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Tessier CE, Dupuy AMM, Pelé T, Juin PP, Lees JA, Guen VJ. EMT and primary ciliogenesis: For better or worse in sickness and in health. Genesis 2024; 62:e23568. [PMID: 37946671 DOI: 10.1002/dvg.23568] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/23/2023] [Accepted: 10/13/2023] [Indexed: 11/12/2023]
Abstract
Epithelial-mesenchymal transition (EMT) and primary ciliogenesis are two cell-biological programs that are essential for development of multicellular organisms and whose abnormal regulation results in many diseases (i.e., developmental anomalies and cancers). Emerging studies suggest an intricate interplay between these two processes. Here, we discuss physiological and pathological contexts in which their interconnections promote normal development or disease progression. We describe underlying molecular mechanisms of the interplay and EMT/ciliary signaling axes that influence EMT-related processes (i.e., stemness, motility and invasion). Understanding the molecular and cellular mechanisms of the relationship between EMT and primary ciliogenesis may provide new insights in the etiology of diseases related to EMT and cilia dysfunction.
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Affiliation(s)
- Camille E Tessier
- Nantes Université, Inserm, CNRS, Université d'Angers, CRCI2NA, Nantes, France
| | - Aurore M M Dupuy
- Nantes Université, Inserm, CNRS, Université d'Angers, CRCI2NA, Nantes, France
| | - Thomas Pelé
- Nantes Université, Inserm, CNRS, Université d'Angers, CRCI2NA, Nantes, France
| | - Philippe P Juin
- Nantes Université, Inserm, CNRS, Université d'Angers, CRCI2NA, Nantes, France
- ICO René Gauducheau, Saint Herblain, France
| | - Jacqueline A Lees
- Koch Institute for Integrative Cancer Research @ MIT, Cambridge, Massachusetts, USA
| | - Vincent J Guen
- Nantes Université, Inserm, CNRS, Université d'Angers, CRCI2NA, Nantes, France
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2
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Wilson MM, Callens C, Le Gallo M, Mironov S, Ding Q, Salamagnon A, Chavarria TE, Viel R, Peasah AD, Bhutkar A, Martin S, Godey F, Tas P, Kang HS, Juin PP, Jetten AM, Visvader JE, Weinberg RA, Attanasio M, Prigent C, Lees JA, Guen VJ. An EMT-primary cilium-GLIS2 signaling axis regulates mammogenesis and claudin-low breast tumorigenesis. Sci Adv 2021; 7:eabf6063. [PMID: 34705506 PMCID: PMC8550236 DOI: 10.1126/sciadv.abf6063] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 09/08/2021] [Indexed: 05/14/2023]
Abstract
The epithelial-mesenchymal transition (EMT) and primary ciliogenesis induce stem cell properties in basal mammary stem cells (MaSCs) to promote mammogenesis, but the underlying mechanisms remain incompletely understood. Here, we show that EMT transcription factors promote ciliogenesis upon entry into intermediate EMT states by activating ciliogenesis inducers, including FGFR1. The resulting primary cilia promote ubiquitination and inactivation of a transcriptional repressor, GLIS2, which localizes to the ciliary base. We show that GLIS2 inactivation promotes MaSC stemness, and GLIS2 is required for normal mammary gland development. Moreover, GLIS2 inactivation is required to induce the proliferative and tumorigenic capacities of the mammary tumor–initiating cells (MaTICs) of claudin-low breast cancers. Claudin-low breast tumors can be segregated from other breast tumor subtypes based on a GLIS2-dependent gene expression signature. Collectively, our findings establish molecular mechanisms by which EMT programs induce ciliogenesis to control MaSC and MaTIC stemness, mammary gland development, and claudin-low breast cancer formation.
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Affiliation(s)
- Molly M. Wilson
- Koch Institute for Integrative Cancer Research at MIT, Cambridge, MA, USA
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Céline Callens
- Institut de Génétique et Développement de Rennes, Centre National de la Recherche Scientifique, Rennes, France
| | - Matthieu Le Gallo
- INSERM U1242, Rennes 1 University, Rennes, France
- Centre de Lutte Contre le Cancer Eugène Marquis, Rennes, France
| | - Svetlana Mironov
- Institut de Génétique et Développement de Rennes, Centre National de la Recherche Scientifique, Rennes, France
| | - Qiong Ding
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Amandine Salamagnon
- Institut de Génétique et Développement de Rennes, Centre National de la Recherche Scientifique, Rennes, France
| | - Tony E. Chavarria
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Roselyne Viel
- Plateforme d’Histopathologie de Haute Précision (H2P2), Rennes, France
| | - Abena D. Peasah
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Arjun Bhutkar
- Koch Institute for Integrative Cancer Research at MIT, Cambridge, MA, USA
| | - Sophie Martin
- INSERM U1242, Rennes 1 University, Rennes, France
- Centre de Lutte Contre le Cancer Eugène Marquis, Rennes, France
| | - Florence Godey
- INSERM U1242, Rennes 1 University, Rennes, France
- Centre de Lutte Contre le Cancer Eugène Marquis, Rennes, France
| | - Patrick Tas
- INSERM U1242, Rennes 1 University, Rennes, France
- Centre de Lutte Contre le Cancer Eugène Marquis, Rennes, France
| | - Hong Soon Kang
- Cell Biology Section, Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, USA
| | | | - Anton M. Jetten
- Cell Biology Section, Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, USA
| | - Jane E. Visvader
- Stem Cells and Cancer Division, The Walter and Eliza Hall Institute of Medical Research and Department of Medical Biology, The University of Melbourne, Parkville, Victoria, Australia
| | - Robert A. Weinberg
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, USA
- MIT Department of Biology and the Whitehead Institute, Cambridge, MA, USA
| | - Massimo Attanasio
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Claude Prigent
- Institut de Génétique et Développement de Rennes, Centre National de la Recherche Scientifique, Rennes, France
- CRBM, CNRS, Université de Montpellier, Montpellier, France
| | - Jacqueline A. Lees
- Koch Institute for Integrative Cancer Research at MIT, Cambridge, MA, USA
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Vincent J. Guen
- Institut de Génétique et Développement de Rennes, Centre National de la Recherche Scientifique, Rennes, France
- CRCINA, INSERM, Université de Nantes, Nantes, France
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Hazan R, Mori M, Danielian PS, Guen VJ, Rubin SM, Cardoso WV, Lees JA. E2F4's cytoplasmic role in multiciliogenesis is mediated via an N-terminal domain that binds two components of the centriole replication machinery, Deup1 and SAS6. Mol Biol Cell 2021; 32:ar1. [PMID: 34260288 PMCID: PMC8684742 DOI: 10.1091/mbc.e21-01-0039] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Multiciliated cells play critical roles in the airway, reproductive organs, and brain. Generation of multiple cilia requires both activation of a specialized transcriptional program and subsequent massive amplification of centrioles within the cytoplasm. The E2F4 transcription factor is required for both roles and consequently for multiciliogenesis. Here we establish that E2F4 associates with two distinct components of the centriole replication machinery, Deup1 and SAS6, targeting nonhomologous domains in these proteins. We map Deup1 and SAS6 binding to E2F4’s N-terminus and show that this domain is sufficient to mediate E2F4’s cytoplasmic role in multiciliogenesis. This sequence is highly conserved across the E2F family, but the ability to bind Deup1 and SAS6 is specific to E2F4 and E2F5, consistent with their shared roles in multiciliogenesis. By generating E2F4/E2F1 chimeras, we identify a six-residue motif that is critical for Deup1 and SAS6 binding. We propose that the ability of E2F4 and E2F5 to recruit Deup1 and/or SAS6, and enable centriole replication, contributes to their cytoplasmic roles in multiciliogenesis.
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Affiliation(s)
- Renin Hazan
- David H. Koch Institute for Integrative Cancer Research and Department of Biology, Massachusetts Institute of Technology, Cambridge 02139, MA, USA
| | - Munemasa Mori
- Columbia Center for Human Development and Division of Pulmonary, Allergy and Critical Care, Department of Medicine, Columbia University Irving Medical Center, New York City, NY 10032, USA
| | - Paul S Danielian
- David H. Koch Institute for Integrative Cancer Research and Department of Biology, Massachusetts Institute of Technology, Cambridge 02139, MA, USA
| | - Vincent J Guen
- David H. Koch Institute for Integrative Cancer Research and Department of Biology, Massachusetts Institute of Technology, Cambridge 02139, MA, USA
| | - Seth M Rubin
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA, 95064, USA
| | - Wellington V Cardoso
- Columbia Center for Human Development and Division of Pulmonary, Allergy and Critical Care, Department of Medicine, Columbia University Irving Medical Center, New York City, NY 10032, USA.,Department of Genetics and Development and Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York City, NY 10032, USA
| | - Jacqueline A Lees
- David H. Koch Institute for Integrative Cancer Research and Department of Biology, Massachusetts Institute of Technology, Cambridge 02139, MA, USA
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Duclos M, Prigent C, Le Borgne R, Guen VJ. Three-Dimensional Imaging of Organoids to Study Primary Ciliogenesis During ex vivo Organogenesis. J Vis Exp 2021. [PMID: 34057457 DOI: 10.3791/62365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Organoids are stem cell-derived three-dimensional structures that reproduce ex vivo the complex architecture and physiology of organs. Thus, organoids represent useful models to study the mechanisms that control stem cell self-renewal and differentiation in mammals, including primary ciliogenesis and ciliary signaling. Primary ciliogenesis is the dynamic process of assembling the primary cilium, a key cell signaling center that controls stem cell self-renewal and/or differentiation in various tissues. Here we present a comprehensive protocol for the immunofluorescence staining of cell lineage and primary cilia markers, in whole-mount mouse mammary organoids, for light sheet microscopy. We describe the microscopy imaging method and an image processing technique for the quantitative analysis of primary cilium assembly and length in organoids. This protocol enables a precise analysis of primary cilia in complex three-dimensional structures at the single cell level. This method is applicable for immunofluorescence staining and imaging of primary cilia and ciliary signaling in mammary organoids derived from normal and genetically modified stem cells, from healthy and pathological tissues, to study the biology of the primary cilium in health and disease.
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Affiliation(s)
- Maela Duclos
- Univ Rennes, CNRS, IGDR (Institut de Génétique et Développement de Rennes)
| | - Claude Prigent
- Univ Rennes, CNRS, IGDR (Institut de Génétique et Développement de Rennes); CRBM, CNRS, University Montpellier
| | - Roland Le Borgne
- Univ Rennes, CNRS, IGDR (Institut de Génétique et Développement de Rennes)
| | - Vincent J Guen
- Univ Rennes, CNRS, IGDR (Institut de Génétique et Développement de Rennes); CRCINA, INSERM, CNRS, Université d'Angers, Université de Nantes;
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5
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Guen VJ, Prigent C. Targeting Primary Ciliogenesis with Small-Molecule Inhibitors. Cell Chem Biol 2020; 27:1224-1228. [PMID: 32795416 DOI: 10.1016/j.chembiol.2020.07.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 04/23/2020] [Revised: 06/12/2020] [Accepted: 07/22/2020] [Indexed: 11/18/2022]
Abstract
The primary cilium is generally a non-motile solitary organelle that protrudes from a basal body at the cell surface in various cell types in multicellular organisms. This microtubule-based structure acts as a cell signaling platform to control key cellular processes, including cell proliferation and differentiation in development and in adult tissues. Elongated and/or dysfunctional primary cilia cause developmental disorders termed ciliopathies and cancers. The genetic inhibition of ciliogenesis inducers can block the progression of these diseases in model organisms. Thus, pharmacological inhibition of primary ciliogenesis has emerged as a potential strategy to treat these pathological conditions. Pharmacological inhibitors that affect cilium assembly, and have an impact on other cellular processes, have been identified. Here, we review some of these tools and discuss their value and limitations in the study of primary cilium biology, as well as for the treatment of some ciliopathies and cancers.
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Affiliation(s)
- Vincent J Guen
- Univ Rennes, CNRS, IGDR (Institut de génétique et développement de Rennes)- UMR 6290, 35000 Rennes, France.
| | - Claude Prigent
- Univ Rennes, CNRS, IGDR (Institut de génétique et développement de Rennes)- UMR 6290, 35000 Rennes, France
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6
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Wilson MM, Weinberg RA, Lees JA, Guen VJ. Emerging Mechanisms by which EMT Programs Control Stemness. Trends Cancer 2020; 6:775-780. [PMID: 32312682 DOI: 10.1016/j.trecan.2020.03.011] [Citation(s) in RCA: 112] [Impact Index Per Article: 28.0] [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: 02/12/2020] [Revised: 03/19/2020] [Accepted: 03/23/2020] [Indexed: 01/06/2023]
Abstract
Tissue regeneration relies on adult stem cells (SCs) that possess the ability to self-renew and produce differentiating progeny. In an analogous manner, the development of certain cancers depends on a subset of tumor cells, called cancer stem cells (CSCs), with SC-like properties. In addition to being responsible for tumorigenesis, CSCs exhibit elevated resistance to therapy and thus drive tumor relapse post-treatment. The epithelial-mesenchymal transition (EMT) programs promote SC and CSC stemness in many epithelial tissues. Here, we provide an overview of the mechanisms underlying the relationship between stemness and EMT programs, which may represent therapeutic vulnerabilities for the treatment of cancers.
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Affiliation(s)
- Molly M Wilson
- Koch Institute for Integrative Cancer Research and Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Robert A Weinberg
- Koch Institute for Integrative Cancer Research and Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, USA; Whitehead Institute, Cambridge, MA, USA
| | - Jacqueline A Lees
- Koch Institute for Integrative Cancer Research and Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Vincent J Guen
- Univ Rennes, CNRS, IGDR (Institut de génétique et développement de Rennes)- UMR 6290, F- 35000 Rennes, France.
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7
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Abstract
Cyclin-dependent kinases (CDKs) play important roles in the control of fundamental cellular processes. Some of the most characterized CDKs are considered to be pertinent therapeutic targets for cancers and other diseases, and first clinical successes have recently been obtained with CDK inhibitors. Although discovered in the pre-genomic era, CDK10 attracted little attention until it was identified as a major determinant of resistance to endocrine therapy for breast cancer. In some studies, CDK10 has been shown to promote cell proliferation whereas other studies have revealed a tumor suppressor function. The recent discovery of Cyclin M as a CDK10 activating partner has allowed the unveiling of a protein kinase activity against the ETS2 oncoprotein, whose degradation is activated by CDK10/Cyclin M-mediated phosphorylation. CDK10/Cyclin M has also been shown to repress ciliogenesis and to maintain actin network architecture, through the phoshorylation of the PKN2 protein kinase and the control of RhoA stability. These findings shed light on the molecular mechanisms underlying STAR syndrome, a severe human developmental genetic disorder caused by mutations in the Cyclin M coding gene. They also pave the way to a better understanding of the role of CDK10/Cyclin M in cancer.
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Affiliation(s)
- Vincent J Guen
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, United States of America
| | - Carly Gamble
- P2I2 Group, Protein Phosphorylation and Human Disease Laboratory, Station Biologique de Roscoff, Centre National de la Recherche Scientifique, Université Pierre et Marie Curie, Roscoff, France
| | - Jacqueline A Lees
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, United States of America
| | - Pierre Colas
- P2I2 Group, Protein Phosphorylation and Human Disease Laboratory, Station Biologique de Roscoff, Centre National de la Recherche Scientifique, Université Pierre et Marie Curie, Roscoff, France
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Guen VJ, Edvardson S, Fraenkel ND, Fattal-Valevski A, Jalas C, Anteby I, Shaag A, Dor T, Gillis D, Kerem E, Lees JA, Colas P, Elpeleg O. A homozygous deleterious CDK10 mutation in a patient with agenesis of corpus callosum, retinopathy, and deafness. Am J Med Genet A 2017; 176:92-98. [PMID: 29130579 DOI: 10.1002/ajmg.a.38506] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [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: 06/19/2017] [Revised: 08/11/2017] [Accepted: 09/26/2017] [Indexed: 02/06/2023]
Abstract
The primary cilium is a key organelle in numerous physiological and developmental processes. Genetic defects in the formation of this non-motile structure, in its maintenance and function, underlie a wide array of ciliopathies in human, including craniofacial, brain and heart malformations, and retinal and hearing defects. We used exome sequencing to study the molecular basis of disease in an 11-year-old female patient who suffered from growth retardation, global developmental delay with absent speech acquisition, agenesis of corpus callosum and paucity of white matter, sensorineural deafness, retinitis pigmentosa, vertebral anomalies, patent ductus arteriosus, and facial dysmorphism reminiscent of STAR syndrome, a suspected ciliopathy. A homozygous variant, c.870_871del, was identified in the CDK10 gene, predicted to cause a frameshift, p.Trp291Alafs*18, in the cyclin-dependent kinase 10 protein. CDK10 mRNAs were detected in patient cells and do not seem to undergo non-sense mediated decay. CDK10 is the binding partner of Cyclin M (CycM) and CDK10/CycM protein kinase regulates ciliogenesis and primary cilium elongation. Notably, CycM gene is mutated in patients with STAR syndrome. Following incubation, the patient cells appeared less elongated and more densely populated than the control cells suggesting that the CDK10 mutation affects the cytoskeleton. Upon starvation and staining with acetylated-tubulin, γ-tubulin, and Arl13b, the patient cells exhibited fewer and shorter cilia than control cells. These findings underscore the importance of CDK10 for the regulation of ciliogenesis. CDK10 defect is likely associated with a new form of ciliopathy phenotype; additional patients may further validate this association.
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Affiliation(s)
- Vincent J Guen
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Simon Edvardson
- Monique and Jacques Roboh Department of Genetic Research, Hadassah Medical Center, Hebrew University of Jerusalem, Jerusalem, Israel.,Pediatric Neurology Unit, Hadassah Medical Center, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Nitay D Fraenkel
- Department of Respiratory Rehabilitation, Alyn Hospital, Jerusalem, Israel
| | - Aviva Fattal-Valevski
- Pediatric Neurology Unit, Dana-Dwek Children's Hospital, Tel Aviv Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Chaim Jalas
- Bonei Olam, Center for Rare Jewish Genetic Disorders, Brooklyn, New York
| | - Irene Anteby
- Department of Ophthalmology, Hadassah Medical Center, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Avraham Shaag
- Monique and Jacques Roboh Department of Genetic Research, Hadassah Medical Center, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Talia Dor
- Pediatric Neurology Unit, Hadassah Medical Center, Hebrew University of Jerusalem, Jerusalem, Israel
| | - David Gillis
- Department of Pediatrics, Hadassah Medical Center, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Eitan Kerem
- Department of Pediatrics, Hadassah Medical Center, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Jacqueline A Lees
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Pierre Colas
- P2I2 Group, Protein Phosphorylation and Human Disease Laboratory, Station Biologique de Roscoff, Centre National de la Recherche Scientifique and Université Pierre et Marie Curie, Roscoff, France
| | - Orly Elpeleg
- Monique and Jacques Roboh Department of Genetic Research, Hadassah Medical Center, Hebrew University of Jerusalem, Jerusalem, Israel
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Guen VJ, Gamble C, Perez DE, Bourassa S, Zappel H, Gärtner J, Lees JA, Colas P. STAR syndrome-associated CDK10/Cyclin M regulates actin network architecture and ciliogenesis. Cell Cycle 2016; 15:678-88. [PMID: 27104747 DOI: 10.1080/15384101.2016.1147632] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [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: 01/30/2023] Open
Abstract
CDK10/CycM is a protein kinase deficient in STAR (toe Syndactyly, Telecanthus and Anogenital and Renal malformations) syndrome, which results from mutations in the X-linked FAM58A gene encoding Cyclin M. The biological functions of CDK10/CycM and etiology of STAR syndrome are poorly understood. Here, we report that deficiency of CDK10/Cyclin M promotes assembly and elongation of primary cilia. We establish that this reflects a key role for CDK10/Cyclin M in regulation of actin network organization, which is known to govern ciliogenesis. In an unbiased screen, we identified the RhoA-associated kinase PKN2 as a CDK10/CycM phosphorylation substrate. We establish that PKN2 is a bone fide regulator of ciliogenesis, acting in a similar manner to CDK10/CycM. We discovered that CDK10/Cyclin M binds and phosphorylates PKN2 on threonines 121 and 124, within PKN2's core RhoA-binding domain. Furthermore, we demonstrate that deficiencies in CDK10/CycM or PKN2, or expression of a non-phosphorylatable version of PKN2, destabilize both the RhoA protein and the actin network architecture. Importantly, we established that ectopic expression of RhoA is sufficient to override the induction of ciliogenesis resulting from CDK10/CycM knockdown, indicating that RhoA regulation is critical for CDK10/CycM's negative effect on ciliogenesis. Finally, we show that kidney sections from a STAR patient display dilated renal tubules and abnormal, elongated cilia. Altogether, these results reveal CDK10/CycM as a key regulator of actin dynamics and a suppressor of ciliogenesis through phosphorylation of PKN2 and promotion of RhoA signaling. Moreover, they suggest that STAR syndrome is a ciliopathy.
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Affiliation(s)
- Vincent J Guen
- a P2I2 group, Protein Phosphorylation and Human Disease Laboratory, Station Biologique de Roscoff, Centre National de la Recherche Scientifique (CNRS) and Université Pierre et Marie Curie (UPMC) , Roscoff , France.,b David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology (MIT) , Cambridge , MA , USA
| | - Carly Gamble
- a P2I2 group, Protein Phosphorylation and Human Disease Laboratory, Station Biologique de Roscoff, Centre National de la Recherche Scientifique (CNRS) and Université Pierre et Marie Curie (UPMC) , Roscoff , France
| | - Dahlia E Perez
- b David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology (MIT) , Cambridge , MA , USA
| | - Sylvie Bourassa
- c Proteomics Platform, Centre Hospitalier Universitaire de Québec (CHUQ) , Québec , Canada
| | - Hildegard Zappel
- d Universitätsmedizin Göttingen, Department of Child and Adolescent Health, Division of Neuropediatrics , Göttingen , Germany
| | - Jutta Gärtner
- d Universitätsmedizin Göttingen, Department of Child and Adolescent Health, Division of Neuropediatrics , Göttingen , Germany
| | - Jacqueline A Lees
- b David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology (MIT) , Cambridge , MA , USA
| | - Pierre Colas
- a P2I2 group, Protein Phosphorylation and Human Disease Laboratory, Station Biologique de Roscoff, Centre National de la Recherche Scientifique (CNRS) and Université Pierre et Marie Curie (UPMC) , Roscoff , France
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