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Labusch M, Thetiot M, Than-Trong E, Morizet D, Coolen M, Varet H, Legendre R, Ortica S, Mancini L, Bally-Cuif L. Prosaposin maintains adult neural stem cells in a state associated with deep quiescence. Stem Cell Reports 2024; 19:515-528. [PMID: 38518783 DOI: 10.1016/j.stemcr.2024.02.007] [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: 08/12/2023] [Revised: 02/23/2024] [Accepted: 02/26/2024] [Indexed: 03/24/2024] Open
Abstract
In most vertebrates, adult neural stem cells (NSCs) continuously give rise to neurons in discrete brain regions. A critical process for maintaining NSC pools over long periods of time in the adult brain is NSC quiescence, a reversible and tightly regulated state of cell-cycle arrest. Recently, lysosomes were identified to regulate the NSC quiescence-proliferation balance. However, it remains controversial whether lysosomal activity promotes NSC proliferation or quiescence, and a finer influence of lysosomal activity on NSC quiescence duration or depth remains unexplored. Using RNA sequencing and pharmacological manipulations, we show that lysosomes are necessary for NSC quiescence maintenance. In addition, we reveal that expression of psap, encoding the lysosomal regulator Prosaposin, is enriched in quiescent NSCs (qNSCs) that reside upstream in the NSC lineage and display a deep/long quiescence phase in the adult zebrafish telencephalon. We show that shRNA-mediated psap knockdown increases the proportion of activated NSCs (aNSCs) as well as NSCs that reside in shallower quiescence states (signed by ascl1a and deltaA expression). Collectively, our results identify the lysosomal protein Psap as a (direct or indirect) quiescence regulator and unfold the interplay between lysosomal function and NSC quiescence heterogeneities.
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Affiliation(s)
- Miriam Labusch
- Institut Pasteur, Université Paris Cité, CNRS UMR3738, Zebrafish Neurogenetics Unit, 75015 Paris, France; Sorbonne Université, Collège doctoral, 75005 Paris, France
| | - Melina Thetiot
- Institut Pasteur, Université Paris Cité, CNRS UMR3738, Zebrafish Neurogenetics Unit, 75015 Paris, France
| | - Emmanuel Than-Trong
- Institut Pasteur, Université Paris Cité, CNRS UMR3738, Zebrafish Neurogenetics Unit, 75015 Paris, France
| | - David Morizet
- Institut Pasteur, Université Paris Cité, CNRS UMR3738, Zebrafish Neurogenetics Unit, 75015 Paris, France; Sorbonne Université, Collège doctoral, 75005 Paris, France
| | - Marion Coolen
- Institut Pasteur, Université Paris Cité, CNRS UMR3738, Zebrafish Neurogenetics Unit, 75015 Paris, France
| | - Hugo Varet
- Institut Pasteur, Université Paris Cité, Platform Biomics, 75015 Paris, France
| | - Rachel Legendre
- Institut Pasteur, Université Paris Cité, Platform Biomics, 75015 Paris, France
| | - Sara Ortica
- Institut Pasteur, Université Paris Cité, CNRS UMR3738, Zebrafish Neurogenetics Unit, 75015 Paris, France
| | - Laure Mancini
- Institut Pasteur, Université Paris Cité, CNRS UMR3738, Zebrafish Neurogenetics Unit, 75015 Paris, France; Sorbonne Université, Collège doctoral, 75005 Paris, France
| | - Laure Bally-Cuif
- Institut Pasteur, Université Paris Cité, CNRS UMR3738, Zebrafish Neurogenetics Unit, 75015 Paris, France.
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Mancini L, Guirao B, Ortica S, Labusch M, Cheysson F, Bonnet V, Phan MS, Herbert S, Mahou P, Menant E, Bedu S, Tinevez JY, Baroud C, Beaurepaire E, Bellaiche Y, Bally-Cuif L, Dray N. Apical size and deltaA expression predict adult neural stem cell decisions along lineage progression. Sci Adv 2023; 9:eadg7519. [PMID: 37656795 PMCID: PMC10854430 DOI: 10.1126/sciadv.adg7519] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 08/02/2023] [Indexed: 09/03/2023]
Abstract
The maintenance of neural stem cells (NSCs) in the adult brain depends on their activation frequency and division mode. Using long-term intravital imaging of NSCs in the zebrafish adult telencephalon, we reveal that apical surface area and expression of the Notch ligand DeltaA predict these NSC decisions. deltaA-negative NSCs constitute a bona fide self-renewing NSC pool and systematically engage in asymmetric divisions generating a self-renewing deltaAneg daughter, which regains the size and behavior of its mother, and a neurogenic deltaApos daughter, eventually engaged in neuronal production following further quiescence-division phases. Pharmacological and genetic manipulations of Notch, DeltaA, and apical size further show that the prediction of activation frequency by apical size and the asymmetric divisions of deltaAneg NSCs are functionally independent of Notch. These results provide dynamic qualitative and quantitative readouts of NSC lineage progression in vivo and support a hierarchical organization of NSCs in differently fated subpopulations.
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Affiliation(s)
- Laure Mancini
- Institut Pasteur, Université Paris Cité, CNRS UMR3738, Zebrafish Neurogenetics Unit, Team supported by the Ligue Nationale Contre le Cancer, Paris 75015, France
- Sorbonne Université, Collège Doctoral, Paris F-75005, France
| | - Boris Guirao
- Institut Curie, Université PSL, Sorbonne Université, CNRS UMR 3215, Inserm U934, Genetics and Developmental Biology, Paris 75005, France
| | - Sara Ortica
- Institut Pasteur, Université Paris Cité, CNRS UMR3738, Zebrafish Neurogenetics Unit, Team supported by the Ligue Nationale Contre le Cancer, Paris 75015, France
| | - Miriam Labusch
- Institut Pasteur, Université Paris Cité, CNRS UMR3738, Zebrafish Neurogenetics Unit, Team supported by the Ligue Nationale Contre le Cancer, Paris 75015, France
- Sorbonne Université, Collège Doctoral, Paris F-75005, France
| | - Felix Cheysson
- LPSM, Sorbonne Université, UMR CNRS 8001, Paris 75005, France
| | - Valentin Bonnet
- Institut Pasteur, Université Paris Cité, Physical Microfluidics and Bioengineering, Paris F-75015, France
- LadHyX, CNRS, Ecole Polytechnique, IP Paris, Palaiseau 91120, France
| | - Minh Son Phan
- Institut Pasteur, Université Paris Cité, Image Analysis Hub, Paris, France
| | - Sébastien Herbert
- Institut Pasteur, Université Paris Cité, Image Analysis Hub, Paris, France
| | - Pierre Mahou
- Laboratory for Optics and Biosciences, CNRS, INSERM, Ecole Polytechnique, IP Paris, Palaiseau, France
| | - Emilie Menant
- Laboratory for Optics and Biosciences, CNRS, INSERM, Ecole Polytechnique, IP Paris, Palaiseau, France
| | - Sébastien Bedu
- Institut Pasteur, Université Paris Cité, CNRS UMR3738, Zebrafish Neurogenetics Unit, Team supported by the Ligue Nationale Contre le Cancer, Paris 75015, France
| | - Jean-Yves Tinevez
- Institut Pasteur, Université Paris Cité, Image Analysis Hub, Paris, France
| | - Charles Baroud
- Institut Pasteur, Université Paris Cité, Physical Microfluidics and Bioengineering, Paris F-75015, France
- LadHyX, CNRS, Ecole Polytechnique, IP Paris, Palaiseau 91120, France
| | - Emmanuel Beaurepaire
- Laboratory for Optics and Biosciences, CNRS, INSERM, Ecole Polytechnique, IP Paris, Palaiseau, France
| | - Yohanns Bellaiche
- Institut Curie, Université PSL, Sorbonne Université, CNRS UMR 3215, Inserm U934, Genetics and Developmental Biology, Paris 75005, France
| | - Laure Bally-Cuif
- Institut Pasteur, Université Paris Cité, CNRS UMR3738, Zebrafish Neurogenetics Unit, Team supported by the Ligue Nationale Contre le Cancer, Paris 75015, France
| | - Nicolas Dray
- Institut Pasteur, Université Paris Cité, CNRS UMR3738, Zebrafish Neurogenetics Unit, Team supported by the Ligue Nationale Contre le Cancer, Paris 75015, France
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Dray N, Mancini L, Binshtok U, Cheysson F, Supatto W, Mahou P, Bedu S, Ortica S, Than-Trong E, Krecsmarik M, Herbert S, Masson JB, Tinevez JY, Lang G, Beaurepaire E, Sprinzak D, Bally-Cuif L. Dynamic spatiotemporal coordination of neural stem cell fate decisions occurs through local feedback in the adult vertebrate brain. Cell Stem Cell 2021; 28:1457-1472.e12. [PMID: 33823144 PMCID: PMC8363814 DOI: 10.1016/j.stem.2021.03.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 12/21/2020] [Accepted: 03/16/2021] [Indexed: 12/12/2022]
Abstract
Neural stem cell (NSC) populations persist in the adult vertebrate brain over a lifetime, and their homeostasis is controlled at the population level through unknown mechanisms. Here, we combine dynamic imaging of entire NSC populations in their in vivo niche over several weeks with pharmacological manipulations, mathematical modeling, and spatial statistics and demonstrate that NSCs use spatiotemporally resolved local feedback signals to coordinate their decision to divide in adult zebrafish brains. These involve Notch-mediated short-range inhibition from transient neural progenitors and a dispersion effect from the dividing NSCs themselves exerted with a delay of 9–12 days. Simulations from a stochastic NSC lattice model capturing these interactions demonstrate that these signals are linked by lineage progression and control the spatiotemporal distribution of output neurons. These results highlight how local and temporally delayed interactions occurring between brain germinal cells generate self-propagating dynamics that maintain NSC population homeostasis and coordinate specific spatiotemporal correlations. NSC activation events are spatiotemporally coordinated within adult NSC populations This involves inhibition by neural progenitors (relying on Notch) and by dividing NSCs A dynamic lattice model shows that these interactions are linked by lineage progression NSCs dynamics generate an intrinsic niche that maintains the NSC population long-term
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Affiliation(s)
- Nicolas Dray
- Zebrafish Neurogenetics Unit, Institut Pasteur, UMR3738, CNRS, team supported by La Ligue Nationale Contre le Cancer, 75015 Paris, France.
| | - Laure Mancini
- Zebrafish Neurogenetics Unit, Institut Pasteur, UMR3738, CNRS, team supported by La Ligue Nationale Contre le Cancer, 75015 Paris, France; Sorbonne Université, Collège doctoral, 75005 Paris, France
| | - Udi Binshtok
- School of Neurobiology, Biochemistry, and Biophysics, The George S. Wise Faculty of Life Sciences, Tel Aviv University, 69978 Tel Aviv, Israel
| | - Felix Cheysson
- Université Paris-Saclay, AgroParisTech, INRAE, UMR MIA-Paris, 75005 Paris, France; Epidemiology and Modeling of Bacterial Evasion to Antibacterials Unit (EMEA), Institut Pasteur, 75015 Paris, France; Anti-infective Evasion and Pharmacoepidemiology Team, Centre for Epidemiology and Public Health (CESP), INSERM/UVSQ, Villejuif Cedex, France
| | - Willy Supatto
- Laboratory for Optics and Biosciences, Ecole Polytechnique, CNRS, INSERM, IP Paris, 91128 Palaiseau, France
| | - Pierre Mahou
- Laboratory for Optics and Biosciences, Ecole Polytechnique, CNRS, INSERM, IP Paris, 91128 Palaiseau, France
| | - Sébastien Bedu
- Zebrafish Neurogenetics Unit, Institut Pasteur, UMR3738, CNRS, team supported by La Ligue Nationale Contre le Cancer, 75015 Paris, France
| | - Sara Ortica
- Zebrafish Neurogenetics Unit, Institut Pasteur, UMR3738, CNRS, team supported by La Ligue Nationale Contre le Cancer, 75015 Paris, France
| | - Emmanuel Than-Trong
- Zebrafish Neurogenetics Unit, Institut Pasteur, UMR3738, CNRS, team supported by La Ligue Nationale Contre le Cancer, 75015 Paris, France
| | - Monika Krecsmarik
- Zebrafish Neurogenetics Unit, Institut Pasteur, UMR3738, CNRS, team supported by La Ligue Nationale Contre le Cancer, 75015 Paris, France
| | - Sébastien Herbert
- Department of Developmental and Stem Cell Biology, Institut Pasteur, 75015 Paris, France; Image Analysis Hub, Institut Pasteur, 75015 Paris, France
| | - Jean-Baptiste Masson
- Department of Neuroscience and Department of Computational Biology, Institut Pasteur, 75015 Paris, France
| | | | - Gabriel Lang
- Université Paris-Saclay, AgroParisTech, INRAE, UMR MIA-Paris, 75005 Paris, France
| | - Emmanuel Beaurepaire
- Laboratory for Optics and Biosciences, Ecole Polytechnique, CNRS, INSERM, IP Paris, 91128 Palaiseau, France
| | - David Sprinzak
- School of Neurobiology, Biochemistry, and Biophysics, The George S. Wise Faculty of Life Sciences, Tel Aviv University, 69978 Tel Aviv, Israel.
| | - Laure Bally-Cuif
- Zebrafish Neurogenetics Unit, Institut Pasteur, UMR3738, CNRS, team supported by La Ligue Nationale Contre le Cancer, 75015 Paris, France.
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Than-Trong E, Kiani B, Dray N, Ortica S, Simons B, Rulands S, Alunni A, Bally-Cuif L. Lineage hierarchies and stochasticity ensure the long-term maintenance of adult neural stem cells. Sci Adv 2020; 6:eaaz5424. [PMID: 32426477 PMCID: PMC7190328 DOI: 10.1126/sciadv.aaz5424] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 02/11/2020] [Indexed: 05/27/2023]
Abstract
The cellular basis and extent of neural stem cell (NSC) self-renewal in adult vertebrates, and their heterogeneity, remain controversial. To explore the functional behavior and dynamics of individual NSCs, we combined genetic lineage tracing, quantitative clonal analysis, intravital imaging, and global population assessments in the adult zebrafish telencephalon. Our results are compatible with a model where adult neurogenesis is organized in a hierarchy in which a subpopulation of deeply quiescent reservoir NSCs with long-term self-renewal potential generate, through asymmetric divisions, a pool of operational NSCs activating more frequently and taking stochastic fates biased toward neuronal differentiation. Our data further suggest the existence of an additional, upstream, progenitor population that supports the continuous generation of new reservoir NSCs, thus contributing to their overall expansion. Hence, we propose that the dynamics of vertebrate neurogenesis relies on a hierarchical organization where growth, self-renewal, and neurogenic functions are segregated between different NSC types.
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Affiliation(s)
- Emmanuel Than-Trong
- Zebrafish Neurogenetics Unit, Institut Pasteur, UMR3738, CNRS, Team supported by the Ligue Nationale Contre le Cancer, Paris 75015, France
- Université Paris-Saclay, Ecole Doctorale Biosigne, Le Kremlin-Bicêtre, France
| | - Bahareh Kiani
- Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Straße 38, 01187 Dresden, Germany
| | - Nicolas Dray
- Zebrafish Neurogenetics Unit, Institut Pasteur, UMR3738, CNRS, Team supported by the Ligue Nationale Contre le Cancer, Paris 75015, France
| | - Sara Ortica
- Zebrafish Neurogenetics Unit, Institut Pasteur, UMR3738, CNRS, Team supported by the Ligue Nationale Contre le Cancer, Paris 75015, France
| | - Benjamin Simons
- Department of Applied Mathematics and Theoretical Physics, Centre for Mathematical Sciences, University of Cambridge, Cambridge, UK
- Wellcome Trust/Cancer Research UK Gurdon Institute, University of Cambridge, Cambridge UK
- Wellcome Trust/Medical Research Council Stem Cell Institute, University of Cambridge, Cambridge UK
| | - Steffen Rulands
- Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Straße 38, 01187 Dresden, Germany
- Center for Systems Biology Dresden, Pfotenhauer Str. 108, 01307 Dresden, Germany
| | - Alessandro Alunni
- Zebrafish Neurogenetics Unit, Institut Pasteur, UMR3738, CNRS, Team supported by the Ligue Nationale Contre le Cancer, Paris 75015, France
| | - Laure Bally-Cuif
- Zebrafish Neurogenetics Unit, Institut Pasteur, UMR3738, CNRS, Team supported by the Ligue Nationale Contre le Cancer, Paris 75015, France
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Ortica S, Tarantino N, Aulner N, Israël A, Gupta-Rossi N. The 4 Notch receptors play distinct and antagonistic roles in the proliferation and hepatocytic differentiation of liver progenitors. FASEB J 2013; 28:603-14. [PMID: 24145721 DOI: 10.1096/fj.13-235903] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The Notch signaling pathway is involved in liver development and regeneration. Here, we investigate the role of the 4 mammalian Notch paralogs in the regulation of hepatoblast proliferation and hepatocytic differentiation. Our model is based on bipotential mouse embryonic liver (BMEL) progenitors that can differentiate into hepatocytes or cholangiocytes in vitro and in vivo. BMEL cells were subjected to Notch antagonists or agonists. Blocking Notch activation with a γ-secretase inhibitor, at 50 μM for 48 h, reduced cell growth by 50%. S-phase entry was impaired, but no apoptosis was induced. A systematic paralog-specific strategy was set using lentiviral transduction with constitutively active forms of each Notch receptor along with inhibition of endogenous Notch signaling. This assay demonstrates that proliferation of BMEL cells requires Notch2 and Notch4 activity, resulting in significant down-regulation of p27(Kip1) and p57(Kip2) cyclin-dependent kinase inhibitors. Conversely, Notch3-expressing cells proliferate less and express 3-fold higher levels of p57(Kip2). The Notch3 cells present a hepatocyte-like morphology, enhanced multinucleation, and a ploidy shift. Moreover, Notch3 activity is conducive to hepatocytic differentiation in vitro, while its paralogs impede this fate. Our study provides the first evidence of a functional diversity among the mammalian Notch homologues in the proliferation and hepatocytic-lineage commitment of liver progenitors.
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Affiliation(s)
- Sara Ortica
- 1Unité de Signalisation Moléculaire et Activation Cellulaire, URA 2582 CNRS, Institut Pasteur, 25 rue du Dr Roux, 75724 Paris Cedex 15, France.
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Gupta-Rossi N, Ortica S, Meas-Yedid V, Heuss S, Moretti J, Olivo-Marin JC, Israël A. The adaptor-associated kinase 1, AAK1, is a positive regulator of the Notch pathway. J Biol Chem 2011; 286:18720-30. [PMID: 21464124 PMCID: PMC3099689 DOI: 10.1074/jbc.m110.190769] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [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: 10/01/2010] [Revised: 03/04/2011] [Indexed: 11/06/2022] Open
Abstract
The Notch pathway is involved in cell-cell signaling during development and adulthood from invertebrates to higher eukaryotes. Activation of the Notch receptor by its ligands relies upon a multi-step processing. The extracellular part of the receptor is removed by a metalloprotease of the ADAM family and the remaining fragment is cleaved within its transmembrane domain by a presenilin-dependent γ-secretase activity. γ-Secretase processing of Notch has been shown to depend upon monoubiquitination as well as clathrin-mediated endocytosis (CME). We show here that AAK1, the adaptor-associated kinase 1, directly interacts with the membrane-tethered active form of Notch released by metalloprotease cleavage. Active AAK1 acts upstream of the γ-secretase cleavage by stabilizing both the membrane-tethered activated form of Notch and its monoubiquitinated counterpart. We propose that AAK1 acts as an adaptor for Notch interaction with components of the clathrin-mediated pathway such as Eps15b. Moreover, transfected AAK1 increases the localization of activated Notch to Rab5-positive endocytic vesicles, while AAK1 depletion or overexpression of Numb, an inhibitor of the pathway, interferes with this localization. These results suggest that after ligand-induced activation of Notch, the membrane-tethered form can be directed to different endocytic pathways leading to distinct fates.
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Affiliation(s)
- Neetu Gupta-Rossi
- Unité de Signalisation Moléculaire et Activation Cellulaire, CNRS URA 2582, CNRS URA 2582, Institut Pasteur, 25 rue du Dr Roux, 75724 Paris Cedex 15, France.
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