitors will be essential for the biomedical application of stem cell populations to restore hearing.
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