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Laporte MH, Bouhlel IB, Bertiaux E, Morrison CG, Giroud A, Borgers S, Azimzadeh J, Bornens M, Guichard P, Paoletti A, Hamel V. Human SFI1 and Centrin form a complex critical for centriole architecture and ciliogenesis. EMBO J 2022; 41:e112107. [PMID: 36125182 DOI: 10.15252/embj.2022112107] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 08/23/2022] [Accepted: 09/02/2022] [Indexed: 11/09/2022] Open
Abstract
Over the course of evolution, the centrosome function has been conserved in most eukaryotes, but its core architecture has evolved differently in some clades, with the presence of centrioles in humans and a spindle pole body (SPB) in yeast. Similarly, the composition of these two core elements has diverged, with the exception of Centrin and SFI1, which form a complex in yeast to initiate SPB duplication. However, it remains unclear whether this complex exists at centrioles and whether its function has been conserved. Here, using expansion microscopy, we demonstrate that human SFI1 is a centriolar protein that associates with a pool of Centrin at the distal end of the centriole. We also find that both proteins are recruited early during procentriole assembly and that depletion of SFI1 results in the loss of the distal pool of Centrin, without altering centriole duplication. Instead, we show that SFI1/Centrin complex is essential for centriolar architecture, CEP164 distribution, and CP110 removal during ciliogenesis. Together, our work reveals a conserved SFI1/Centrin module displaying divergent functions between mammals and yeast.
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Affiliation(s)
- Marine H Laporte
- Department of Molecular and Cellular Biology, University of Geneva, Geneva, Switzerland
| | - Imène B Bouhlel
- Institut Curie, UMR 144, CNRS, PSL University, Paris, France
| | - Eloïse Bertiaux
- Department of Molecular and Cellular Biology, University of Geneva, Geneva, Switzerland
| | - Ciaran G Morrison
- Department of Molecular and Cellular Biology, University of Geneva, Geneva, Switzerland.,Centre for Chromosome Biology, School of Biological and Chemical Sciences, National University of Ireland Galway, Galway, Ireland
| | - Alexia Giroud
- Department of Molecular and Cellular Biology, University of Geneva, Geneva, Switzerland
| | - Susanne Borgers
- Department of Molecular and Cellular Biology, University of Geneva, Geneva, Switzerland
| | | | - Michel Bornens
- Institut Curie, UMR 144, CNRS, PSL University, Paris, France
| | - Paul Guichard
- Department of Molecular and Cellular Biology, University of Geneva, Geneva, Switzerland
| | - Anne Paoletti
- Institut Curie, UMR 144, CNRS, PSL University, Paris, France
| | - Virginie Hamel
- Department of Molecular and Cellular Biology, University of Geneva, Geneva, Switzerland
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Abstract
Centrosomes are important organizers of microtubules within animal cells. They comprise a pair of centrioles surrounded by the pericentriolar material, which nucleates and organizes the microtubules. To maintain centrosome numbers, centrioles must duplicate once and only once per cell cycle. During S-phase, a single new ‘daughter’ centriole is built orthogonally on one side of each radially symmetric ‘mother’ centriole. Mis-regulation of duplication can result in the simultaneous formation of multiple daughter centrioles around a single mother centriole, leading to centrosome amplification, a hallmark of cancer. It remains unclear how a single duplication site is established. It also remains unknown whether this site is pre-defined or randomly positioned around the mother centriole. Here, we show that within Drosophila syncytial embryos daughter centrioles preferentially assemble on the side of the mother facing the nuclear envelope, to which the centrosomes are closely attached. This positional preference is established early during duplication and remains stable throughout daughter centriole assembly, but is lost in centrosomes forced to lose their connection to the nuclear envelope. This shows that non-centrosomal cues influence centriole duplication and raises the possibility that these external cues could help establish a single duplication site.
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Affiliation(s)
- Neil H J Cunningham
- Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK
| | - Imène B Bouhlel
- Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK
| | - Paul T Conduit
- Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK.,Université de Paris, CNRS, Institut Jacques Monod, 75006 Paris, France
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Bouhlel IB, Scheffler K, Tran PT, Paoletti A. Monitoring SPB biogenesis in fission yeast with high resolution and quantitative fluorescent microscopy. Methods Cell Biol 2015; 129:383-392. [PMID: 26175449 DOI: 10.1016/bs.mcb.2015.03.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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] [Indexed: 12/30/2022]
Abstract
Like centrosomes, yeast spindle pole bodies (SPBs) undergo a tightly controlled duplication cycle in order to restrict their number to one or two per cell and promote the assembly of a bipolar spindle at mitotic entry. This conservative duplication cycle is tightly coordinated with cell cycle progression although the mechanisms that ensure this coordination remain largely unknown. In this chapter, we describe simple high resolution microscopy- and quantitative light microscopy-based methods that allow to monitor SPB biogenesis in fission yeast and may be useful to study the molecular pathways controlling the successive phases of the duplication cycle.
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Affiliation(s)
- Imène B Bouhlel
- Centre de Recherche, Institut Curie, Paris, France; CNRS-UMR144, Paris, France
| | - Kathleen Scheffler
- Centre de Recherche, Institut Curie, Paris, France; CNRS-UMR144, Paris, France
| | - Phong T Tran
- Centre de Recherche, Institut Curie, Paris, France; CNRS-UMR144, Paris, France
| | - Anne Paoletti
- Centre de Recherche, Institut Curie, Paris, France; CNRS-UMR144, Paris, France
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Morchoisne-Bolhy S, Geoffroy MC, Bouhlel IB, Alves A, Audugé N, Baudin X, Van Bortle K, Powers MA, Doye V. Intranuclear dynamics of the Nup107-160 complex. Mol Biol Cell 2015; 26:2343-56. [PMID: 25904327 PMCID: PMC4462950 DOI: 10.1091/mbc.e15-02-0060] [Citation(s) in RCA: 27] [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] [Received: 02/10/2015] [Accepted: 04/14/2015] [Indexed: 12/11/2022] Open
Abstract
The Nup107-160 nuclear pore subcomplex (Y-complex) and the chromatin-binding nucleoporin Elys dynamically colocalize with Nup98 and the export factor CRM1 in nuclear GLFG bodies present in HeLa sublines. Thus, in addition to its structural role at the NPC and its mitotic functions, the Y-complex may also act inside the nucleus during interphase. Nup98 is a glycine-leucine-phenylalanine-glycine (GLFG) repeat–containing nucleoporin that, in addition to nuclear transport, contributes to multiple aspects of gene regulation. Previous studies revealed its dynamic localization within intranuclear structures known as GLFG bodies. Here we show that the mammalian Nup107-160 complex (Y-complex), a major scaffold module of the nuclear pore, together with its partner Elys, colocalizes with Nup98 in GLFG bodies. The frequency and size of GLFG bodies vary among HeLa sublines, and we find that an increased level of Nup98 is associated with the presence of bodies. Recruitment of the Y-complex and Elys into GLFG bodies requires the C-terminal domain of Nup98. During cell division, Y-Nup–containing GLFG bodies are disassembled in mitotic prophase, significantly ahead of nuclear pore disassembly. FRAP studies revealed that, unlike at nuclear pores, the Y-complex shuttles into and out of GLFG bodies. Finally, we show that within the nucleoplasm, a fraction of Nup107, a key component of the Y-complex, displays reduced mobility, suggesting interaction with other nuclear components. Together our data uncover a previously neglected intranuclear pool of the Y-complex that may underscore a yet-uncharacterized function of these nucleoporins inside the nucleus, even in cells that contain no detectable GLFG bodies.
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Affiliation(s)
| | - Marie-Claude Geoffroy
- Institut Jacques Monod, CNRS UMR7592-Université Paris Diderot, Sorbonne Paris Cité, 75205 Paris, France
| | - Imène B Bouhlel
- Institut Jacques Monod, CNRS UMR7592-Université Paris Diderot, Sorbonne Paris Cité, 75205 Paris, France
| | - Annabelle Alves
- Institut Jacques Monod, CNRS UMR7592-Université Paris Diderot, Sorbonne Paris Cité, 75205 Paris, France Ecole Doctorale Gènes Génomes Cellules, Université Paris Sud, 91405 Orsay, France
| | - Nicolas Audugé
- Institut Jacques Monod, CNRS UMR7592-Université Paris Diderot, Sorbonne Paris Cité, 75205 Paris, France
| | - Xavier Baudin
- ImagoSeine Imaging Facility, Institut Jacques Monod, 75205 Paris, France
| | - Kevin Van Bortle
- Department of Cell Biology and Biochemistry, Cell and Developmental Biology Graduate Program, Emory University School of Medicine, Atlanta, GA 30322
| | - Maureen A Powers
- Department of Cell Biology and Biochemistry, Cell and Developmental Biology Graduate Program, Emory University School of Medicine, Atlanta, GA 30322
| | - Valérie Doye
- Institut Jacques Monod, CNRS UMR7592-Université Paris Diderot, Sorbonne Paris Cité, 75205 Paris, France
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Bouhlel IB, Ohta M, Mayeux A, Bordes N, Dingli F, Boulanger J, Velve Casquillas G, Loew D, Tran PT, Sato M, Paoletti A. Cell cycle control of spindle pole body duplication and splitting by Sfi1 and Cdc31 in fission yeast. J Cell Sci 2015; 128:1481-93. [PMID: 25736294 DOI: 10.1242/jcs.159657] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [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: 07/11/2014] [Accepted: 02/23/2015] [Indexed: 02/02/2023] Open
Abstract
Spindle pole biogenesis and segregation are tightly coordinated to produce a bipolar mitotic spindle. In yeasts, the spindle pole body (SPB) half-bridge composed of Sfi1 and Cdc31 duplicates to promote the biogenesis of a second SPB. Sfi1 accumulates at the half-bridge in two phases in Schizosaccharomyces pombe, from anaphase to early septation and throughout G2 phase. We found that the function of Sfi1-Cdc31 in SPB duplication is accomplished before septation ends and G2 accumulation starts. Thus, Sfi1 early accumulation at mitotic exit might correspond to half-bridge duplication. We further show that Cdc31 phosphorylation on serine 15 in a Cdk1 (encoded by cdc2) consensus site is required for the dissociation of a significant pool of Sfi1 from the bridge and timely segregation of SPBs at mitotic onset. This suggests that the Cdc31 N-terminus modulates the stability of Sfi1-Cdc31 arrays in fission yeast, and impacts on the timing of establishment of spindle bipolarity.
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Affiliation(s)
- Imène B Bouhlel
- Institut Curie, Centre de Recherche F-75248 Paris, France CNRS UMR144 F-75248 Paris, France
| | | | - Adeline Mayeux
- Institut Curie, Centre de Recherche F-75248 Paris, France CNRS UMR144 F-75248 Paris, France
| | - Nicole Bordes
- Institut Curie, Centre de Recherche F-75248 Paris, France CNRS UMR144 F-75248 Paris, France
| | - Florent Dingli
- Institut Curie, Centre de Recherche F-75248 Paris, France
| | - Jérôme Boulanger
- Institut Curie, Centre de Recherche F-75248 Paris, France CNRS UMR144 F-75248 Paris, France
| | | | - Damarys Loew
- Institut Curie, Centre de Recherche F-75248 Paris, France
| | - Phong T Tran
- Institut Curie, Centre de Recherche F-75248 Paris, France CNRS UMR144 F-75248 Paris, France
| | | | - Anne Paoletti
- Institut Curie, Centre de Recherche F-75248 Paris, France CNRS UMR144 F-75248 Paris, France
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